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SPRAY ENGINEERING HANDBOOK CTG SH 07 EU
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Page 1: SPRAY CTG SH 07 EU ENGINEERING HANDBOOK

SPRAY ENGINEERING

HANDBOOK

CTG SH 07 EU

TECHNICAL PUBLICATIONSPNR manufactures a complete range of spray nozzles for industrial applications and many other products and systems designed according to the latest cutting-edge technologies All our products are described in the following catalogues

PRODUCT RANGE CTG TV GENERAL PURPOSE SPRAY NOZZLES CTG UGAIR ASSISTED ATOMIZERS CTG AZCOMPLEMENTARY PRODUCTS AND ASSEMBLY FITTINGS CTG ACINDUSTRIAL TANK WASHING SYSTEMS CTG LSPAPER MILL PRODUCTS CTG PMEVAPORATIVE COOLING LANCES CTG LNSTEELWORK NOZZLES CTG SWSPRAYDRY NOZZLES CTG SDFIREFIGHTING PRODUCTS AND SISTEMS CTG FF

Our technical literature is continuously revised and updated and sent to our Customers who are listed in our Catalogues Delivery List If you are interested in receiving the latest version of our catalogues please contact the nearest PNR officeWAIVER OF RESPONSABILITYThe information contained herein is provided ldquoas isrdquo and PNR does not guarantee the correctness and accuracy of the sameThis publication may contain technical inaccuracies or typographical errors It may also be subject to periodic changes without prior notice

INDEXGENERAL INFORMATION

International system of units 4Prefix tables for SI units 5Conversion table American units to SI units 5Conversion tables temperature scales 6Metric and decimal equivalents of fractions of an inch 7

LIQUID SPRAY AND SPRAY NOZZLESLiquid spray 9Spray nozzle types 11Spray nozzle coding 13Computerized fluid dynamics 14Spray generation 15Droplet spectrum 16Nozzle flow rate 19Spray angle 21Spray distribution 23Influence of liquid viscosity 27Influence of liquid specific gravity 29Jet impact 30Pressure drop through a nozzle 32

NOZZLE MATERIALSPnr material codes 34Properties of materials 35Mechanical properties of materials 39Chemical resistance of materials 40

PIPINGPipes data 74Economic pipe sizes 75Pressure drop in clean steel pipes 76Flange dimensions 78Sieve size conversion chart 80

PNR PRODUCT RANGE

INDE

X

wwwpnr-nozzlescom CTG SH 07 EU

3wwwpnr-nozzlescomCTG SH 07 EU 3

Foreword

Along many years PNR engineers have been involved with Customers to find out the appropriate solution to specific application problems in numberless different industriesThis continuous cooperation has allowed us to gather a large quantity of information regarding practical spray nozzles applications which we make available every day to our CustomersWe like to thank alI our Customers for their past cooperation and for the invaluable help they have given us in designing and manufacturing an always more complete and efficient range of spray nozzles and spraying systemsTo make this information readily available and improve our service we have now decided to gather and organize it within a manualWe hope the reader will appreciate our work and welcome any suggestion or addition which may lead to improve and complete this manual

GENERAL INFORMATIONInternational system of units 4Prefix tables for SI units 5Conversion table American units to SI units 5Conversion tables temperature scales 6Metric and decimal equivalents of fractions of an inch 7

GENERAL INFORMATION

INTR

ODUC

TION

GENE

RAL

INFO

RMAT

ION

3

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Description

The INTERNATIONAL SYSTEM OF UNITS sometimes called SI has been defined by the International Standards Organization (ISO) and is based upon metric units The following notes include most units which are likely to be used in handing of fluids The system consists of nine base units and supplementary units which are coherently derived from them The coherence con-sists in the fact that the product or the quotient of any two unit quantities in the system result in another unit quantity Because of the world wide trend to use this modern metric system we are providing in the following the conversion constants for the most useful units

Base Units and derived units

The SI has defined the following base unit

GENE

RAL

INFO

RMAT

ION

Ndeg QUANTITY UNIT NAME UNIT SYMBOL

1 Length meter m

2 Mass kilogram kg

3 Time second s

4 Thermodynamic temperature Kelvin K

5 Molecular substance mole mol

6 Electric current Ampere A

7 Light intensity candela cd

8 Plane angle radiante rad

9 Solid angle steradian sr

Out of these base units many other have been derived the most interesting for our purposes being listed below

Ndeg QUANTITY UNIT NAME UNIT SYMBOL EQUIVALENCES

10 Area square meter m2

11 Volume cubic meter m3

12 Density kilogram per cubic meter Kgm3

13 Velocity meter per second ms

14 Acceleration meter per second squared ms2

15 Angular velocity radian per second rad s

16 Frequency Hertz Hz Hz = cicli s

17 Force Newton N N = kg ms2

18 Pressure Pascal Pa Pa = Nm2

19 Momentum kilogram meter per second Kg ms

20 Energy Joule J J = N m

21 Power Watt W W = Js

22 Moment of force Newton meter N m

23 Kinematic viscosity square meter per second m2s

24 Dynamic Viscosity Pascal second Pa s

25 Thermal conductivity Watt per meter Kelvin W (m K)

GENERAL INFORMATION International system of units

5wwwpnr-nozzlescomCTG SH 07 EU

GENE

RAL

INFO

RMAT

ION

AMERICAN UNIT CONVERSION FACTOR SI UNITPound masscubic feet 16018 kilogramscubic meterGallons per minute 3785 liters per minute (lpm)US Gallon 3785 liter (I)Pound force 4448 Newton (N)BTU (British Thermal Unit) 1055 Joule (J)BTU per hour 02931 Watt (W)BTU per pounddeg F 4184 Joule (kg K)mil 254 Micrometer (micron)Inches 254 millimeters (mm)Foot 03048 meter (m)Horsepower 0746 kilowatt (kW)Pounds per square inch 00689 bar (1 bar = 100 kPa)BTU per pound 2326 Joule per kgLbs per gallon 01198 kg per liter (kgl)Square inch 64516 square centimeter (cm2)Square foot 00929 square meter (m2)Acre 04047 hectares (ha)Foot per second 03048 meters per second (msec)Foot per minute 03048 meters per minute (mmin)Miles per hours 1609 kilometers per hour (kmh)Knots 1852 kilometers per hour (kmh)Cubic foot 00283 cubic meter (m3)Cubic inch 16387 cubic centimeter (cm3)Pound 04536 kilogram (kg)Ton 090272 metric ton (t)

QUANTITYDENSITYFLOW RATEFLUID VOLUMEFORCEHEATHEAT TRANSFERSPECIFIC HEAT CAPACITYLENGTHLENGTHLENGTHPOWERPRESSURECALORIC VALUE ENTALPYSPECIFIC WEIGHTSURFACESURFACESURFACEVELOCITYVELOCITYVELOCITYVELOCITYVOLUMEVOLUMEWEIGHTWEIGHT

Multiply American Units on the left (by the conversion factor) to obtain SI Units on the right Divide SI Units on the right (by the conversion factor) to obtain American Units on the left

GENERAL INFORMATION Prefix tables for SI units

Prefixes

SI units can be indicated together with a prefix to easily indicate very large or very small numbersAs an example visible light has a wave length of approximately 00000005 m (meters) which can be more easily written as 500 nm (nanometers)Please note it is not allowed to use prefixes together you cannot write 10000 m = 1da-km

10n Prefix Symbol Denomination Decimal equivalent1024 yotta Y 1 000 000 000 000 000 000 000 0001021 zetta Z 1 000 000 000 000 000 000 0001018 exa E 1 000 000 000 000 000 0001015 peta P 1 000 000 000 000 0001012 tera T 1 000 000 000 000109 giga G 1 000 000 000106 mega M Million 1 000 000103 kilo k Thousand 1 000102 etto h Hundred 10010 deca da Ten 1010minus1 deci d Tenth 0110minus2 centi c Hundredth 00110minus3 milli m Thousandth 000110minus6 micro micro Millionth 0000 00110minus9 nano n 0000 000 00110minus12 pico p 0000 000 000 00110minus15 femto f 0000 000 000 000 00110minus18 atto a 0000 000 000 000 000 00110minus21 zepto z 0000 000 000 000 000 000 00110minus24 yocto y 0000 000 000 000 000 000 000 001

GENERAL INFORMATION Conversion table American units to Si units

NoteBecause of discrepancies between some denominations in English and American we only mention the commonly used deno-minations

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There are 4 principal types of temperature scales used for indicate the temperature CENTIGRADE CELSIUS FAHRENHEIT KELVIN and RANKINE Kelvin and Celsius scales are used in Europe Rankine Fahrenheit are used in Anglo-Saxons countries

MP = water melting pointBP = water boiling point

GENE

RAL

INFO

RMAT

ION SYMBOL NAME MP BP NOTES

degC Centigrade 0 100 0 and 100 are arbitrarily placed at the freezing point andboiling point of water

degF Fahrenheit 32 212

0degF is the stabilized temperature when equal amounts ofice water and salt are mixed 96degF is the temperatureldquowhen the thermometer is held in the mouth or under thearmpit of a living man in good healthrdquo

degK Kelvin 27316 37316Based upon the definitions of the Centigrade scale and theexperimental evidence that absolute zero is ndash27316deg Cand that is an international standard temperature point

degR Rankine 49167 67167 Based upon the definitions of the Fahrenheit scale andthe experimental evidence that absolute zero is ndash27316deg C

degC degF43 1094

44 1112

45 113

46 1148

47 1166

48 1184

49 1202

50 122

51 1238

52 1256

53 1274

54 1292

55 131

56 1328

57 1346

58 1364

59 1382

60 140

61 1418

62 1436

63 1454

64 1472

65 149

66 1508

degC degF67 1526

68 1544

69 1562

70 158

71 1598

72 1616

73 1634

74 1652

75 167

76 1688

77 1706

78 1724

79 1742

80 176

81 1778

82 1796

83 1814

84 1832

85 185

86 1868

87 1886

88 1904

89 1922

90 194

degC degF91 1958

92 1976

93 1994

94 2012

95 203

96 2048

97 2066

98 2084

99 2102

100 212

105 221

110 230

115 239

120 248

125 257

130 266

135 275

140 284

145 293

150 302

160 320

170 338

180 356

190 374

degC degF19 662

20 68

21 698

22 716

23 734

24 752

25 77

26 788

27 806

28 824

29 842

30 86

31 878

32 896

33 914

34 932

35 95

36 968

37 986

38 1004

39 1022

40 104

41 1058

42 1076

degC degF-10 14

-8 176

-6 212

-4 248

-2 284

0 32

1 338

2 356

3 374

4 392

5 41

6 428

7 446

8 464

9 482

10 50

11 518

12 536

13 554

14 572

15 59

16 608

17 626

18 644

CONVERSION FORMULAE TABLE

CELSIUS FAHRENHEIT KELVIN RANKINE

degC= -

degF - 32 K - 27316

R - 27316

18 18

degF= 18 degC + 32 18K - 45969 R - 45969

K= degC + 27316

degF - 32 + 27316

- R

18 18

degR= 18 (degC + 27316) degF + 45967 18K -

GENERAL INFORMATION Conversion table temperature scales

7wwwpnr-nozzlescomCTG SH 07 EU

GENE

RAL

INFO

RMAT

ION

GENERAL INFORMATION Metric and decimal equivalents of fractions of an inch

5wwwpnr-nozzlescom

METRIC AND DECIMAL EQUIVALENTS OF FRACTIONS OF ONE INCH

mm FRACTIONS OF ONE INCH INCHES

03969 164 0015625079375 132 00312511906 364 00468715875 116 00625 19844 564 0078125238125 332 009375 27781 764 0109375 31750 18 012535719 964 014062396875 532 01562543656 1164 017187547625 316 1364 0187551594 0203125555625 732 02187559531 1564 023437563500 14 02567469 1764 0265625 714375 932 02812575406 1964 029687 79375 516 0312583344 2164 0328125873125 1132 03437591281 2364 035937595250 38 037599219 2564 0390625

1031875 1332 040625107156 2764 042187111125 716 04375115094 2964 04531251190625 1532 046875123031 3164 0484375127000 12 05130969 3364 05156251349375 1732 053125138906 3564 054687142875 916 05625146844 3764 05781251508125 1932 059375154781 3964 0609375 158750 58 0625 162719 4164 064062 1666875 2132 065625 170656 4364 0671875 174625 1116 06875 178594 4564 0703125 1825625 2332 071875 186531 4764 0734375 190500 34 075194469 4964 07656251984375 2532 078125202406 5164 0796875206375 1316 08125210344 5364 08281252143125 2732 084375218280 5564 085937222250 78 0875226219 5764 08906252301875 2932 090625 234156 5964 0921875238125 1516 09375242094 6164 09531252460625 3132 096875250031 6364 0984375254000 1 10

INT

RO

DU

CT

ION

5wwwpnr-nozzlescom

METRIC AND DECIMAL EQUIVALENTS OF FRACTIONS OF ONE INCH

mm FRACTIONS OF ONE INCH INCHES

03969 164 0015625079375 132 00312511906 364 00468715875 116 00625 19844 564 0078125238125 332 009375 27781 764 0109375 31750 18 012535719 964 014062396875 532 01562543656 1164 017187547625 316 1364 0187551594 0203125555625 732 02187559531 1564 023437563500 14 02567469 1764 0265625 714375 932 02812575406 1964 029687 79375 516 0312583344 2164 0328125873125 1132 03437591281 2364 035937595250 38 037599219 2564 0390625

1031875 1332 040625107156 2764 042187111125 716 04375115094 2964 04531251190625 1532 046875123031 3164 0484375127000 12 05130969 3364 05156251349375 1732 053125138906 3564 054687142875 916 05625146844 3764 05781251508125 1932 059375154781 3964 0609375 158750 58 0625 162719 4164 064062 1666875 2132 065625 170656 4364 0671875 174625 1116 06875 178594 4564 0703125 1825625 2332 071875 186531 4764 0734375 190500 34 075194469 4964 07656251984375 2532 078125202406 5164 0796875206375 1316 08125210344 5364 08281252143125 2732 084375218280 5564 085937222250 78 0875226219 5764 08906252301875 2932 090625 234156 5964 0921875238125 1516 09375242094 6164 09531252460625 3132 096875250031 6364 0984375254000 1 10

INT

RO

DU

CT

ION

5wwwpnr-nozzlescom

METRIC AND DECIMAL EQUIVALENTS OF FRACTIONS OF ONE INCH

mm FRACTIONS OF ONE INCH INCHES

03969 164 0015625079375 132 00312511906 364 00468715875 116 00625 19844 564 0078125238125 332 009375 27781 764 0109375 31750 18 012535719 964 014062396875 532 01562543656 1164 017187547625 316 1364 0187551594 0203125555625 732 02187559531 1564 023437563500 14 02567469 1764 0265625 714375 932 02812575406 1964 029687 79375 516 0312583344 2164 0328125873125 1132 03437591281 2364 035937595250 38 037599219 2564 0390625

1031875 1332 040625107156 2764 042187111125 716 04375115094 2964 04531251190625 1532 046875123031 3164 0484375127000 12 05130969 3364 05156251349375 1732 053125138906 3564 054687142875 916 05625146844 3764 05781251508125 1932 059375154781 3964 0609375 158750 58 0625 162719 4164 064062 1666875 2132 065625 170656 4364 0671875 174625 1116 06875 178594 4564 0703125 1825625 2332 071875 186531 4764 0734375 190500 34 075194469 4964 07656251984375 2532 078125202406 5164 0796875206375 1316 08125210344 5364 08281252143125 2732 084375218280 5564 085937222250 78 0875226219 5764 08906252301875 2932 090625 234156 5964 0921875238125 1516 09375242094 6164 09531252460625 3132 096875250031 6364 0984375254000 1 10

INT

RO

DU

CT

ION

mm FRACTIONS OF ONE INCH INCHES

8 wwwpnr-nozzlescom CTG SH 07 EU

LIQUID SPRAY AND SPRAY NOZZLESLiquid spray 9Spray nozzle types 11Spray nozzle coding 13Computerized fluid dynamics 14Spray generation 15Droplet spectrum 16Nozzle flow rate 19Spray angle 21Spray distribution 23Influence of liquid viscosity 27Influence of liquid specific gravity 29Jet impact 30Pressure drop through a nozzle 32

LIQUID SPRAY AND SPRAY NOZZLESLI

QUID

SPR

AYAN

D SP

RAY

NOZZ

LES

A nozzle is a device which converts the energy from a fluid into velocity of the spray dropletsApplications in many industrial processes are numberless with spray nozzles being very often a critical component in determining the final quality of the product or the efficiency of the processFor this reason the available nozzle range types for industrial applications can be found in PNR nozzle catalogue as well as a concise but complete information about the most important parameters which can give a technical definition of a spray and its qualityWe have grouped in the following the most useful formulas for designing a spray system showing the influence of the different factors which can affect the process of sprayingMore information about the working life of a nozzle and the best suited material for a given purpose can be found at page 17 of this publication AlI the following data when not otherwise specified refer to spraying water at 15deg C

9wwwpnr-nozzlescomCTG SH 07 EU

LIQUID SPRAY AND SPRAY NOZZLES Liquid spray

LIQU

ID S

PRAY

AND

SPRA

Y NO

ZZLE

S

LIQUID SPRAY AS A PROCESS

The process of spraying a liquid can be described as composed of two phases namely

1 Breaking up the liquid into separated drops2 Directing the liquid drops onto a surface or an object to achieve the desired result

The above two phases are normally performed by the types of nozzles being used in industrial processes at the same time by means of different techniques which shall be illustrated in the followingThe continuous progress in the manufacturing techniques in recent years has requested the nozzle manufacturer to make available to the industry an always more complete range of spray nozzle types to perform the different processes in a more efficient wayIt is the interest of the engineer using spray nozzles in manufacturing processes to become familiar with the different types of nozzles which are available today and with their individual characteristics in order to be able to choose the nozzle which performs with the highest possible efficiency on a given application

Spraying a liquid through a spray nozzle can serve different purposes among which the most important are the following

1 Cooling by means of heat transfer between the product itself and the liquid running on its surface2 Washing where the water directed onto the product takes away dirt or undesired substances from the product surface3 Humidifying with sprays carrying very little liquid quantities to the product surfaceinto a chamber or into a room4 Metering the desired liquid quantity in a unit of time into the product being handled5 Applying a product on a surface as in the case of spray painting or surface pre-treatment before painting6 Increasing the liquid surface to speed up heat transfer processes or chemical reactions and many others in numerous applications throughout modern industry

It is self evident that the best results for every application are only obtained when the right choices in terms of nozzle type flow value spray angle drop dimensions and nozzle material are madeThe purpose of the following pages is to give the reader the basic knowledge which is needed to properly select a spray nozzle for a given application

Spray nozzles

a spray nozzle is a device which makes use of the pressure energy of a liquid to increase its speed through an orifice and break it into dropsIts performances can be identified and described precisely so that the design engineer can specify exactly the spray nozzle required for a given process

The relevant characteristics which identify the performances of a nozzle are the following

1 The liquid flow delivered as a function of the nozzle feed pressure2 The opening angle of the produced spray3 The nozzle efficiency as the ratio between the energy of the spray and the energy used by the nozzle4 The evenness of the flow distribution over the target5 The droplet size distribution of the spray6 The jet impact of the spray

The above characteristics will be discussed in the following pages in connection with the different nozzle types

10 wwwpnr-nozzlescom CTG SH 07 EU

LIQU

ID S

PRAY

AND

SPRA

Y NO

ZZLE

S

TECHNIQUES FOR SPRAY PRODUCTION

Many different techniques can be used to produce a spray and most of them are used today for nozzles to be applied in industrial processes Based on the different techniques the following nozzle types can be used in industrial applications to generate a liquid spray

1 Pressure nozzlesThis is the simplest type of nozzles where an orifice is opened into a chamber where the liquid to be sprayed is fed under pressure A spray is produced through the orifice with spray pattern flow rate and spray angle depending upon the orifice edge profile and the design of the inside pressure chamberTypical pressure nozzles are the flat jet nozzles series GA J GX and GY

2 Turbulence nozzlesIn these nozzles the liquid moving towards the chamber preceding the orifice is given a rotational speed component so as to open up in a conical shape as soon as it leaves the orifice edge because of centrifugal force Based on the nozzle design and the technique used to generate the rotational speed the drops produced can be confined to the cone outer surface (hollow cone spray) or be evenly distributed to fill the entire volume of the cone (full cone spray)

3 Impact nozzlesHere the desired spray shape is obtained producing an impact of the liquid jet onto a properly designed surface The liquid jet is subsequently changed into a fluid lamina and then broken into drops with the desired spray pattern after leaving the nozzle edge

4 Air assisted atomizersFine and very fine sprays can be obtained by means of air assisted atomizers working upon various different principles More detailed information about air assisted atomizing can be found in our Catalogue Air assisted atomizers (ordering code CTG AZ18)

LIQUID SPRAY AND SPRAY NOZZLES Liquid spray

11wwwpnr-nozzlescomCTG SH 07 EU

LIQU

ID S

PRAY

AND

SPRA

Y NO

ZZLE

S

FULL CONE PATTERN

In a full cone spray the droplets are distributed into a volume which is limited by a cone having its origin point at the nozzle orifice Such spray pattern is commonly used in a large variety of industrial processes since it is the one which allows to distribute in an even way the water flow onto a surface the full cone spray pattern is therefore useful as a typical example to evenly spray cooling liquid on a still surface Another typical use is to distribute liquid droplets within a certain volume like for example evenly distributing water droplets in the inside volume of a cooling tower

Because of the wide number of processes performed by means of full cone nozzles the original shape has evolved into a range of specialised types where the full cone spray pattern or a pattern similar to a full cone one is obtained by different techniques

Standard full cone (turbulence nozzle)These nozzles use a specially shaped vane placed at the nozzle inlet to give a rotational speed to the fluid flowing through the nozzleBecause of the rotational speed of the fluid water exiting the nozzle orifice is subjected to centrifu-gal force and opens up in the shape of a full coneThe extent of the angle of the cone is a function of both exit speed (created from the inlet pressure) and the internal design of the nozzle It can vary in practice from 15deg to 120deg

These nozzles can be also produced as square full cone nozzles where the square shape of the pyramidal spray is obtained by a special design of the outlet orificeTwo important details have to be noted from the system designer when using these type of noz-zles

the spray angle is measured on the side of the square sectionbullthe square section of the spray rotates within the distance from the nozzle orifice to the bulltarget area

Spiral full cone (deflection nozzle)This is not properly a full cone but rather a continuous liquid curtain evolving with the shape of a spiral inside a conical volume The disadvantage of a scarcely even distribution is compensated by an exceptionally good resistance to plugging which makes this nozzle the best choice in those applications where safety or system reliability are the prime concern eg fire fighting systems

Multiple full cone (turbulence nozzle air atomizer)This spray pattern is used in two cases that is

1 When a wide spray angle is to be reached with nozzles which inherently can only produce a narrow one or in such cases where small size droplets and rather high capacities are required Therefore several nozzles are grouped in a cluster with different spray directions the resulting spray pattern occurs from the additional group of single nozzle sprays and the droplet size of the spray remains the same as one of single nozzle It must be noted that a smaller nozzle will normally make smaller drops as compared to a larger size nozzle of the same type operating under the same conditions

2 When it is necessary to obtain a wide angle jet using nozzles which inherently deliver a lim-ited angle spray In the case of a wide angle air atomizer for example the droplet distribution is obviously not homogeneous and the result is rather a number of small angle sprays with different directions but still the liquid is atomized towards all the parts of the volume to be treated

LIQUID SPRAY AND SPRAY NOZZLES Spray nozzle types

Standard full cone

Spiral full cone

Multiple full cone

12 wwwpnr-nozzlescom CTG SH 07 EU

FLAT JET SPRAY PATTERN

In a flat jet spray the liquid droplets are sprayed in the shape of a flat liquid layer with different thickness according to the principle used to generate the spray A flat jet spray nozzle serves the purpose of spraying onto a surface or an object moving in a transverse direction with respect to the one of the jet surface a typical example being the nozzles in a car washing tunnel The vast majority of flat spray nozzles used in the industry work according to one of the following principles

In line flat jet (pressure nozzle)This is the general purpose flat jet nozzle where the liquid enters the nozzle in line with the axis length and is fed to a pressure chamber from where it is ejected through the nozzle orifice Flow value and spray angle are determined respectively from the orifice cross section and the orifice edge profile

In line straight jet (pressure nozzle)These nozzles can be considered a special kind of flat jet nozzle with naught degree spray angle They are designed to produce a sharp stable stream with powerful impact on a given point and serve normally to perform cleaning processes or to cut soft materials

Spoon flat jet (deflection nozzle)In this type of nozzle the liquid is fed under pressure to a round outlet orifice and then deflected onto a smooth profiled surface so as to assume a flat jet shape This sophisticated design is of advantage since it offers a stronger jet impact using the same feed pressureHigher efficiency comes from the very little energy required to just change the direction of the liquid flow this being the only energy required to generate the flat jet

HOLLOW CONE SPRAY PATTERN

A hollow cone spray pattern consists of droplets concentrated onto the outer surface of a conical shape volume with no droplets contained in the inside of the conical jet shape These nozzles are normally used for smoke washing or gas cooling applications in several industrial processes

Hollow cone (turbulence nozzle)These nozzles use a tangential injection of liquid into a whirling chamber to generate centrifugal forces which break up the liquid vein as soon as it leaves the orifice Precisely designed orifice profiles making use of the Coanda effect provides the ability to obtain very large spray angles

Hollow cone (deflection nozzle)A hollow cone can also be obtained taking a liquid flow to change direction onto a properly designed surface in order to break the liquid into droplets and distributing them as a hollow cone spray patternThis kind of nozzle is mainly used for applications in dust control and fire fighting systems

LIQUID SPRAY AND SPRAY NOZZLES Spray nozzle typesLI

QUID

SPR

AYAN

D SP

RAY

NOZZ

LES

13wwwpnr-nozzlescomCTG SH 07 EU

PNR CODING SYSTEM

As any other industrial product spray nozzles need to be precisely identified by means of a code in order to avoid mistakesPNR coding system has been designed with the following requirements in mind

Codes must be easily processed by a computer in ascending orderbullCodes must describe completely the product without any need for additional descriptionbullCodes must show to the user the basic specifications of the nozzle in order to ease the search in the cataloguebull

We have therefore determined our coding system described as follows

LIQUID SPRAY AND SPRAY NOZZLES Spray nozzle coding

LIQU

ID S

PRAY

AND

SPRA

Y NO

ZZLE

S

AA U X YB312 305

Thread type or other connection

Special features

Nozzle material code (see below)

The three digits give the nozzle capacity in lpm at 3 bar according to rank value

Rank of flow value see table below

Nozzle spray angle see table below

Nozzle type as described in the catalogue pages shown in ascending order

Nozzle tables report on a blue background the nominal flow value measured at 30 barFlow values at different pressures have been calculated

These codes serve as an indication onlyBased on different types of nozzles their significance can occasionally be different

CAPACITY RANK

Rank Flow digits Actual flow (lmin)

0 0 490 049

1 1 490 490

2 2 490 490

3 3 490 490

4 4 490 4900

SOME SPRAY ANGLE CODES (DEGREES)

A = 0 L = 40 T = 80

B = 15 M = 45 U = 90

C = 20 N = 50 J = 110

D = 25 Q = 60 W = 120

F = 30 R = 65 Y = 130

H = 35 S = 75 Z = 180

A1 Carbon steel D6 Glassfibre reinforced PP L2 Incolloy 825

A2 High speed steel D7 High density polyethilene L8 Hastelloy C276

A8 Zinc coated steel D8 Polyvinylidenefluoride (PVDF) P6 Acr But Styrene (ABS)

A9 Nickel coated steel E0 EPDM P8 EPDM 40 Shore

B1 AISI 303 Stainless steel E1 Polytetrafluorethylene (PTFE) T1 Brass

B2 AISI 304 Stainless steel E2 PTFE (25 glassfibers) T2 Brass chrome plated

B21 AISI 304 L Stainless steel E31 Acetalic resin (POM) T3 Copper

B3 AISI 316 Stainless steel E7 Viton T5 Bronze

B31 AISI 316 L Stainless steel E8 Synthetic rubber (NBR) T8 Brass nickel plated

C2 AISI 416 Stainless steel hardened F5 Ceramic T81 Brass electroless nickel plated

D1 Polyvinylchloride (PVC) F31 Ruby insert 303 body V1 Aluminum

D2 Polypropylene (PP) G1 Cast iron V7 Aluminum electroless n plated

d3 Polyamide (PA) H1 Titanium

D5 Talcum filled Polypropylene L1 Monel 400

NOZZLE MATERIAL CODES

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LIQUID SPRAY AND SPRAY NOZZLES Computerized fluid dynamics

The customers demand for an always higher efficiency requires to use not only the best tooling but in addition control instruments and design methods always more sophisticated like for example new software for obtaining the velocity distribution of a fluid flowing through a conduit

These software programs require that the geometry of the inner con-duit to be geometrically defined and in addition the process conditions ( pressure temperature fluid capacity ) and the fluid properties ( specific weight viscosity ) to be Introduced

Based on the above data it is pos-sible to obtain a very precise dis-tribution for the velocity value in each single point of the conduit both under numeric form and flow diagramsThese Information make it possi-ble as an example to minimize the flow turbulence and consequently to Increase the nozzle efficiency through an increase in the fluid exit velocityThis is of basic Importance for some kind of nozzles for example those nozzles required to supply an high impact jet when performing descal-ing processes in a rolling millBy trial and error it is also possible to eliminate problems like jet Instability or cavitation

The overall process efficiency in the flow path before the nozzle can also be considered which often results into the design of geometry modifi-cation or the Introduction of special flow improving profiles along the conduit

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The diagram on the right shows the idealization of the process generating the droplets while the water jet exiting the nozzle is breaking up The theoretical model whose exactitude seems to be confirmed by scientific research considers that the liquid flowing through the nozzle and past the orifice edge evolves into a liquid lamina This lamina because of instability induced by aerodynamic forces breaks up first into elongated ligaments more or less cylindrical and later into droplets

Taking the above process as a guideline one can easily appreciate that the average droplet diameter is some what related to several factors like

1 The thickness of the lamina itself2 The evenness of the lamina 3 A steady flow and break up process

For what has been said above and limited to hydraulic nozzles the system designer looking for fine droplet sprays should consider that the following results can be expected

Impact nozzles best

Centrifugal hollow cone nozzles multiple full cone nozzles good

Turbulence nozzles fair

Centrifugal Vaneless full cones worst

The above choice is obviously based on the droplet generation process which changes from one nozzle type to another and allows to forecast which type is best fro the applicationAn additional consideration of interest is that the expected droplet size changes for the same type of nozzle with the nozzle size it is possible to generate smaller drops spraying the same water quantity at the same pressure using a greater number of smaller nozzles

In cases where energy requirements are not a problem or where a specified small droplet diameter is required the smal-lest droplets can be obtained by means of an air assisted atomizerHere the shear action of a high speed compressed air flow is used with several different techniques to obtain a value for SMD (Sauter Mean Diameter) of 50 microns and less

LIQUID SPRAY AND SPRAY NOZZLES Spray generation

Theoretical Mechanism of droplet generation

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SLIQUID SPRAY AND SPRAY NOZZLES Droplet spectrum

The atomization of a liquid by means of a compressible fluid like air steam or a gas is defined pneumatic two-phase or twin-fluid atomization Many industrial processes require the availability of finely atomized droplets and the techniques to produce atomized jets have been largely improved in the recent years In addition more sophisticated process techniques have incre-ased the demand for a precise definition about the characteristics of the spray and are now available to the design engineer Since many years PNR can supply upon request complete documentation containing test reports about the more interesting and additional information which are described below for all PNR products

Laser Interpherometer Test (By Pdpa)

PNR droplet size test reports are performed by means of a Laser Interpherometer (Phase Doppler Particle Analyzer) where two laser beams cross in a given point of the spray and define a test probe area Droplet flying through the probe area cause a light scatter which is picked up by the instrument receiver and processed through a computer in order to obtain relevant information about the spray characteristics

Report information

Report information is made of data printed on three pages where the first page contains the most interesting data which make possible to base process calculations upon precise data about spraying degrees process efficiency and jet behavior in operational ambiance These pages contain the Sauter Mean Diameter value whose knowledge is of special importance in heat exchange calculations about evaporative gas cooling processes since it gives the possibility of evaluating the exchange surface obtained by atomizing for a given liquid volume

The upper picture at page 18 referring to atomizing water by means compressed air shows two following histograms

bull Distribution curve of droplet diameter (micron)

bull Distribution curve of droplet velocities (mps)

and the below described values

bull Arithmetic Mean Diameter (D10)

bull Surface Mean Diameter (D20)

bull Volume Mean Diameter (D30)

bull Sauter Mean Diameter (D32)

ARITHMETIC MEAN DIAMETERThis is a diameter value which multiplied by the local num-ber of droplets in the sample equals the addition of alI droplets diameters

SURFACE MEAN DIAMETERThis is the diameter of such a droplet whose surface mul-tiplied by the total droplets number equals the sum of alI droplets surfaces

VOLUME MEAN DIAMETERThis is the diameter of such a droplet whose volume mul-tiplied by the total droplets number equals the sum of all droplets volumes

SAUTER MEAN DIAMETERThis is the diameter of such a droplet whose volumearea ratio equals the ratio between the sum of alI droplet volu-mes divided by the sum of alI droplet surfaces

D10 = Σ i ni di

Σ i ni

D20 = Σ i ni di

2

Σ i ni

D30 = Σ i ni di

3

Σ i ni

D32 = Σ i ni di

3

Σ i di

2

3

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AttemptsDroplet number crossing probe area during test time This includes both validated and not validated droplet

Correct Count Criteria A mathematic correction is applied to validate droplets which cross Probe Area in a peripheral belt or to droplets without a perfect spherical shape so that alI validated droplets parameters are homogeneous (This correction is necessary so that there is direct proportionally between laser beam phase and droplet number diameter)

Number Density It is the number of droplets passing through probe area within test time

Probe areaThis is the area where the two laser beams are crossing so determining the probe area AlI droplets intersecting probe area are checked droplets which respect given parameters for shape are taken as valid droplets and make up the sample whose size and velocity parameters are reported

ValidationsDroplets accepted based on given shape parameters to make up for test sample

Velocity MeanDroplets distribution speed histogram (ms)

Volume Flow RateIt is the volume measured in cubic centimeter per second of the validated droplets making up for the sample

Volume FluxIt is the flow rate per specific area measured in cubic centimeter per second and square centimeter of the validated droplets making up the sample

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LIQUID SPRAY AND SPRAY NOZZLES Droplet spectrum

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SLIQUID SPRAY AND SPRAY NOZZLES Droplet spectrum

PNR can supply upon request complete documentation con-taining test reports about the aforementioned parameters and additional information for all PNR atomizersThe diagrams beside show the distribution of droplet diameters and droplet velocities of a spray under test as available to our customers

In the photo beside a test being performed at our laboratoriesWe use a computer driven laser interpherometer to detect and record the spray parameters while fluid capacities and feed pressure values are monitored through high precision instru-ments

IMPORTANT NOTE

The droplet size values measured with a PDPA instrumentation are representative of a well specified volume inside the spray and taking measurements in a different volume they can be considerably differentA correct spray droplet size characterization requires then not only tests being performed in several volumes within the spray but also that those measure volumes are selected with regard to the process the droplets are expected to performAs an example the droplet characterization of a spray should define how many volumes have been tested and which are the coordinates of each single test volume in relation to the nozzle orifice

Most of the times pretending to describe the droplet spectrum of a spray nozzle at a given pressure with only one diagram is therefore not correct

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In order to calculate the discharge flow rate from a given nozzle the Bernoulli law shall be used which says that the energy of a liquid flow remains unchanged over alI the sections of the flow Friction and turbu-lence losses are neglected which is reasonable for our purposes if the cal-culation is performed over two sections not too far away from each other

The Bernoulli law can be written as follows

Therefore if we consider two sections of the same pipe section A and section B we can write that the flow energy remains constant in the form

If we finally consider that the two above sections are taken immediately before and immediately after the nozzle outlet orifice being

ZA = ZB PB = 0 (PA is a differential pressure referred at the atmosphere pressure)

VA cong 0 negligible as compared to VB (for orifice diameter much smaller than the duct diameter)

we shall come to the formula

When we define a new constant k to include the value of the nozzle orifice outlet area (A) then we come to the following equation which says that for a nozzle spraying into a room at ambient pressure the exiting flow is proportional to the feed line pressure

Considering now two different pressure values for the same nozzle since k is a constant quantity we can write that

and derive from the above an equation that makes it possible to calculate the nozzle flow value at any given pressure value once the flow value at another pressure value is known

The energy of a given liquid flow crossing a given pipe section is composed of three parts namely

P Pressure energy of liquid particle per volume unit

1 ρV2 Kinetic energy of liquid particle per volume unit2ρgz Potential Energy of liquid particle per volume unit

Where ρ = density of liquid g = gravitational acceleration

z = height respect to one plane of reference V = liquid velocity

PA = 1 ρVB 2 rArr

2

K = Q rArr

PK =

Q1 = Q2 rArr

P1 P2

Q = A V rArr

Q = A x C x P rArr

1 P + 1 ρV2 + ρgz = E

2

VB = 2 PA rArr ρ

Q1 = P1

Q2 P2

3 V = C P

4 Q = K P

2 PA + 1 ρVA 2 + ρgzA = PB + 1 ρVB

2 + ρgzB 2 2

EXIT VELOCITY DEPENDS UPON PRESSURE

NOZZLE CAPACITY DEPENDS UPON PRESSURE

NOZZLE CAPACITYAT A DIFFERENT PRESSURE

5 Q2 = Q1 P2

P1

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LIQUID SPRAY AND SPRAY NOZZLES Nozzle flow rate

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SLIQUID SPRAY AND SPRAY NOZZLES Nozzle flow rate

The Equation (5) has been obtained after having simplified the real problem neglecting several factors like for examplebullInmostofthepracticalapplicationcasestheflowisturbulentandnotlaminarbullFrictionlossestendtostronglyincreasewithliquidvelocitybullDependinguponthetypeofnozzleadifferentpercentageoftheavailableenergyisusedtobreakupthejetandgivethe

desired spray pattern and spray angle

For the above reason equation (5) gives reliable results if used in a limited pressure range around the pressure value where the flow rate is known with this pressure range depending upon the type of nozzleOur experience has shown that one can expect the error in the calculated value to be lower than +- 6 for pressure values ranging from 13 to 3 times the reference value

As an example a nozzle rated for 10 lpm at 3 bars would have according to equation (5) the following flow valuesa 1 bar 577 lpma 9 bar 173 lpmin real conditions it can be expected the flow rate values to beas high as 61 lpm a 1 baras low as 162 lpm a 9 barAbove considerations are to be used as a guideline only because of the many factors influencing real operations which have not been considered here for example liquid temperature viscosity and density

Possible percentage deviation from theoretical flow rate values

Also above mentioned percentage errors have to be understood for nozzles using part of the flow energy to produce wide angle spray patternsLower values can be expected for narrow angle nozzles impact nozzles and straight jet nozzles Laboratory tests and diagrams showing real flow rate values for each nozzles are used in practice when a precise result must be available

Nozzle discharge coefficient

With reference to equation (4) if we consider the pressure value to be equal to 1 (P = 1 bar) the flow rate of the nozzle becomes

K is a parameter widely used in the fire fighting industry

In some instances reference is made to the nozzle discharge coefficient or shortly to the nozzle coefficient to indicate the nozzle flow rate for a unitary pressure Of course for a given pressure value Pn the flow value will be

+ 6

+ 3

- 3

- 6

CAPACITY AT A GIVEN PRESSURE VALUEWHEN K KHOWN

NOZZLE CAPACITYFOR P=1 barQ = K P = K 1 = K

6 Qn = K Pn

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The spray angle is the opening angle which the nozzle jet of droplets forms at the moment when it leaves the nozzle orifice and it is one of the fundamental parameters for the choice of a given nozzleIn fact the amplitude of the spray angle determines in connection with the distance between the nozzle orifice and the target to be covered the spray coverage and the density of liquid sprayed with respect to the cover area See our Catalogue for description of the different nozzle spray patterns The table at the bottom of the page gives the theoretical spray width based on the nozzle spray angle and the distance from the nozzle orifice It is important to note that because of several factors like gravity forces and aerodynamic drag the spray angle value cannot be maintained but in in a limited distance normally up to 300 mm from the orifice For air assisted atomizers it is improper to use the term spray angle since no precise value can be measured Therefore the values given by Catalogues are to be intended as guidelines only

THEORETICAL SPRAY COVERAGE

at various distances from nozzle orifice

Spray 50 100 150 200 250 300 400 500 600 700 800 1000 Angle mm mm mm mm mm mm mm mm mm mm mm mm

15deg 13 26 40 53 66 79 105 132 158 184 211 263 25deg 22 44 67 89 111 133 177 222 266 310 355 443 30deg 27 54 80 107 134 161 214 268 322 375 429 536 35deg 32 63 95 126 158 189 252 315 378 441 505 631 40deg 36 73 109 146 182 218 291 364 437 510 582 728 45deg 41 83 124 166 207 249 331 414 497 580 663 828 50deg 47 93 140 187 233 280 373 466 560 653 746 933 60deg 58 116 173 231 289 346 462 577 693 808 924 1150 65deg 64 127 191 255 319 382 510 637 765 892 1020 1270 70deg 70 140 210 280 350 420 560 700 840 980 1120 1400 75deg 77 154 230 307 384 460 614 767 921 1070 1230 1530 80deg 84 168 252 336 420 504 671 839 1010 1180 1340 1680 90deg 100 200 300 400 500 600 800 1000 1200 1400 1600 2000 95deg 109 218 327 437 546 655 873 1090 1310 1530 1750 2180 100deg 119 238 358 477 596 715 953 1190 1430 1670 1910 2380 110deg 143 286 429 571 714 857 1140 1430 1710 2000 2290 2856 120deg 173 346 520 693 866 1040 1390 1730 2080 2430 2771 3464 130deg 215 429 643 858 1070 1290 1720 2150 2570 3002 3431 4289

WhereASCbull = Actual Spray CoverageTSCbull = Theoretical Spray CoverageASAbull = Actual Spray AngleTSAbull = Theoretical Spray AngleL bull = Spray Distances

TSC = 2 middot L middot ctan ( TSA )2

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LIQUID SPRAY AND SPRAY NOZZLES Spray angle

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SLIQUID SPRAY AND SPRAY NOZZLES Spray angle

Depending upon the nozzle design variations of feed pressure may have a great influence on the spray angle valueGenerally with increasing pressure turbulence full cone nozzles will produce narrower angles flat jet nozzles will show a wider angle spray while nozzles working on the deflection principle like spiral nozzles and K style flat jet nozzles will be less affected by pressure changesAll nozzles will not function properly with very low pressure values (from 05 bar down depending upon nozzle type ) with a marked decay in performance larger drops not well defined spray pattern lower spray angle values

The above pictures show spray angles for different nozzles and different pressure valuesShould your application strictly require that a given value of the spray angle is obtained under a given pressure value or pressure range of values please obtain a test report from our laboratories

Full cone nozze DDW 2235

Flat jet nozzleJCW 2245

Spiral nozzeECW 2230

Pressure 05 bar Pressure 05 bar Pressure 05 bar

Pressure 3 bar Pressure 3 bar Pressure 3 bar

Pressure 10 bar Pressure 10 bar Pressure 10 bar

Photo obtained with 120000s flashlight

picture 1

picture 4

picture 7

picture 2

picture 5

picture 8

picture 3

picture 6

picture 9

NotePicture 2 shows clearly the droplet generation mechanism as described at page 15

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Terms and definitions

A very important characteristic of a spray nozzle is a parameter called Spray Distribution which gives a precise information about how evenly the drops of the spray are distributed onto the area covered by the sprayIt is self understood that normally it is preferable to obtain the most even distribution possibleIn the past this was done through the visual examination of a diagram reporting the quantity of water contained for example in glass pipes aligned onto the spray coverage areaPnr has determined to obtain such a result in a scientific way through high technology instrumentation as shown in the pictures below showing one of our patternators and a typical distribution diagram

Now to the spray geometry and some definition letrsquos consider a nozzle with a capa-city Q at the pressure PAt every value for distance H which we call height of spray we can define a plane lsquonrsquo normal to the nozzle axis on which a line can define the intersection of the spray onto the planeThe area covered by the spray on the plane lsquonrsquo has a surface S depending from the following parametersa) Spray pattern Fb) Opening angle of the spray αc) Height of the spray H

We can then write S=S( F α H )

In case of a full cone nozzle S is a circle with diameter C and S = 0785 C2

The capacity of the nozzle flows through the surface S but each smaller area inside the surface S will probably have a different value for the flow passing through itWe introduce then the value of Specific Capacity q

1) Specific Capacity

The function q depends upon the single point (xy) in the section S and then

Determining the function q is however very expensive therefore in practice two different functions are used which give in most occurrences sufficient information

2) Linear Distribution

3) Angular distribution

part Qpart x

qx =

Diagram 1

q = limΔS 0

ΔQΔS

q = = f (x y H)part Qpart S

part Qpart φ

qφ =

ΔQ is the liquid flowing through a surface ΔSwhere ΔS is a fraction of the surface S

x and y are the local coordinates in the section planewhere H is the distance of the test surface from the nozzle orifice

partQ is the variation in capacitywhere partx is the variation of a generic linear coordinate

partQ is the variation in capacitywhere partφ is the variation of a generic angular coordinate

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LIQUID SPRAY AND SPRAY NOZZLES Spray Distribution

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LIQUID SPRAY AND SPRAY NOZZLES Spray Distribution

Values extracted from these functions can characterize the spray and allow for drawing the diagrams defined as Distribution Curves

Analyzing the above curves it is possible to determine the type of water distribution along the spray coverage and the type of spray pattern like for example a full cone hollow cone flat or straight jet spray

Distribution measurement

The water distribution along the spray coverage is determined by means of an instrument called Patternator

A patternator consists of the following parts 1) Liquid collector2) Cell block3) Measure block4) Unloading block

The nozzle is above the instrument and it is orienta-ted in such a way the jet is collected into the upper liquid collectorThe liquid collector can be linear ( diagram 5 ) or round ( diagram 6 ) according to the test being runFrom the single parts in the collector the liquid is sent into the corresponding cells below (2)

The Measure block (3) determines the liquid content in each single cell then the unloading block (4) empties the instrument sending the liquid to the collection drain

There are two types of patternators

Analogic1 the different levels of liquid is visible through the transparent walls of the cells or pipes sometimes containing some kind of floating balls and a picture can be taken with a cameraDigital2 Delivering an automatic reading of the values in the cells the values being supplied as an electronic file from which a distribution curve can be easily obtained

Diagram 2 Linear distribution Diagram 3 Angular distribution

Diagram 4

Diagram 6 Circular collectorDiagram 5 Linear collector

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LIQUID SPRAY AND SPRAY NOZZLES Spray Distribution

Normalizing distribution curve

The values obtained from the cells of the patternator showing the water quantity collected in the single cells allow for preparing a Distribution curve which can be given as a single line curve or as a row of vertical barsThese resemble the liquid level collected into the glass pipes of the old type instrumentation

The curves prepared based on the liquid level in the single cells still are not precise they depend in fact from the testing time the longer this time the larger the liquid quantity sprayedTo eliminate the influence of time from the test it is necessary to transform the effective curves to normalized curves

Normalized4) linear distribution

Normalized5) angular distribution

Please note that Maximum value is the one belonging to the series of values measured in the cellsIn addition to the distribution it is possible to normalize the intervals to with the following formulas

Normalized 6) linear interval

Normalized 7) angular interval

The linear normalized amplitude is defined inside an interval [-1 +1]The angular normalized amplitude is defined inside an interval [0+2π]

Diagram 7 Effective linear distribution curve Diagram 8 Effective angular distribution curve

Mx

xx q

q=δ

N

πθ

2=Δ

Diagram 9 Normalized linear distribution curve Diagram 10 Normalized angular distribution curve

qx is the linear distribution of a generic cellwhere qx

M is the maximum linear distribution measured

qφ is the linear distribution of a generic cellwhere qφ

M is the maximum linear distribution measured

2 is the normalized linear amplitude of the spraywhere N is the number of active cells (active cells = cells containing liquid)

2π is the normalized angular amplitude of the spraywhere N is the number of active cells (active cells = cells containing liquid)

Mq

q

ϕ

ϕϕδ =φ

φ

φ

2

N=Δλ

2

N=Δλ

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Evaluation of spray distribution

To evaluate distribution curves it is necessary to take three properties into consideration

a) UNIFORMITY b) MONOTONY c) SIMMETRY

As described in the following diagrams and definitions

a) UNIFORM A distribution that minimizes the ratio AAdeg

b) MONOTONE Is a distribution with a curve which grows on the left side and decreases on the left side c) SYMMETRIC Is a distribution which minimizes the Ratio A+A-

Based on the above definitions the following curves show the ideal situations

The three properties are then evaluated by means of the following parameters

1 Integral uniformity

2 Incremental uniformity

3 Symmetry index

Complete details about the above formulas and definition can be found in our Technical Bulletin REL 080002 which shall be released from our Technical Department on request

Diagram 12Normalized and monotone distribution

Diagram 11Normalized and monotone distribution

Diagram 14Ideal monotony

Diagram 15Ideal symmetry

Diagram 13Ideal uniformity

1001 sdot=MA

AU

1002

2 sdot=lowastσ

U

1001

sdot⎥⎦

⎤⎢⎣

sdotminus=

lowast

lowast

δ

ε

NI S

sum minus=lowast

M

i iδδε

A is the area included in the normalized curvewhere Adeg is the rest of the area included in the 2x1 rectangle

Left side is the area -1 0where Right side is the area 0 +1

A+ is the area included below the curve on the right sidewhere A- is the area included below the curve on the left side

where

where δrsquo is the value of normalized liquid content in the symmetric cell N number of cells containing liquid in half of the diagram

lowast

lowast sum=

N

N

i i

δ

δ N Number of cells containing liquid

A area included below the curve AM area included below the ideal curvewhere

sum minus= +lowast

1

N

i ii δδσ

N Number of cells containing liquid

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SLIQUID SPRAY AND SPRAY NOZZLES Spray Distribution

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Liquids are characterized for their property of undergoing continuous deformation when subjected to shear stress The property of fluids (liquids or gases) to resist flowing due to the existence of internal friction within the fluid is called visco-sity

Thus if we imagine the different layers of fluid sliding one over the other with friction we can imagine that viscosity is defined the force required to move a unit area of fluid for a unit distance Viscosity is measured with many different systems among which the most used are the following

The following table shows correspondences between the most used viscosity units

The viscosity value of a liquid depends upon the temperature therefore the viscosity value must always be given with reference to a temperature value The viscosity of water (20deg C) is 1 Centipoise and 1 Centistoke since water mass density = 1

KINEMATIC SAYBOLT SAYBOLT ENGLER VISCOSITY UNIVERSAL FUROL

Centistoke Sq feetsec SSU SSF Degrees

100 000001076 310 --- 100

500 000005382 424 --- 137

1000 00001076 588 --- 183

1566 00001686 80 --- 245

2052 00002209 100 --- 302

2515 00002707 120 --- 357

4295 00004623 200 --- 592

1080 0001163 500 523 1460

1510 0001625 700 720 2044

1942 0002090 900 921 2628

3023 0003254 1400 143 4090

3885 0004182 1800 183 5260

5394 0005806 2500 254 7300

10788 001161 5000 509 146

15103 001626 7000 712 204

19419 002092 9000 916 263

32365 003483 15000 1526 438

METHOD UNIT DIMENSIONS NOTES

1 Dynamic viscosity(Absolute viscosity) Poise ML T-1 Poise = 100 Centipoises = (1 dyne per seccm2)

2 Kinematic viscosity Stoke L2 T-1 1 Stoke = 100 Centistoke = (cm2sec)Kinematic viscosity = Dynamic viscositydensity

3 SSUSSF

One of the most widely instruments to determine is the Saybolt viscosimeter which measures the time in seconds required for a fixed volume of a given liquid to flow through an orificeSSU = Seconds Saybolt Universal relates to a smaller orifice for less viscous liquidsSSF = Seconds Saybolt Furol relates to a larger orifice for more viscous liquids

LIQUID SPRAY AND SPRAY NOZZLES Influence of liquid viscosity

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Viscosity influence on nozzle flow rate

AlI nozzle Catalogue data refer to spraying water (water cinematic viscosity is equal to 1 Centistoke)A liquid with viscosity higher than water will require more energy to be pumped and sprayed and will flow with lower velocity at the same pressure and this will cause a reduction in the turbulence of the flow For the above reason nozzles working on the turbulence principle like normal full cone nozzles and whirl hollow cone nozzles will show an increase in capacity while spraying liquids with viscosity higher than water This increase is very consistent for small size nozzles where the small radius of the whirl chamber tends to cause high turbu-lence in the flow and tends to diminish and to disappear for nominal capacity valves (capacity values at 3 bar) larger than 15 liters per minute

The graph below shows for a liquid with a viscosity of about 4 Centistokes typical variations in the nozzle flow rate value for different values of the nozzle whirl chamber diameter As it may be seen these variations can be neglected in most practical applications where nozzles with whirl chamber diameters well over 3 mm are used

For other types of nozzles not working on the turbulence principle the increase on viscosity will simply reduce the liquid exit velocity at the orifice thus causing a decrease in capacity Experience shows that this decrease ranges between 3 and 6 of nominal water capacity that is to say that the variation introduced is in the same order of magnitude as the nozzle flow rate toler-ance

Viscosity influence on nozzle spray angle and spray pattern

With reference to the theory of jet break-up and droplet information it can be easily imagined that spraying a liquid more viscous than water is a difficult task

Al the properties of the spray tend to worsen therefore one can expectA higher value for the minimum operating pressure that is the pressure value which allows for obtaining a well defined 1 spray with the expected spray angle A worse spray distribution since the viscous behavior of the liquid makes it more difficult to pro-duce fine droplets and 2 to distribute them evenly with the desired spray pattern A narrower spray angle It is difficult to give guidelines since results on different nozzles at different pressures and with 3 different liquids are scarcely predictableHowever our experience shows that in many cases the use of impact nozzles can give acceptable results where all other type of nozzle failsA laboratory test or a field test are stili the safest way to obtain sound results

50

45

40

35

30

25

20

15

10

5

0 2 3 4 5 6 7 8 9

Increase Flow rate vs Whirl Chamber Diameter

Incr

ease

Flo

w R

ate

[mm

]

Whirl Chamber Diameter [mm]

LIQUID SPRAY AND SPRAY NOZZLES Influence of liquid viscosityLI

QUID

SPR

AYAN

D SP

RAY

NOZZ

LES

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With reference to the Bernoulli Rule as exposed in page 6 one can say that the pressure energy of the liquid flow at the nozzle inlet is transformed totally (minus some losses due to friction inside the nozzle) into liquid velocity at the nozzle orificeCatalogue figures give nozzle capacities when spraying waterIf the specific gravity or density of the liquid is different from that of water the available pressure energy will produce a different liquid velocity at the nozzle orificesIn other words a given quantity of energy will spray always the same quantity of liquid mass but different volumes (flow rates) according to the liquid specific gravity or density

Therefore a liquid heavier than water will exit the nozzle with a lower velocity at lower flow rate while to the contrary a liquid lighter than water will be sprayed at higher velocity at higher flow rate

The following formula is to be applied

The table below gives the value of a correction factor to obtain the flow rate of a liquid with different specific weight as water

WhereQL Liquid flow rateQW Water flow rateF Correction factor

kgliter Libregallon F

06 50 129

07 58 120

08 67 112

09 75 105

10 83 100

11 92 095

12 100 091

13 109 088

14 117 085

15 125 082

16 134 079

17 142 077

18 150 075

19 159 073

20 167 071

QL = F QW8

LIQUID SPRAY AND SPRAY NOZZLES Influence of liquid specific gravity

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The spraying water impact of a nozzle depends on several factors and more precisely spray distribution pattern and spray angle The first step to calculate the impact value which is usually expressed in Kilograms per square centimeter is to deter-mine Total Theoretical lmpact Value using the following formula

The obtained value has to be multiplied by the Total Theoretical Impact per Square Centimeter Coefficient (E)The final value is the Spraying Liquid Impact expressed in kgpcm2Of course not alI the energy of the fluid vein is transferred to the impact point

A part of this energy sometimes a considerable part goes to obtain a desired spraying angle by having the liquid vein acquire a high rotational speed inside the whirl chamber The highest value of impact is obtained with straight jet nozzle and the value can be calculated multiplying spraying pressure per 19The tables below containing the Total Theoretical Impact sqcm coefficient values for different spray pattern nozzles for a dis-tance of 300 mm

[kgpcm2]

TOTAL THEORETICAL IMPACT PER SQ CM COEFFICIENT AT DISTANCE OF 300 MM (E)

Spray Flat jet nozzle Spray Full cone nozzle Spray Hollow cone nozzle Angle Angle Angle

15deg 0300 15deg 0110 25deg 0180 35deg 0130 30deg 0025 40deg 0120 50deg 0100 50deg 0010 65deg 0070 65deg 0004 60deg80deg 001002 80deg 0050 80deg 0002 100deg 0001

WhereQ is the flow rate at working pressure in lpmP is the pressure value in kgpcm2

[kgpcm2]TTI = 0024 Q P

SLI = E TTI

9

10

LIQU

ID S

PRAY

AND

SPRA

Y NO

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SLIQUID SPRAY AND SPRAY NOZZLES Jet impact

31wwwpnr-nozzlescomCTG SH 07 EU

Jet impact diagram

A further parameter to characterize the performance of a spray nozzle is the distribution of the jet impact force which could be derived by means of mathematical methods from the values of the spray distribution onto the surface covered by the spray but which can more easily be measured with the help of specifically designed instrumentation

In some applications the jet impact force Is the most important parameter used to realize the required processSteel sheet descaling in a rolling mill is a typical example where the jet impact is required to take away the surface scale and obtain a perfectly even surfaceFor that reason special nozzles have been developed to perform this very task where service life impact value and spray distribution reach the values required for satisfactory resultThese test are performed in a laboratory equipped with a specifically designed instrumentation where the high pressures involved in these process can be reached which can measure the pressure values along a matrix of points distributed in the spray area covered by the nozzle

These values are supplied both in a table of values and as a 3D pressure diagram similar to those shown below

On such applications where producing high impact values in the jet is necessary it is of paramount importance that the liquid flow turbulence is kept to a minimum and therefore it is widely used to insert into the nozzle entrance devices designed to improve the operating conditions by forcing the liquid flow through straight passages with several different shapes by doing so the impact delivered by the spray is increased with the same feed pressure

One typical shape used by Pnr is shown on the right and the two dia-grams below show the impact force diagrams for the same nozzle with and without a flow straightener the reduction of flow turbulence can lead in increase of impact force often higher than 20Further improvements of course are available when the nozzle inside profile is properly designed in order to avoid sharp cross section changes and all surfaces are finished as smoothly as possible

Typical design of a Pnr flow straightener

Impact pressure diagram with flow straightenerImpact pressure diagram without flow straightener

LIQU

ID S

PRAY

AND

SPRA

Y NO

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S

LIQUID SPRAY AND SPRAY NOZZLES Jet impact

32 wwwpnr-nozzlescom CTG SH 07 EU

LIQUID SPRAY AND SPRAY NOZZLES Pressure drop through a nozzle

Pressure drop through a nozzle

Some of our customers have asked us In the past which Is the pressure drop through a nozzle since they consider a nozzle one of the parts in a piping like a valve or an elbow which causes a given pressure drop along the line

The reality is different and can be easily understood when considering the Bernoulli formula [2] as given at page 19 of this manual the formula says that the total energy of a liquid flow is made from the addition of three facors

Potential energy due to elevationbullPressure energybullVelocity energybull

When we apply the formula at the entrance and at the outlet ( the orifice ) of a nozzle and we neglect the influence of turbulence losses in between we can easily see that

The potential energy variation can be neglected because of the limited dimensions of the nozzle since the distance bullbetween the nozzle entrance and the nozzle orifice plays no role-The pressure energy variation is important since the liquid pressure value falls abruptly from the pressure inside the feed bullpipe to the ambient pressureThe velocity energy variation is also consistent since the liquid is ejected from the orifice at high speedbull

In other words the pressure energy of the liquid flowing through the orifice is suddenly transformed in liquid drops velocity which is exactly what a nozzle is designed to do

This is shown from equation [3] at page 19 which allows the exit velocity from the nozzle to be calculated from the pressure inside the pipe ( we actually consider the pressure difference between the inside of the pipe and the ambient pressure in this formula )

In other words all the energy still available at the nozzle is converted into velocity or if you so prefer you have a total pressure fall The system designer shall therefore evaluate all the pressure drop between the pump outlet flange and the nozzle entrance in order to be sure that the nozzle feed pressure is sufficient to assure the desired capacity for the liquid being sprayed

parameters valuesat nozzle outlet

nozzle inlet nozzle oulet or orice

feed pressure

inlet velocity

parameters valuesat the nozzle inlet

(A)potential elevation

energy

(A)velocity ( kinetic ) energy

(A)pressure energy

ambient pressure

exit velocity

LIQU

ID S

PRAY

AND

SPRA

Y NO

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S

33wwwpnr-nozzlescomCTG SH 07 EU

NOZ

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LS

The choice of the right material for a nozzle is sometimes the most important one to do since the nozzle operating life depends upon it There are several factors to influence or shorten the nozzle operating life sometimes more than one at the same time the most important being

Wear from solid particles suspended into the liquid being sprayed1 Chemical corrosion from the liquid being sprayed 2 Chemical corrosion from the ambience outside the nozzle3 Exposure to high temperature 4 Exposure to mechanical shocks5

NOZZLE MATERIALSPnr material codes 34Properties of materials 35Mechanical properties of materials 39Chemical resistance of materials 40

NOZZLE MATERIALS

34 wwwpnr-nozzlescom CTG SH 07 EU

PNR has adopted a short code to identify construction materials for nozzles and nozzle partsHere below the most frequenty used materials

MATERIAL STANDARDS

The following standards are mentioned with reference to materials identification

NOZ

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MAT

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LS

A1 Free Cutting Steel E1 TEFLONreg (PTFE) L3 NICROFERreg 5923

A2 Carbon Steel E3 DELRINreg (POM) L4 STELLITEreg 6

A8 Zinc Plated Mild Steel E6 PERSPEXreg (PMMA) L5 HASTELLOYreg B2

A9 Nickel Plated Mild Steel E7 VITONreg (FPM) L6 HASTELLOYreg C4

B2 AISI 304 Stainless Steel E8 NBR- Sh 70 Rubber L61 HASTELLOYreg C22

B3 AISI 316 Stainless Steel E81 SANTOPRENEreg Rubber L62 ULTIMETreg

B31 AISI 316L Stainless Steel E82 KLINGERITEreg L7 NICKEL 201

B4 AISI 321 Stainless Steel E83 HYPALONreg L8 HASTELLOYreg C276

B8 AISI 309 Stainless Steel E91 Silicon L9 SANICROreg 28 SS

B81 AISI 310 Stainless Steel F12 Tungsten Carbide (TC) N1 AISI 302 Stainless Steel

C1 AISI 420 St Steel hardened F2 PIREXreg P6 ABS

C4 AISI 317 Stainless Steel F3 Rubin P7 FASIT OIL

C6 SAF 2205 Stainless Steel F4 Zapphire P8 EPDM ShA Rubber

D1 Polyvinylchloride (PVC) F5 Ceramic P9 STIROLUXreg 637

D2 Polypropylene (PP) F6 Silicon Carbide (SC) T1 Brass

D3 Polyamide (PA) G1 Cast Iron T3 Copper

D5 Powder Charged PP H1 Titanium T5 Bronze

D6 Fiberglass Charged PP L1 MONEL 400 T8 Nickel Plated Brass

D7 High Density Polyethylene L2 INCOLOYreg 825 V1 Aluminium

D8 Polyvinylidenefluoride (PVDF) L21 INCONELreg 600 V7 Aluminium ENP

STANDARD ORGANIZATION COUNTRY STANDARD CODE

AFNOR Association Franccedilaise de Normalisation France NF

AISI American Iron and Steel Institute USA AISI

ANSI American National Standards Institute USA ANSI

ASTM American Society for Testing and Materials USA ASTM

BSI British Standards Institution UK BS

DIN Deutsches Institut fuumlr Normung Germany DIN

DSIT Dansk StandardsInformation Technology Denmark DS

ISO International Organization for Standardization International ISO

JIS Japanese Institute for Standard Japan JIS

UNI Ente Nazionale di Unificazione Italy UNI

NOTEThe complete list of the Materials Codes may be requested to our Technical Service mentioning release code TGCE CODMAT

NOZZLE MATERIALS PNR material codes

35wwwpnr-nozzlescomCTG SH 07 EU

NOZ

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MAT

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LS

B1 AISI 303 STAINLESS STEEL

Chemical composition CR 1750 NI 850 S 025 Coding correspondence

Type Stainless Steel Austenitic AISI 303

Hardening Not possible BS 303 S 21

Annealing 1050 1100deg C in water DIN Wnr 14305

Welding Possible with precautions Euro X10CrNiS1809

Corrosion properties

Good resistance Atmospheric exposure food substances organic chemicalsLow resistance Chlorides reducing acids and over 800deg C

JIS SUS 303

NF Z6CN 18-09

SIS 2346

UNI XWCrNiS 1809

B3 AISI 316 STAINLESS STEEL

Chemical composition C 005 CR 170 NI 120 MO 225 Coding correspondence

Type Stainless Steel Austenitic AISI 316

Hardening Not possible BS 316 S 21

Annealing 1050 1100deg C in water DIN Wnr 14401

Welding Easy using same steel electrodes Euro X6CrNiMo17122

Corrosion properties

Good resistance Atmosphere great number of salts organic acids foodsLow resistance Solutions of reducing acids temperatures over 500deg C

JIS SUS 316

NF Z6CND 17-11

SIS 2347

UNI X5CrNiMo1712

B31 AISI 316L STAINLESS STEEL

Chemical composition C 003 CR 170 NI 130 MO 225 Coding correspondence

Type Stainless Steel Austenitic AISI 316 L

Hardening Not possible BS 316S12

Annealing 1050 1100deg C in water DIN Wnr 14404

Welding Easy using same steel electrodes Euro X3CrNiMo1810

Corrosion properties

Good resistance Atmosphere great number of salts organic acids foods salt waterLow resistance Solutions of reducing acids temperatures over 500deg C

JIS SUS 316L

NF Z2CND17-12

SIS 2348

UNI X2CrNiMo 1712

NOZZLE MATERIALS Properties of materials

36 wwwpnr-nozzlescom CTG SH 07 EU

C1 AISI 420 STAINLESS STEEL

Chemical composition C 020 CR 1300 Coding correspondence

Type Stainless Steel Martensitic AISI 420

Hardening 980deg - 1030deg C in oil BS 420 S 29

Annealing 750deg - 800deg C in air DIN Wnr 14021

Welding Possible with precautions Euro X20Cr13

Corrosion properties Good resistance Drinkable water steamgasoline oil alcohol ammonia

JIS SUS 420 J1

NF Z20C13

SIS 2303

UNI X20Cr13

C2 AISI 416 STAINLESS STEEL

Chemical composition C 012 CR 1250 S 022 Coding correspondence

Type Stainless Steel Martensitic AISI 416

Hardening 950deg - 1100deg C in oil BS 416 S 21

Annealing 750deg - 800deg C DIN Wnr ---

Welding Not possible Euro X120CrS13

Corrosion properties Good resistance Drinkable water steamgasoline oil alcohol ammonia

JIS SUS 416

NF Z12CF13

SIS ---

UNI X12CrS13

D8 POLYVINYLIDENE FLUORIDE (PVDF)

Description HIGH-MOLECULAR WEIGHT THE TOUGHEST OF THE FLUOROCARBON RESINS

Trade names amp SuppliersKYNAR (Atochem North America Inc formerly Penwalt Corporation)

SOLEF (Solvay Polymer Corporation)

Physical andMechanical Properties

Excellent resistance to abrasion and stress fatigue

Extremely pure opaque white resin

Thermal Properties UsefuI in temperatures ranging from -73 149degC (-100 300degF)Heat deflection temperature is (8090deg C at 182 Bars (176 194deg F at 264 psi)

Chemical Compatibility

Excellent chemical resistanceCan be used with wet or dry halogens most strong acids and bases aliphatics aromaticsalcohols and strong oxidizing agentsNot recommended for contact with ketones esters amines and some organic acids(fuming sulfuric acid)

NOZZLE MATERIALS Properties of materialsN

OZZL

E M

ATER

IALS

37wwwpnr-nozzlescomCTG SH 07 EU

E1 POLYTETRAFLUOROETHYLENE (PTFE)

Description FLUOROPLASTIC THAT HAVE SOME OR ALL OF THEIR HYDROGEN MOLECULESREPLACED BY FLUORINE

Trade names amp Suppliers

TEFLON TFE FEP and PFA (Dupont Polymer Products)

NEOFLON (Daikin)

FLUON (ICI Americas Inc)

SST-2SST-3 (Shamrock Technologies Inc)

Physical andMechanical Properties

Low coefficient

Low adhesiveness

Buona resistenza agli agenti atmosferici

Good weatherabilityLow resistance to creep and wear unless reinforced with glass figravebers which results in superior resistance

Thermal Properties High and low temperature stabilityHeat deflection temperatures range from 4855deg C at 182 bar (118-132deg F at 264 psi)

Chemical CompatibilityChemically inert

Totally insoluble

E3 ACETAL (ACETAL HOMOPOLYMERS AND COPOLYMERS)

Description HIGHLY CRYSTALLINE RESINS BASED ON FORMALDEHYDE POLYMERIZATION TECHNOLOGY

Trade names amp Suppliers

DELRIN (Dupont Polymer Products Corporation)

CELCON (Hoechst Celanese Corporation)

ULTRAFORM (BASF Corporation)

RTP 800 (RTP Corporation)

LUPITAL amp TENAL (Franklin Polymers Inc)

FULTRON 404 (ICI Americas Inc)

Physical andMechanical Properties

High tensile strength rigidity and esilience

High fatigue endurance

Excellent dimensional stability

Low coefficient of friction

Outstanding abrasion and wear resistance

Excellent creep resistance

Thermal Properties Heat deflection temperatures range from 110 -136deg C at 182 bars(230 - 270deg F at 264 psi) higher if glass figravelled

Chemical Compatibility

Remains stable in long-term high temperature water immersionExcellent resistance to chemicals and solvents but prolonged exposure to strong acids not recommendedNote Suitable for close-tolerance high-performance partsAvailable for machined parts or may be injection molded

NOZZLE MATERIALS Properties of materials

NOZ

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L6 HASTELLOY C4

PHYSICAL AND MECHANICAL PROPERTIES CHEMICAL COMPOSITION CORROSION RESISTANCE

R = 650800 Mpa C = 0015 max

Very good against pitting and tensile-corrosion specially in oxydizing atmosphereResistance in welded joints definitely better than C 276 lower than C22

Rp02 = 250470 Mpa Ni = 65

HRB = 90 Cr = 160

Mo = 155

W = --

Fe = 3 max

Ti = 05

Co = 2 max

APPLICATIONSRecommended for applications with strongly oxidizing atmosphere

L61 HASTELLOY C 22

PHYSICAL AND MECHANICAL PROPERTIES CHEMICAL COMPOSITION CORROSION RESISTANCE

R = 700800 Mpa C = 001 max

Excellent performances with oxydizing atmospheres as well as for pitting and tensile-corrosion conditionsVery good resistance in reducing atmospheres and for welded joints

Rp02 = 360420 Mpa Ni = 56

HRB = 93 Cr = 22

Mo = 13

W = 3

Fe = 3

Ti = --

Co = 25 max

APPLICATIONSChemical industry (gas ducts gas washing and treatment systems phosphoric acid production) Heat exchangers pumps chlorination reactors

L8 HASTELLOY C 276

PHYSICAL AND MECHANICAL PROPERTIES CHEMICAL COMPOSITION CORROSION RESISTANCE

R = 600800 Mpa C = 0015 max

Very good in reducing and oxydizing atmospheresVery good against pitting and tensile-corrosionAcceptable resistance in welded jointsIn cast parts excessive segregation not eliminated by thermal treatment of annealing makes it convenient to use C22 or C4 qualitieswhich assure better corrosion resistance and mechanical properties

Rp02 = 300370 Mpa Ni = 57

HRB = 90 Cr = 145165

Mo = 1517

W = frac345

Fe =

V = 035 max

Co = 25 max

APPLICATIONSChemical industry (air ducts scrubbers fans) Paper industry Thermoelectric plants Steel thermal treatments

NOZ

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39wwwpnr-nozzlescomCTG SH 07 EU

MATERIALTENSILE STRENGHT

CORROSION RESISTANCERp 02 R

20degC 800degC 20degC 800degC

(68degF) (1408degF) (68degC) (1408degC)

AISI 302 280 100 680 200

Good sensitive to corrosionbetween grains for slow heatingand cooling in the 450-900deg Crange temperature

AISI 303 280 100 680 200 Discrete

AISI 304304L 270 90 600 100Good especially for 304L304 sensitive to corrosionbetween grains like AISI 302

AISI 309 250 100 640 220 Good Sensitive to corrosion between grains like AISI 302

AISI 310 310 170 650 270Good (gt 304 - 304L)Sensitive to corrosionbetween grains like AISI 302

AISI 316316L 270 110 560 220 Very high especially for 316L

AISI 321 210 100 540 140 Good

AISI 347 280 120 620 200 Good

AISI 416 620 70 750 90

Good in medium corrosive ambient (atmosphere water gasoline alcohol N1-13 foods)Not in high corrosive

BRASS 110-150 --- 360-410 --- Good especially when nickel plated

BRONZE 100-300 --- 200-600 --- Discrete especially with sea water

CAST IRON le 500 V 100-800 V

NICKEL ALLOYS 100-1000 V 300-1300 VVery high also for high temperature To use in the temperaturerange 800-1200deg C

PLASTICS --- --- 20-200 ---

Good also for erosionGenerally they are attackedwith oxidizers like nitric acidhalogens ect

PTFE --- --- 30-40 ---

Very high except for elementarystate of alkaline metalsand to compounds containingfluorine at high temp

DUPLEX STEEL gtAISI 3 gtAISI 3 gtAISI 3 gtAISI 3 Very high also with high temperatureand also for pitting

TITANIUM alloy 195-850 V 300-900 VVery high in oxidizing ambientVery low in reducing ambient and with compounds containing fluorine

Legend Rp 02 = 02 YIELD STRENGHT [MPa]R = ULTIMATE TENSILE STRENGHT [MPa]V = To verify time by time

NOZZLE MATERIALS Mechanical properties of materials

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PIPI

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PIPINGPipes data 74Economic pipe sizes 75Pressure drop in clean steel pipes 76Flange dimensions 78Sieve size conversion chart 80

PIPING

74 wwwpnr-nozzlescom CTG SH 07 EU

The following table report the data of pipes according to ANSI B3619 that is one of the most used standards that regulate welded stainless steel pipes

DN NPS OD[mm]

SCHEDULE

5S 10S 40SSTD 80SXS

t m t m t m t m

[mm] [kgm] [mm] [kgm] [mm] [kgm] [mm] [kgm]

6 18 103 NA NA 124 028 173 037 241 048

8 14 137 NA NA 165 050 224 064 302 081

10 38 172 NA NA 165 064 231 086 320 112

15 12 213 165 081 211 101 277 128 373 164

20 34 267 165 103 211 130 287 171 391 223

25 1 334 165 131 277 212 338 254 455 328

32 1frac14 422 165 167 277 273 356 344 485 453

40 1frac12 483 165 192 277 315 368 411 508 549

50 2 603 165 242 277 399 391 551 554 759

65 2frac12 730 211 374 305 534 516 875 701 116

80 3 889 211 458 305 655 549 115 762 155

90 3frac12 1016 211 525 305 752 574 138 808 189

100 4 1143 211 592 305 849 602 163 856 226

125 5 1413 277 960 340 117 655 221 953 314

150 6 1683 277 115 340 140 711 287 1097 432

200 8 2191 277 150 376 202 818 431 1270 656

250 10 2730 340 229 419 282 927 611 1270 827

300 12 3239 396 317 457 365 953 749 1270 988

350 14 3556 396 348 478 419 NA NA NA NA

400 16 4064 419 421 478 480 NA NA NA NA

450 18 457 419 474 478 541 NA NA NA NA

500 20 508 478 602 554 696 NA NA NA NA

550 22 559 478 662 554 767 NA NA NA NA

600 24 610 554 837 635 959 NA NA NA NA

Where

DN = Nominal diameter NPD = Nominal Pipe Size OD = Outside Diameter t = Wall Thickness m = Specific WeightPIPI

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PIPING Pipes data

75wwwpnr-nozzlescomCTG SH 07 EU

The following Specific Pressure Drops (Y) are normally used in the good engineering practice(where Y=ΔPL ΔP Pressur Drop and L Pipe Lenght)

For pipe sizing the Velocity (V) is also usedIn the following table are shown the typical liquid velocities in steel pipes

Some fixed pressure drop values indicationsfor gate valves (fully open) consider a pressure drop of 5 metersbullfor normal bends consider a pressure drop of 5 metersbullfor a check valve consider a pressure drop of 15 metersbull

In the succeeding tables we show the velocity and specific pressure drop for several flow rates and pipe diameters

Not boiling waterY = 02divide05 bar100 m for pump discharge (07 bar100 m max if P gt 50 bar)

Y lt 0110 bar100 m for pump suction

Boiling water Y = 004divide005 bar100 m for pump suction (velocity = 03divide09 ms)

LIQUID LINE TYPE

Specific Pressure Dropsvs Velocity [ms]

0 lt V lt 2 3 lt V lt 10 10 lt V lt 20

NOT BOILING WATER

Pump suctionPump discharge (long)Discharge leads (short)Boiler feedDrainsSloped sewer

03 divide 0606 divide 0912 divide 2712 divide 2709 divide 12

-

06 divide 1209 divide 1515 divide 3715 divide 3709 divide 1509 divide 15

09 divide 1812 divide 2124 divide 4224 divide 42

-12 divide 21

HYDROCARBON LIQUIDS(normal viscosity)

Pump suctionDischarge heather (long)Discharge leads (short)Drains

05 divide 0808 divide 1112 divide 2709 divide 12

06 divide 1209 divide 1515 divide 3709 divide 15

09 divide 1812 divide 2124 divide 46

-

MEDIUM VISCOSITY OILPump suctionDischarge (short)Drains

--

03

05 divide 0901 divide 0209 divide 15

08 divide 1501 divide 0312 divide 18

OTHER WATERCooling tower Chilled waterSea water and generally foulingwater (long pipes) ()

06 divide 09 09 divide 15 12 divide 21

Note () In this case Cameron method has to be used with C=1 Y = 005 divide 012 bar100 m for principal manifold Y = 012 divide 023 bar100 m for secondary manifold

PIPI

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PIPING Economic pipe sizes

76 wwwpnr-nozzlescom CTG SH 07 EU

18rdquo 14rdquo

1 0350 0370 0200 0090 38rdquo 12rdquo

2 0705 1340 0395 0331 0223 0082 0145 0029 34rdquo

3 1060 2890 0593 0673 0333 0176 0217 0061 0125 0016 1rdquo

4 1410 4940 0788 1150 0444 0291 0290 0101 0167 0027 0110 0010

5 1760 7460 0985 1750 0556 0424 0362 0149 0209 0040 0137 0014

6 1180 2460 0667 0594 0434 0207 0251 0054 0165 0019 114rdquo

8 1580 4060 0892 1020 0579 0351 0335 0091 0219 0033 0126 0009 112rdquo

10 1110 1530 0724 0534 0418 0136 0274 0049 0158 0012 0116 0006

15 1670 3250 1090 1130 0627 0284 0411 0099 0236 0026 0174 0012

20 2rdquo 2230 5600 1450 1900 0836 0481 0549 0168 0315 0043 0233 0021

30 0212 0013 212rdquo 2170 4130 1250 1020 0823 0353 0473 0092 0348 0043

40 0283 0022 0190 0007 2900 7180 1670 1760 1100 0606 0631 0155 0465 0073

50 0354 0032 0237 0012 2090 2700 1370 0911 0789 0233 0581 0108

60 0424 0044 0284 0017 2510 3810 1650 1290 0943 0321 0697 0150

70 0495 0079 0332 0022 3rdquo 2930 5120 1920 1720 111 0434 0814 0199

80 0566 0074 0379 0028 0248 0010 312rdquo 2190 2210 126 0554 0925 0253

90 0636 0093 0427 0035 0279 0013 0209 0006 2470 2770 142 0692 1040 0319

100 0707 0114 0474 0043 0310 0015 0232 0007 4rdquo 2740 3400 158 0843 1160 0392

150 1060 0238 0711 0090 0464 0031 0349 0016 0272 0008 4110 7440 236 181 1740 0828

200 1410 0414 0948 0153 0619 0053 0466 0027 0362 0014 315 314 2330 1450

250 1760 0625 1190 0233 0774 0080 0581 0040 0453 0021 5rdquo 2900 2200

300 2120 0889 1420 0324 0930 0112 0698 0055 0543 0030 0352 0011 3480 3070

350 2470 1190 1660 0438 1080 0150 0815 0074 0634 0040 0411 0014 6rdquo 4070 4160

400 2830 1550 1900 0563 1240 0195 0935 0096 0724 0051 0469 0018 0341 0007 4650 5380

450 3180 1930 2130 0707 1390 0242 1050 0120 0815 0063 0528 0022 0366 0009 5230 6790

500 3540 2380 2370 0867 1550 0298 1170 0147 0902 0076 0587 0027 0407 0011

550 3880 2870 2610 1040 1700 0354 1280 0174 0991 0092 0645 0032 0447 0013

600 4240 3390 2840 1220 1860 0418 1400 0204 1090 0110 0704 0037 0488 0015

650 4590 5560 3080 1420 2010 0486 1510 0239 1180 0127 0762 0043 0529 0017

700 4950 4550 3320 1650 2170 0560 1630 0275 1270 0146 0821 0050 0569 0020

750 5300 5200 3560 1880 2320 0637 1750 0314 1360 0164 0879 0057 0610 0023

800 3790 2130 2480 0721 1860 0354 1450 0185 0936 0064 0651 0025 8rdquo

850 4030 2390 2630 0805 1980 0395 1540 0209 1000 0072 0692 0028 0403 0007

900 2790 0901 2090 0438 1630 0232 1050 0008 0732 0032 0427 0008

950 2940 1000 2210 0486 1720 0258 1120 0087 0773 0036 0451 0010

1000 3100 1110 2320 0534 1810 0284 1170 0096 0814 0039 0474 0011

1100 3410 1290 2560 0643 1990 0341 1290 0116 0895 0047 0522 0012

1200 3720 1 580 2800 0763 2170 0403 1410 0135 0974 0055 0569 0015

1300 3030 0890 2360 0473 1530 0157 1060 0063 0616 0017

1400 3260 1020 2540 0544 1640 0183 1140 0072 0664 0019

1500 3490 1170 2720 0617 176 0208 1220 0083 0712 0022

1600 3720 1330 2890 0697 1880 0234 1300 0093 0758 0025

1700 10rdquo 3950 1490 3080 0784 1990 0260 1380 0104 0806 0028

1800 0546 0010 3260 0875 2110 0290 1470 0116 0854 0032

1900 0575 0012 3440 0965 2230 0323 1550 0129 0901 0034

2000 0606 0012 3617 1060 2340 0356 1630 0143 0946 0037

2200 0667 0015 3980 1280 2580 0429 1790 0172 1050 0045

2400 0727 0017 12rdquo 2820 0507 1950 0200 1140 0053

2600 0788 0021 0563 0009 3050 0589 2110 0234 1230 0061

2800 0848 0023 0606 0010 14rdquo 3280 0676 2280 0268 1330 0070

3000 0909 0026 0649 0011 0532 0007 3520 0773 2440 0306 1420 0080

3500 1060 0035 0760 0015 0620 0009 4110 105 2850 0416 1660 0108

4000 1210 0045 0866 0020 0709 0012 16rdquo 4690 135 3250 0532 1900 0139

4500 1360 0056 0976 0025 0798 0015 0606 0007 3660 0674 2130 0173

5000 1520 0069 1080 0029 0886 0018 0674 0009 4070 0822 2370 0212

6000 1810 0097 1290 0042 1070 0026 0808 0013 18rdquo 4880 1160 2850 0301

7000 2120 0130 1510 0055 1240 0035 0940 0017 0741 0010 5690 1580 3310 0403

8000 2420 0168 1730 0072 1420 0045 1080 0022 0847 0012 6510 2050 3790 0525

9000 2730 0210 1950 0091 1600 0056 1210 0027 0954 0015 4270 0659

10000 3030 0257 2170 0111 1770 0067 1350 0033 1050 0019 4740 0801

Legend Q Water Flow Rate (Lpm) V Velocity (ms) Y Specific Pressure Drops (bar100m)Water at ambient temperature in straight pipe

SPECIfIC PRESSURE DROPS fOR WATER fLOW IN CLEAN STEEL PIPE SCH 10S

Q V Y V Y V Y V Y V Y V Y V Y V Y [lm] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m]

PIPI

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SPECIfIC PRESSURE DROPS fOR WATER fLOW IN CLEAN STEEL PIPE SCH 40S

Legend Q Water Flow Rate (Lpm) V Velocity (ms) Y Specific Pressure Drops (bar100m)Water at ambient temperature in straight pipe

18rdquo 14rdquo

1 0458 0726 0251 0170 38rdquo 12rdquo

2 0918 2590 0501 0600 0272 0136 0170 0044 34rdquo

3 1380 5590 0752 1220 0407 029 0255 0091 0144 0023 1rdquo

4 1840 9570 1000 2090 0543 048 0340 0151 0192 0038 0120 0012

5 2290 14450 1250 3180 0679 070 0425 0223 0241 0057 0150 0017

6 1500 4460 0815 0980 0510 0309 0289 0077 0180 0024 114rdquo

8 2010 7360 1090 1690 0680 0524 0385 0129 0240 0041 0138 0011 112rdquo

10 1360 2520 0850 0798 0481 0193 0300 0061 0172 0015 0127 0008

15 2040 5370 1280 1690 0722 0403 0450 0124 0258 0032 019 0015

20 2rdquo 2720 9240 1700 2840 0962 0683 0600 0210 0344 0054 0254 0026

30 0231 0016 212rdquo 2550 6170 1440 1450 0900 0442 0517 0114 038 0053

40 0308 0027 0216 0010 3400 10720 1920 2500 1200 0758 0689 0193 0507 0091

50 0385 0039 0270 0017 2410 3830 1500 1140 0861 029 0634 0135

60 0462 0055 0324 0023 2890 5410 1800 1610 103 0400 0761 0187

70 0539 0098 0378 0031 3rdquo 3370 7270 2100 2150 1210 0541 0888 0248

80 0616 0092 0432 0039 028 0014 312rdquo 2400 2760 1380 0690 1010 0315

90 0693 0115 0486 0048 0315 0017 0235 0008 2700 3470 1550 0862 1140 0397

100 0770 0141 0540 0059 035 002 0261 0010 4rdquo 3000 4250 1720 1050 1270 0488

150 1150 0295 0810 0125 0524 0042 0392 0021 0304 0011 4500 9300 2580 2260 1900 1030

200 1540 0512 1080 0212 0699 0072 0523 0036 0405 0019 3440 3910 2540 1810

250 1920 0773 1350 0322 0874 0108 0653 0053 0507 0028 5rdquo 3170 2740

300 2310 1100 1620 0449 105 0152 0784 0074 0608 004 0387 0014 3800 3820

350 2690 1470 1890 0606 122 0203 0915 0099 0710 0053 0452 0018 6rdquo 4440 5180

400 3080 1920 2160 0780 14 0264 1050 0128 0811 0068 0516 0023 0375 0009 5070 6690

450 3460 2390 2430 0979 157 0328 1180 0161 0912 0084 0581 0028 0402 0012 5710 8450

500 3850 2950 2700 1200 175 0403 1310 0196 1010 0101 0646 0034 0447 0014

550 4230 3550 2970 1440 192 0479 1440 0232 1110 0122 0710 0041 0491 0016

600 4620 4200 3240 1690 2100 0566 1570 0273 1220 0146 0775 0047 0536 0019

650 5000 6880 3510 1970 2270 0658 1700 0319 1320 0169 0839 0055 0581 0022

700 5390 5630 3780 2280 2450 0759 1830 0368 1420 0194 0904 0063 0625 0025

750 577 6440 4050 2600 2620 0863 1960 042 1520 0218 0968 0072 067 0029

800 4320 2950 2800 0977 2090 0473 1620 0246 1030 0081 0715 0032 8rdquo

850 4590 3310 2970 1090 2220 0528 1720 0277 1100 0091 076 0036 0439 0009

900 3150 1220 2350 0585 1820 0308 1160 0100 0804 0041 0465 001

950 3320 1350 248 0649 1930 0342 1230 0111 0849 0045 0491 0012

1000 3500 1500 261 0714 2030 0377 1290 0122 0894 0049 0516 0013

1100 3850 1750 2870 0860 2230 0452 1420 0147 0983 0059 0568 0015

1200 4200 2140 3140 1020 2430 0534 1550 0172 1070 0069 0620 0018

1300 3400 1190 2640 0627 1680 0200 1160 008 0671 0021

1400 3660 1370 2840 0722 1810 0232 1250 0091 0723 0024

1500 3920 1560 3040 0818 1940 0264 1340 0105 0775 0027

1600 4180 1780 3240 0924 2070 0297 1430 0118 0826 0031

1700 10rdquo 4440 1990 3450 1040 2190 0331 1520 0132 0878 0035

1800 0590 0012 3650 1160 2320 0369 1610 0147 0930 0039

1900 0622 0014 3850 1280 2450 041 1700 0163 0981 0042

2000 0655 0015 40500 1410 2580 0452 1790 0181 1030 0046

2200 0721 0018 4460 1700 2840 0545 1970 0217 1140 0056

2400 0786 0021 12rdquo 3100 0645 2140 0253 1240 0065

2600 0852 0025 0600 001 3360 0749 2320 0296 1340 0076

2800 0917 0028 0646 0012 14rdquo 3610 0859 2500 0339 1450 0087

3000 0983 0032 0692 0013 0573 0008 3870 0982 268 0387 1550 0099

3500 1150 0043 0810 0018 0668 0011 4520 1330 3130 0526 1810 0134

4000 1310 0055 0923 0023 0764 0014 16rdquo 5160 1720 3570 0673 2070 0172

4500 1470 0068 1040 0029 0860 0018 0658 0009 4020 0853 2320 0214

5000 1640 0084 1150 0034 0955 0022 0731 0011 4470 1040 2580 0262

6000 1960 0118 1380 0049 1150 0031 0877 0016 18rdquo 5360 1470 3100 0373

7000 2290 0158 1610 0065 1340 0042 1020 0021 0808 0012 6250 2000 3610 0499

8000 2620 0204 1840 0085 1530 0054 1170 0027 0924 0015 7150 2590 4130 065

9000 2950 0256 2080 0107 1720 0067 1310 0033 1040 0019 4650 0816

10000 3280 0313 2310 0130 1910 0081 1460 0041 1150 0023 5160 0992

Q V Y V P V Y V Y V Y V Y V Y V Y [lm] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m]

PIPI

NG

78 wwwpnr-nozzlescom CTG SH 07 EU

10 75 12 038 4 11 50

15 80 12 044 4 11 55

20 90 14 065 4 11 65

25 100 14 082 4 11 75

32 120 14 117 4 14 90

40 130 14 139 4 14 100

50 140 14 162 4 14 110

65 160 14 214 4 14 130

80 190 16 343 4 18 150

100 210 16 422 4 18 170

125 240 18 611 8 18 200

150 265 18 751 8 18 225

175 295 20 1020 8 18 255

200 320 20 1230 8 18 280

250 375 22 1850 12 18 335

300 440 22 2550 12 22 395

350 490 22 3180 12 22 445

400 540 22 3850 16 22 495

450 595 22 4700 16 22 550

500 645 24 6040 20 22 600

PN 6 (UNI 6091)

ND 6 (DIN 2527) DN Flange Holes

D t W N Oslash a

90 14 063 4 14 60

95 14 071 4 14 65

105 16 101 4 14 75

115 16 122 4 14 85

140 16 180 4 18 100

150 16 209 4 18 110

165 18 287 4 18 125

185 18 365 4 18 145

200 20 461 8 18 160

220 20 565 8 18 180

250 22 812 8 18 210

285 22 1050 8 22 240

315 24 1410 8 22 270

340 24 1620 12 22 295

405 28 2510 12 25 355

460 28 3520 12 25 410

520 30 4820 16 25 470

580 32 6350 16 30 525

640 32 7720 20 30 585

715 34 1020 20 33 650

PN 16 (UNI 6093)

ND 16 (DIN 2527) Dimensions Holes

D t W N Oslash a

ND 10 (DIN 2527) Dimensions Holes

D t W N Oslash a

90 14 063 4 14 60

95 14 071 4 14 65

105 16 101 4 14 75

115 16 122 4 14 85

140 16 180 4 18 100

150 16 209 4 18 110

165 18 287 4 18 125

185 18 365 4 18 145

200 20 461 4 18 160

220 20 565 8 18 180

250 22 812 8 18 210

285 22 1050 8 22 240

315 24 1410 8 22 270

340 24 1650 8 22 295

395 26 2410 12 22 350

445 26 3080 12 22 400

505 26 3960 16 22 460

565 26 4960 16 25 515

615 26 5860 20 25 565

670 28 7530 20 25 620

PN 10 (UNI 6092)

LegendaDN Nominal DiameterD Flange External Diametert Flange ThicknessW Flange WeightN Hole NumberOslash Hole Diametera Hole axis

PIPING Flange dimensionsPI

PIN

G

Blind flanges to DIN 2527

79wwwpnr-nozzlescomCTG SH 07 EU

LegendDN Nominal DiameterD Flange External Diametert Flange ThicknessW Flange WeightN Hole NumberOslash Hole Diametera Hole axis

12rsquorsquo 889 111 08 4 159 603

34rsquorsquo 984 127 09 6 159 698

1rsquorsquo 1079 143 10 4 159 794

114rsquorsquo 1175 159 13 4 159 889

112rsquorsquo 1270 175 14 4 159 984

2rsquorsquo 1524 190 18 4 190 1206

212rsquorsquo 1778 222 32 4 190 1397

3rsquorsquo 1905 238 41 4 190 1524

312rsquorsquo 2159 238 59 8 190 1778

4rsquorsquo 2286 238 77 8 190 1905

5rsquorsquo 2540 238 91 8 222 2159

6rsquorsquo 2794 254 118 8 222 2413

8rsquorsquo 3429 286 204 8 222 2984

10rsquorsquo 4064 302 318 12 254 3619

12rsquorsquo 4826 317 500 12 254 4318

14rsquorsquo 5334 349 600 12 286 4762

16rsquorsquo 5969 365 770 16 286 5397

18rsquorsquo 6350 397 950 16 317 5778

20rsquorsquo 6985 429 1230 20 317 6350

22rsquorsquo 7493 460 1510 20 349 6921

ANSI 150 lb DN Flange Holes

D t W N Oslash a

952 143 10 4 159 667

1175 159 14 4 190 825

1238 175 18 4 190 889

1333 206 27 4 190 984

1556 222 36 4 222 1143

1651 254 45 8 190 1270

190S 286 68 8 222 1492

209S 317 91 8 222 1683

2286 349 132 8 254 1841

2540 349 150 8 254 2000

2794 381 200 8 254 2349

3175 413 277 12 254 2699

3810 476 450 12 286 3302

4445 540 700 16 317 3873

5207 571 103 16 349 4508

5842 603 141 20 349 5143

6477 635 181 20 381 5715

7112 667 228 24 381 6286

7747 698 282 24 413 6858

8382 730 311 24 444 7429

ANSI 400 lb Dimensions Holes

D t W N Oslash a

ANSI 300 lb Dimensions Holes

D t W N Oslash a

952 143 10 4 159 667

1175 159 14 4 190 825

1238 175 18 4 190 889

1333 190 27 4 190 984

1556 206 32 4 220 1143

1651 222 36 8 190 1270

1905 254 54 8 222 1492

2095 286 73 8 222 1683

2286 302 95 8 222 1841

2540 317 122 8 222 2000

2794 349 159 8 222 2349

3175 365 227 12 222 2699

3810 413 370 12 254 3302

4445 476 580 16 286 3873

5207 508 840 16 317 4508

5842 540 1070 20 317 5143

6477 571 1390 20 349 5715

7112 603 3900 24 349 6286

7747 635 2230 24 349 6858

8382 667 2700 24 413 7429

PIPING Flange dimensions

PIPI

NG

flanges to ANSI norms

80 wwwpnr-nozzlescom CTG SH 07 EU

PIPI

NG

Sieves are used both for determining the particle size distribution of a granular material and to filter solid particles in a liquid Normally the sieve is made with a fabric whose characteristic dimensions areL is the Opening Width (free passage)D is the Diameter of the wireP is the Pitch of the wireS is the Thickness of the fabricTo classify particle sizes there is some Sieve Series according to specific standardsthe most known are Tyler Sieve Series US Sieve Series UK Sieve SerieshellipThe Tyler mesh size indicates exactly the number of openings per linear inch of mesh

L[microm]

TYLER Sieve[Mesh No]

ASTM E11 Sieve[Mesh No]

BS 410 Sieve[Mesh No]

DIN 4188 Sieve[mm]

5 2500 2500 0005

10 1250 1250 0010

15 800 800 0015

20 625 635 625 0020

22 0022

25 500 500 500 0025

28 0028

32 na 450 440 0032

36 0036

38 400 400 400

40 0040

45 325 325 350 0045

50 0050

53 270 270 300

56 0056

63 250 230 240 0063

71 0071

75 200 200 200

80 0080

90 170 170 170 0090

100 0100

106 150 140 150

112 0112

125 115 120 120 0125

140 0140

150 100 100 100

160 0160

180 80 80 85 0180

200 0200

In the german standard (DIN norm 4188) the Opening Width (L) is given in millimeters

PIPING Sieve size conversion chartPI

PIN

G

81wwwpnr-nozzlescomCTG SH 07 EU

L[microm]

TYLER Sieve[Mesh No]

ASTM E11 Sieve[Mesh No]

BS 410 Sieve[Mesh No]

DIN 4188 Sieve[mm]

212 65 70 72

250 60 60 60 0250

280 0280

300 48 50 52

315 0315

355 42 45 44 0355

400 0400

425 35 40 36

450 0450

500 32 35 30 0500

560 0560

600 28 30 25

630 0630

710 24 25 22 0710

800 0800

850 20 20 18

900 0900

1000 16 18 16 1000

1120 1120

1180 14 16 14

1250 1250

1400 12 14 12 1400

1600 1600

1700 10 12 10

1800 1800

2000 9 10 8 2000

2240 2240

2360 8 8 7

2500 2500

2800 7 7 6 2800

3150 3150

3350 6 6 5

3550 3550

4000 5 5 4 4000

4500 4500

4750 4 4 35

5000 5000

5600 35 35 3

6700 3 0265 in 1

8000 25 516 in na

Applicable standards areISO 565 (1987) ISO 3310 (1999) ASTM E 11-70 (1995)DIN 4188 (1977) BS 410 (1986) AFNOR NFX11-501 (1987)

Legend Q Water Flow Rate V Velocity P Pressure drop Pressure drop in bar per 100 meters of straight pipe (water at ambient temperature)

PIPING Sieve size conversion chart

PIPI

NG

Besides its main range of nozzles for industrial applications PNR manufactures a wide range of complementary products and systems to optimize the use of spray jets and fluids control in most of the modern industrial processes

PNR PRODUCT RANGE

CTG AC

CTG LS

CTG UG

CTG AZ

Complementary Products andAssembly FittingsA complete line of nipples clamps swivel joints and everything that helps you to assemble align and service your spraying systems quickly and easilyAir blowers mixing eductors filters clean-ing guns and lances hose reels steam heaters pressure tanks quick couplings to help you build up a professional system upgraded to the latest standards

Tank washing systemsA complete range from simple fixed washing heads to the two-axis heads from mushroom nozzles to fluid driven reaction heads up to the motor driven washing heads equipped with a pneu-matic or electric motorAll for the inside cleaning of industrial tanks according to the latest technology accessories included

Spray nozzles for industrial applicationsOne of the world most complete lines of nozzles for numberless industrial appli-cations Nozzles with a wide openings range various types of vanes several spray patterns anti-clog design available in small and big dimensions and made in many food-grade materials like PFTE and Stainless Steel 316L with threaded and flanged connections

Air assisted atomizersUltrasonic classic and automatic atomiz-ers for the finest atomization in any insus-trial process High quality machining and strict quality control ensure your systems top professional resultsProgramming and control panels for an easy assembly of complete humidification systems

CTG SP

CTG PM

CTG SW

CTG LN

Spraydry nozzlesAir assisted or hydraulic high pressure ato-mizers made in high-quality metal alloys or tungsten carbideA complete line of nozzles for the moder-nization of existing facilities at competitive prices To ensure highly accurate results and a long service life these nozzles are manufactured with the finest materials and technologically advanced machines

Paper mill productsA line of products specifically designed for perfect results on paper mill machines including disc nozzles patented for self-cleaning filters flat jet nozzles with orifices in sapphire ruby and ceramic oscillating tubes equipped with a computer driven motor

Steelwork nozzlesA complete line of nozzles for steelwork applications including continuous casting air atomizers and conventional nozzles descaling nozzles for high pressure sys-tems dovetail tips for cylinders cooling and high capacity flanged nozzles for coke quenching

Gas cooling lancesSpillback or air assited lances for gas coo-ling in steelworks cement plants and other industrial applicationsWe can supply spare parts upgrade your plant and even supply a complete PLC driven system to enhance the towers per-formances to the highest efficiency level allowed by today technology

wwwpnr-nozzlescomCTG SH 07 EU

CTG SH 07 EUwwwpnr-nozzlescom

STAM

PATO

IN E

U 09

09

copy B

ellamp

Tany

Our products are distributed through

We are also represented in

PNR AmericaPNR Asia

PNR BalticPNR Benelux

PNR ChinaPNR Czech Republic

PNR DeutschlandPNR France

PNR ItaliaPNR Mexico

PNR UK

ArgentinaAustraliaAustriaBrazil

BulgariaCanada

ChileCroatia

DenmarkFinlandGreece

IndiaIndonesia

IranIrelandKorea

MalaysiaNorway

New ZealandPakistan

PhilippinesPoland

Portugal

RumeniaRussiaSerbia

SingaporeSlovenja

SpainSouth Africa

SwedenTaiwanTurkey

Venezuela

Page 2: SPRAY CTG SH 07 EU ENGINEERING HANDBOOK

TECHNICAL PUBLICATIONSPNR manufactures a complete range of spray nozzles for industrial applications and many other products and systems designed according to the latest cutting-edge technologies All our products are described in the following catalogues

PRODUCT RANGE CTG TV GENERAL PURPOSE SPRAY NOZZLES CTG UGAIR ASSISTED ATOMIZERS CTG AZCOMPLEMENTARY PRODUCTS AND ASSEMBLY FITTINGS CTG ACINDUSTRIAL TANK WASHING SYSTEMS CTG LSPAPER MILL PRODUCTS CTG PMEVAPORATIVE COOLING LANCES CTG LNSTEELWORK NOZZLES CTG SWSPRAYDRY NOZZLES CTG SDFIREFIGHTING PRODUCTS AND SISTEMS CTG FF

Our technical literature is continuously revised and updated and sent to our Customers who are listed in our Catalogues Delivery List If you are interested in receiving the latest version of our catalogues please contact the nearest PNR officeWAIVER OF RESPONSABILITYThe information contained herein is provided ldquoas isrdquo and PNR does not guarantee the correctness and accuracy of the sameThis publication may contain technical inaccuracies or typographical errors It may also be subject to periodic changes without prior notice

INDEXGENERAL INFORMATION

International system of units 4Prefix tables for SI units 5Conversion table American units to SI units 5Conversion tables temperature scales 6Metric and decimal equivalents of fractions of an inch 7

LIQUID SPRAY AND SPRAY NOZZLESLiquid spray 9Spray nozzle types 11Spray nozzle coding 13Computerized fluid dynamics 14Spray generation 15Droplet spectrum 16Nozzle flow rate 19Spray angle 21Spray distribution 23Influence of liquid viscosity 27Influence of liquid specific gravity 29Jet impact 30Pressure drop through a nozzle 32

NOZZLE MATERIALSPnr material codes 34Properties of materials 35Mechanical properties of materials 39Chemical resistance of materials 40

PIPINGPipes data 74Economic pipe sizes 75Pressure drop in clean steel pipes 76Flange dimensions 78Sieve size conversion chart 80

PNR PRODUCT RANGE

INDE

X

wwwpnr-nozzlescom CTG SH 07 EU

3wwwpnr-nozzlescomCTG SH 07 EU 3

Foreword

Along many years PNR engineers have been involved with Customers to find out the appropriate solution to specific application problems in numberless different industriesThis continuous cooperation has allowed us to gather a large quantity of information regarding practical spray nozzles applications which we make available every day to our CustomersWe like to thank alI our Customers for their past cooperation and for the invaluable help they have given us in designing and manufacturing an always more complete and efficient range of spray nozzles and spraying systemsTo make this information readily available and improve our service we have now decided to gather and organize it within a manualWe hope the reader will appreciate our work and welcome any suggestion or addition which may lead to improve and complete this manual

GENERAL INFORMATIONInternational system of units 4Prefix tables for SI units 5Conversion table American units to SI units 5Conversion tables temperature scales 6Metric and decimal equivalents of fractions of an inch 7

GENERAL INFORMATION

INTR

ODUC

TION

GENE

RAL

INFO

RMAT

ION

3

4 wwwpnr-nozzlescom CTG SH 07 EU

Description

The INTERNATIONAL SYSTEM OF UNITS sometimes called SI has been defined by the International Standards Organization (ISO) and is based upon metric units The following notes include most units which are likely to be used in handing of fluids The system consists of nine base units and supplementary units which are coherently derived from them The coherence con-sists in the fact that the product or the quotient of any two unit quantities in the system result in another unit quantity Because of the world wide trend to use this modern metric system we are providing in the following the conversion constants for the most useful units

Base Units and derived units

The SI has defined the following base unit

GENE

RAL

INFO

RMAT

ION

Ndeg QUANTITY UNIT NAME UNIT SYMBOL

1 Length meter m

2 Mass kilogram kg

3 Time second s

4 Thermodynamic temperature Kelvin K

5 Molecular substance mole mol

6 Electric current Ampere A

7 Light intensity candela cd

8 Plane angle radiante rad

9 Solid angle steradian sr

Out of these base units many other have been derived the most interesting for our purposes being listed below

Ndeg QUANTITY UNIT NAME UNIT SYMBOL EQUIVALENCES

10 Area square meter m2

11 Volume cubic meter m3

12 Density kilogram per cubic meter Kgm3

13 Velocity meter per second ms

14 Acceleration meter per second squared ms2

15 Angular velocity radian per second rad s

16 Frequency Hertz Hz Hz = cicli s

17 Force Newton N N = kg ms2

18 Pressure Pascal Pa Pa = Nm2

19 Momentum kilogram meter per second Kg ms

20 Energy Joule J J = N m

21 Power Watt W W = Js

22 Moment of force Newton meter N m

23 Kinematic viscosity square meter per second m2s

24 Dynamic Viscosity Pascal second Pa s

25 Thermal conductivity Watt per meter Kelvin W (m K)

GENERAL INFORMATION International system of units

5wwwpnr-nozzlescomCTG SH 07 EU

GENE

RAL

INFO

RMAT

ION

AMERICAN UNIT CONVERSION FACTOR SI UNITPound masscubic feet 16018 kilogramscubic meterGallons per minute 3785 liters per minute (lpm)US Gallon 3785 liter (I)Pound force 4448 Newton (N)BTU (British Thermal Unit) 1055 Joule (J)BTU per hour 02931 Watt (W)BTU per pounddeg F 4184 Joule (kg K)mil 254 Micrometer (micron)Inches 254 millimeters (mm)Foot 03048 meter (m)Horsepower 0746 kilowatt (kW)Pounds per square inch 00689 bar (1 bar = 100 kPa)BTU per pound 2326 Joule per kgLbs per gallon 01198 kg per liter (kgl)Square inch 64516 square centimeter (cm2)Square foot 00929 square meter (m2)Acre 04047 hectares (ha)Foot per second 03048 meters per second (msec)Foot per minute 03048 meters per minute (mmin)Miles per hours 1609 kilometers per hour (kmh)Knots 1852 kilometers per hour (kmh)Cubic foot 00283 cubic meter (m3)Cubic inch 16387 cubic centimeter (cm3)Pound 04536 kilogram (kg)Ton 090272 metric ton (t)

QUANTITYDENSITYFLOW RATEFLUID VOLUMEFORCEHEATHEAT TRANSFERSPECIFIC HEAT CAPACITYLENGTHLENGTHLENGTHPOWERPRESSURECALORIC VALUE ENTALPYSPECIFIC WEIGHTSURFACESURFACESURFACEVELOCITYVELOCITYVELOCITYVELOCITYVOLUMEVOLUMEWEIGHTWEIGHT

Multiply American Units on the left (by the conversion factor) to obtain SI Units on the right Divide SI Units on the right (by the conversion factor) to obtain American Units on the left

GENERAL INFORMATION Prefix tables for SI units

Prefixes

SI units can be indicated together with a prefix to easily indicate very large or very small numbersAs an example visible light has a wave length of approximately 00000005 m (meters) which can be more easily written as 500 nm (nanometers)Please note it is not allowed to use prefixes together you cannot write 10000 m = 1da-km

10n Prefix Symbol Denomination Decimal equivalent1024 yotta Y 1 000 000 000 000 000 000 000 0001021 zetta Z 1 000 000 000 000 000 000 0001018 exa E 1 000 000 000 000 000 0001015 peta P 1 000 000 000 000 0001012 tera T 1 000 000 000 000109 giga G 1 000 000 000106 mega M Million 1 000 000103 kilo k Thousand 1 000102 etto h Hundred 10010 deca da Ten 1010minus1 deci d Tenth 0110minus2 centi c Hundredth 00110minus3 milli m Thousandth 000110minus6 micro micro Millionth 0000 00110minus9 nano n 0000 000 00110minus12 pico p 0000 000 000 00110minus15 femto f 0000 000 000 000 00110minus18 atto a 0000 000 000 000 000 00110minus21 zepto z 0000 000 000 000 000 000 00110minus24 yocto y 0000 000 000 000 000 000 000 001

GENERAL INFORMATION Conversion table American units to Si units

NoteBecause of discrepancies between some denominations in English and American we only mention the commonly used deno-minations

6 wwwpnr-nozzlescom CTG SH 07 EU

There are 4 principal types of temperature scales used for indicate the temperature CENTIGRADE CELSIUS FAHRENHEIT KELVIN and RANKINE Kelvin and Celsius scales are used in Europe Rankine Fahrenheit are used in Anglo-Saxons countries

MP = water melting pointBP = water boiling point

GENE

RAL

INFO

RMAT

ION SYMBOL NAME MP BP NOTES

degC Centigrade 0 100 0 and 100 are arbitrarily placed at the freezing point andboiling point of water

degF Fahrenheit 32 212

0degF is the stabilized temperature when equal amounts ofice water and salt are mixed 96degF is the temperatureldquowhen the thermometer is held in the mouth or under thearmpit of a living man in good healthrdquo

degK Kelvin 27316 37316Based upon the definitions of the Centigrade scale and theexperimental evidence that absolute zero is ndash27316deg Cand that is an international standard temperature point

degR Rankine 49167 67167 Based upon the definitions of the Fahrenheit scale andthe experimental evidence that absolute zero is ndash27316deg C

degC degF43 1094

44 1112

45 113

46 1148

47 1166

48 1184

49 1202

50 122

51 1238

52 1256

53 1274

54 1292

55 131

56 1328

57 1346

58 1364

59 1382

60 140

61 1418

62 1436

63 1454

64 1472

65 149

66 1508

degC degF67 1526

68 1544

69 1562

70 158

71 1598

72 1616

73 1634

74 1652

75 167

76 1688

77 1706

78 1724

79 1742

80 176

81 1778

82 1796

83 1814

84 1832

85 185

86 1868

87 1886

88 1904

89 1922

90 194

degC degF91 1958

92 1976

93 1994

94 2012

95 203

96 2048

97 2066

98 2084

99 2102

100 212

105 221

110 230

115 239

120 248

125 257

130 266

135 275

140 284

145 293

150 302

160 320

170 338

180 356

190 374

degC degF19 662

20 68

21 698

22 716

23 734

24 752

25 77

26 788

27 806

28 824

29 842

30 86

31 878

32 896

33 914

34 932

35 95

36 968

37 986

38 1004

39 1022

40 104

41 1058

42 1076

degC degF-10 14

-8 176

-6 212

-4 248

-2 284

0 32

1 338

2 356

3 374

4 392

5 41

6 428

7 446

8 464

9 482

10 50

11 518

12 536

13 554

14 572

15 59

16 608

17 626

18 644

CONVERSION FORMULAE TABLE

CELSIUS FAHRENHEIT KELVIN RANKINE

degC= -

degF - 32 K - 27316

R - 27316

18 18

degF= 18 degC + 32 18K - 45969 R - 45969

K= degC + 27316

degF - 32 + 27316

- R

18 18

degR= 18 (degC + 27316) degF + 45967 18K -

GENERAL INFORMATION Conversion table temperature scales

7wwwpnr-nozzlescomCTG SH 07 EU

GENE

RAL

INFO

RMAT

ION

GENERAL INFORMATION Metric and decimal equivalents of fractions of an inch

5wwwpnr-nozzlescom

METRIC AND DECIMAL EQUIVALENTS OF FRACTIONS OF ONE INCH

mm FRACTIONS OF ONE INCH INCHES

03969 164 0015625079375 132 00312511906 364 00468715875 116 00625 19844 564 0078125238125 332 009375 27781 764 0109375 31750 18 012535719 964 014062396875 532 01562543656 1164 017187547625 316 1364 0187551594 0203125555625 732 02187559531 1564 023437563500 14 02567469 1764 0265625 714375 932 02812575406 1964 029687 79375 516 0312583344 2164 0328125873125 1132 03437591281 2364 035937595250 38 037599219 2564 0390625

1031875 1332 040625107156 2764 042187111125 716 04375115094 2964 04531251190625 1532 046875123031 3164 0484375127000 12 05130969 3364 05156251349375 1732 053125138906 3564 054687142875 916 05625146844 3764 05781251508125 1932 059375154781 3964 0609375 158750 58 0625 162719 4164 064062 1666875 2132 065625 170656 4364 0671875 174625 1116 06875 178594 4564 0703125 1825625 2332 071875 186531 4764 0734375 190500 34 075194469 4964 07656251984375 2532 078125202406 5164 0796875206375 1316 08125210344 5364 08281252143125 2732 084375218280 5564 085937222250 78 0875226219 5764 08906252301875 2932 090625 234156 5964 0921875238125 1516 09375242094 6164 09531252460625 3132 096875250031 6364 0984375254000 1 10

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METRIC AND DECIMAL EQUIVALENTS OF FRACTIONS OF ONE INCH

mm FRACTIONS OF ONE INCH INCHES

03969 164 0015625079375 132 00312511906 364 00468715875 116 00625 19844 564 0078125238125 332 009375 27781 764 0109375 31750 18 012535719 964 014062396875 532 01562543656 1164 017187547625 316 1364 0187551594 0203125555625 732 02187559531 1564 023437563500 14 02567469 1764 0265625 714375 932 02812575406 1964 029687 79375 516 0312583344 2164 0328125873125 1132 03437591281 2364 035937595250 38 037599219 2564 0390625

1031875 1332 040625107156 2764 042187111125 716 04375115094 2964 04531251190625 1532 046875123031 3164 0484375127000 12 05130969 3364 05156251349375 1732 053125138906 3564 054687142875 916 05625146844 3764 05781251508125 1932 059375154781 3964 0609375 158750 58 0625 162719 4164 064062 1666875 2132 065625 170656 4364 0671875 174625 1116 06875 178594 4564 0703125 1825625 2332 071875 186531 4764 0734375 190500 34 075194469 4964 07656251984375 2532 078125202406 5164 0796875206375 1316 08125210344 5364 08281252143125 2732 084375218280 5564 085937222250 78 0875226219 5764 08906252301875 2932 090625 234156 5964 0921875238125 1516 09375242094 6164 09531252460625 3132 096875250031 6364 0984375254000 1 10

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METRIC AND DECIMAL EQUIVALENTS OF FRACTIONS OF ONE INCH

mm FRACTIONS OF ONE INCH INCHES

03969 164 0015625079375 132 00312511906 364 00468715875 116 00625 19844 564 0078125238125 332 009375 27781 764 0109375 31750 18 012535719 964 014062396875 532 01562543656 1164 017187547625 316 1364 0187551594 0203125555625 732 02187559531 1564 023437563500 14 02567469 1764 0265625 714375 932 02812575406 1964 029687 79375 516 0312583344 2164 0328125873125 1132 03437591281 2364 035937595250 38 037599219 2564 0390625

1031875 1332 040625107156 2764 042187111125 716 04375115094 2964 04531251190625 1532 046875123031 3164 0484375127000 12 05130969 3364 05156251349375 1732 053125138906 3564 054687142875 916 05625146844 3764 05781251508125 1932 059375154781 3964 0609375 158750 58 0625 162719 4164 064062 1666875 2132 065625 170656 4364 0671875 174625 1116 06875 178594 4564 0703125 1825625 2332 071875 186531 4764 0734375 190500 34 075194469 4964 07656251984375 2532 078125202406 5164 0796875206375 1316 08125210344 5364 08281252143125 2732 084375218280 5564 085937222250 78 0875226219 5764 08906252301875 2932 090625 234156 5964 0921875238125 1516 09375242094 6164 09531252460625 3132 096875250031 6364 0984375254000 1 10

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LIQUID SPRAY AND SPRAY NOZZLESLiquid spray 9Spray nozzle types 11Spray nozzle coding 13Computerized fluid dynamics 14Spray generation 15Droplet spectrum 16Nozzle flow rate 19Spray angle 21Spray distribution 23Influence of liquid viscosity 27Influence of liquid specific gravity 29Jet impact 30Pressure drop through a nozzle 32

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A nozzle is a device which converts the energy from a fluid into velocity of the spray dropletsApplications in many industrial processes are numberless with spray nozzles being very often a critical component in determining the final quality of the product or the efficiency of the processFor this reason the available nozzle range types for industrial applications can be found in PNR nozzle catalogue as well as a concise but complete information about the most important parameters which can give a technical definition of a spray and its qualityWe have grouped in the following the most useful formulas for designing a spray system showing the influence of the different factors which can affect the process of sprayingMore information about the working life of a nozzle and the best suited material for a given purpose can be found at page 17 of this publication AlI the following data when not otherwise specified refer to spraying water at 15deg C

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LIQUID SPRAY AND SPRAY NOZZLES Liquid spray

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LIQUID SPRAY AS A PROCESS

The process of spraying a liquid can be described as composed of two phases namely

1 Breaking up the liquid into separated drops2 Directing the liquid drops onto a surface or an object to achieve the desired result

The above two phases are normally performed by the types of nozzles being used in industrial processes at the same time by means of different techniques which shall be illustrated in the followingThe continuous progress in the manufacturing techniques in recent years has requested the nozzle manufacturer to make available to the industry an always more complete range of spray nozzle types to perform the different processes in a more efficient wayIt is the interest of the engineer using spray nozzles in manufacturing processes to become familiar with the different types of nozzles which are available today and with their individual characteristics in order to be able to choose the nozzle which performs with the highest possible efficiency on a given application

Spraying a liquid through a spray nozzle can serve different purposes among which the most important are the following

1 Cooling by means of heat transfer between the product itself and the liquid running on its surface2 Washing where the water directed onto the product takes away dirt or undesired substances from the product surface3 Humidifying with sprays carrying very little liquid quantities to the product surfaceinto a chamber or into a room4 Metering the desired liquid quantity in a unit of time into the product being handled5 Applying a product on a surface as in the case of spray painting or surface pre-treatment before painting6 Increasing the liquid surface to speed up heat transfer processes or chemical reactions and many others in numerous applications throughout modern industry

It is self evident that the best results for every application are only obtained when the right choices in terms of nozzle type flow value spray angle drop dimensions and nozzle material are madeThe purpose of the following pages is to give the reader the basic knowledge which is needed to properly select a spray nozzle for a given application

Spray nozzles

a spray nozzle is a device which makes use of the pressure energy of a liquid to increase its speed through an orifice and break it into dropsIts performances can be identified and described precisely so that the design engineer can specify exactly the spray nozzle required for a given process

The relevant characteristics which identify the performances of a nozzle are the following

1 The liquid flow delivered as a function of the nozzle feed pressure2 The opening angle of the produced spray3 The nozzle efficiency as the ratio between the energy of the spray and the energy used by the nozzle4 The evenness of the flow distribution over the target5 The droplet size distribution of the spray6 The jet impact of the spray

The above characteristics will be discussed in the following pages in connection with the different nozzle types

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TECHNIQUES FOR SPRAY PRODUCTION

Many different techniques can be used to produce a spray and most of them are used today for nozzles to be applied in industrial processes Based on the different techniques the following nozzle types can be used in industrial applications to generate a liquid spray

1 Pressure nozzlesThis is the simplest type of nozzles where an orifice is opened into a chamber where the liquid to be sprayed is fed under pressure A spray is produced through the orifice with spray pattern flow rate and spray angle depending upon the orifice edge profile and the design of the inside pressure chamberTypical pressure nozzles are the flat jet nozzles series GA J GX and GY

2 Turbulence nozzlesIn these nozzles the liquid moving towards the chamber preceding the orifice is given a rotational speed component so as to open up in a conical shape as soon as it leaves the orifice edge because of centrifugal force Based on the nozzle design and the technique used to generate the rotational speed the drops produced can be confined to the cone outer surface (hollow cone spray) or be evenly distributed to fill the entire volume of the cone (full cone spray)

3 Impact nozzlesHere the desired spray shape is obtained producing an impact of the liquid jet onto a properly designed surface The liquid jet is subsequently changed into a fluid lamina and then broken into drops with the desired spray pattern after leaving the nozzle edge

4 Air assisted atomizersFine and very fine sprays can be obtained by means of air assisted atomizers working upon various different principles More detailed information about air assisted atomizing can be found in our Catalogue Air assisted atomizers (ordering code CTG AZ18)

LIQUID SPRAY AND SPRAY NOZZLES Liquid spray

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FULL CONE PATTERN

In a full cone spray the droplets are distributed into a volume which is limited by a cone having its origin point at the nozzle orifice Such spray pattern is commonly used in a large variety of industrial processes since it is the one which allows to distribute in an even way the water flow onto a surface the full cone spray pattern is therefore useful as a typical example to evenly spray cooling liquid on a still surface Another typical use is to distribute liquid droplets within a certain volume like for example evenly distributing water droplets in the inside volume of a cooling tower

Because of the wide number of processes performed by means of full cone nozzles the original shape has evolved into a range of specialised types where the full cone spray pattern or a pattern similar to a full cone one is obtained by different techniques

Standard full cone (turbulence nozzle)These nozzles use a specially shaped vane placed at the nozzle inlet to give a rotational speed to the fluid flowing through the nozzleBecause of the rotational speed of the fluid water exiting the nozzle orifice is subjected to centrifu-gal force and opens up in the shape of a full coneThe extent of the angle of the cone is a function of both exit speed (created from the inlet pressure) and the internal design of the nozzle It can vary in practice from 15deg to 120deg

These nozzles can be also produced as square full cone nozzles where the square shape of the pyramidal spray is obtained by a special design of the outlet orificeTwo important details have to be noted from the system designer when using these type of noz-zles

the spray angle is measured on the side of the square sectionbullthe square section of the spray rotates within the distance from the nozzle orifice to the bulltarget area

Spiral full cone (deflection nozzle)This is not properly a full cone but rather a continuous liquid curtain evolving with the shape of a spiral inside a conical volume The disadvantage of a scarcely even distribution is compensated by an exceptionally good resistance to plugging which makes this nozzle the best choice in those applications where safety or system reliability are the prime concern eg fire fighting systems

Multiple full cone (turbulence nozzle air atomizer)This spray pattern is used in two cases that is

1 When a wide spray angle is to be reached with nozzles which inherently can only produce a narrow one or in such cases where small size droplets and rather high capacities are required Therefore several nozzles are grouped in a cluster with different spray directions the resulting spray pattern occurs from the additional group of single nozzle sprays and the droplet size of the spray remains the same as one of single nozzle It must be noted that a smaller nozzle will normally make smaller drops as compared to a larger size nozzle of the same type operating under the same conditions

2 When it is necessary to obtain a wide angle jet using nozzles which inherently deliver a lim-ited angle spray In the case of a wide angle air atomizer for example the droplet distribution is obviously not homogeneous and the result is rather a number of small angle sprays with different directions but still the liquid is atomized towards all the parts of the volume to be treated

LIQUID SPRAY AND SPRAY NOZZLES Spray nozzle types

Standard full cone

Spiral full cone

Multiple full cone

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FLAT JET SPRAY PATTERN

In a flat jet spray the liquid droplets are sprayed in the shape of a flat liquid layer with different thickness according to the principle used to generate the spray A flat jet spray nozzle serves the purpose of spraying onto a surface or an object moving in a transverse direction with respect to the one of the jet surface a typical example being the nozzles in a car washing tunnel The vast majority of flat spray nozzles used in the industry work according to one of the following principles

In line flat jet (pressure nozzle)This is the general purpose flat jet nozzle where the liquid enters the nozzle in line with the axis length and is fed to a pressure chamber from where it is ejected through the nozzle orifice Flow value and spray angle are determined respectively from the orifice cross section and the orifice edge profile

In line straight jet (pressure nozzle)These nozzles can be considered a special kind of flat jet nozzle with naught degree spray angle They are designed to produce a sharp stable stream with powerful impact on a given point and serve normally to perform cleaning processes or to cut soft materials

Spoon flat jet (deflection nozzle)In this type of nozzle the liquid is fed under pressure to a round outlet orifice and then deflected onto a smooth profiled surface so as to assume a flat jet shape This sophisticated design is of advantage since it offers a stronger jet impact using the same feed pressureHigher efficiency comes from the very little energy required to just change the direction of the liquid flow this being the only energy required to generate the flat jet

HOLLOW CONE SPRAY PATTERN

A hollow cone spray pattern consists of droplets concentrated onto the outer surface of a conical shape volume with no droplets contained in the inside of the conical jet shape These nozzles are normally used for smoke washing or gas cooling applications in several industrial processes

Hollow cone (turbulence nozzle)These nozzles use a tangential injection of liquid into a whirling chamber to generate centrifugal forces which break up the liquid vein as soon as it leaves the orifice Precisely designed orifice profiles making use of the Coanda effect provides the ability to obtain very large spray angles

Hollow cone (deflection nozzle)A hollow cone can also be obtained taking a liquid flow to change direction onto a properly designed surface in order to break the liquid into droplets and distributing them as a hollow cone spray patternThis kind of nozzle is mainly used for applications in dust control and fire fighting systems

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PNR CODING SYSTEM

As any other industrial product spray nozzles need to be precisely identified by means of a code in order to avoid mistakesPNR coding system has been designed with the following requirements in mind

Codes must be easily processed by a computer in ascending orderbullCodes must describe completely the product without any need for additional descriptionbullCodes must show to the user the basic specifications of the nozzle in order to ease the search in the cataloguebull

We have therefore determined our coding system described as follows

LIQUID SPRAY AND SPRAY NOZZLES Spray nozzle coding

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AA U X YB312 305

Thread type or other connection

Special features

Nozzle material code (see below)

The three digits give the nozzle capacity in lpm at 3 bar according to rank value

Rank of flow value see table below

Nozzle spray angle see table below

Nozzle type as described in the catalogue pages shown in ascending order

Nozzle tables report on a blue background the nominal flow value measured at 30 barFlow values at different pressures have been calculated

These codes serve as an indication onlyBased on different types of nozzles their significance can occasionally be different

CAPACITY RANK

Rank Flow digits Actual flow (lmin)

0 0 490 049

1 1 490 490

2 2 490 490

3 3 490 490

4 4 490 4900

SOME SPRAY ANGLE CODES (DEGREES)

A = 0 L = 40 T = 80

B = 15 M = 45 U = 90

C = 20 N = 50 J = 110

D = 25 Q = 60 W = 120

F = 30 R = 65 Y = 130

H = 35 S = 75 Z = 180

A1 Carbon steel D6 Glassfibre reinforced PP L2 Incolloy 825

A2 High speed steel D7 High density polyethilene L8 Hastelloy C276

A8 Zinc coated steel D8 Polyvinylidenefluoride (PVDF) P6 Acr But Styrene (ABS)

A9 Nickel coated steel E0 EPDM P8 EPDM 40 Shore

B1 AISI 303 Stainless steel E1 Polytetrafluorethylene (PTFE) T1 Brass

B2 AISI 304 Stainless steel E2 PTFE (25 glassfibers) T2 Brass chrome plated

B21 AISI 304 L Stainless steel E31 Acetalic resin (POM) T3 Copper

B3 AISI 316 Stainless steel E7 Viton T5 Bronze

B31 AISI 316 L Stainless steel E8 Synthetic rubber (NBR) T8 Brass nickel plated

C2 AISI 416 Stainless steel hardened F5 Ceramic T81 Brass electroless nickel plated

D1 Polyvinylchloride (PVC) F31 Ruby insert 303 body V1 Aluminum

D2 Polypropylene (PP) G1 Cast iron V7 Aluminum electroless n plated

d3 Polyamide (PA) H1 Titanium

D5 Talcum filled Polypropylene L1 Monel 400

NOZZLE MATERIAL CODES

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LIQUID SPRAY AND SPRAY NOZZLES Computerized fluid dynamics

The customers demand for an always higher efficiency requires to use not only the best tooling but in addition control instruments and design methods always more sophisticated like for example new software for obtaining the velocity distribution of a fluid flowing through a conduit

These software programs require that the geometry of the inner con-duit to be geometrically defined and in addition the process conditions ( pressure temperature fluid capacity ) and the fluid properties ( specific weight viscosity ) to be Introduced

Based on the above data it is pos-sible to obtain a very precise dis-tribution for the velocity value in each single point of the conduit both under numeric form and flow diagramsThese Information make it possi-ble as an example to minimize the flow turbulence and consequently to Increase the nozzle efficiency through an increase in the fluid exit velocityThis is of basic Importance for some kind of nozzles for example those nozzles required to supply an high impact jet when performing descal-ing processes in a rolling millBy trial and error it is also possible to eliminate problems like jet Instability or cavitation

The overall process efficiency in the flow path before the nozzle can also be considered which often results into the design of geometry modifi-cation or the Introduction of special flow improving profiles along the conduit

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The diagram on the right shows the idealization of the process generating the droplets while the water jet exiting the nozzle is breaking up The theoretical model whose exactitude seems to be confirmed by scientific research considers that the liquid flowing through the nozzle and past the orifice edge evolves into a liquid lamina This lamina because of instability induced by aerodynamic forces breaks up first into elongated ligaments more or less cylindrical and later into droplets

Taking the above process as a guideline one can easily appreciate that the average droplet diameter is some what related to several factors like

1 The thickness of the lamina itself2 The evenness of the lamina 3 A steady flow and break up process

For what has been said above and limited to hydraulic nozzles the system designer looking for fine droplet sprays should consider that the following results can be expected

Impact nozzles best

Centrifugal hollow cone nozzles multiple full cone nozzles good

Turbulence nozzles fair

Centrifugal Vaneless full cones worst

The above choice is obviously based on the droplet generation process which changes from one nozzle type to another and allows to forecast which type is best fro the applicationAn additional consideration of interest is that the expected droplet size changes for the same type of nozzle with the nozzle size it is possible to generate smaller drops spraying the same water quantity at the same pressure using a greater number of smaller nozzles

In cases where energy requirements are not a problem or where a specified small droplet diameter is required the smal-lest droplets can be obtained by means of an air assisted atomizerHere the shear action of a high speed compressed air flow is used with several different techniques to obtain a value for SMD (Sauter Mean Diameter) of 50 microns and less

LIQUID SPRAY AND SPRAY NOZZLES Spray generation

Theoretical Mechanism of droplet generation

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SLIQUID SPRAY AND SPRAY NOZZLES Droplet spectrum

The atomization of a liquid by means of a compressible fluid like air steam or a gas is defined pneumatic two-phase or twin-fluid atomization Many industrial processes require the availability of finely atomized droplets and the techniques to produce atomized jets have been largely improved in the recent years In addition more sophisticated process techniques have incre-ased the demand for a precise definition about the characteristics of the spray and are now available to the design engineer Since many years PNR can supply upon request complete documentation containing test reports about the more interesting and additional information which are described below for all PNR products

Laser Interpherometer Test (By Pdpa)

PNR droplet size test reports are performed by means of a Laser Interpherometer (Phase Doppler Particle Analyzer) where two laser beams cross in a given point of the spray and define a test probe area Droplet flying through the probe area cause a light scatter which is picked up by the instrument receiver and processed through a computer in order to obtain relevant information about the spray characteristics

Report information

Report information is made of data printed on three pages where the first page contains the most interesting data which make possible to base process calculations upon precise data about spraying degrees process efficiency and jet behavior in operational ambiance These pages contain the Sauter Mean Diameter value whose knowledge is of special importance in heat exchange calculations about evaporative gas cooling processes since it gives the possibility of evaluating the exchange surface obtained by atomizing for a given liquid volume

The upper picture at page 18 referring to atomizing water by means compressed air shows two following histograms

bull Distribution curve of droplet diameter (micron)

bull Distribution curve of droplet velocities (mps)

and the below described values

bull Arithmetic Mean Diameter (D10)

bull Surface Mean Diameter (D20)

bull Volume Mean Diameter (D30)

bull Sauter Mean Diameter (D32)

ARITHMETIC MEAN DIAMETERThis is a diameter value which multiplied by the local num-ber of droplets in the sample equals the addition of alI droplets diameters

SURFACE MEAN DIAMETERThis is the diameter of such a droplet whose surface mul-tiplied by the total droplets number equals the sum of alI droplets surfaces

VOLUME MEAN DIAMETERThis is the diameter of such a droplet whose volume mul-tiplied by the total droplets number equals the sum of all droplets volumes

SAUTER MEAN DIAMETERThis is the diameter of such a droplet whose volumearea ratio equals the ratio between the sum of alI droplet volu-mes divided by the sum of alI droplet surfaces

D10 = Σ i ni di

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AttemptsDroplet number crossing probe area during test time This includes both validated and not validated droplet

Correct Count Criteria A mathematic correction is applied to validate droplets which cross Probe Area in a peripheral belt or to droplets without a perfect spherical shape so that alI validated droplets parameters are homogeneous (This correction is necessary so that there is direct proportionally between laser beam phase and droplet number diameter)

Number Density It is the number of droplets passing through probe area within test time

Probe areaThis is the area where the two laser beams are crossing so determining the probe area AlI droplets intersecting probe area are checked droplets which respect given parameters for shape are taken as valid droplets and make up the sample whose size and velocity parameters are reported

ValidationsDroplets accepted based on given shape parameters to make up for test sample

Velocity MeanDroplets distribution speed histogram (ms)

Volume Flow RateIt is the volume measured in cubic centimeter per second of the validated droplets making up for the sample

Volume FluxIt is the flow rate per specific area measured in cubic centimeter per second and square centimeter of the validated droplets making up the sample

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LIQUID SPRAY AND SPRAY NOZZLES Droplet spectrum

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SLIQUID SPRAY AND SPRAY NOZZLES Droplet spectrum

PNR can supply upon request complete documentation con-taining test reports about the aforementioned parameters and additional information for all PNR atomizersThe diagrams beside show the distribution of droplet diameters and droplet velocities of a spray under test as available to our customers

In the photo beside a test being performed at our laboratoriesWe use a computer driven laser interpherometer to detect and record the spray parameters while fluid capacities and feed pressure values are monitored through high precision instru-ments

IMPORTANT NOTE

The droplet size values measured with a PDPA instrumentation are representative of a well specified volume inside the spray and taking measurements in a different volume they can be considerably differentA correct spray droplet size characterization requires then not only tests being performed in several volumes within the spray but also that those measure volumes are selected with regard to the process the droplets are expected to performAs an example the droplet characterization of a spray should define how many volumes have been tested and which are the coordinates of each single test volume in relation to the nozzle orifice

Most of the times pretending to describe the droplet spectrum of a spray nozzle at a given pressure with only one diagram is therefore not correct

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In order to calculate the discharge flow rate from a given nozzle the Bernoulli law shall be used which says that the energy of a liquid flow remains unchanged over alI the sections of the flow Friction and turbu-lence losses are neglected which is reasonable for our purposes if the cal-culation is performed over two sections not too far away from each other

The Bernoulli law can be written as follows

Therefore if we consider two sections of the same pipe section A and section B we can write that the flow energy remains constant in the form

If we finally consider that the two above sections are taken immediately before and immediately after the nozzle outlet orifice being

ZA = ZB PB = 0 (PA is a differential pressure referred at the atmosphere pressure)

VA cong 0 negligible as compared to VB (for orifice diameter much smaller than the duct diameter)

we shall come to the formula

When we define a new constant k to include the value of the nozzle orifice outlet area (A) then we come to the following equation which says that for a nozzle spraying into a room at ambient pressure the exiting flow is proportional to the feed line pressure

Considering now two different pressure values for the same nozzle since k is a constant quantity we can write that

and derive from the above an equation that makes it possible to calculate the nozzle flow value at any given pressure value once the flow value at another pressure value is known

The energy of a given liquid flow crossing a given pipe section is composed of three parts namely

P Pressure energy of liquid particle per volume unit

1 ρV2 Kinetic energy of liquid particle per volume unit2ρgz Potential Energy of liquid particle per volume unit

Where ρ = density of liquid g = gravitational acceleration

z = height respect to one plane of reference V = liquid velocity

PA = 1 ρVB 2 rArr

2

K = Q rArr

PK =

Q1 = Q2 rArr

P1 P2

Q = A V rArr

Q = A x C x P rArr

1 P + 1 ρV2 + ρgz = E

2

VB = 2 PA rArr ρ

Q1 = P1

Q2 P2

3 V = C P

4 Q = K P

2 PA + 1 ρVA 2 + ρgzA = PB + 1 ρVB

2 + ρgzB 2 2

EXIT VELOCITY DEPENDS UPON PRESSURE

NOZZLE CAPACITY DEPENDS UPON PRESSURE

NOZZLE CAPACITYAT A DIFFERENT PRESSURE

5 Q2 = Q1 P2

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LIQUID SPRAY AND SPRAY NOZZLES Nozzle flow rate

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SLIQUID SPRAY AND SPRAY NOZZLES Nozzle flow rate

The Equation (5) has been obtained after having simplified the real problem neglecting several factors like for examplebullInmostofthepracticalapplicationcasestheflowisturbulentandnotlaminarbullFrictionlossestendtostronglyincreasewithliquidvelocitybullDependinguponthetypeofnozzleadifferentpercentageoftheavailableenergyisusedtobreakupthejetandgivethe

desired spray pattern and spray angle

For the above reason equation (5) gives reliable results if used in a limited pressure range around the pressure value where the flow rate is known with this pressure range depending upon the type of nozzleOur experience has shown that one can expect the error in the calculated value to be lower than +- 6 for pressure values ranging from 13 to 3 times the reference value

As an example a nozzle rated for 10 lpm at 3 bars would have according to equation (5) the following flow valuesa 1 bar 577 lpma 9 bar 173 lpmin real conditions it can be expected the flow rate values to beas high as 61 lpm a 1 baras low as 162 lpm a 9 barAbove considerations are to be used as a guideline only because of the many factors influencing real operations which have not been considered here for example liquid temperature viscosity and density

Possible percentage deviation from theoretical flow rate values

Also above mentioned percentage errors have to be understood for nozzles using part of the flow energy to produce wide angle spray patternsLower values can be expected for narrow angle nozzles impact nozzles and straight jet nozzles Laboratory tests and diagrams showing real flow rate values for each nozzles are used in practice when a precise result must be available

Nozzle discharge coefficient

With reference to equation (4) if we consider the pressure value to be equal to 1 (P = 1 bar) the flow rate of the nozzle becomes

K is a parameter widely used in the fire fighting industry

In some instances reference is made to the nozzle discharge coefficient or shortly to the nozzle coefficient to indicate the nozzle flow rate for a unitary pressure Of course for a given pressure value Pn the flow value will be

+ 6

+ 3

- 3

- 6

CAPACITY AT A GIVEN PRESSURE VALUEWHEN K KHOWN

NOZZLE CAPACITYFOR P=1 barQ = K P = K 1 = K

6 Qn = K Pn

21wwwpnr-nozzlescomCTG SH 07 EU

The spray angle is the opening angle which the nozzle jet of droplets forms at the moment when it leaves the nozzle orifice and it is one of the fundamental parameters for the choice of a given nozzleIn fact the amplitude of the spray angle determines in connection with the distance between the nozzle orifice and the target to be covered the spray coverage and the density of liquid sprayed with respect to the cover area See our Catalogue for description of the different nozzle spray patterns The table at the bottom of the page gives the theoretical spray width based on the nozzle spray angle and the distance from the nozzle orifice It is important to note that because of several factors like gravity forces and aerodynamic drag the spray angle value cannot be maintained but in in a limited distance normally up to 300 mm from the orifice For air assisted atomizers it is improper to use the term spray angle since no precise value can be measured Therefore the values given by Catalogues are to be intended as guidelines only

THEORETICAL SPRAY COVERAGE

at various distances from nozzle orifice

Spray 50 100 150 200 250 300 400 500 600 700 800 1000 Angle mm mm mm mm mm mm mm mm mm mm mm mm

15deg 13 26 40 53 66 79 105 132 158 184 211 263 25deg 22 44 67 89 111 133 177 222 266 310 355 443 30deg 27 54 80 107 134 161 214 268 322 375 429 536 35deg 32 63 95 126 158 189 252 315 378 441 505 631 40deg 36 73 109 146 182 218 291 364 437 510 582 728 45deg 41 83 124 166 207 249 331 414 497 580 663 828 50deg 47 93 140 187 233 280 373 466 560 653 746 933 60deg 58 116 173 231 289 346 462 577 693 808 924 1150 65deg 64 127 191 255 319 382 510 637 765 892 1020 1270 70deg 70 140 210 280 350 420 560 700 840 980 1120 1400 75deg 77 154 230 307 384 460 614 767 921 1070 1230 1530 80deg 84 168 252 336 420 504 671 839 1010 1180 1340 1680 90deg 100 200 300 400 500 600 800 1000 1200 1400 1600 2000 95deg 109 218 327 437 546 655 873 1090 1310 1530 1750 2180 100deg 119 238 358 477 596 715 953 1190 1430 1670 1910 2380 110deg 143 286 429 571 714 857 1140 1430 1710 2000 2290 2856 120deg 173 346 520 693 866 1040 1390 1730 2080 2430 2771 3464 130deg 215 429 643 858 1070 1290 1720 2150 2570 3002 3431 4289

WhereASCbull = Actual Spray CoverageTSCbull = Theoretical Spray CoverageASAbull = Actual Spray AngleTSAbull = Theoretical Spray AngleL bull = Spray Distances

TSC = 2 middot L middot ctan ( TSA )2

7

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S

LIQUID SPRAY AND SPRAY NOZZLES Spray angle

22 wwwpnr-nozzlescom CTG SH 07 EU

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SLIQUID SPRAY AND SPRAY NOZZLES Spray angle

Depending upon the nozzle design variations of feed pressure may have a great influence on the spray angle valueGenerally with increasing pressure turbulence full cone nozzles will produce narrower angles flat jet nozzles will show a wider angle spray while nozzles working on the deflection principle like spiral nozzles and K style flat jet nozzles will be less affected by pressure changesAll nozzles will not function properly with very low pressure values (from 05 bar down depending upon nozzle type ) with a marked decay in performance larger drops not well defined spray pattern lower spray angle values

The above pictures show spray angles for different nozzles and different pressure valuesShould your application strictly require that a given value of the spray angle is obtained under a given pressure value or pressure range of values please obtain a test report from our laboratories

Full cone nozze DDW 2235

Flat jet nozzleJCW 2245

Spiral nozzeECW 2230

Pressure 05 bar Pressure 05 bar Pressure 05 bar

Pressure 3 bar Pressure 3 bar Pressure 3 bar

Pressure 10 bar Pressure 10 bar Pressure 10 bar

Photo obtained with 120000s flashlight

picture 1

picture 4

picture 7

picture 2

picture 5

picture 8

picture 3

picture 6

picture 9

NotePicture 2 shows clearly the droplet generation mechanism as described at page 15

23wwwpnr-nozzlescomCTG SH 07 EU

Terms and definitions

A very important characteristic of a spray nozzle is a parameter called Spray Distribution which gives a precise information about how evenly the drops of the spray are distributed onto the area covered by the sprayIt is self understood that normally it is preferable to obtain the most even distribution possibleIn the past this was done through the visual examination of a diagram reporting the quantity of water contained for example in glass pipes aligned onto the spray coverage areaPnr has determined to obtain such a result in a scientific way through high technology instrumentation as shown in the pictures below showing one of our patternators and a typical distribution diagram

Now to the spray geometry and some definition letrsquos consider a nozzle with a capa-city Q at the pressure PAt every value for distance H which we call height of spray we can define a plane lsquonrsquo normal to the nozzle axis on which a line can define the intersection of the spray onto the planeThe area covered by the spray on the plane lsquonrsquo has a surface S depending from the following parametersa) Spray pattern Fb) Opening angle of the spray αc) Height of the spray H

We can then write S=S( F α H )

In case of a full cone nozzle S is a circle with diameter C and S = 0785 C2

The capacity of the nozzle flows through the surface S but each smaller area inside the surface S will probably have a different value for the flow passing through itWe introduce then the value of Specific Capacity q

1) Specific Capacity

The function q depends upon the single point (xy) in the section S and then

Determining the function q is however very expensive therefore in practice two different functions are used which give in most occurrences sufficient information

2) Linear Distribution

3) Angular distribution

part Qpart x

qx =

Diagram 1

q = limΔS 0

ΔQΔS

q = = f (x y H)part Qpart S

part Qpart φ

qφ =

ΔQ is the liquid flowing through a surface ΔSwhere ΔS is a fraction of the surface S

x and y are the local coordinates in the section planewhere H is the distance of the test surface from the nozzle orifice

partQ is the variation in capacitywhere partx is the variation of a generic linear coordinate

partQ is the variation in capacitywhere partφ is the variation of a generic angular coordinate

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LIQUID SPRAY AND SPRAY NOZZLES Spray Distribution

24 wwwpnr-nozzlescom CTG SH 07 EU

LIQUID SPRAY AND SPRAY NOZZLES Spray Distribution

Values extracted from these functions can characterize the spray and allow for drawing the diagrams defined as Distribution Curves

Analyzing the above curves it is possible to determine the type of water distribution along the spray coverage and the type of spray pattern like for example a full cone hollow cone flat or straight jet spray

Distribution measurement

The water distribution along the spray coverage is determined by means of an instrument called Patternator

A patternator consists of the following parts 1) Liquid collector2) Cell block3) Measure block4) Unloading block

The nozzle is above the instrument and it is orienta-ted in such a way the jet is collected into the upper liquid collectorThe liquid collector can be linear ( diagram 5 ) or round ( diagram 6 ) according to the test being runFrom the single parts in the collector the liquid is sent into the corresponding cells below (2)

The Measure block (3) determines the liquid content in each single cell then the unloading block (4) empties the instrument sending the liquid to the collection drain

There are two types of patternators

Analogic1 the different levels of liquid is visible through the transparent walls of the cells or pipes sometimes containing some kind of floating balls and a picture can be taken with a cameraDigital2 Delivering an automatic reading of the values in the cells the values being supplied as an electronic file from which a distribution curve can be easily obtained

Diagram 2 Linear distribution Diagram 3 Angular distribution

Diagram 4

Diagram 6 Circular collectorDiagram 5 Linear collector

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25wwwpnr-nozzlescomCTG SH 07 EU

LIQUID SPRAY AND SPRAY NOZZLES Spray Distribution

Normalizing distribution curve

The values obtained from the cells of the patternator showing the water quantity collected in the single cells allow for preparing a Distribution curve which can be given as a single line curve or as a row of vertical barsThese resemble the liquid level collected into the glass pipes of the old type instrumentation

The curves prepared based on the liquid level in the single cells still are not precise they depend in fact from the testing time the longer this time the larger the liquid quantity sprayedTo eliminate the influence of time from the test it is necessary to transform the effective curves to normalized curves

Normalized4) linear distribution

Normalized5) angular distribution

Please note that Maximum value is the one belonging to the series of values measured in the cellsIn addition to the distribution it is possible to normalize the intervals to with the following formulas

Normalized 6) linear interval

Normalized 7) angular interval

The linear normalized amplitude is defined inside an interval [-1 +1]The angular normalized amplitude is defined inside an interval [0+2π]

Diagram 7 Effective linear distribution curve Diagram 8 Effective angular distribution curve

Mx

xx q

q=δ

N

πθ

2=Δ

Diagram 9 Normalized linear distribution curve Diagram 10 Normalized angular distribution curve

qx is the linear distribution of a generic cellwhere qx

M is the maximum linear distribution measured

qφ is the linear distribution of a generic cellwhere qφ

M is the maximum linear distribution measured

2 is the normalized linear amplitude of the spraywhere N is the number of active cells (active cells = cells containing liquid)

2π is the normalized angular amplitude of the spraywhere N is the number of active cells (active cells = cells containing liquid)

Mq

q

ϕ

ϕϕδ =φ

φ

φ

2

N=Δλ

2

N=Δλ

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26 wwwpnr-nozzlescom CTG SH 07 EU

Evaluation of spray distribution

To evaluate distribution curves it is necessary to take three properties into consideration

a) UNIFORMITY b) MONOTONY c) SIMMETRY

As described in the following diagrams and definitions

a) UNIFORM A distribution that minimizes the ratio AAdeg

b) MONOTONE Is a distribution with a curve which grows on the left side and decreases on the left side c) SYMMETRIC Is a distribution which minimizes the Ratio A+A-

Based on the above definitions the following curves show the ideal situations

The three properties are then evaluated by means of the following parameters

1 Integral uniformity

2 Incremental uniformity

3 Symmetry index

Complete details about the above formulas and definition can be found in our Technical Bulletin REL 080002 which shall be released from our Technical Department on request

Diagram 12Normalized and monotone distribution

Diagram 11Normalized and monotone distribution

Diagram 14Ideal monotony

Diagram 15Ideal symmetry

Diagram 13Ideal uniformity

1001 sdot=MA

AU

1002

2 sdot=lowastσ

U

1001

sdot⎥⎦

⎤⎢⎣

sdotminus=

lowast

lowast

δ

ε

NI S

sum minus=lowast

M

i iδδε

A is the area included in the normalized curvewhere Adeg is the rest of the area included in the 2x1 rectangle

Left side is the area -1 0where Right side is the area 0 +1

A+ is the area included below the curve on the right sidewhere A- is the area included below the curve on the left side

where

where δrsquo is the value of normalized liquid content in the symmetric cell N number of cells containing liquid in half of the diagram

lowast

lowast sum=

N

N

i i

δ

δ N Number of cells containing liquid

A area included below the curve AM area included below the ideal curvewhere

sum minus= +lowast

1

N

i ii δδσ

N Number of cells containing liquid

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SLIQUID SPRAY AND SPRAY NOZZLES Spray Distribution

27wwwpnr-nozzlescomCTG SH 07 EU

Liquids are characterized for their property of undergoing continuous deformation when subjected to shear stress The property of fluids (liquids or gases) to resist flowing due to the existence of internal friction within the fluid is called visco-sity

Thus if we imagine the different layers of fluid sliding one over the other with friction we can imagine that viscosity is defined the force required to move a unit area of fluid for a unit distance Viscosity is measured with many different systems among which the most used are the following

The following table shows correspondences between the most used viscosity units

The viscosity value of a liquid depends upon the temperature therefore the viscosity value must always be given with reference to a temperature value The viscosity of water (20deg C) is 1 Centipoise and 1 Centistoke since water mass density = 1

KINEMATIC SAYBOLT SAYBOLT ENGLER VISCOSITY UNIVERSAL FUROL

Centistoke Sq feetsec SSU SSF Degrees

100 000001076 310 --- 100

500 000005382 424 --- 137

1000 00001076 588 --- 183

1566 00001686 80 --- 245

2052 00002209 100 --- 302

2515 00002707 120 --- 357

4295 00004623 200 --- 592

1080 0001163 500 523 1460

1510 0001625 700 720 2044

1942 0002090 900 921 2628

3023 0003254 1400 143 4090

3885 0004182 1800 183 5260

5394 0005806 2500 254 7300

10788 001161 5000 509 146

15103 001626 7000 712 204

19419 002092 9000 916 263

32365 003483 15000 1526 438

METHOD UNIT DIMENSIONS NOTES

1 Dynamic viscosity(Absolute viscosity) Poise ML T-1 Poise = 100 Centipoises = (1 dyne per seccm2)

2 Kinematic viscosity Stoke L2 T-1 1 Stoke = 100 Centistoke = (cm2sec)Kinematic viscosity = Dynamic viscositydensity

3 SSUSSF

One of the most widely instruments to determine is the Saybolt viscosimeter which measures the time in seconds required for a fixed volume of a given liquid to flow through an orificeSSU = Seconds Saybolt Universal relates to a smaller orifice for less viscous liquidsSSF = Seconds Saybolt Furol relates to a larger orifice for more viscous liquids

LIQUID SPRAY AND SPRAY NOZZLES Influence of liquid viscosity

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28 wwwpnr-nozzlescom CTG SH 07 EU

Viscosity influence on nozzle flow rate

AlI nozzle Catalogue data refer to spraying water (water cinematic viscosity is equal to 1 Centistoke)A liquid with viscosity higher than water will require more energy to be pumped and sprayed and will flow with lower velocity at the same pressure and this will cause a reduction in the turbulence of the flow For the above reason nozzles working on the turbulence principle like normal full cone nozzles and whirl hollow cone nozzles will show an increase in capacity while spraying liquids with viscosity higher than water This increase is very consistent for small size nozzles where the small radius of the whirl chamber tends to cause high turbu-lence in the flow and tends to diminish and to disappear for nominal capacity valves (capacity values at 3 bar) larger than 15 liters per minute

The graph below shows for a liquid with a viscosity of about 4 Centistokes typical variations in the nozzle flow rate value for different values of the nozzle whirl chamber diameter As it may be seen these variations can be neglected in most practical applications where nozzles with whirl chamber diameters well over 3 mm are used

For other types of nozzles not working on the turbulence principle the increase on viscosity will simply reduce the liquid exit velocity at the orifice thus causing a decrease in capacity Experience shows that this decrease ranges between 3 and 6 of nominal water capacity that is to say that the variation introduced is in the same order of magnitude as the nozzle flow rate toler-ance

Viscosity influence on nozzle spray angle and spray pattern

With reference to the theory of jet break-up and droplet information it can be easily imagined that spraying a liquid more viscous than water is a difficult task

Al the properties of the spray tend to worsen therefore one can expectA higher value for the minimum operating pressure that is the pressure value which allows for obtaining a well defined 1 spray with the expected spray angle A worse spray distribution since the viscous behavior of the liquid makes it more difficult to pro-duce fine droplets and 2 to distribute them evenly with the desired spray pattern A narrower spray angle It is difficult to give guidelines since results on different nozzles at different pressures and with 3 different liquids are scarcely predictableHowever our experience shows that in many cases the use of impact nozzles can give acceptable results where all other type of nozzle failsA laboratory test or a field test are stili the safest way to obtain sound results

50

45

40

35

30

25

20

15

10

5

0 2 3 4 5 6 7 8 9

Increase Flow rate vs Whirl Chamber Diameter

Incr

ease

Flo

w R

ate

[mm

]

Whirl Chamber Diameter [mm]

LIQUID SPRAY AND SPRAY NOZZLES Influence of liquid viscosityLI

QUID

SPR

AYAN

D SP

RAY

NOZZ

LES

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With reference to the Bernoulli Rule as exposed in page 6 one can say that the pressure energy of the liquid flow at the nozzle inlet is transformed totally (minus some losses due to friction inside the nozzle) into liquid velocity at the nozzle orificeCatalogue figures give nozzle capacities when spraying waterIf the specific gravity or density of the liquid is different from that of water the available pressure energy will produce a different liquid velocity at the nozzle orificesIn other words a given quantity of energy will spray always the same quantity of liquid mass but different volumes (flow rates) according to the liquid specific gravity or density

Therefore a liquid heavier than water will exit the nozzle with a lower velocity at lower flow rate while to the contrary a liquid lighter than water will be sprayed at higher velocity at higher flow rate

The following formula is to be applied

The table below gives the value of a correction factor to obtain the flow rate of a liquid with different specific weight as water

WhereQL Liquid flow rateQW Water flow rateF Correction factor

kgliter Libregallon F

06 50 129

07 58 120

08 67 112

09 75 105

10 83 100

11 92 095

12 100 091

13 109 088

14 117 085

15 125 082

16 134 079

17 142 077

18 150 075

19 159 073

20 167 071

QL = F QW8

LIQUID SPRAY AND SPRAY NOZZLES Influence of liquid specific gravity

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30 wwwpnr-nozzlescom CTG SH 07 EU

The spraying water impact of a nozzle depends on several factors and more precisely spray distribution pattern and spray angle The first step to calculate the impact value which is usually expressed in Kilograms per square centimeter is to deter-mine Total Theoretical lmpact Value using the following formula

The obtained value has to be multiplied by the Total Theoretical Impact per Square Centimeter Coefficient (E)The final value is the Spraying Liquid Impact expressed in kgpcm2Of course not alI the energy of the fluid vein is transferred to the impact point

A part of this energy sometimes a considerable part goes to obtain a desired spraying angle by having the liquid vein acquire a high rotational speed inside the whirl chamber The highest value of impact is obtained with straight jet nozzle and the value can be calculated multiplying spraying pressure per 19The tables below containing the Total Theoretical Impact sqcm coefficient values for different spray pattern nozzles for a dis-tance of 300 mm

[kgpcm2]

TOTAL THEORETICAL IMPACT PER SQ CM COEFFICIENT AT DISTANCE OF 300 MM (E)

Spray Flat jet nozzle Spray Full cone nozzle Spray Hollow cone nozzle Angle Angle Angle

15deg 0300 15deg 0110 25deg 0180 35deg 0130 30deg 0025 40deg 0120 50deg 0100 50deg 0010 65deg 0070 65deg 0004 60deg80deg 001002 80deg 0050 80deg 0002 100deg 0001

WhereQ is the flow rate at working pressure in lpmP is the pressure value in kgpcm2

[kgpcm2]TTI = 0024 Q P

SLI = E TTI

9

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SLIQUID SPRAY AND SPRAY NOZZLES Jet impact

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Jet impact diagram

A further parameter to characterize the performance of a spray nozzle is the distribution of the jet impact force which could be derived by means of mathematical methods from the values of the spray distribution onto the surface covered by the spray but which can more easily be measured with the help of specifically designed instrumentation

In some applications the jet impact force Is the most important parameter used to realize the required processSteel sheet descaling in a rolling mill is a typical example where the jet impact is required to take away the surface scale and obtain a perfectly even surfaceFor that reason special nozzles have been developed to perform this very task where service life impact value and spray distribution reach the values required for satisfactory resultThese test are performed in a laboratory equipped with a specifically designed instrumentation where the high pressures involved in these process can be reached which can measure the pressure values along a matrix of points distributed in the spray area covered by the nozzle

These values are supplied both in a table of values and as a 3D pressure diagram similar to those shown below

On such applications where producing high impact values in the jet is necessary it is of paramount importance that the liquid flow turbulence is kept to a minimum and therefore it is widely used to insert into the nozzle entrance devices designed to improve the operating conditions by forcing the liquid flow through straight passages with several different shapes by doing so the impact delivered by the spray is increased with the same feed pressure

One typical shape used by Pnr is shown on the right and the two dia-grams below show the impact force diagrams for the same nozzle with and without a flow straightener the reduction of flow turbulence can lead in increase of impact force often higher than 20Further improvements of course are available when the nozzle inside profile is properly designed in order to avoid sharp cross section changes and all surfaces are finished as smoothly as possible

Typical design of a Pnr flow straightener

Impact pressure diagram with flow straightenerImpact pressure diagram without flow straightener

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LIQUID SPRAY AND SPRAY NOZZLES Jet impact

32 wwwpnr-nozzlescom CTG SH 07 EU

LIQUID SPRAY AND SPRAY NOZZLES Pressure drop through a nozzle

Pressure drop through a nozzle

Some of our customers have asked us In the past which Is the pressure drop through a nozzle since they consider a nozzle one of the parts in a piping like a valve or an elbow which causes a given pressure drop along the line

The reality is different and can be easily understood when considering the Bernoulli formula [2] as given at page 19 of this manual the formula says that the total energy of a liquid flow is made from the addition of three facors

Potential energy due to elevationbullPressure energybullVelocity energybull

When we apply the formula at the entrance and at the outlet ( the orifice ) of a nozzle and we neglect the influence of turbulence losses in between we can easily see that

The potential energy variation can be neglected because of the limited dimensions of the nozzle since the distance bullbetween the nozzle entrance and the nozzle orifice plays no role-The pressure energy variation is important since the liquid pressure value falls abruptly from the pressure inside the feed bullpipe to the ambient pressureThe velocity energy variation is also consistent since the liquid is ejected from the orifice at high speedbull

In other words the pressure energy of the liquid flowing through the orifice is suddenly transformed in liquid drops velocity which is exactly what a nozzle is designed to do

This is shown from equation [3] at page 19 which allows the exit velocity from the nozzle to be calculated from the pressure inside the pipe ( we actually consider the pressure difference between the inside of the pipe and the ambient pressure in this formula )

In other words all the energy still available at the nozzle is converted into velocity or if you so prefer you have a total pressure fall The system designer shall therefore evaluate all the pressure drop between the pump outlet flange and the nozzle entrance in order to be sure that the nozzle feed pressure is sufficient to assure the desired capacity for the liquid being sprayed

parameters valuesat nozzle outlet

nozzle inlet nozzle oulet or orice

feed pressure

inlet velocity

parameters valuesat the nozzle inlet

(A)potential elevation

energy

(A)velocity ( kinetic ) energy

(A)pressure energy

ambient pressure

exit velocity

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33wwwpnr-nozzlescomCTG SH 07 EU

NOZ

ZLE

MAT

ERIA

LS

The choice of the right material for a nozzle is sometimes the most important one to do since the nozzle operating life depends upon it There are several factors to influence or shorten the nozzle operating life sometimes more than one at the same time the most important being

Wear from solid particles suspended into the liquid being sprayed1 Chemical corrosion from the liquid being sprayed 2 Chemical corrosion from the ambience outside the nozzle3 Exposure to high temperature 4 Exposure to mechanical shocks5

NOZZLE MATERIALSPnr material codes 34Properties of materials 35Mechanical properties of materials 39Chemical resistance of materials 40

NOZZLE MATERIALS

34 wwwpnr-nozzlescom CTG SH 07 EU

PNR has adopted a short code to identify construction materials for nozzles and nozzle partsHere below the most frequenty used materials

MATERIAL STANDARDS

The following standards are mentioned with reference to materials identification

NOZ

ZLE

MAT

ERIA

LS

A1 Free Cutting Steel E1 TEFLONreg (PTFE) L3 NICROFERreg 5923

A2 Carbon Steel E3 DELRINreg (POM) L4 STELLITEreg 6

A8 Zinc Plated Mild Steel E6 PERSPEXreg (PMMA) L5 HASTELLOYreg B2

A9 Nickel Plated Mild Steel E7 VITONreg (FPM) L6 HASTELLOYreg C4

B2 AISI 304 Stainless Steel E8 NBR- Sh 70 Rubber L61 HASTELLOYreg C22

B3 AISI 316 Stainless Steel E81 SANTOPRENEreg Rubber L62 ULTIMETreg

B31 AISI 316L Stainless Steel E82 KLINGERITEreg L7 NICKEL 201

B4 AISI 321 Stainless Steel E83 HYPALONreg L8 HASTELLOYreg C276

B8 AISI 309 Stainless Steel E91 Silicon L9 SANICROreg 28 SS

B81 AISI 310 Stainless Steel F12 Tungsten Carbide (TC) N1 AISI 302 Stainless Steel

C1 AISI 420 St Steel hardened F2 PIREXreg P6 ABS

C4 AISI 317 Stainless Steel F3 Rubin P7 FASIT OIL

C6 SAF 2205 Stainless Steel F4 Zapphire P8 EPDM ShA Rubber

D1 Polyvinylchloride (PVC) F5 Ceramic P9 STIROLUXreg 637

D2 Polypropylene (PP) F6 Silicon Carbide (SC) T1 Brass

D3 Polyamide (PA) G1 Cast Iron T3 Copper

D5 Powder Charged PP H1 Titanium T5 Bronze

D6 Fiberglass Charged PP L1 MONEL 400 T8 Nickel Plated Brass

D7 High Density Polyethylene L2 INCOLOYreg 825 V1 Aluminium

D8 Polyvinylidenefluoride (PVDF) L21 INCONELreg 600 V7 Aluminium ENP

STANDARD ORGANIZATION COUNTRY STANDARD CODE

AFNOR Association Franccedilaise de Normalisation France NF

AISI American Iron and Steel Institute USA AISI

ANSI American National Standards Institute USA ANSI

ASTM American Society for Testing and Materials USA ASTM

BSI British Standards Institution UK BS

DIN Deutsches Institut fuumlr Normung Germany DIN

DSIT Dansk StandardsInformation Technology Denmark DS

ISO International Organization for Standardization International ISO

JIS Japanese Institute for Standard Japan JIS

UNI Ente Nazionale di Unificazione Italy UNI

NOTEThe complete list of the Materials Codes may be requested to our Technical Service mentioning release code TGCE CODMAT

NOZZLE MATERIALS PNR material codes

35wwwpnr-nozzlescomCTG SH 07 EU

NOZ

ZLE

MAT

ERIA

LS

B1 AISI 303 STAINLESS STEEL

Chemical composition CR 1750 NI 850 S 025 Coding correspondence

Type Stainless Steel Austenitic AISI 303

Hardening Not possible BS 303 S 21

Annealing 1050 1100deg C in water DIN Wnr 14305

Welding Possible with precautions Euro X10CrNiS1809

Corrosion properties

Good resistance Atmospheric exposure food substances organic chemicalsLow resistance Chlorides reducing acids and over 800deg C

JIS SUS 303

NF Z6CN 18-09

SIS 2346

UNI XWCrNiS 1809

B3 AISI 316 STAINLESS STEEL

Chemical composition C 005 CR 170 NI 120 MO 225 Coding correspondence

Type Stainless Steel Austenitic AISI 316

Hardening Not possible BS 316 S 21

Annealing 1050 1100deg C in water DIN Wnr 14401

Welding Easy using same steel electrodes Euro X6CrNiMo17122

Corrosion properties

Good resistance Atmosphere great number of salts organic acids foodsLow resistance Solutions of reducing acids temperatures over 500deg C

JIS SUS 316

NF Z6CND 17-11

SIS 2347

UNI X5CrNiMo1712

B31 AISI 316L STAINLESS STEEL

Chemical composition C 003 CR 170 NI 130 MO 225 Coding correspondence

Type Stainless Steel Austenitic AISI 316 L

Hardening Not possible BS 316S12

Annealing 1050 1100deg C in water DIN Wnr 14404

Welding Easy using same steel electrodes Euro X3CrNiMo1810

Corrosion properties

Good resistance Atmosphere great number of salts organic acids foods salt waterLow resistance Solutions of reducing acids temperatures over 500deg C

JIS SUS 316L

NF Z2CND17-12

SIS 2348

UNI X2CrNiMo 1712

NOZZLE MATERIALS Properties of materials

36 wwwpnr-nozzlescom CTG SH 07 EU

C1 AISI 420 STAINLESS STEEL

Chemical composition C 020 CR 1300 Coding correspondence

Type Stainless Steel Martensitic AISI 420

Hardening 980deg - 1030deg C in oil BS 420 S 29

Annealing 750deg - 800deg C in air DIN Wnr 14021

Welding Possible with precautions Euro X20Cr13

Corrosion properties Good resistance Drinkable water steamgasoline oil alcohol ammonia

JIS SUS 420 J1

NF Z20C13

SIS 2303

UNI X20Cr13

C2 AISI 416 STAINLESS STEEL

Chemical composition C 012 CR 1250 S 022 Coding correspondence

Type Stainless Steel Martensitic AISI 416

Hardening 950deg - 1100deg C in oil BS 416 S 21

Annealing 750deg - 800deg C DIN Wnr ---

Welding Not possible Euro X120CrS13

Corrosion properties Good resistance Drinkable water steamgasoline oil alcohol ammonia

JIS SUS 416

NF Z12CF13

SIS ---

UNI X12CrS13

D8 POLYVINYLIDENE FLUORIDE (PVDF)

Description HIGH-MOLECULAR WEIGHT THE TOUGHEST OF THE FLUOROCARBON RESINS

Trade names amp SuppliersKYNAR (Atochem North America Inc formerly Penwalt Corporation)

SOLEF (Solvay Polymer Corporation)

Physical andMechanical Properties

Excellent resistance to abrasion and stress fatigue

Extremely pure opaque white resin

Thermal Properties UsefuI in temperatures ranging from -73 149degC (-100 300degF)Heat deflection temperature is (8090deg C at 182 Bars (176 194deg F at 264 psi)

Chemical Compatibility

Excellent chemical resistanceCan be used with wet or dry halogens most strong acids and bases aliphatics aromaticsalcohols and strong oxidizing agentsNot recommended for contact with ketones esters amines and some organic acids(fuming sulfuric acid)

NOZZLE MATERIALS Properties of materialsN

OZZL

E M

ATER

IALS

37wwwpnr-nozzlescomCTG SH 07 EU

E1 POLYTETRAFLUOROETHYLENE (PTFE)

Description FLUOROPLASTIC THAT HAVE SOME OR ALL OF THEIR HYDROGEN MOLECULESREPLACED BY FLUORINE

Trade names amp Suppliers

TEFLON TFE FEP and PFA (Dupont Polymer Products)

NEOFLON (Daikin)

FLUON (ICI Americas Inc)

SST-2SST-3 (Shamrock Technologies Inc)

Physical andMechanical Properties

Low coefficient

Low adhesiveness

Buona resistenza agli agenti atmosferici

Good weatherabilityLow resistance to creep and wear unless reinforced with glass figravebers which results in superior resistance

Thermal Properties High and low temperature stabilityHeat deflection temperatures range from 4855deg C at 182 bar (118-132deg F at 264 psi)

Chemical CompatibilityChemically inert

Totally insoluble

E3 ACETAL (ACETAL HOMOPOLYMERS AND COPOLYMERS)

Description HIGHLY CRYSTALLINE RESINS BASED ON FORMALDEHYDE POLYMERIZATION TECHNOLOGY

Trade names amp Suppliers

DELRIN (Dupont Polymer Products Corporation)

CELCON (Hoechst Celanese Corporation)

ULTRAFORM (BASF Corporation)

RTP 800 (RTP Corporation)

LUPITAL amp TENAL (Franklin Polymers Inc)

FULTRON 404 (ICI Americas Inc)

Physical andMechanical Properties

High tensile strength rigidity and esilience

High fatigue endurance

Excellent dimensional stability

Low coefficient of friction

Outstanding abrasion and wear resistance

Excellent creep resistance

Thermal Properties Heat deflection temperatures range from 110 -136deg C at 182 bars(230 - 270deg F at 264 psi) higher if glass figravelled

Chemical Compatibility

Remains stable in long-term high temperature water immersionExcellent resistance to chemicals and solvents but prolonged exposure to strong acids not recommendedNote Suitable for close-tolerance high-performance partsAvailable for machined parts or may be injection molded

NOZZLE MATERIALS Properties of materials

NOZ

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MAT

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38 wwwpnr-nozzlescom CTG SH 07 EU

L6 HASTELLOY C4

PHYSICAL AND MECHANICAL PROPERTIES CHEMICAL COMPOSITION CORROSION RESISTANCE

R = 650800 Mpa C = 0015 max

Very good against pitting and tensile-corrosion specially in oxydizing atmosphereResistance in welded joints definitely better than C 276 lower than C22

Rp02 = 250470 Mpa Ni = 65

HRB = 90 Cr = 160

Mo = 155

W = --

Fe = 3 max

Ti = 05

Co = 2 max

APPLICATIONSRecommended for applications with strongly oxidizing atmosphere

L61 HASTELLOY C 22

PHYSICAL AND MECHANICAL PROPERTIES CHEMICAL COMPOSITION CORROSION RESISTANCE

R = 700800 Mpa C = 001 max

Excellent performances with oxydizing atmospheres as well as for pitting and tensile-corrosion conditionsVery good resistance in reducing atmospheres and for welded joints

Rp02 = 360420 Mpa Ni = 56

HRB = 93 Cr = 22

Mo = 13

W = 3

Fe = 3

Ti = --

Co = 25 max

APPLICATIONSChemical industry (gas ducts gas washing and treatment systems phosphoric acid production) Heat exchangers pumps chlorination reactors

L8 HASTELLOY C 276

PHYSICAL AND MECHANICAL PROPERTIES CHEMICAL COMPOSITION CORROSION RESISTANCE

R = 600800 Mpa C = 0015 max

Very good in reducing and oxydizing atmospheresVery good against pitting and tensile-corrosionAcceptable resistance in welded jointsIn cast parts excessive segregation not eliminated by thermal treatment of annealing makes it convenient to use C22 or C4 qualitieswhich assure better corrosion resistance and mechanical properties

Rp02 = 300370 Mpa Ni = 57

HRB = 90 Cr = 145165

Mo = 1517

W = frac345

Fe =

V = 035 max

Co = 25 max

APPLICATIONSChemical industry (air ducts scrubbers fans) Paper industry Thermoelectric plants Steel thermal treatments

NOZ

ZLE

MAT

ERIA

LSNOZZLE MATERIALS Properties of materials

39wwwpnr-nozzlescomCTG SH 07 EU

MATERIALTENSILE STRENGHT

CORROSION RESISTANCERp 02 R

20degC 800degC 20degC 800degC

(68degF) (1408degF) (68degC) (1408degC)

AISI 302 280 100 680 200

Good sensitive to corrosionbetween grains for slow heatingand cooling in the 450-900deg Crange temperature

AISI 303 280 100 680 200 Discrete

AISI 304304L 270 90 600 100Good especially for 304L304 sensitive to corrosionbetween grains like AISI 302

AISI 309 250 100 640 220 Good Sensitive to corrosion between grains like AISI 302

AISI 310 310 170 650 270Good (gt 304 - 304L)Sensitive to corrosionbetween grains like AISI 302

AISI 316316L 270 110 560 220 Very high especially for 316L

AISI 321 210 100 540 140 Good

AISI 347 280 120 620 200 Good

AISI 416 620 70 750 90

Good in medium corrosive ambient (atmosphere water gasoline alcohol N1-13 foods)Not in high corrosive

BRASS 110-150 --- 360-410 --- Good especially when nickel plated

BRONZE 100-300 --- 200-600 --- Discrete especially with sea water

CAST IRON le 500 V 100-800 V

NICKEL ALLOYS 100-1000 V 300-1300 VVery high also for high temperature To use in the temperaturerange 800-1200deg C

PLASTICS --- --- 20-200 ---

Good also for erosionGenerally they are attackedwith oxidizers like nitric acidhalogens ect

PTFE --- --- 30-40 ---

Very high except for elementarystate of alkaline metalsand to compounds containingfluorine at high temp

DUPLEX STEEL gtAISI 3 gtAISI 3 gtAISI 3 gtAISI 3 Very high also with high temperatureand also for pitting

TITANIUM alloy 195-850 V 300-900 VVery high in oxidizing ambientVery low in reducing ambient and with compounds containing fluorine

Legend Rp 02 = 02 YIELD STRENGHT [MPa]R = ULTIMATE TENSILE STRENGHT [MPa]V = To verify time by time

NOZZLE MATERIALS Mechanical properties of materials

NOZ

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MAT

ERIA

LS

73wwwpnr-nozzlescomCTG SH 07 EU

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PIPINGPipes data 74Economic pipe sizes 75Pressure drop in clean steel pipes 76Flange dimensions 78Sieve size conversion chart 80

PIPING

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The following table report the data of pipes according to ANSI B3619 that is one of the most used standards that regulate welded stainless steel pipes

DN NPS OD[mm]

SCHEDULE

5S 10S 40SSTD 80SXS

t m t m t m t m

[mm] [kgm] [mm] [kgm] [mm] [kgm] [mm] [kgm]

6 18 103 NA NA 124 028 173 037 241 048

8 14 137 NA NA 165 050 224 064 302 081

10 38 172 NA NA 165 064 231 086 320 112

15 12 213 165 081 211 101 277 128 373 164

20 34 267 165 103 211 130 287 171 391 223

25 1 334 165 131 277 212 338 254 455 328

32 1frac14 422 165 167 277 273 356 344 485 453

40 1frac12 483 165 192 277 315 368 411 508 549

50 2 603 165 242 277 399 391 551 554 759

65 2frac12 730 211 374 305 534 516 875 701 116

80 3 889 211 458 305 655 549 115 762 155

90 3frac12 1016 211 525 305 752 574 138 808 189

100 4 1143 211 592 305 849 602 163 856 226

125 5 1413 277 960 340 117 655 221 953 314

150 6 1683 277 115 340 140 711 287 1097 432

200 8 2191 277 150 376 202 818 431 1270 656

250 10 2730 340 229 419 282 927 611 1270 827

300 12 3239 396 317 457 365 953 749 1270 988

350 14 3556 396 348 478 419 NA NA NA NA

400 16 4064 419 421 478 480 NA NA NA NA

450 18 457 419 474 478 541 NA NA NA NA

500 20 508 478 602 554 696 NA NA NA NA

550 22 559 478 662 554 767 NA NA NA NA

600 24 610 554 837 635 959 NA NA NA NA

Where

DN = Nominal diameter NPD = Nominal Pipe Size OD = Outside Diameter t = Wall Thickness m = Specific WeightPIPI

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PIPING Pipes data

75wwwpnr-nozzlescomCTG SH 07 EU

The following Specific Pressure Drops (Y) are normally used in the good engineering practice(where Y=ΔPL ΔP Pressur Drop and L Pipe Lenght)

For pipe sizing the Velocity (V) is also usedIn the following table are shown the typical liquid velocities in steel pipes

Some fixed pressure drop values indicationsfor gate valves (fully open) consider a pressure drop of 5 metersbullfor normal bends consider a pressure drop of 5 metersbullfor a check valve consider a pressure drop of 15 metersbull

In the succeeding tables we show the velocity and specific pressure drop for several flow rates and pipe diameters

Not boiling waterY = 02divide05 bar100 m for pump discharge (07 bar100 m max if P gt 50 bar)

Y lt 0110 bar100 m for pump suction

Boiling water Y = 004divide005 bar100 m for pump suction (velocity = 03divide09 ms)

LIQUID LINE TYPE

Specific Pressure Dropsvs Velocity [ms]

0 lt V lt 2 3 lt V lt 10 10 lt V lt 20

NOT BOILING WATER

Pump suctionPump discharge (long)Discharge leads (short)Boiler feedDrainsSloped sewer

03 divide 0606 divide 0912 divide 2712 divide 2709 divide 12

-

06 divide 1209 divide 1515 divide 3715 divide 3709 divide 1509 divide 15

09 divide 1812 divide 2124 divide 4224 divide 42

-12 divide 21

HYDROCARBON LIQUIDS(normal viscosity)

Pump suctionDischarge heather (long)Discharge leads (short)Drains

05 divide 0808 divide 1112 divide 2709 divide 12

06 divide 1209 divide 1515 divide 3709 divide 15

09 divide 1812 divide 2124 divide 46

-

MEDIUM VISCOSITY OILPump suctionDischarge (short)Drains

--

03

05 divide 0901 divide 0209 divide 15

08 divide 1501 divide 0312 divide 18

OTHER WATERCooling tower Chilled waterSea water and generally foulingwater (long pipes) ()

06 divide 09 09 divide 15 12 divide 21

Note () In this case Cameron method has to be used with C=1 Y = 005 divide 012 bar100 m for principal manifold Y = 012 divide 023 bar100 m for secondary manifold

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PIPING Economic pipe sizes

76 wwwpnr-nozzlescom CTG SH 07 EU

18rdquo 14rdquo

1 0350 0370 0200 0090 38rdquo 12rdquo

2 0705 1340 0395 0331 0223 0082 0145 0029 34rdquo

3 1060 2890 0593 0673 0333 0176 0217 0061 0125 0016 1rdquo

4 1410 4940 0788 1150 0444 0291 0290 0101 0167 0027 0110 0010

5 1760 7460 0985 1750 0556 0424 0362 0149 0209 0040 0137 0014

6 1180 2460 0667 0594 0434 0207 0251 0054 0165 0019 114rdquo

8 1580 4060 0892 1020 0579 0351 0335 0091 0219 0033 0126 0009 112rdquo

10 1110 1530 0724 0534 0418 0136 0274 0049 0158 0012 0116 0006

15 1670 3250 1090 1130 0627 0284 0411 0099 0236 0026 0174 0012

20 2rdquo 2230 5600 1450 1900 0836 0481 0549 0168 0315 0043 0233 0021

30 0212 0013 212rdquo 2170 4130 1250 1020 0823 0353 0473 0092 0348 0043

40 0283 0022 0190 0007 2900 7180 1670 1760 1100 0606 0631 0155 0465 0073

50 0354 0032 0237 0012 2090 2700 1370 0911 0789 0233 0581 0108

60 0424 0044 0284 0017 2510 3810 1650 1290 0943 0321 0697 0150

70 0495 0079 0332 0022 3rdquo 2930 5120 1920 1720 111 0434 0814 0199

80 0566 0074 0379 0028 0248 0010 312rdquo 2190 2210 126 0554 0925 0253

90 0636 0093 0427 0035 0279 0013 0209 0006 2470 2770 142 0692 1040 0319

100 0707 0114 0474 0043 0310 0015 0232 0007 4rdquo 2740 3400 158 0843 1160 0392

150 1060 0238 0711 0090 0464 0031 0349 0016 0272 0008 4110 7440 236 181 1740 0828

200 1410 0414 0948 0153 0619 0053 0466 0027 0362 0014 315 314 2330 1450

250 1760 0625 1190 0233 0774 0080 0581 0040 0453 0021 5rdquo 2900 2200

300 2120 0889 1420 0324 0930 0112 0698 0055 0543 0030 0352 0011 3480 3070

350 2470 1190 1660 0438 1080 0150 0815 0074 0634 0040 0411 0014 6rdquo 4070 4160

400 2830 1550 1900 0563 1240 0195 0935 0096 0724 0051 0469 0018 0341 0007 4650 5380

450 3180 1930 2130 0707 1390 0242 1050 0120 0815 0063 0528 0022 0366 0009 5230 6790

500 3540 2380 2370 0867 1550 0298 1170 0147 0902 0076 0587 0027 0407 0011

550 3880 2870 2610 1040 1700 0354 1280 0174 0991 0092 0645 0032 0447 0013

600 4240 3390 2840 1220 1860 0418 1400 0204 1090 0110 0704 0037 0488 0015

650 4590 5560 3080 1420 2010 0486 1510 0239 1180 0127 0762 0043 0529 0017

700 4950 4550 3320 1650 2170 0560 1630 0275 1270 0146 0821 0050 0569 0020

750 5300 5200 3560 1880 2320 0637 1750 0314 1360 0164 0879 0057 0610 0023

800 3790 2130 2480 0721 1860 0354 1450 0185 0936 0064 0651 0025 8rdquo

850 4030 2390 2630 0805 1980 0395 1540 0209 1000 0072 0692 0028 0403 0007

900 2790 0901 2090 0438 1630 0232 1050 0008 0732 0032 0427 0008

950 2940 1000 2210 0486 1720 0258 1120 0087 0773 0036 0451 0010

1000 3100 1110 2320 0534 1810 0284 1170 0096 0814 0039 0474 0011

1100 3410 1290 2560 0643 1990 0341 1290 0116 0895 0047 0522 0012

1200 3720 1 580 2800 0763 2170 0403 1410 0135 0974 0055 0569 0015

1300 3030 0890 2360 0473 1530 0157 1060 0063 0616 0017

1400 3260 1020 2540 0544 1640 0183 1140 0072 0664 0019

1500 3490 1170 2720 0617 176 0208 1220 0083 0712 0022

1600 3720 1330 2890 0697 1880 0234 1300 0093 0758 0025

1700 10rdquo 3950 1490 3080 0784 1990 0260 1380 0104 0806 0028

1800 0546 0010 3260 0875 2110 0290 1470 0116 0854 0032

1900 0575 0012 3440 0965 2230 0323 1550 0129 0901 0034

2000 0606 0012 3617 1060 2340 0356 1630 0143 0946 0037

2200 0667 0015 3980 1280 2580 0429 1790 0172 1050 0045

2400 0727 0017 12rdquo 2820 0507 1950 0200 1140 0053

2600 0788 0021 0563 0009 3050 0589 2110 0234 1230 0061

2800 0848 0023 0606 0010 14rdquo 3280 0676 2280 0268 1330 0070

3000 0909 0026 0649 0011 0532 0007 3520 0773 2440 0306 1420 0080

3500 1060 0035 0760 0015 0620 0009 4110 105 2850 0416 1660 0108

4000 1210 0045 0866 0020 0709 0012 16rdquo 4690 135 3250 0532 1900 0139

4500 1360 0056 0976 0025 0798 0015 0606 0007 3660 0674 2130 0173

5000 1520 0069 1080 0029 0886 0018 0674 0009 4070 0822 2370 0212

6000 1810 0097 1290 0042 1070 0026 0808 0013 18rdquo 4880 1160 2850 0301

7000 2120 0130 1510 0055 1240 0035 0940 0017 0741 0010 5690 1580 3310 0403

8000 2420 0168 1730 0072 1420 0045 1080 0022 0847 0012 6510 2050 3790 0525

9000 2730 0210 1950 0091 1600 0056 1210 0027 0954 0015 4270 0659

10000 3030 0257 2170 0111 1770 0067 1350 0033 1050 0019 4740 0801

Legend Q Water Flow Rate (Lpm) V Velocity (ms) Y Specific Pressure Drops (bar100m)Water at ambient temperature in straight pipe

SPECIfIC PRESSURE DROPS fOR WATER fLOW IN CLEAN STEEL PIPE SCH 10S

Q V Y V Y V Y V Y V Y V Y V Y V Y [lm] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m]

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77wwwpnr-nozzlescomCTG SH 07 EU

SPECIfIC PRESSURE DROPS fOR WATER fLOW IN CLEAN STEEL PIPE SCH 40S

Legend Q Water Flow Rate (Lpm) V Velocity (ms) Y Specific Pressure Drops (bar100m)Water at ambient temperature in straight pipe

18rdquo 14rdquo

1 0458 0726 0251 0170 38rdquo 12rdquo

2 0918 2590 0501 0600 0272 0136 0170 0044 34rdquo

3 1380 5590 0752 1220 0407 029 0255 0091 0144 0023 1rdquo

4 1840 9570 1000 2090 0543 048 0340 0151 0192 0038 0120 0012

5 2290 14450 1250 3180 0679 070 0425 0223 0241 0057 0150 0017

6 1500 4460 0815 0980 0510 0309 0289 0077 0180 0024 114rdquo

8 2010 7360 1090 1690 0680 0524 0385 0129 0240 0041 0138 0011 112rdquo

10 1360 2520 0850 0798 0481 0193 0300 0061 0172 0015 0127 0008

15 2040 5370 1280 1690 0722 0403 0450 0124 0258 0032 019 0015

20 2rdquo 2720 9240 1700 2840 0962 0683 0600 0210 0344 0054 0254 0026

30 0231 0016 212rdquo 2550 6170 1440 1450 0900 0442 0517 0114 038 0053

40 0308 0027 0216 0010 3400 10720 1920 2500 1200 0758 0689 0193 0507 0091

50 0385 0039 0270 0017 2410 3830 1500 1140 0861 029 0634 0135

60 0462 0055 0324 0023 2890 5410 1800 1610 103 0400 0761 0187

70 0539 0098 0378 0031 3rdquo 3370 7270 2100 2150 1210 0541 0888 0248

80 0616 0092 0432 0039 028 0014 312rdquo 2400 2760 1380 0690 1010 0315

90 0693 0115 0486 0048 0315 0017 0235 0008 2700 3470 1550 0862 1140 0397

100 0770 0141 0540 0059 035 002 0261 0010 4rdquo 3000 4250 1720 1050 1270 0488

150 1150 0295 0810 0125 0524 0042 0392 0021 0304 0011 4500 9300 2580 2260 1900 1030

200 1540 0512 1080 0212 0699 0072 0523 0036 0405 0019 3440 3910 2540 1810

250 1920 0773 1350 0322 0874 0108 0653 0053 0507 0028 5rdquo 3170 2740

300 2310 1100 1620 0449 105 0152 0784 0074 0608 004 0387 0014 3800 3820

350 2690 1470 1890 0606 122 0203 0915 0099 0710 0053 0452 0018 6rdquo 4440 5180

400 3080 1920 2160 0780 14 0264 1050 0128 0811 0068 0516 0023 0375 0009 5070 6690

450 3460 2390 2430 0979 157 0328 1180 0161 0912 0084 0581 0028 0402 0012 5710 8450

500 3850 2950 2700 1200 175 0403 1310 0196 1010 0101 0646 0034 0447 0014

550 4230 3550 2970 1440 192 0479 1440 0232 1110 0122 0710 0041 0491 0016

600 4620 4200 3240 1690 2100 0566 1570 0273 1220 0146 0775 0047 0536 0019

650 5000 6880 3510 1970 2270 0658 1700 0319 1320 0169 0839 0055 0581 0022

700 5390 5630 3780 2280 2450 0759 1830 0368 1420 0194 0904 0063 0625 0025

750 577 6440 4050 2600 2620 0863 1960 042 1520 0218 0968 0072 067 0029

800 4320 2950 2800 0977 2090 0473 1620 0246 1030 0081 0715 0032 8rdquo

850 4590 3310 2970 1090 2220 0528 1720 0277 1100 0091 076 0036 0439 0009

900 3150 1220 2350 0585 1820 0308 1160 0100 0804 0041 0465 001

950 3320 1350 248 0649 1930 0342 1230 0111 0849 0045 0491 0012

1000 3500 1500 261 0714 2030 0377 1290 0122 0894 0049 0516 0013

1100 3850 1750 2870 0860 2230 0452 1420 0147 0983 0059 0568 0015

1200 4200 2140 3140 1020 2430 0534 1550 0172 1070 0069 0620 0018

1300 3400 1190 2640 0627 1680 0200 1160 008 0671 0021

1400 3660 1370 2840 0722 1810 0232 1250 0091 0723 0024

1500 3920 1560 3040 0818 1940 0264 1340 0105 0775 0027

1600 4180 1780 3240 0924 2070 0297 1430 0118 0826 0031

1700 10rdquo 4440 1990 3450 1040 2190 0331 1520 0132 0878 0035

1800 0590 0012 3650 1160 2320 0369 1610 0147 0930 0039

1900 0622 0014 3850 1280 2450 041 1700 0163 0981 0042

2000 0655 0015 40500 1410 2580 0452 1790 0181 1030 0046

2200 0721 0018 4460 1700 2840 0545 1970 0217 1140 0056

2400 0786 0021 12rdquo 3100 0645 2140 0253 1240 0065

2600 0852 0025 0600 001 3360 0749 2320 0296 1340 0076

2800 0917 0028 0646 0012 14rdquo 3610 0859 2500 0339 1450 0087

3000 0983 0032 0692 0013 0573 0008 3870 0982 268 0387 1550 0099

3500 1150 0043 0810 0018 0668 0011 4520 1330 3130 0526 1810 0134

4000 1310 0055 0923 0023 0764 0014 16rdquo 5160 1720 3570 0673 2070 0172

4500 1470 0068 1040 0029 0860 0018 0658 0009 4020 0853 2320 0214

5000 1640 0084 1150 0034 0955 0022 0731 0011 4470 1040 2580 0262

6000 1960 0118 1380 0049 1150 0031 0877 0016 18rdquo 5360 1470 3100 0373

7000 2290 0158 1610 0065 1340 0042 1020 0021 0808 0012 6250 2000 3610 0499

8000 2620 0204 1840 0085 1530 0054 1170 0027 0924 0015 7150 2590 4130 065

9000 2950 0256 2080 0107 1720 0067 1310 0033 1040 0019 4650 0816

10000 3280 0313 2310 0130 1910 0081 1460 0041 1150 0023 5160 0992

Q V Y V P V Y V Y V Y V Y V Y V Y [lm] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m]

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78 wwwpnr-nozzlescom CTG SH 07 EU

10 75 12 038 4 11 50

15 80 12 044 4 11 55

20 90 14 065 4 11 65

25 100 14 082 4 11 75

32 120 14 117 4 14 90

40 130 14 139 4 14 100

50 140 14 162 4 14 110

65 160 14 214 4 14 130

80 190 16 343 4 18 150

100 210 16 422 4 18 170

125 240 18 611 8 18 200

150 265 18 751 8 18 225

175 295 20 1020 8 18 255

200 320 20 1230 8 18 280

250 375 22 1850 12 18 335

300 440 22 2550 12 22 395

350 490 22 3180 12 22 445

400 540 22 3850 16 22 495

450 595 22 4700 16 22 550

500 645 24 6040 20 22 600

PN 6 (UNI 6091)

ND 6 (DIN 2527) DN Flange Holes

D t W N Oslash a

90 14 063 4 14 60

95 14 071 4 14 65

105 16 101 4 14 75

115 16 122 4 14 85

140 16 180 4 18 100

150 16 209 4 18 110

165 18 287 4 18 125

185 18 365 4 18 145

200 20 461 8 18 160

220 20 565 8 18 180

250 22 812 8 18 210

285 22 1050 8 22 240

315 24 1410 8 22 270

340 24 1620 12 22 295

405 28 2510 12 25 355

460 28 3520 12 25 410

520 30 4820 16 25 470

580 32 6350 16 30 525

640 32 7720 20 30 585

715 34 1020 20 33 650

PN 16 (UNI 6093)

ND 16 (DIN 2527) Dimensions Holes

D t W N Oslash a

ND 10 (DIN 2527) Dimensions Holes

D t W N Oslash a

90 14 063 4 14 60

95 14 071 4 14 65

105 16 101 4 14 75

115 16 122 4 14 85

140 16 180 4 18 100

150 16 209 4 18 110

165 18 287 4 18 125

185 18 365 4 18 145

200 20 461 4 18 160

220 20 565 8 18 180

250 22 812 8 18 210

285 22 1050 8 22 240

315 24 1410 8 22 270

340 24 1650 8 22 295

395 26 2410 12 22 350

445 26 3080 12 22 400

505 26 3960 16 22 460

565 26 4960 16 25 515

615 26 5860 20 25 565

670 28 7530 20 25 620

PN 10 (UNI 6092)

LegendaDN Nominal DiameterD Flange External Diametert Flange ThicknessW Flange WeightN Hole NumberOslash Hole Diametera Hole axis

PIPING Flange dimensionsPI

PIN

G

Blind flanges to DIN 2527

79wwwpnr-nozzlescomCTG SH 07 EU

LegendDN Nominal DiameterD Flange External Diametert Flange ThicknessW Flange WeightN Hole NumberOslash Hole Diametera Hole axis

12rsquorsquo 889 111 08 4 159 603

34rsquorsquo 984 127 09 6 159 698

1rsquorsquo 1079 143 10 4 159 794

114rsquorsquo 1175 159 13 4 159 889

112rsquorsquo 1270 175 14 4 159 984

2rsquorsquo 1524 190 18 4 190 1206

212rsquorsquo 1778 222 32 4 190 1397

3rsquorsquo 1905 238 41 4 190 1524

312rsquorsquo 2159 238 59 8 190 1778

4rsquorsquo 2286 238 77 8 190 1905

5rsquorsquo 2540 238 91 8 222 2159

6rsquorsquo 2794 254 118 8 222 2413

8rsquorsquo 3429 286 204 8 222 2984

10rsquorsquo 4064 302 318 12 254 3619

12rsquorsquo 4826 317 500 12 254 4318

14rsquorsquo 5334 349 600 12 286 4762

16rsquorsquo 5969 365 770 16 286 5397

18rsquorsquo 6350 397 950 16 317 5778

20rsquorsquo 6985 429 1230 20 317 6350

22rsquorsquo 7493 460 1510 20 349 6921

ANSI 150 lb DN Flange Holes

D t W N Oslash a

952 143 10 4 159 667

1175 159 14 4 190 825

1238 175 18 4 190 889

1333 206 27 4 190 984

1556 222 36 4 222 1143

1651 254 45 8 190 1270

190S 286 68 8 222 1492

209S 317 91 8 222 1683

2286 349 132 8 254 1841

2540 349 150 8 254 2000

2794 381 200 8 254 2349

3175 413 277 12 254 2699

3810 476 450 12 286 3302

4445 540 700 16 317 3873

5207 571 103 16 349 4508

5842 603 141 20 349 5143

6477 635 181 20 381 5715

7112 667 228 24 381 6286

7747 698 282 24 413 6858

8382 730 311 24 444 7429

ANSI 400 lb Dimensions Holes

D t W N Oslash a

ANSI 300 lb Dimensions Holes

D t W N Oslash a

952 143 10 4 159 667

1175 159 14 4 190 825

1238 175 18 4 190 889

1333 190 27 4 190 984

1556 206 32 4 220 1143

1651 222 36 8 190 1270

1905 254 54 8 222 1492

2095 286 73 8 222 1683

2286 302 95 8 222 1841

2540 317 122 8 222 2000

2794 349 159 8 222 2349

3175 365 227 12 222 2699

3810 413 370 12 254 3302

4445 476 580 16 286 3873

5207 508 840 16 317 4508

5842 540 1070 20 317 5143

6477 571 1390 20 349 5715

7112 603 3900 24 349 6286

7747 635 2230 24 349 6858

8382 667 2700 24 413 7429

PIPING Flange dimensions

PIPI

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flanges to ANSI norms

80 wwwpnr-nozzlescom CTG SH 07 EU

PIPI

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Sieves are used both for determining the particle size distribution of a granular material and to filter solid particles in a liquid Normally the sieve is made with a fabric whose characteristic dimensions areL is the Opening Width (free passage)D is the Diameter of the wireP is the Pitch of the wireS is the Thickness of the fabricTo classify particle sizes there is some Sieve Series according to specific standardsthe most known are Tyler Sieve Series US Sieve Series UK Sieve SerieshellipThe Tyler mesh size indicates exactly the number of openings per linear inch of mesh

L[microm]

TYLER Sieve[Mesh No]

ASTM E11 Sieve[Mesh No]

BS 410 Sieve[Mesh No]

DIN 4188 Sieve[mm]

5 2500 2500 0005

10 1250 1250 0010

15 800 800 0015

20 625 635 625 0020

22 0022

25 500 500 500 0025

28 0028

32 na 450 440 0032

36 0036

38 400 400 400

40 0040

45 325 325 350 0045

50 0050

53 270 270 300

56 0056

63 250 230 240 0063

71 0071

75 200 200 200

80 0080

90 170 170 170 0090

100 0100

106 150 140 150

112 0112

125 115 120 120 0125

140 0140

150 100 100 100

160 0160

180 80 80 85 0180

200 0200

In the german standard (DIN norm 4188) the Opening Width (L) is given in millimeters

PIPING Sieve size conversion chartPI

PIN

G

81wwwpnr-nozzlescomCTG SH 07 EU

L[microm]

TYLER Sieve[Mesh No]

ASTM E11 Sieve[Mesh No]

BS 410 Sieve[Mesh No]

DIN 4188 Sieve[mm]

212 65 70 72

250 60 60 60 0250

280 0280

300 48 50 52

315 0315

355 42 45 44 0355

400 0400

425 35 40 36

450 0450

500 32 35 30 0500

560 0560

600 28 30 25

630 0630

710 24 25 22 0710

800 0800

850 20 20 18

900 0900

1000 16 18 16 1000

1120 1120

1180 14 16 14

1250 1250

1400 12 14 12 1400

1600 1600

1700 10 12 10

1800 1800

2000 9 10 8 2000

2240 2240

2360 8 8 7

2500 2500

2800 7 7 6 2800

3150 3150

3350 6 6 5

3550 3550

4000 5 5 4 4000

4500 4500

4750 4 4 35

5000 5000

5600 35 35 3

6700 3 0265 in 1

8000 25 516 in na

Applicable standards areISO 565 (1987) ISO 3310 (1999) ASTM E 11-70 (1995)DIN 4188 (1977) BS 410 (1986) AFNOR NFX11-501 (1987)

Legend Q Water Flow Rate V Velocity P Pressure drop Pressure drop in bar per 100 meters of straight pipe (water at ambient temperature)

PIPING Sieve size conversion chart

PIPI

NG

Besides its main range of nozzles for industrial applications PNR manufactures a wide range of complementary products and systems to optimize the use of spray jets and fluids control in most of the modern industrial processes

PNR PRODUCT RANGE

CTG AC

CTG LS

CTG UG

CTG AZ

Complementary Products andAssembly FittingsA complete line of nipples clamps swivel joints and everything that helps you to assemble align and service your spraying systems quickly and easilyAir blowers mixing eductors filters clean-ing guns and lances hose reels steam heaters pressure tanks quick couplings to help you build up a professional system upgraded to the latest standards

Tank washing systemsA complete range from simple fixed washing heads to the two-axis heads from mushroom nozzles to fluid driven reaction heads up to the motor driven washing heads equipped with a pneu-matic or electric motorAll for the inside cleaning of industrial tanks according to the latest technology accessories included

Spray nozzles for industrial applicationsOne of the world most complete lines of nozzles for numberless industrial appli-cations Nozzles with a wide openings range various types of vanes several spray patterns anti-clog design available in small and big dimensions and made in many food-grade materials like PFTE and Stainless Steel 316L with threaded and flanged connections

Air assisted atomizersUltrasonic classic and automatic atomiz-ers for the finest atomization in any insus-trial process High quality machining and strict quality control ensure your systems top professional resultsProgramming and control panels for an easy assembly of complete humidification systems

CTG SP

CTG PM

CTG SW

CTG LN

Spraydry nozzlesAir assisted or hydraulic high pressure ato-mizers made in high-quality metal alloys or tungsten carbideA complete line of nozzles for the moder-nization of existing facilities at competitive prices To ensure highly accurate results and a long service life these nozzles are manufactured with the finest materials and technologically advanced machines

Paper mill productsA line of products specifically designed for perfect results on paper mill machines including disc nozzles patented for self-cleaning filters flat jet nozzles with orifices in sapphire ruby and ceramic oscillating tubes equipped with a computer driven motor

Steelwork nozzlesA complete line of nozzles for steelwork applications including continuous casting air atomizers and conventional nozzles descaling nozzles for high pressure sys-tems dovetail tips for cylinders cooling and high capacity flanged nozzles for coke quenching

Gas cooling lancesSpillback or air assited lances for gas coo-ling in steelworks cement plants and other industrial applicationsWe can supply spare parts upgrade your plant and even supply a complete PLC driven system to enhance the towers per-formances to the highest efficiency level allowed by today technology

wwwpnr-nozzlescomCTG SH 07 EU

CTG SH 07 EUwwwpnr-nozzlescom

STAM

PATO

IN E

U 09

09

copy B

ellamp

Tany

Our products are distributed through

We are also represented in

PNR AmericaPNR Asia

PNR BalticPNR Benelux

PNR ChinaPNR Czech Republic

PNR DeutschlandPNR France

PNR ItaliaPNR Mexico

PNR UK

ArgentinaAustraliaAustriaBrazil

BulgariaCanada

ChileCroatia

DenmarkFinlandGreece

IndiaIndonesia

IranIrelandKorea

MalaysiaNorway

New ZealandPakistan

PhilippinesPoland

Portugal

RumeniaRussiaSerbia

SingaporeSlovenja

SpainSouth Africa

SwedenTaiwanTurkey

Venezuela

Page 3: SPRAY CTG SH 07 EU ENGINEERING HANDBOOK

3wwwpnr-nozzlescomCTG SH 07 EU 3

Foreword

Along many years PNR engineers have been involved with Customers to find out the appropriate solution to specific application problems in numberless different industriesThis continuous cooperation has allowed us to gather a large quantity of information regarding practical spray nozzles applications which we make available every day to our CustomersWe like to thank alI our Customers for their past cooperation and for the invaluable help they have given us in designing and manufacturing an always more complete and efficient range of spray nozzles and spraying systemsTo make this information readily available and improve our service we have now decided to gather and organize it within a manualWe hope the reader will appreciate our work and welcome any suggestion or addition which may lead to improve and complete this manual

GENERAL INFORMATIONInternational system of units 4Prefix tables for SI units 5Conversion table American units to SI units 5Conversion tables temperature scales 6Metric and decimal equivalents of fractions of an inch 7

GENERAL INFORMATION

INTR

ODUC

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Description

The INTERNATIONAL SYSTEM OF UNITS sometimes called SI has been defined by the International Standards Organization (ISO) and is based upon metric units The following notes include most units which are likely to be used in handing of fluids The system consists of nine base units and supplementary units which are coherently derived from them The coherence con-sists in the fact that the product or the quotient of any two unit quantities in the system result in another unit quantity Because of the world wide trend to use this modern metric system we are providing in the following the conversion constants for the most useful units

Base Units and derived units

The SI has defined the following base unit

GENE

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INFO

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Ndeg QUANTITY UNIT NAME UNIT SYMBOL

1 Length meter m

2 Mass kilogram kg

3 Time second s

4 Thermodynamic temperature Kelvin K

5 Molecular substance mole mol

6 Electric current Ampere A

7 Light intensity candela cd

8 Plane angle radiante rad

9 Solid angle steradian sr

Out of these base units many other have been derived the most interesting for our purposes being listed below

Ndeg QUANTITY UNIT NAME UNIT SYMBOL EQUIVALENCES

10 Area square meter m2

11 Volume cubic meter m3

12 Density kilogram per cubic meter Kgm3

13 Velocity meter per second ms

14 Acceleration meter per second squared ms2

15 Angular velocity radian per second rad s

16 Frequency Hertz Hz Hz = cicli s

17 Force Newton N N = kg ms2

18 Pressure Pascal Pa Pa = Nm2

19 Momentum kilogram meter per second Kg ms

20 Energy Joule J J = N m

21 Power Watt W W = Js

22 Moment of force Newton meter N m

23 Kinematic viscosity square meter per second m2s

24 Dynamic Viscosity Pascal second Pa s

25 Thermal conductivity Watt per meter Kelvin W (m K)

GENERAL INFORMATION International system of units

5wwwpnr-nozzlescomCTG SH 07 EU

GENE

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AMERICAN UNIT CONVERSION FACTOR SI UNITPound masscubic feet 16018 kilogramscubic meterGallons per minute 3785 liters per minute (lpm)US Gallon 3785 liter (I)Pound force 4448 Newton (N)BTU (British Thermal Unit) 1055 Joule (J)BTU per hour 02931 Watt (W)BTU per pounddeg F 4184 Joule (kg K)mil 254 Micrometer (micron)Inches 254 millimeters (mm)Foot 03048 meter (m)Horsepower 0746 kilowatt (kW)Pounds per square inch 00689 bar (1 bar = 100 kPa)BTU per pound 2326 Joule per kgLbs per gallon 01198 kg per liter (kgl)Square inch 64516 square centimeter (cm2)Square foot 00929 square meter (m2)Acre 04047 hectares (ha)Foot per second 03048 meters per second (msec)Foot per minute 03048 meters per minute (mmin)Miles per hours 1609 kilometers per hour (kmh)Knots 1852 kilometers per hour (kmh)Cubic foot 00283 cubic meter (m3)Cubic inch 16387 cubic centimeter (cm3)Pound 04536 kilogram (kg)Ton 090272 metric ton (t)

QUANTITYDENSITYFLOW RATEFLUID VOLUMEFORCEHEATHEAT TRANSFERSPECIFIC HEAT CAPACITYLENGTHLENGTHLENGTHPOWERPRESSURECALORIC VALUE ENTALPYSPECIFIC WEIGHTSURFACESURFACESURFACEVELOCITYVELOCITYVELOCITYVELOCITYVOLUMEVOLUMEWEIGHTWEIGHT

Multiply American Units on the left (by the conversion factor) to obtain SI Units on the right Divide SI Units on the right (by the conversion factor) to obtain American Units on the left

GENERAL INFORMATION Prefix tables for SI units

Prefixes

SI units can be indicated together with a prefix to easily indicate very large or very small numbersAs an example visible light has a wave length of approximately 00000005 m (meters) which can be more easily written as 500 nm (nanometers)Please note it is not allowed to use prefixes together you cannot write 10000 m = 1da-km

10n Prefix Symbol Denomination Decimal equivalent1024 yotta Y 1 000 000 000 000 000 000 000 0001021 zetta Z 1 000 000 000 000 000 000 0001018 exa E 1 000 000 000 000 000 0001015 peta P 1 000 000 000 000 0001012 tera T 1 000 000 000 000109 giga G 1 000 000 000106 mega M Million 1 000 000103 kilo k Thousand 1 000102 etto h Hundred 10010 deca da Ten 1010minus1 deci d Tenth 0110minus2 centi c Hundredth 00110minus3 milli m Thousandth 000110minus6 micro micro Millionth 0000 00110minus9 nano n 0000 000 00110minus12 pico p 0000 000 000 00110minus15 femto f 0000 000 000 000 00110minus18 atto a 0000 000 000 000 000 00110minus21 zepto z 0000 000 000 000 000 000 00110minus24 yocto y 0000 000 000 000 000 000 000 001

GENERAL INFORMATION Conversion table American units to Si units

NoteBecause of discrepancies between some denominations in English and American we only mention the commonly used deno-minations

6 wwwpnr-nozzlescom CTG SH 07 EU

There are 4 principal types of temperature scales used for indicate the temperature CENTIGRADE CELSIUS FAHRENHEIT KELVIN and RANKINE Kelvin and Celsius scales are used in Europe Rankine Fahrenheit are used in Anglo-Saxons countries

MP = water melting pointBP = water boiling point

GENE

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degC Centigrade 0 100 0 and 100 are arbitrarily placed at the freezing point andboiling point of water

degF Fahrenheit 32 212

0degF is the stabilized temperature when equal amounts ofice water and salt are mixed 96degF is the temperatureldquowhen the thermometer is held in the mouth or under thearmpit of a living man in good healthrdquo

degK Kelvin 27316 37316Based upon the definitions of the Centigrade scale and theexperimental evidence that absolute zero is ndash27316deg Cand that is an international standard temperature point

degR Rankine 49167 67167 Based upon the definitions of the Fahrenheit scale andthe experimental evidence that absolute zero is ndash27316deg C

degC degF43 1094

44 1112

45 113

46 1148

47 1166

48 1184

49 1202

50 122

51 1238

52 1256

53 1274

54 1292

55 131

56 1328

57 1346

58 1364

59 1382

60 140

61 1418

62 1436

63 1454

64 1472

65 149

66 1508

degC degF67 1526

68 1544

69 1562

70 158

71 1598

72 1616

73 1634

74 1652

75 167

76 1688

77 1706

78 1724

79 1742

80 176

81 1778

82 1796

83 1814

84 1832

85 185

86 1868

87 1886

88 1904

89 1922

90 194

degC degF91 1958

92 1976

93 1994

94 2012

95 203

96 2048

97 2066

98 2084

99 2102

100 212

105 221

110 230

115 239

120 248

125 257

130 266

135 275

140 284

145 293

150 302

160 320

170 338

180 356

190 374

degC degF19 662

20 68

21 698

22 716

23 734

24 752

25 77

26 788

27 806

28 824

29 842

30 86

31 878

32 896

33 914

34 932

35 95

36 968

37 986

38 1004

39 1022

40 104

41 1058

42 1076

degC degF-10 14

-8 176

-6 212

-4 248

-2 284

0 32

1 338

2 356

3 374

4 392

5 41

6 428

7 446

8 464

9 482

10 50

11 518

12 536

13 554

14 572

15 59

16 608

17 626

18 644

CONVERSION FORMULAE TABLE

CELSIUS FAHRENHEIT KELVIN RANKINE

degC= -

degF - 32 K - 27316

R - 27316

18 18

degF= 18 degC + 32 18K - 45969 R - 45969

K= degC + 27316

degF - 32 + 27316

- R

18 18

degR= 18 (degC + 27316) degF + 45967 18K -

GENERAL INFORMATION Conversion table temperature scales

7wwwpnr-nozzlescomCTG SH 07 EU

GENE

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GENERAL INFORMATION Metric and decimal equivalents of fractions of an inch

5wwwpnr-nozzlescom

METRIC AND DECIMAL EQUIVALENTS OF FRACTIONS OF ONE INCH

mm FRACTIONS OF ONE INCH INCHES

03969 164 0015625079375 132 00312511906 364 00468715875 116 00625 19844 564 0078125238125 332 009375 27781 764 0109375 31750 18 012535719 964 014062396875 532 01562543656 1164 017187547625 316 1364 0187551594 0203125555625 732 02187559531 1564 023437563500 14 02567469 1764 0265625 714375 932 02812575406 1964 029687 79375 516 0312583344 2164 0328125873125 1132 03437591281 2364 035937595250 38 037599219 2564 0390625

1031875 1332 040625107156 2764 042187111125 716 04375115094 2964 04531251190625 1532 046875123031 3164 0484375127000 12 05130969 3364 05156251349375 1732 053125138906 3564 054687142875 916 05625146844 3764 05781251508125 1932 059375154781 3964 0609375 158750 58 0625 162719 4164 064062 1666875 2132 065625 170656 4364 0671875 174625 1116 06875 178594 4564 0703125 1825625 2332 071875 186531 4764 0734375 190500 34 075194469 4964 07656251984375 2532 078125202406 5164 0796875206375 1316 08125210344 5364 08281252143125 2732 084375218280 5564 085937222250 78 0875226219 5764 08906252301875 2932 090625 234156 5964 0921875238125 1516 09375242094 6164 09531252460625 3132 096875250031 6364 0984375254000 1 10

INT

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5wwwpnr-nozzlescom

METRIC AND DECIMAL EQUIVALENTS OF FRACTIONS OF ONE INCH

mm FRACTIONS OF ONE INCH INCHES

03969 164 0015625079375 132 00312511906 364 00468715875 116 00625 19844 564 0078125238125 332 009375 27781 764 0109375 31750 18 012535719 964 014062396875 532 01562543656 1164 017187547625 316 1364 0187551594 0203125555625 732 02187559531 1564 023437563500 14 02567469 1764 0265625 714375 932 02812575406 1964 029687 79375 516 0312583344 2164 0328125873125 1132 03437591281 2364 035937595250 38 037599219 2564 0390625

1031875 1332 040625107156 2764 042187111125 716 04375115094 2964 04531251190625 1532 046875123031 3164 0484375127000 12 05130969 3364 05156251349375 1732 053125138906 3564 054687142875 916 05625146844 3764 05781251508125 1932 059375154781 3964 0609375 158750 58 0625 162719 4164 064062 1666875 2132 065625 170656 4364 0671875 174625 1116 06875 178594 4564 0703125 1825625 2332 071875 186531 4764 0734375 190500 34 075194469 4964 07656251984375 2532 078125202406 5164 0796875206375 1316 08125210344 5364 08281252143125 2732 084375218280 5564 085937222250 78 0875226219 5764 08906252301875 2932 090625 234156 5964 0921875238125 1516 09375242094 6164 09531252460625 3132 096875250031 6364 0984375254000 1 10

INT

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5wwwpnr-nozzlescom

METRIC AND DECIMAL EQUIVALENTS OF FRACTIONS OF ONE INCH

mm FRACTIONS OF ONE INCH INCHES

03969 164 0015625079375 132 00312511906 364 00468715875 116 00625 19844 564 0078125238125 332 009375 27781 764 0109375 31750 18 012535719 964 014062396875 532 01562543656 1164 017187547625 316 1364 0187551594 0203125555625 732 02187559531 1564 023437563500 14 02567469 1764 0265625 714375 932 02812575406 1964 029687 79375 516 0312583344 2164 0328125873125 1132 03437591281 2364 035937595250 38 037599219 2564 0390625

1031875 1332 040625107156 2764 042187111125 716 04375115094 2964 04531251190625 1532 046875123031 3164 0484375127000 12 05130969 3364 05156251349375 1732 053125138906 3564 054687142875 916 05625146844 3764 05781251508125 1932 059375154781 3964 0609375 158750 58 0625 162719 4164 064062 1666875 2132 065625 170656 4364 0671875 174625 1116 06875 178594 4564 0703125 1825625 2332 071875 186531 4764 0734375 190500 34 075194469 4964 07656251984375 2532 078125202406 5164 0796875206375 1316 08125210344 5364 08281252143125 2732 084375218280 5564 085937222250 78 0875226219 5764 08906252301875 2932 090625 234156 5964 0921875238125 1516 09375242094 6164 09531252460625 3132 096875250031 6364 0984375254000 1 10

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mm FRACTIONS OF ONE INCH INCHES

8 wwwpnr-nozzlescom CTG SH 07 EU

LIQUID SPRAY AND SPRAY NOZZLESLiquid spray 9Spray nozzle types 11Spray nozzle coding 13Computerized fluid dynamics 14Spray generation 15Droplet spectrum 16Nozzle flow rate 19Spray angle 21Spray distribution 23Influence of liquid viscosity 27Influence of liquid specific gravity 29Jet impact 30Pressure drop through a nozzle 32

LIQUID SPRAY AND SPRAY NOZZLESLI

QUID

SPR

AYAN

D SP

RAY

NOZZ

LES

A nozzle is a device which converts the energy from a fluid into velocity of the spray dropletsApplications in many industrial processes are numberless with spray nozzles being very often a critical component in determining the final quality of the product or the efficiency of the processFor this reason the available nozzle range types for industrial applications can be found in PNR nozzle catalogue as well as a concise but complete information about the most important parameters which can give a technical definition of a spray and its qualityWe have grouped in the following the most useful formulas for designing a spray system showing the influence of the different factors which can affect the process of sprayingMore information about the working life of a nozzle and the best suited material for a given purpose can be found at page 17 of this publication AlI the following data when not otherwise specified refer to spraying water at 15deg C

9wwwpnr-nozzlescomCTG SH 07 EU

LIQUID SPRAY AND SPRAY NOZZLES Liquid spray

LIQU

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LIQUID SPRAY AS A PROCESS

The process of spraying a liquid can be described as composed of two phases namely

1 Breaking up the liquid into separated drops2 Directing the liquid drops onto a surface or an object to achieve the desired result

The above two phases are normally performed by the types of nozzles being used in industrial processes at the same time by means of different techniques which shall be illustrated in the followingThe continuous progress in the manufacturing techniques in recent years has requested the nozzle manufacturer to make available to the industry an always more complete range of spray nozzle types to perform the different processes in a more efficient wayIt is the interest of the engineer using spray nozzles in manufacturing processes to become familiar with the different types of nozzles which are available today and with their individual characteristics in order to be able to choose the nozzle which performs with the highest possible efficiency on a given application

Spraying a liquid through a spray nozzle can serve different purposes among which the most important are the following

1 Cooling by means of heat transfer between the product itself and the liquid running on its surface2 Washing where the water directed onto the product takes away dirt or undesired substances from the product surface3 Humidifying with sprays carrying very little liquid quantities to the product surfaceinto a chamber or into a room4 Metering the desired liquid quantity in a unit of time into the product being handled5 Applying a product on a surface as in the case of spray painting or surface pre-treatment before painting6 Increasing the liquid surface to speed up heat transfer processes or chemical reactions and many others in numerous applications throughout modern industry

It is self evident that the best results for every application are only obtained when the right choices in terms of nozzle type flow value spray angle drop dimensions and nozzle material are madeThe purpose of the following pages is to give the reader the basic knowledge which is needed to properly select a spray nozzle for a given application

Spray nozzles

a spray nozzle is a device which makes use of the pressure energy of a liquid to increase its speed through an orifice and break it into dropsIts performances can be identified and described precisely so that the design engineer can specify exactly the spray nozzle required for a given process

The relevant characteristics which identify the performances of a nozzle are the following

1 The liquid flow delivered as a function of the nozzle feed pressure2 The opening angle of the produced spray3 The nozzle efficiency as the ratio between the energy of the spray and the energy used by the nozzle4 The evenness of the flow distribution over the target5 The droplet size distribution of the spray6 The jet impact of the spray

The above characteristics will be discussed in the following pages in connection with the different nozzle types

10 wwwpnr-nozzlescom CTG SH 07 EU

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TECHNIQUES FOR SPRAY PRODUCTION

Many different techniques can be used to produce a spray and most of them are used today for nozzles to be applied in industrial processes Based on the different techniques the following nozzle types can be used in industrial applications to generate a liquid spray

1 Pressure nozzlesThis is the simplest type of nozzles where an orifice is opened into a chamber where the liquid to be sprayed is fed under pressure A spray is produced through the orifice with spray pattern flow rate and spray angle depending upon the orifice edge profile and the design of the inside pressure chamberTypical pressure nozzles are the flat jet nozzles series GA J GX and GY

2 Turbulence nozzlesIn these nozzles the liquid moving towards the chamber preceding the orifice is given a rotational speed component so as to open up in a conical shape as soon as it leaves the orifice edge because of centrifugal force Based on the nozzle design and the technique used to generate the rotational speed the drops produced can be confined to the cone outer surface (hollow cone spray) or be evenly distributed to fill the entire volume of the cone (full cone spray)

3 Impact nozzlesHere the desired spray shape is obtained producing an impact of the liquid jet onto a properly designed surface The liquid jet is subsequently changed into a fluid lamina and then broken into drops with the desired spray pattern after leaving the nozzle edge

4 Air assisted atomizersFine and very fine sprays can be obtained by means of air assisted atomizers working upon various different principles More detailed information about air assisted atomizing can be found in our Catalogue Air assisted atomizers (ordering code CTG AZ18)

LIQUID SPRAY AND SPRAY NOZZLES Liquid spray

11wwwpnr-nozzlescomCTG SH 07 EU

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FULL CONE PATTERN

In a full cone spray the droplets are distributed into a volume which is limited by a cone having its origin point at the nozzle orifice Such spray pattern is commonly used in a large variety of industrial processes since it is the one which allows to distribute in an even way the water flow onto a surface the full cone spray pattern is therefore useful as a typical example to evenly spray cooling liquid on a still surface Another typical use is to distribute liquid droplets within a certain volume like for example evenly distributing water droplets in the inside volume of a cooling tower

Because of the wide number of processes performed by means of full cone nozzles the original shape has evolved into a range of specialised types where the full cone spray pattern or a pattern similar to a full cone one is obtained by different techniques

Standard full cone (turbulence nozzle)These nozzles use a specially shaped vane placed at the nozzle inlet to give a rotational speed to the fluid flowing through the nozzleBecause of the rotational speed of the fluid water exiting the nozzle orifice is subjected to centrifu-gal force and opens up in the shape of a full coneThe extent of the angle of the cone is a function of both exit speed (created from the inlet pressure) and the internal design of the nozzle It can vary in practice from 15deg to 120deg

These nozzles can be also produced as square full cone nozzles where the square shape of the pyramidal spray is obtained by a special design of the outlet orificeTwo important details have to be noted from the system designer when using these type of noz-zles

the spray angle is measured on the side of the square sectionbullthe square section of the spray rotates within the distance from the nozzle orifice to the bulltarget area

Spiral full cone (deflection nozzle)This is not properly a full cone but rather a continuous liquid curtain evolving with the shape of a spiral inside a conical volume The disadvantage of a scarcely even distribution is compensated by an exceptionally good resistance to plugging which makes this nozzle the best choice in those applications where safety or system reliability are the prime concern eg fire fighting systems

Multiple full cone (turbulence nozzle air atomizer)This spray pattern is used in two cases that is

1 When a wide spray angle is to be reached with nozzles which inherently can only produce a narrow one or in such cases where small size droplets and rather high capacities are required Therefore several nozzles are grouped in a cluster with different spray directions the resulting spray pattern occurs from the additional group of single nozzle sprays and the droplet size of the spray remains the same as one of single nozzle It must be noted that a smaller nozzle will normally make smaller drops as compared to a larger size nozzle of the same type operating under the same conditions

2 When it is necessary to obtain a wide angle jet using nozzles which inherently deliver a lim-ited angle spray In the case of a wide angle air atomizer for example the droplet distribution is obviously not homogeneous and the result is rather a number of small angle sprays with different directions but still the liquid is atomized towards all the parts of the volume to be treated

LIQUID SPRAY AND SPRAY NOZZLES Spray nozzle types

Standard full cone

Spiral full cone

Multiple full cone

12 wwwpnr-nozzlescom CTG SH 07 EU

FLAT JET SPRAY PATTERN

In a flat jet spray the liquid droplets are sprayed in the shape of a flat liquid layer with different thickness according to the principle used to generate the spray A flat jet spray nozzle serves the purpose of spraying onto a surface or an object moving in a transverse direction with respect to the one of the jet surface a typical example being the nozzles in a car washing tunnel The vast majority of flat spray nozzles used in the industry work according to one of the following principles

In line flat jet (pressure nozzle)This is the general purpose flat jet nozzle where the liquid enters the nozzle in line with the axis length and is fed to a pressure chamber from where it is ejected through the nozzle orifice Flow value and spray angle are determined respectively from the orifice cross section and the orifice edge profile

In line straight jet (pressure nozzle)These nozzles can be considered a special kind of flat jet nozzle with naught degree spray angle They are designed to produce a sharp stable stream with powerful impact on a given point and serve normally to perform cleaning processes or to cut soft materials

Spoon flat jet (deflection nozzle)In this type of nozzle the liquid is fed under pressure to a round outlet orifice and then deflected onto a smooth profiled surface so as to assume a flat jet shape This sophisticated design is of advantage since it offers a stronger jet impact using the same feed pressureHigher efficiency comes from the very little energy required to just change the direction of the liquid flow this being the only energy required to generate the flat jet

HOLLOW CONE SPRAY PATTERN

A hollow cone spray pattern consists of droplets concentrated onto the outer surface of a conical shape volume with no droplets contained in the inside of the conical jet shape These nozzles are normally used for smoke washing or gas cooling applications in several industrial processes

Hollow cone (turbulence nozzle)These nozzles use a tangential injection of liquid into a whirling chamber to generate centrifugal forces which break up the liquid vein as soon as it leaves the orifice Precisely designed orifice profiles making use of the Coanda effect provides the ability to obtain very large spray angles

Hollow cone (deflection nozzle)A hollow cone can also be obtained taking a liquid flow to change direction onto a properly designed surface in order to break the liquid into droplets and distributing them as a hollow cone spray patternThis kind of nozzle is mainly used for applications in dust control and fire fighting systems

LIQUID SPRAY AND SPRAY NOZZLES Spray nozzle typesLI

QUID

SPR

AYAN

D SP

RAY

NOZZ

LES

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PNR CODING SYSTEM

As any other industrial product spray nozzles need to be precisely identified by means of a code in order to avoid mistakesPNR coding system has been designed with the following requirements in mind

Codes must be easily processed by a computer in ascending orderbullCodes must describe completely the product without any need for additional descriptionbullCodes must show to the user the basic specifications of the nozzle in order to ease the search in the cataloguebull

We have therefore determined our coding system described as follows

LIQUID SPRAY AND SPRAY NOZZLES Spray nozzle coding

LIQU

ID S

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AND

SPRA

Y NO

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S

AA U X YB312 305

Thread type or other connection

Special features

Nozzle material code (see below)

The three digits give the nozzle capacity in lpm at 3 bar according to rank value

Rank of flow value see table below

Nozzle spray angle see table below

Nozzle type as described in the catalogue pages shown in ascending order

Nozzle tables report on a blue background the nominal flow value measured at 30 barFlow values at different pressures have been calculated

These codes serve as an indication onlyBased on different types of nozzles their significance can occasionally be different

CAPACITY RANK

Rank Flow digits Actual flow (lmin)

0 0 490 049

1 1 490 490

2 2 490 490

3 3 490 490

4 4 490 4900

SOME SPRAY ANGLE CODES (DEGREES)

A = 0 L = 40 T = 80

B = 15 M = 45 U = 90

C = 20 N = 50 J = 110

D = 25 Q = 60 W = 120

F = 30 R = 65 Y = 130

H = 35 S = 75 Z = 180

A1 Carbon steel D6 Glassfibre reinforced PP L2 Incolloy 825

A2 High speed steel D7 High density polyethilene L8 Hastelloy C276

A8 Zinc coated steel D8 Polyvinylidenefluoride (PVDF) P6 Acr But Styrene (ABS)

A9 Nickel coated steel E0 EPDM P8 EPDM 40 Shore

B1 AISI 303 Stainless steel E1 Polytetrafluorethylene (PTFE) T1 Brass

B2 AISI 304 Stainless steel E2 PTFE (25 glassfibers) T2 Brass chrome plated

B21 AISI 304 L Stainless steel E31 Acetalic resin (POM) T3 Copper

B3 AISI 316 Stainless steel E7 Viton T5 Bronze

B31 AISI 316 L Stainless steel E8 Synthetic rubber (NBR) T8 Brass nickel plated

C2 AISI 416 Stainless steel hardened F5 Ceramic T81 Brass electroless nickel plated

D1 Polyvinylchloride (PVC) F31 Ruby insert 303 body V1 Aluminum

D2 Polypropylene (PP) G1 Cast iron V7 Aluminum electroless n plated

d3 Polyamide (PA) H1 Titanium

D5 Talcum filled Polypropylene L1 Monel 400

NOZZLE MATERIAL CODES

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LIQUID SPRAY AND SPRAY NOZZLES Computerized fluid dynamics

The customers demand for an always higher efficiency requires to use not only the best tooling but in addition control instruments and design methods always more sophisticated like for example new software for obtaining the velocity distribution of a fluid flowing through a conduit

These software programs require that the geometry of the inner con-duit to be geometrically defined and in addition the process conditions ( pressure temperature fluid capacity ) and the fluid properties ( specific weight viscosity ) to be Introduced

Based on the above data it is pos-sible to obtain a very precise dis-tribution for the velocity value in each single point of the conduit both under numeric form and flow diagramsThese Information make it possi-ble as an example to minimize the flow turbulence and consequently to Increase the nozzle efficiency through an increase in the fluid exit velocityThis is of basic Importance for some kind of nozzles for example those nozzles required to supply an high impact jet when performing descal-ing processes in a rolling millBy trial and error it is also possible to eliminate problems like jet Instability or cavitation

The overall process efficiency in the flow path before the nozzle can also be considered which often results into the design of geometry modifi-cation or the Introduction of special flow improving profiles along the conduit

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S

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S

The diagram on the right shows the idealization of the process generating the droplets while the water jet exiting the nozzle is breaking up The theoretical model whose exactitude seems to be confirmed by scientific research considers that the liquid flowing through the nozzle and past the orifice edge evolves into a liquid lamina This lamina because of instability induced by aerodynamic forces breaks up first into elongated ligaments more or less cylindrical and later into droplets

Taking the above process as a guideline one can easily appreciate that the average droplet diameter is some what related to several factors like

1 The thickness of the lamina itself2 The evenness of the lamina 3 A steady flow and break up process

For what has been said above and limited to hydraulic nozzles the system designer looking for fine droplet sprays should consider that the following results can be expected

Impact nozzles best

Centrifugal hollow cone nozzles multiple full cone nozzles good

Turbulence nozzles fair

Centrifugal Vaneless full cones worst

The above choice is obviously based on the droplet generation process which changes from one nozzle type to another and allows to forecast which type is best fro the applicationAn additional consideration of interest is that the expected droplet size changes for the same type of nozzle with the nozzle size it is possible to generate smaller drops spraying the same water quantity at the same pressure using a greater number of smaller nozzles

In cases where energy requirements are not a problem or where a specified small droplet diameter is required the smal-lest droplets can be obtained by means of an air assisted atomizerHere the shear action of a high speed compressed air flow is used with several different techniques to obtain a value for SMD (Sauter Mean Diameter) of 50 microns and less

LIQUID SPRAY AND SPRAY NOZZLES Spray generation

Theoretical Mechanism of droplet generation

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SLIQUID SPRAY AND SPRAY NOZZLES Droplet spectrum

The atomization of a liquid by means of a compressible fluid like air steam or a gas is defined pneumatic two-phase or twin-fluid atomization Many industrial processes require the availability of finely atomized droplets and the techniques to produce atomized jets have been largely improved in the recent years In addition more sophisticated process techniques have incre-ased the demand for a precise definition about the characteristics of the spray and are now available to the design engineer Since many years PNR can supply upon request complete documentation containing test reports about the more interesting and additional information which are described below for all PNR products

Laser Interpherometer Test (By Pdpa)

PNR droplet size test reports are performed by means of a Laser Interpherometer (Phase Doppler Particle Analyzer) where two laser beams cross in a given point of the spray and define a test probe area Droplet flying through the probe area cause a light scatter which is picked up by the instrument receiver and processed through a computer in order to obtain relevant information about the spray characteristics

Report information

Report information is made of data printed on three pages where the first page contains the most interesting data which make possible to base process calculations upon precise data about spraying degrees process efficiency and jet behavior in operational ambiance These pages contain the Sauter Mean Diameter value whose knowledge is of special importance in heat exchange calculations about evaporative gas cooling processes since it gives the possibility of evaluating the exchange surface obtained by atomizing for a given liquid volume

The upper picture at page 18 referring to atomizing water by means compressed air shows two following histograms

bull Distribution curve of droplet diameter (micron)

bull Distribution curve of droplet velocities (mps)

and the below described values

bull Arithmetic Mean Diameter (D10)

bull Surface Mean Diameter (D20)

bull Volume Mean Diameter (D30)

bull Sauter Mean Diameter (D32)

ARITHMETIC MEAN DIAMETERThis is a diameter value which multiplied by the local num-ber of droplets in the sample equals the addition of alI droplets diameters

SURFACE MEAN DIAMETERThis is the diameter of such a droplet whose surface mul-tiplied by the total droplets number equals the sum of alI droplets surfaces

VOLUME MEAN DIAMETERThis is the diameter of such a droplet whose volume mul-tiplied by the total droplets number equals the sum of all droplets volumes

SAUTER MEAN DIAMETERThis is the diameter of such a droplet whose volumearea ratio equals the ratio between the sum of alI droplet volu-mes divided by the sum of alI droplet surfaces

D10 = Σ i ni di

Σ i ni

D20 = Σ i ni di

2

Σ i ni

D30 = Σ i ni di

3

Σ i ni

D32 = Σ i ni di

3

Σ i di

2

3

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AttemptsDroplet number crossing probe area during test time This includes both validated and not validated droplet

Correct Count Criteria A mathematic correction is applied to validate droplets which cross Probe Area in a peripheral belt or to droplets without a perfect spherical shape so that alI validated droplets parameters are homogeneous (This correction is necessary so that there is direct proportionally between laser beam phase and droplet number diameter)

Number Density It is the number of droplets passing through probe area within test time

Probe areaThis is the area where the two laser beams are crossing so determining the probe area AlI droplets intersecting probe area are checked droplets which respect given parameters for shape are taken as valid droplets and make up the sample whose size and velocity parameters are reported

ValidationsDroplets accepted based on given shape parameters to make up for test sample

Velocity MeanDroplets distribution speed histogram (ms)

Volume Flow RateIt is the volume measured in cubic centimeter per second of the validated droplets making up for the sample

Volume FluxIt is the flow rate per specific area measured in cubic centimeter per second and square centimeter of the validated droplets making up the sample

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LIQUID SPRAY AND SPRAY NOZZLES Droplet spectrum

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SLIQUID SPRAY AND SPRAY NOZZLES Droplet spectrum

PNR can supply upon request complete documentation con-taining test reports about the aforementioned parameters and additional information for all PNR atomizersThe diagrams beside show the distribution of droplet diameters and droplet velocities of a spray under test as available to our customers

In the photo beside a test being performed at our laboratoriesWe use a computer driven laser interpherometer to detect and record the spray parameters while fluid capacities and feed pressure values are monitored through high precision instru-ments

IMPORTANT NOTE

The droplet size values measured with a PDPA instrumentation are representative of a well specified volume inside the spray and taking measurements in a different volume they can be considerably differentA correct spray droplet size characterization requires then not only tests being performed in several volumes within the spray but also that those measure volumes are selected with regard to the process the droplets are expected to performAs an example the droplet characterization of a spray should define how many volumes have been tested and which are the coordinates of each single test volume in relation to the nozzle orifice

Most of the times pretending to describe the droplet spectrum of a spray nozzle at a given pressure with only one diagram is therefore not correct

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In order to calculate the discharge flow rate from a given nozzle the Bernoulli law shall be used which says that the energy of a liquid flow remains unchanged over alI the sections of the flow Friction and turbu-lence losses are neglected which is reasonable for our purposes if the cal-culation is performed over two sections not too far away from each other

The Bernoulli law can be written as follows

Therefore if we consider two sections of the same pipe section A and section B we can write that the flow energy remains constant in the form

If we finally consider that the two above sections are taken immediately before and immediately after the nozzle outlet orifice being

ZA = ZB PB = 0 (PA is a differential pressure referred at the atmosphere pressure)

VA cong 0 negligible as compared to VB (for orifice diameter much smaller than the duct diameter)

we shall come to the formula

When we define a new constant k to include the value of the nozzle orifice outlet area (A) then we come to the following equation which says that for a nozzle spraying into a room at ambient pressure the exiting flow is proportional to the feed line pressure

Considering now two different pressure values for the same nozzle since k is a constant quantity we can write that

and derive from the above an equation that makes it possible to calculate the nozzle flow value at any given pressure value once the flow value at another pressure value is known

The energy of a given liquid flow crossing a given pipe section is composed of three parts namely

P Pressure energy of liquid particle per volume unit

1 ρV2 Kinetic energy of liquid particle per volume unit2ρgz Potential Energy of liquid particle per volume unit

Where ρ = density of liquid g = gravitational acceleration

z = height respect to one plane of reference V = liquid velocity

PA = 1 ρVB 2 rArr

2

K = Q rArr

PK =

Q1 = Q2 rArr

P1 P2

Q = A V rArr

Q = A x C x P rArr

1 P + 1 ρV2 + ρgz = E

2

VB = 2 PA rArr ρ

Q1 = P1

Q2 P2

3 V = C P

4 Q = K P

2 PA + 1 ρVA 2 + ρgzA = PB + 1 ρVB

2 + ρgzB 2 2

EXIT VELOCITY DEPENDS UPON PRESSURE

NOZZLE CAPACITY DEPENDS UPON PRESSURE

NOZZLE CAPACITYAT A DIFFERENT PRESSURE

5 Q2 = Q1 P2

P1

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LIQUID SPRAY AND SPRAY NOZZLES Nozzle flow rate

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SLIQUID SPRAY AND SPRAY NOZZLES Nozzle flow rate

The Equation (5) has been obtained after having simplified the real problem neglecting several factors like for examplebullInmostofthepracticalapplicationcasestheflowisturbulentandnotlaminarbullFrictionlossestendtostronglyincreasewithliquidvelocitybullDependinguponthetypeofnozzleadifferentpercentageoftheavailableenergyisusedtobreakupthejetandgivethe

desired spray pattern and spray angle

For the above reason equation (5) gives reliable results if used in a limited pressure range around the pressure value where the flow rate is known with this pressure range depending upon the type of nozzleOur experience has shown that one can expect the error in the calculated value to be lower than +- 6 for pressure values ranging from 13 to 3 times the reference value

As an example a nozzle rated for 10 lpm at 3 bars would have according to equation (5) the following flow valuesa 1 bar 577 lpma 9 bar 173 lpmin real conditions it can be expected the flow rate values to beas high as 61 lpm a 1 baras low as 162 lpm a 9 barAbove considerations are to be used as a guideline only because of the many factors influencing real operations which have not been considered here for example liquid temperature viscosity and density

Possible percentage deviation from theoretical flow rate values

Also above mentioned percentage errors have to be understood for nozzles using part of the flow energy to produce wide angle spray patternsLower values can be expected for narrow angle nozzles impact nozzles and straight jet nozzles Laboratory tests and diagrams showing real flow rate values for each nozzles are used in practice when a precise result must be available

Nozzle discharge coefficient

With reference to equation (4) if we consider the pressure value to be equal to 1 (P = 1 bar) the flow rate of the nozzle becomes

K is a parameter widely used in the fire fighting industry

In some instances reference is made to the nozzle discharge coefficient or shortly to the nozzle coefficient to indicate the nozzle flow rate for a unitary pressure Of course for a given pressure value Pn the flow value will be

+ 6

+ 3

- 3

- 6

CAPACITY AT A GIVEN PRESSURE VALUEWHEN K KHOWN

NOZZLE CAPACITYFOR P=1 barQ = K P = K 1 = K

6 Qn = K Pn

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The spray angle is the opening angle which the nozzle jet of droplets forms at the moment when it leaves the nozzle orifice and it is one of the fundamental parameters for the choice of a given nozzleIn fact the amplitude of the spray angle determines in connection with the distance between the nozzle orifice and the target to be covered the spray coverage and the density of liquid sprayed with respect to the cover area See our Catalogue for description of the different nozzle spray patterns The table at the bottom of the page gives the theoretical spray width based on the nozzle spray angle and the distance from the nozzle orifice It is important to note that because of several factors like gravity forces and aerodynamic drag the spray angle value cannot be maintained but in in a limited distance normally up to 300 mm from the orifice For air assisted atomizers it is improper to use the term spray angle since no precise value can be measured Therefore the values given by Catalogues are to be intended as guidelines only

THEORETICAL SPRAY COVERAGE

at various distances from nozzle orifice

Spray 50 100 150 200 250 300 400 500 600 700 800 1000 Angle mm mm mm mm mm mm mm mm mm mm mm mm

15deg 13 26 40 53 66 79 105 132 158 184 211 263 25deg 22 44 67 89 111 133 177 222 266 310 355 443 30deg 27 54 80 107 134 161 214 268 322 375 429 536 35deg 32 63 95 126 158 189 252 315 378 441 505 631 40deg 36 73 109 146 182 218 291 364 437 510 582 728 45deg 41 83 124 166 207 249 331 414 497 580 663 828 50deg 47 93 140 187 233 280 373 466 560 653 746 933 60deg 58 116 173 231 289 346 462 577 693 808 924 1150 65deg 64 127 191 255 319 382 510 637 765 892 1020 1270 70deg 70 140 210 280 350 420 560 700 840 980 1120 1400 75deg 77 154 230 307 384 460 614 767 921 1070 1230 1530 80deg 84 168 252 336 420 504 671 839 1010 1180 1340 1680 90deg 100 200 300 400 500 600 800 1000 1200 1400 1600 2000 95deg 109 218 327 437 546 655 873 1090 1310 1530 1750 2180 100deg 119 238 358 477 596 715 953 1190 1430 1670 1910 2380 110deg 143 286 429 571 714 857 1140 1430 1710 2000 2290 2856 120deg 173 346 520 693 866 1040 1390 1730 2080 2430 2771 3464 130deg 215 429 643 858 1070 1290 1720 2150 2570 3002 3431 4289

WhereASCbull = Actual Spray CoverageTSCbull = Theoretical Spray CoverageASAbull = Actual Spray AngleTSAbull = Theoretical Spray AngleL bull = Spray Distances

TSC = 2 middot L middot ctan ( TSA )2

7

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LIQUID SPRAY AND SPRAY NOZZLES Spray angle

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SLIQUID SPRAY AND SPRAY NOZZLES Spray angle

Depending upon the nozzle design variations of feed pressure may have a great influence on the spray angle valueGenerally with increasing pressure turbulence full cone nozzles will produce narrower angles flat jet nozzles will show a wider angle spray while nozzles working on the deflection principle like spiral nozzles and K style flat jet nozzles will be less affected by pressure changesAll nozzles will not function properly with very low pressure values (from 05 bar down depending upon nozzle type ) with a marked decay in performance larger drops not well defined spray pattern lower spray angle values

The above pictures show spray angles for different nozzles and different pressure valuesShould your application strictly require that a given value of the spray angle is obtained under a given pressure value or pressure range of values please obtain a test report from our laboratories

Full cone nozze DDW 2235

Flat jet nozzleJCW 2245

Spiral nozzeECW 2230

Pressure 05 bar Pressure 05 bar Pressure 05 bar

Pressure 3 bar Pressure 3 bar Pressure 3 bar

Pressure 10 bar Pressure 10 bar Pressure 10 bar

Photo obtained with 120000s flashlight

picture 1

picture 4

picture 7

picture 2

picture 5

picture 8

picture 3

picture 6

picture 9

NotePicture 2 shows clearly the droplet generation mechanism as described at page 15

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Terms and definitions

A very important characteristic of a spray nozzle is a parameter called Spray Distribution which gives a precise information about how evenly the drops of the spray are distributed onto the area covered by the sprayIt is self understood that normally it is preferable to obtain the most even distribution possibleIn the past this was done through the visual examination of a diagram reporting the quantity of water contained for example in glass pipes aligned onto the spray coverage areaPnr has determined to obtain such a result in a scientific way through high technology instrumentation as shown in the pictures below showing one of our patternators and a typical distribution diagram

Now to the spray geometry and some definition letrsquos consider a nozzle with a capa-city Q at the pressure PAt every value for distance H which we call height of spray we can define a plane lsquonrsquo normal to the nozzle axis on which a line can define the intersection of the spray onto the planeThe area covered by the spray on the plane lsquonrsquo has a surface S depending from the following parametersa) Spray pattern Fb) Opening angle of the spray αc) Height of the spray H

We can then write S=S( F α H )

In case of a full cone nozzle S is a circle with diameter C and S = 0785 C2

The capacity of the nozzle flows through the surface S but each smaller area inside the surface S will probably have a different value for the flow passing through itWe introduce then the value of Specific Capacity q

1) Specific Capacity

The function q depends upon the single point (xy) in the section S and then

Determining the function q is however very expensive therefore in practice two different functions are used which give in most occurrences sufficient information

2) Linear Distribution

3) Angular distribution

part Qpart x

qx =

Diagram 1

q = limΔS 0

ΔQΔS

q = = f (x y H)part Qpart S

part Qpart φ

qφ =

ΔQ is the liquid flowing through a surface ΔSwhere ΔS is a fraction of the surface S

x and y are the local coordinates in the section planewhere H is the distance of the test surface from the nozzle orifice

partQ is the variation in capacitywhere partx is the variation of a generic linear coordinate

partQ is the variation in capacitywhere partφ is the variation of a generic angular coordinate

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LIQUID SPRAY AND SPRAY NOZZLES Spray Distribution

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LIQUID SPRAY AND SPRAY NOZZLES Spray Distribution

Values extracted from these functions can characterize the spray and allow for drawing the diagrams defined as Distribution Curves

Analyzing the above curves it is possible to determine the type of water distribution along the spray coverage and the type of spray pattern like for example a full cone hollow cone flat or straight jet spray

Distribution measurement

The water distribution along the spray coverage is determined by means of an instrument called Patternator

A patternator consists of the following parts 1) Liquid collector2) Cell block3) Measure block4) Unloading block

The nozzle is above the instrument and it is orienta-ted in such a way the jet is collected into the upper liquid collectorThe liquid collector can be linear ( diagram 5 ) or round ( diagram 6 ) according to the test being runFrom the single parts in the collector the liquid is sent into the corresponding cells below (2)

The Measure block (3) determines the liquid content in each single cell then the unloading block (4) empties the instrument sending the liquid to the collection drain

There are two types of patternators

Analogic1 the different levels of liquid is visible through the transparent walls of the cells or pipes sometimes containing some kind of floating balls and a picture can be taken with a cameraDigital2 Delivering an automatic reading of the values in the cells the values being supplied as an electronic file from which a distribution curve can be easily obtained

Diagram 2 Linear distribution Diagram 3 Angular distribution

Diagram 4

Diagram 6 Circular collectorDiagram 5 Linear collector

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LIQUID SPRAY AND SPRAY NOZZLES Spray Distribution

Normalizing distribution curve

The values obtained from the cells of the patternator showing the water quantity collected in the single cells allow for preparing a Distribution curve which can be given as a single line curve or as a row of vertical barsThese resemble the liquid level collected into the glass pipes of the old type instrumentation

The curves prepared based on the liquid level in the single cells still are not precise they depend in fact from the testing time the longer this time the larger the liquid quantity sprayedTo eliminate the influence of time from the test it is necessary to transform the effective curves to normalized curves

Normalized4) linear distribution

Normalized5) angular distribution

Please note that Maximum value is the one belonging to the series of values measured in the cellsIn addition to the distribution it is possible to normalize the intervals to with the following formulas

Normalized 6) linear interval

Normalized 7) angular interval

The linear normalized amplitude is defined inside an interval [-1 +1]The angular normalized amplitude is defined inside an interval [0+2π]

Diagram 7 Effective linear distribution curve Diagram 8 Effective angular distribution curve

Mx

xx q

q=δ

N

πθ

2=Δ

Diagram 9 Normalized linear distribution curve Diagram 10 Normalized angular distribution curve

qx is the linear distribution of a generic cellwhere qx

M is the maximum linear distribution measured

qφ is the linear distribution of a generic cellwhere qφ

M is the maximum linear distribution measured

2 is the normalized linear amplitude of the spraywhere N is the number of active cells (active cells = cells containing liquid)

2π is the normalized angular amplitude of the spraywhere N is the number of active cells (active cells = cells containing liquid)

Mq

q

ϕ

ϕϕδ =φ

φ

φ

2

N=Δλ

2

N=Δλ

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Evaluation of spray distribution

To evaluate distribution curves it is necessary to take three properties into consideration

a) UNIFORMITY b) MONOTONY c) SIMMETRY

As described in the following diagrams and definitions

a) UNIFORM A distribution that minimizes the ratio AAdeg

b) MONOTONE Is a distribution with a curve which grows on the left side and decreases on the left side c) SYMMETRIC Is a distribution which minimizes the Ratio A+A-

Based on the above definitions the following curves show the ideal situations

The three properties are then evaluated by means of the following parameters

1 Integral uniformity

2 Incremental uniformity

3 Symmetry index

Complete details about the above formulas and definition can be found in our Technical Bulletin REL 080002 which shall be released from our Technical Department on request

Diagram 12Normalized and monotone distribution

Diagram 11Normalized and monotone distribution

Diagram 14Ideal monotony

Diagram 15Ideal symmetry

Diagram 13Ideal uniformity

1001 sdot=MA

AU

1002

2 sdot=lowastσ

U

1001

sdot⎥⎦

⎤⎢⎣

sdotminus=

lowast

lowast

δ

ε

NI S

sum minus=lowast

M

i iδδε

A is the area included in the normalized curvewhere Adeg is the rest of the area included in the 2x1 rectangle

Left side is the area -1 0where Right side is the area 0 +1

A+ is the area included below the curve on the right sidewhere A- is the area included below the curve on the left side

where

where δrsquo is the value of normalized liquid content in the symmetric cell N number of cells containing liquid in half of the diagram

lowast

lowast sum=

N

N

i i

δ

δ N Number of cells containing liquid

A area included below the curve AM area included below the ideal curvewhere

sum minus= +lowast

1

N

i ii δδσ

N Number of cells containing liquid

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SLIQUID SPRAY AND SPRAY NOZZLES Spray Distribution

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Liquids are characterized for their property of undergoing continuous deformation when subjected to shear stress The property of fluids (liquids or gases) to resist flowing due to the existence of internal friction within the fluid is called visco-sity

Thus if we imagine the different layers of fluid sliding one over the other with friction we can imagine that viscosity is defined the force required to move a unit area of fluid for a unit distance Viscosity is measured with many different systems among which the most used are the following

The following table shows correspondences between the most used viscosity units

The viscosity value of a liquid depends upon the temperature therefore the viscosity value must always be given with reference to a temperature value The viscosity of water (20deg C) is 1 Centipoise and 1 Centistoke since water mass density = 1

KINEMATIC SAYBOLT SAYBOLT ENGLER VISCOSITY UNIVERSAL FUROL

Centistoke Sq feetsec SSU SSF Degrees

100 000001076 310 --- 100

500 000005382 424 --- 137

1000 00001076 588 --- 183

1566 00001686 80 --- 245

2052 00002209 100 --- 302

2515 00002707 120 --- 357

4295 00004623 200 --- 592

1080 0001163 500 523 1460

1510 0001625 700 720 2044

1942 0002090 900 921 2628

3023 0003254 1400 143 4090

3885 0004182 1800 183 5260

5394 0005806 2500 254 7300

10788 001161 5000 509 146

15103 001626 7000 712 204

19419 002092 9000 916 263

32365 003483 15000 1526 438

METHOD UNIT DIMENSIONS NOTES

1 Dynamic viscosity(Absolute viscosity) Poise ML T-1 Poise = 100 Centipoises = (1 dyne per seccm2)

2 Kinematic viscosity Stoke L2 T-1 1 Stoke = 100 Centistoke = (cm2sec)Kinematic viscosity = Dynamic viscositydensity

3 SSUSSF

One of the most widely instruments to determine is the Saybolt viscosimeter which measures the time in seconds required for a fixed volume of a given liquid to flow through an orificeSSU = Seconds Saybolt Universal relates to a smaller orifice for less viscous liquidsSSF = Seconds Saybolt Furol relates to a larger orifice for more viscous liquids

LIQUID SPRAY AND SPRAY NOZZLES Influence of liquid viscosity

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Viscosity influence on nozzle flow rate

AlI nozzle Catalogue data refer to spraying water (water cinematic viscosity is equal to 1 Centistoke)A liquid with viscosity higher than water will require more energy to be pumped and sprayed and will flow with lower velocity at the same pressure and this will cause a reduction in the turbulence of the flow For the above reason nozzles working on the turbulence principle like normal full cone nozzles and whirl hollow cone nozzles will show an increase in capacity while spraying liquids with viscosity higher than water This increase is very consistent for small size nozzles where the small radius of the whirl chamber tends to cause high turbu-lence in the flow and tends to diminish and to disappear for nominal capacity valves (capacity values at 3 bar) larger than 15 liters per minute

The graph below shows for a liquid with a viscosity of about 4 Centistokes typical variations in the nozzle flow rate value for different values of the nozzle whirl chamber diameter As it may be seen these variations can be neglected in most practical applications where nozzles with whirl chamber diameters well over 3 mm are used

For other types of nozzles not working on the turbulence principle the increase on viscosity will simply reduce the liquid exit velocity at the orifice thus causing a decrease in capacity Experience shows that this decrease ranges between 3 and 6 of nominal water capacity that is to say that the variation introduced is in the same order of magnitude as the nozzle flow rate toler-ance

Viscosity influence on nozzle spray angle and spray pattern

With reference to the theory of jet break-up and droplet information it can be easily imagined that spraying a liquid more viscous than water is a difficult task

Al the properties of the spray tend to worsen therefore one can expectA higher value for the minimum operating pressure that is the pressure value which allows for obtaining a well defined 1 spray with the expected spray angle A worse spray distribution since the viscous behavior of the liquid makes it more difficult to pro-duce fine droplets and 2 to distribute them evenly with the desired spray pattern A narrower spray angle It is difficult to give guidelines since results on different nozzles at different pressures and with 3 different liquids are scarcely predictableHowever our experience shows that in many cases the use of impact nozzles can give acceptable results where all other type of nozzle failsA laboratory test or a field test are stili the safest way to obtain sound results

50

45

40

35

30

25

20

15

10

5

0 2 3 4 5 6 7 8 9

Increase Flow rate vs Whirl Chamber Diameter

Incr

ease

Flo

w R

ate

[mm

]

Whirl Chamber Diameter [mm]

LIQUID SPRAY AND SPRAY NOZZLES Influence of liquid viscosityLI

QUID

SPR

AYAN

D SP

RAY

NOZZ

LES

29wwwpnr-nozzlescomCTG SH 07 EU

With reference to the Bernoulli Rule as exposed in page 6 one can say that the pressure energy of the liquid flow at the nozzle inlet is transformed totally (minus some losses due to friction inside the nozzle) into liquid velocity at the nozzle orificeCatalogue figures give nozzle capacities when spraying waterIf the specific gravity or density of the liquid is different from that of water the available pressure energy will produce a different liquid velocity at the nozzle orificesIn other words a given quantity of energy will spray always the same quantity of liquid mass but different volumes (flow rates) according to the liquid specific gravity or density

Therefore a liquid heavier than water will exit the nozzle with a lower velocity at lower flow rate while to the contrary a liquid lighter than water will be sprayed at higher velocity at higher flow rate

The following formula is to be applied

The table below gives the value of a correction factor to obtain the flow rate of a liquid with different specific weight as water

WhereQL Liquid flow rateQW Water flow rateF Correction factor

kgliter Libregallon F

06 50 129

07 58 120

08 67 112

09 75 105

10 83 100

11 92 095

12 100 091

13 109 088

14 117 085

15 125 082

16 134 079

17 142 077

18 150 075

19 159 073

20 167 071

QL = F QW8

LIQUID SPRAY AND SPRAY NOZZLES Influence of liquid specific gravity

LIQU

ID S

PRAY

AND

SPRA

Y NO

ZZLE

S

30 wwwpnr-nozzlescom CTG SH 07 EU

The spraying water impact of a nozzle depends on several factors and more precisely spray distribution pattern and spray angle The first step to calculate the impact value which is usually expressed in Kilograms per square centimeter is to deter-mine Total Theoretical lmpact Value using the following formula

The obtained value has to be multiplied by the Total Theoretical Impact per Square Centimeter Coefficient (E)The final value is the Spraying Liquid Impact expressed in kgpcm2Of course not alI the energy of the fluid vein is transferred to the impact point

A part of this energy sometimes a considerable part goes to obtain a desired spraying angle by having the liquid vein acquire a high rotational speed inside the whirl chamber The highest value of impact is obtained with straight jet nozzle and the value can be calculated multiplying spraying pressure per 19The tables below containing the Total Theoretical Impact sqcm coefficient values for different spray pattern nozzles for a dis-tance of 300 mm

[kgpcm2]

TOTAL THEORETICAL IMPACT PER SQ CM COEFFICIENT AT DISTANCE OF 300 MM (E)

Spray Flat jet nozzle Spray Full cone nozzle Spray Hollow cone nozzle Angle Angle Angle

15deg 0300 15deg 0110 25deg 0180 35deg 0130 30deg 0025 40deg 0120 50deg 0100 50deg 0010 65deg 0070 65deg 0004 60deg80deg 001002 80deg 0050 80deg 0002 100deg 0001

WhereQ is the flow rate at working pressure in lpmP is the pressure value in kgpcm2

[kgpcm2]TTI = 0024 Q P

SLI = E TTI

9

10

LIQU

ID S

PRAY

AND

SPRA

Y NO

ZZLE

SLIQUID SPRAY AND SPRAY NOZZLES Jet impact

31wwwpnr-nozzlescomCTG SH 07 EU

Jet impact diagram

A further parameter to characterize the performance of a spray nozzle is the distribution of the jet impact force which could be derived by means of mathematical methods from the values of the spray distribution onto the surface covered by the spray but which can more easily be measured with the help of specifically designed instrumentation

In some applications the jet impact force Is the most important parameter used to realize the required processSteel sheet descaling in a rolling mill is a typical example where the jet impact is required to take away the surface scale and obtain a perfectly even surfaceFor that reason special nozzles have been developed to perform this very task where service life impact value and spray distribution reach the values required for satisfactory resultThese test are performed in a laboratory equipped with a specifically designed instrumentation where the high pressures involved in these process can be reached which can measure the pressure values along a matrix of points distributed in the spray area covered by the nozzle

These values are supplied both in a table of values and as a 3D pressure diagram similar to those shown below

On such applications where producing high impact values in the jet is necessary it is of paramount importance that the liquid flow turbulence is kept to a minimum and therefore it is widely used to insert into the nozzle entrance devices designed to improve the operating conditions by forcing the liquid flow through straight passages with several different shapes by doing so the impact delivered by the spray is increased with the same feed pressure

One typical shape used by Pnr is shown on the right and the two dia-grams below show the impact force diagrams for the same nozzle with and without a flow straightener the reduction of flow turbulence can lead in increase of impact force often higher than 20Further improvements of course are available when the nozzle inside profile is properly designed in order to avoid sharp cross section changes and all surfaces are finished as smoothly as possible

Typical design of a Pnr flow straightener

Impact pressure diagram with flow straightenerImpact pressure diagram without flow straightener

LIQU

ID S

PRAY

AND

SPRA

Y NO

ZZLE

S

LIQUID SPRAY AND SPRAY NOZZLES Jet impact

32 wwwpnr-nozzlescom CTG SH 07 EU

LIQUID SPRAY AND SPRAY NOZZLES Pressure drop through a nozzle

Pressure drop through a nozzle

Some of our customers have asked us In the past which Is the pressure drop through a nozzle since they consider a nozzle one of the parts in a piping like a valve or an elbow which causes a given pressure drop along the line

The reality is different and can be easily understood when considering the Bernoulli formula [2] as given at page 19 of this manual the formula says that the total energy of a liquid flow is made from the addition of three facors

Potential energy due to elevationbullPressure energybullVelocity energybull

When we apply the formula at the entrance and at the outlet ( the orifice ) of a nozzle and we neglect the influence of turbulence losses in between we can easily see that

The potential energy variation can be neglected because of the limited dimensions of the nozzle since the distance bullbetween the nozzle entrance and the nozzle orifice plays no role-The pressure energy variation is important since the liquid pressure value falls abruptly from the pressure inside the feed bullpipe to the ambient pressureThe velocity energy variation is also consistent since the liquid is ejected from the orifice at high speedbull

In other words the pressure energy of the liquid flowing through the orifice is suddenly transformed in liquid drops velocity which is exactly what a nozzle is designed to do

This is shown from equation [3] at page 19 which allows the exit velocity from the nozzle to be calculated from the pressure inside the pipe ( we actually consider the pressure difference between the inside of the pipe and the ambient pressure in this formula )

In other words all the energy still available at the nozzle is converted into velocity or if you so prefer you have a total pressure fall The system designer shall therefore evaluate all the pressure drop between the pump outlet flange and the nozzle entrance in order to be sure that the nozzle feed pressure is sufficient to assure the desired capacity for the liquid being sprayed

parameters valuesat nozzle outlet

nozzle inlet nozzle oulet or orice

feed pressure

inlet velocity

parameters valuesat the nozzle inlet

(A)potential elevation

energy

(A)velocity ( kinetic ) energy

(A)pressure energy

ambient pressure

exit velocity

LIQU

ID S

PRAY

AND

SPRA

Y NO

ZZLE

S

33wwwpnr-nozzlescomCTG SH 07 EU

NOZ

ZLE

MAT

ERIA

LS

The choice of the right material for a nozzle is sometimes the most important one to do since the nozzle operating life depends upon it There are several factors to influence or shorten the nozzle operating life sometimes more than one at the same time the most important being

Wear from solid particles suspended into the liquid being sprayed1 Chemical corrosion from the liquid being sprayed 2 Chemical corrosion from the ambience outside the nozzle3 Exposure to high temperature 4 Exposure to mechanical shocks5

NOZZLE MATERIALSPnr material codes 34Properties of materials 35Mechanical properties of materials 39Chemical resistance of materials 40

NOZZLE MATERIALS

34 wwwpnr-nozzlescom CTG SH 07 EU

PNR has adopted a short code to identify construction materials for nozzles and nozzle partsHere below the most frequenty used materials

MATERIAL STANDARDS

The following standards are mentioned with reference to materials identification

NOZ

ZLE

MAT

ERIA

LS

A1 Free Cutting Steel E1 TEFLONreg (PTFE) L3 NICROFERreg 5923

A2 Carbon Steel E3 DELRINreg (POM) L4 STELLITEreg 6

A8 Zinc Plated Mild Steel E6 PERSPEXreg (PMMA) L5 HASTELLOYreg B2

A9 Nickel Plated Mild Steel E7 VITONreg (FPM) L6 HASTELLOYreg C4

B2 AISI 304 Stainless Steel E8 NBR- Sh 70 Rubber L61 HASTELLOYreg C22

B3 AISI 316 Stainless Steel E81 SANTOPRENEreg Rubber L62 ULTIMETreg

B31 AISI 316L Stainless Steel E82 KLINGERITEreg L7 NICKEL 201

B4 AISI 321 Stainless Steel E83 HYPALONreg L8 HASTELLOYreg C276

B8 AISI 309 Stainless Steel E91 Silicon L9 SANICROreg 28 SS

B81 AISI 310 Stainless Steel F12 Tungsten Carbide (TC) N1 AISI 302 Stainless Steel

C1 AISI 420 St Steel hardened F2 PIREXreg P6 ABS

C4 AISI 317 Stainless Steel F3 Rubin P7 FASIT OIL

C6 SAF 2205 Stainless Steel F4 Zapphire P8 EPDM ShA Rubber

D1 Polyvinylchloride (PVC) F5 Ceramic P9 STIROLUXreg 637

D2 Polypropylene (PP) F6 Silicon Carbide (SC) T1 Brass

D3 Polyamide (PA) G1 Cast Iron T3 Copper

D5 Powder Charged PP H1 Titanium T5 Bronze

D6 Fiberglass Charged PP L1 MONEL 400 T8 Nickel Plated Brass

D7 High Density Polyethylene L2 INCOLOYreg 825 V1 Aluminium

D8 Polyvinylidenefluoride (PVDF) L21 INCONELreg 600 V7 Aluminium ENP

STANDARD ORGANIZATION COUNTRY STANDARD CODE

AFNOR Association Franccedilaise de Normalisation France NF

AISI American Iron and Steel Institute USA AISI

ANSI American National Standards Institute USA ANSI

ASTM American Society for Testing and Materials USA ASTM

BSI British Standards Institution UK BS

DIN Deutsches Institut fuumlr Normung Germany DIN

DSIT Dansk StandardsInformation Technology Denmark DS

ISO International Organization for Standardization International ISO

JIS Japanese Institute for Standard Japan JIS

UNI Ente Nazionale di Unificazione Italy UNI

NOTEThe complete list of the Materials Codes may be requested to our Technical Service mentioning release code TGCE CODMAT

NOZZLE MATERIALS PNR material codes

35wwwpnr-nozzlescomCTG SH 07 EU

NOZ

ZLE

MAT

ERIA

LS

B1 AISI 303 STAINLESS STEEL

Chemical composition CR 1750 NI 850 S 025 Coding correspondence

Type Stainless Steel Austenitic AISI 303

Hardening Not possible BS 303 S 21

Annealing 1050 1100deg C in water DIN Wnr 14305

Welding Possible with precautions Euro X10CrNiS1809

Corrosion properties

Good resistance Atmospheric exposure food substances organic chemicalsLow resistance Chlorides reducing acids and over 800deg C

JIS SUS 303

NF Z6CN 18-09

SIS 2346

UNI XWCrNiS 1809

B3 AISI 316 STAINLESS STEEL

Chemical composition C 005 CR 170 NI 120 MO 225 Coding correspondence

Type Stainless Steel Austenitic AISI 316

Hardening Not possible BS 316 S 21

Annealing 1050 1100deg C in water DIN Wnr 14401

Welding Easy using same steel electrodes Euro X6CrNiMo17122

Corrosion properties

Good resistance Atmosphere great number of salts organic acids foodsLow resistance Solutions of reducing acids temperatures over 500deg C

JIS SUS 316

NF Z6CND 17-11

SIS 2347

UNI X5CrNiMo1712

B31 AISI 316L STAINLESS STEEL

Chemical composition C 003 CR 170 NI 130 MO 225 Coding correspondence

Type Stainless Steel Austenitic AISI 316 L

Hardening Not possible BS 316S12

Annealing 1050 1100deg C in water DIN Wnr 14404

Welding Easy using same steel electrodes Euro X3CrNiMo1810

Corrosion properties

Good resistance Atmosphere great number of salts organic acids foods salt waterLow resistance Solutions of reducing acids temperatures over 500deg C

JIS SUS 316L

NF Z2CND17-12

SIS 2348

UNI X2CrNiMo 1712

NOZZLE MATERIALS Properties of materials

36 wwwpnr-nozzlescom CTG SH 07 EU

C1 AISI 420 STAINLESS STEEL

Chemical composition C 020 CR 1300 Coding correspondence

Type Stainless Steel Martensitic AISI 420

Hardening 980deg - 1030deg C in oil BS 420 S 29

Annealing 750deg - 800deg C in air DIN Wnr 14021

Welding Possible with precautions Euro X20Cr13

Corrosion properties Good resistance Drinkable water steamgasoline oil alcohol ammonia

JIS SUS 420 J1

NF Z20C13

SIS 2303

UNI X20Cr13

C2 AISI 416 STAINLESS STEEL

Chemical composition C 012 CR 1250 S 022 Coding correspondence

Type Stainless Steel Martensitic AISI 416

Hardening 950deg - 1100deg C in oil BS 416 S 21

Annealing 750deg - 800deg C DIN Wnr ---

Welding Not possible Euro X120CrS13

Corrosion properties Good resistance Drinkable water steamgasoline oil alcohol ammonia

JIS SUS 416

NF Z12CF13

SIS ---

UNI X12CrS13

D8 POLYVINYLIDENE FLUORIDE (PVDF)

Description HIGH-MOLECULAR WEIGHT THE TOUGHEST OF THE FLUOROCARBON RESINS

Trade names amp SuppliersKYNAR (Atochem North America Inc formerly Penwalt Corporation)

SOLEF (Solvay Polymer Corporation)

Physical andMechanical Properties

Excellent resistance to abrasion and stress fatigue

Extremely pure opaque white resin

Thermal Properties UsefuI in temperatures ranging from -73 149degC (-100 300degF)Heat deflection temperature is (8090deg C at 182 Bars (176 194deg F at 264 psi)

Chemical Compatibility

Excellent chemical resistanceCan be used with wet or dry halogens most strong acids and bases aliphatics aromaticsalcohols and strong oxidizing agentsNot recommended for contact with ketones esters amines and some organic acids(fuming sulfuric acid)

NOZZLE MATERIALS Properties of materialsN

OZZL

E M

ATER

IALS

37wwwpnr-nozzlescomCTG SH 07 EU

E1 POLYTETRAFLUOROETHYLENE (PTFE)

Description FLUOROPLASTIC THAT HAVE SOME OR ALL OF THEIR HYDROGEN MOLECULESREPLACED BY FLUORINE

Trade names amp Suppliers

TEFLON TFE FEP and PFA (Dupont Polymer Products)

NEOFLON (Daikin)

FLUON (ICI Americas Inc)

SST-2SST-3 (Shamrock Technologies Inc)

Physical andMechanical Properties

Low coefficient

Low adhesiveness

Buona resistenza agli agenti atmosferici

Good weatherabilityLow resistance to creep and wear unless reinforced with glass figravebers which results in superior resistance

Thermal Properties High and low temperature stabilityHeat deflection temperatures range from 4855deg C at 182 bar (118-132deg F at 264 psi)

Chemical CompatibilityChemically inert

Totally insoluble

E3 ACETAL (ACETAL HOMOPOLYMERS AND COPOLYMERS)

Description HIGHLY CRYSTALLINE RESINS BASED ON FORMALDEHYDE POLYMERIZATION TECHNOLOGY

Trade names amp Suppliers

DELRIN (Dupont Polymer Products Corporation)

CELCON (Hoechst Celanese Corporation)

ULTRAFORM (BASF Corporation)

RTP 800 (RTP Corporation)

LUPITAL amp TENAL (Franklin Polymers Inc)

FULTRON 404 (ICI Americas Inc)

Physical andMechanical Properties

High tensile strength rigidity and esilience

High fatigue endurance

Excellent dimensional stability

Low coefficient of friction

Outstanding abrasion and wear resistance

Excellent creep resistance

Thermal Properties Heat deflection temperatures range from 110 -136deg C at 182 bars(230 - 270deg F at 264 psi) higher if glass figravelled

Chemical Compatibility

Remains stable in long-term high temperature water immersionExcellent resistance to chemicals and solvents but prolonged exposure to strong acids not recommendedNote Suitable for close-tolerance high-performance partsAvailable for machined parts or may be injection molded

NOZZLE MATERIALS Properties of materials

NOZ

ZLE

MAT

ERIA

LS

38 wwwpnr-nozzlescom CTG SH 07 EU

L6 HASTELLOY C4

PHYSICAL AND MECHANICAL PROPERTIES CHEMICAL COMPOSITION CORROSION RESISTANCE

R = 650800 Mpa C = 0015 max

Very good against pitting and tensile-corrosion specially in oxydizing atmosphereResistance in welded joints definitely better than C 276 lower than C22

Rp02 = 250470 Mpa Ni = 65

HRB = 90 Cr = 160

Mo = 155

W = --

Fe = 3 max

Ti = 05

Co = 2 max

APPLICATIONSRecommended for applications with strongly oxidizing atmosphere

L61 HASTELLOY C 22

PHYSICAL AND MECHANICAL PROPERTIES CHEMICAL COMPOSITION CORROSION RESISTANCE

R = 700800 Mpa C = 001 max

Excellent performances with oxydizing atmospheres as well as for pitting and tensile-corrosion conditionsVery good resistance in reducing atmospheres and for welded joints

Rp02 = 360420 Mpa Ni = 56

HRB = 93 Cr = 22

Mo = 13

W = 3

Fe = 3

Ti = --

Co = 25 max

APPLICATIONSChemical industry (gas ducts gas washing and treatment systems phosphoric acid production) Heat exchangers pumps chlorination reactors

L8 HASTELLOY C 276

PHYSICAL AND MECHANICAL PROPERTIES CHEMICAL COMPOSITION CORROSION RESISTANCE

R = 600800 Mpa C = 0015 max

Very good in reducing and oxydizing atmospheresVery good against pitting and tensile-corrosionAcceptable resistance in welded jointsIn cast parts excessive segregation not eliminated by thermal treatment of annealing makes it convenient to use C22 or C4 qualitieswhich assure better corrosion resistance and mechanical properties

Rp02 = 300370 Mpa Ni = 57

HRB = 90 Cr = 145165

Mo = 1517

W = frac345

Fe =

V = 035 max

Co = 25 max

APPLICATIONSChemical industry (air ducts scrubbers fans) Paper industry Thermoelectric plants Steel thermal treatments

NOZ

ZLE

MAT

ERIA

LSNOZZLE MATERIALS Properties of materials

39wwwpnr-nozzlescomCTG SH 07 EU

MATERIALTENSILE STRENGHT

CORROSION RESISTANCERp 02 R

20degC 800degC 20degC 800degC

(68degF) (1408degF) (68degC) (1408degC)

AISI 302 280 100 680 200

Good sensitive to corrosionbetween grains for slow heatingand cooling in the 450-900deg Crange temperature

AISI 303 280 100 680 200 Discrete

AISI 304304L 270 90 600 100Good especially for 304L304 sensitive to corrosionbetween grains like AISI 302

AISI 309 250 100 640 220 Good Sensitive to corrosion between grains like AISI 302

AISI 310 310 170 650 270Good (gt 304 - 304L)Sensitive to corrosionbetween grains like AISI 302

AISI 316316L 270 110 560 220 Very high especially for 316L

AISI 321 210 100 540 140 Good

AISI 347 280 120 620 200 Good

AISI 416 620 70 750 90

Good in medium corrosive ambient (atmosphere water gasoline alcohol N1-13 foods)Not in high corrosive

BRASS 110-150 --- 360-410 --- Good especially when nickel plated

BRONZE 100-300 --- 200-600 --- Discrete especially with sea water

CAST IRON le 500 V 100-800 V

NICKEL ALLOYS 100-1000 V 300-1300 VVery high also for high temperature To use in the temperaturerange 800-1200deg C

PLASTICS --- --- 20-200 ---

Good also for erosionGenerally they are attackedwith oxidizers like nitric acidhalogens ect

PTFE --- --- 30-40 ---

Very high except for elementarystate of alkaline metalsand to compounds containingfluorine at high temp

DUPLEX STEEL gtAISI 3 gtAISI 3 gtAISI 3 gtAISI 3 Very high also with high temperatureand also for pitting

TITANIUM alloy 195-850 V 300-900 VVery high in oxidizing ambientVery low in reducing ambient and with compounds containing fluorine

Legend Rp 02 = 02 YIELD STRENGHT [MPa]R = ULTIMATE TENSILE STRENGHT [MPa]V = To verify time by time

NOZZLE MATERIALS Mechanical properties of materials

NOZ

ZLE

MAT

ERIA

LS

73wwwpnr-nozzlescomCTG SH 07 EU

PIPI

NG

PIPINGPipes data 74Economic pipe sizes 75Pressure drop in clean steel pipes 76Flange dimensions 78Sieve size conversion chart 80

PIPING

74 wwwpnr-nozzlescom CTG SH 07 EU

The following table report the data of pipes according to ANSI B3619 that is one of the most used standards that regulate welded stainless steel pipes

DN NPS OD[mm]

SCHEDULE

5S 10S 40SSTD 80SXS

t m t m t m t m

[mm] [kgm] [mm] [kgm] [mm] [kgm] [mm] [kgm]

6 18 103 NA NA 124 028 173 037 241 048

8 14 137 NA NA 165 050 224 064 302 081

10 38 172 NA NA 165 064 231 086 320 112

15 12 213 165 081 211 101 277 128 373 164

20 34 267 165 103 211 130 287 171 391 223

25 1 334 165 131 277 212 338 254 455 328

32 1frac14 422 165 167 277 273 356 344 485 453

40 1frac12 483 165 192 277 315 368 411 508 549

50 2 603 165 242 277 399 391 551 554 759

65 2frac12 730 211 374 305 534 516 875 701 116

80 3 889 211 458 305 655 549 115 762 155

90 3frac12 1016 211 525 305 752 574 138 808 189

100 4 1143 211 592 305 849 602 163 856 226

125 5 1413 277 960 340 117 655 221 953 314

150 6 1683 277 115 340 140 711 287 1097 432

200 8 2191 277 150 376 202 818 431 1270 656

250 10 2730 340 229 419 282 927 611 1270 827

300 12 3239 396 317 457 365 953 749 1270 988

350 14 3556 396 348 478 419 NA NA NA NA

400 16 4064 419 421 478 480 NA NA NA NA

450 18 457 419 474 478 541 NA NA NA NA

500 20 508 478 602 554 696 NA NA NA NA

550 22 559 478 662 554 767 NA NA NA NA

600 24 610 554 837 635 959 NA NA NA NA

Where

DN = Nominal diameter NPD = Nominal Pipe Size OD = Outside Diameter t = Wall Thickness m = Specific WeightPIPI

NG

PIPING Pipes data

75wwwpnr-nozzlescomCTG SH 07 EU

The following Specific Pressure Drops (Y) are normally used in the good engineering practice(where Y=ΔPL ΔP Pressur Drop and L Pipe Lenght)

For pipe sizing the Velocity (V) is also usedIn the following table are shown the typical liquid velocities in steel pipes

Some fixed pressure drop values indicationsfor gate valves (fully open) consider a pressure drop of 5 metersbullfor normal bends consider a pressure drop of 5 metersbullfor a check valve consider a pressure drop of 15 metersbull

In the succeeding tables we show the velocity and specific pressure drop for several flow rates and pipe diameters

Not boiling waterY = 02divide05 bar100 m for pump discharge (07 bar100 m max if P gt 50 bar)

Y lt 0110 bar100 m for pump suction

Boiling water Y = 004divide005 bar100 m for pump suction (velocity = 03divide09 ms)

LIQUID LINE TYPE

Specific Pressure Dropsvs Velocity [ms]

0 lt V lt 2 3 lt V lt 10 10 lt V lt 20

NOT BOILING WATER

Pump suctionPump discharge (long)Discharge leads (short)Boiler feedDrainsSloped sewer

03 divide 0606 divide 0912 divide 2712 divide 2709 divide 12

-

06 divide 1209 divide 1515 divide 3715 divide 3709 divide 1509 divide 15

09 divide 1812 divide 2124 divide 4224 divide 42

-12 divide 21

HYDROCARBON LIQUIDS(normal viscosity)

Pump suctionDischarge heather (long)Discharge leads (short)Drains

05 divide 0808 divide 1112 divide 2709 divide 12

06 divide 1209 divide 1515 divide 3709 divide 15

09 divide 1812 divide 2124 divide 46

-

MEDIUM VISCOSITY OILPump suctionDischarge (short)Drains

--

03

05 divide 0901 divide 0209 divide 15

08 divide 1501 divide 0312 divide 18

OTHER WATERCooling tower Chilled waterSea water and generally foulingwater (long pipes) ()

06 divide 09 09 divide 15 12 divide 21

Note () In this case Cameron method has to be used with C=1 Y = 005 divide 012 bar100 m for principal manifold Y = 012 divide 023 bar100 m for secondary manifold

PIPI

NG

PIPING Economic pipe sizes

76 wwwpnr-nozzlescom CTG SH 07 EU

18rdquo 14rdquo

1 0350 0370 0200 0090 38rdquo 12rdquo

2 0705 1340 0395 0331 0223 0082 0145 0029 34rdquo

3 1060 2890 0593 0673 0333 0176 0217 0061 0125 0016 1rdquo

4 1410 4940 0788 1150 0444 0291 0290 0101 0167 0027 0110 0010

5 1760 7460 0985 1750 0556 0424 0362 0149 0209 0040 0137 0014

6 1180 2460 0667 0594 0434 0207 0251 0054 0165 0019 114rdquo

8 1580 4060 0892 1020 0579 0351 0335 0091 0219 0033 0126 0009 112rdquo

10 1110 1530 0724 0534 0418 0136 0274 0049 0158 0012 0116 0006

15 1670 3250 1090 1130 0627 0284 0411 0099 0236 0026 0174 0012

20 2rdquo 2230 5600 1450 1900 0836 0481 0549 0168 0315 0043 0233 0021

30 0212 0013 212rdquo 2170 4130 1250 1020 0823 0353 0473 0092 0348 0043

40 0283 0022 0190 0007 2900 7180 1670 1760 1100 0606 0631 0155 0465 0073

50 0354 0032 0237 0012 2090 2700 1370 0911 0789 0233 0581 0108

60 0424 0044 0284 0017 2510 3810 1650 1290 0943 0321 0697 0150

70 0495 0079 0332 0022 3rdquo 2930 5120 1920 1720 111 0434 0814 0199

80 0566 0074 0379 0028 0248 0010 312rdquo 2190 2210 126 0554 0925 0253

90 0636 0093 0427 0035 0279 0013 0209 0006 2470 2770 142 0692 1040 0319

100 0707 0114 0474 0043 0310 0015 0232 0007 4rdquo 2740 3400 158 0843 1160 0392

150 1060 0238 0711 0090 0464 0031 0349 0016 0272 0008 4110 7440 236 181 1740 0828

200 1410 0414 0948 0153 0619 0053 0466 0027 0362 0014 315 314 2330 1450

250 1760 0625 1190 0233 0774 0080 0581 0040 0453 0021 5rdquo 2900 2200

300 2120 0889 1420 0324 0930 0112 0698 0055 0543 0030 0352 0011 3480 3070

350 2470 1190 1660 0438 1080 0150 0815 0074 0634 0040 0411 0014 6rdquo 4070 4160

400 2830 1550 1900 0563 1240 0195 0935 0096 0724 0051 0469 0018 0341 0007 4650 5380

450 3180 1930 2130 0707 1390 0242 1050 0120 0815 0063 0528 0022 0366 0009 5230 6790

500 3540 2380 2370 0867 1550 0298 1170 0147 0902 0076 0587 0027 0407 0011

550 3880 2870 2610 1040 1700 0354 1280 0174 0991 0092 0645 0032 0447 0013

600 4240 3390 2840 1220 1860 0418 1400 0204 1090 0110 0704 0037 0488 0015

650 4590 5560 3080 1420 2010 0486 1510 0239 1180 0127 0762 0043 0529 0017

700 4950 4550 3320 1650 2170 0560 1630 0275 1270 0146 0821 0050 0569 0020

750 5300 5200 3560 1880 2320 0637 1750 0314 1360 0164 0879 0057 0610 0023

800 3790 2130 2480 0721 1860 0354 1450 0185 0936 0064 0651 0025 8rdquo

850 4030 2390 2630 0805 1980 0395 1540 0209 1000 0072 0692 0028 0403 0007

900 2790 0901 2090 0438 1630 0232 1050 0008 0732 0032 0427 0008

950 2940 1000 2210 0486 1720 0258 1120 0087 0773 0036 0451 0010

1000 3100 1110 2320 0534 1810 0284 1170 0096 0814 0039 0474 0011

1100 3410 1290 2560 0643 1990 0341 1290 0116 0895 0047 0522 0012

1200 3720 1 580 2800 0763 2170 0403 1410 0135 0974 0055 0569 0015

1300 3030 0890 2360 0473 1530 0157 1060 0063 0616 0017

1400 3260 1020 2540 0544 1640 0183 1140 0072 0664 0019

1500 3490 1170 2720 0617 176 0208 1220 0083 0712 0022

1600 3720 1330 2890 0697 1880 0234 1300 0093 0758 0025

1700 10rdquo 3950 1490 3080 0784 1990 0260 1380 0104 0806 0028

1800 0546 0010 3260 0875 2110 0290 1470 0116 0854 0032

1900 0575 0012 3440 0965 2230 0323 1550 0129 0901 0034

2000 0606 0012 3617 1060 2340 0356 1630 0143 0946 0037

2200 0667 0015 3980 1280 2580 0429 1790 0172 1050 0045

2400 0727 0017 12rdquo 2820 0507 1950 0200 1140 0053

2600 0788 0021 0563 0009 3050 0589 2110 0234 1230 0061

2800 0848 0023 0606 0010 14rdquo 3280 0676 2280 0268 1330 0070

3000 0909 0026 0649 0011 0532 0007 3520 0773 2440 0306 1420 0080

3500 1060 0035 0760 0015 0620 0009 4110 105 2850 0416 1660 0108

4000 1210 0045 0866 0020 0709 0012 16rdquo 4690 135 3250 0532 1900 0139

4500 1360 0056 0976 0025 0798 0015 0606 0007 3660 0674 2130 0173

5000 1520 0069 1080 0029 0886 0018 0674 0009 4070 0822 2370 0212

6000 1810 0097 1290 0042 1070 0026 0808 0013 18rdquo 4880 1160 2850 0301

7000 2120 0130 1510 0055 1240 0035 0940 0017 0741 0010 5690 1580 3310 0403

8000 2420 0168 1730 0072 1420 0045 1080 0022 0847 0012 6510 2050 3790 0525

9000 2730 0210 1950 0091 1600 0056 1210 0027 0954 0015 4270 0659

10000 3030 0257 2170 0111 1770 0067 1350 0033 1050 0019 4740 0801

Legend Q Water Flow Rate (Lpm) V Velocity (ms) Y Specific Pressure Drops (bar100m)Water at ambient temperature in straight pipe

SPECIfIC PRESSURE DROPS fOR WATER fLOW IN CLEAN STEEL PIPE SCH 10S

Q V Y V Y V Y V Y V Y V Y V Y V Y [lm] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m]

PIPI

NG

77wwwpnr-nozzlescomCTG SH 07 EU

SPECIfIC PRESSURE DROPS fOR WATER fLOW IN CLEAN STEEL PIPE SCH 40S

Legend Q Water Flow Rate (Lpm) V Velocity (ms) Y Specific Pressure Drops (bar100m)Water at ambient temperature in straight pipe

18rdquo 14rdquo

1 0458 0726 0251 0170 38rdquo 12rdquo

2 0918 2590 0501 0600 0272 0136 0170 0044 34rdquo

3 1380 5590 0752 1220 0407 029 0255 0091 0144 0023 1rdquo

4 1840 9570 1000 2090 0543 048 0340 0151 0192 0038 0120 0012

5 2290 14450 1250 3180 0679 070 0425 0223 0241 0057 0150 0017

6 1500 4460 0815 0980 0510 0309 0289 0077 0180 0024 114rdquo

8 2010 7360 1090 1690 0680 0524 0385 0129 0240 0041 0138 0011 112rdquo

10 1360 2520 0850 0798 0481 0193 0300 0061 0172 0015 0127 0008

15 2040 5370 1280 1690 0722 0403 0450 0124 0258 0032 019 0015

20 2rdquo 2720 9240 1700 2840 0962 0683 0600 0210 0344 0054 0254 0026

30 0231 0016 212rdquo 2550 6170 1440 1450 0900 0442 0517 0114 038 0053

40 0308 0027 0216 0010 3400 10720 1920 2500 1200 0758 0689 0193 0507 0091

50 0385 0039 0270 0017 2410 3830 1500 1140 0861 029 0634 0135

60 0462 0055 0324 0023 2890 5410 1800 1610 103 0400 0761 0187

70 0539 0098 0378 0031 3rdquo 3370 7270 2100 2150 1210 0541 0888 0248

80 0616 0092 0432 0039 028 0014 312rdquo 2400 2760 1380 0690 1010 0315

90 0693 0115 0486 0048 0315 0017 0235 0008 2700 3470 1550 0862 1140 0397

100 0770 0141 0540 0059 035 002 0261 0010 4rdquo 3000 4250 1720 1050 1270 0488

150 1150 0295 0810 0125 0524 0042 0392 0021 0304 0011 4500 9300 2580 2260 1900 1030

200 1540 0512 1080 0212 0699 0072 0523 0036 0405 0019 3440 3910 2540 1810

250 1920 0773 1350 0322 0874 0108 0653 0053 0507 0028 5rdquo 3170 2740

300 2310 1100 1620 0449 105 0152 0784 0074 0608 004 0387 0014 3800 3820

350 2690 1470 1890 0606 122 0203 0915 0099 0710 0053 0452 0018 6rdquo 4440 5180

400 3080 1920 2160 0780 14 0264 1050 0128 0811 0068 0516 0023 0375 0009 5070 6690

450 3460 2390 2430 0979 157 0328 1180 0161 0912 0084 0581 0028 0402 0012 5710 8450

500 3850 2950 2700 1200 175 0403 1310 0196 1010 0101 0646 0034 0447 0014

550 4230 3550 2970 1440 192 0479 1440 0232 1110 0122 0710 0041 0491 0016

600 4620 4200 3240 1690 2100 0566 1570 0273 1220 0146 0775 0047 0536 0019

650 5000 6880 3510 1970 2270 0658 1700 0319 1320 0169 0839 0055 0581 0022

700 5390 5630 3780 2280 2450 0759 1830 0368 1420 0194 0904 0063 0625 0025

750 577 6440 4050 2600 2620 0863 1960 042 1520 0218 0968 0072 067 0029

800 4320 2950 2800 0977 2090 0473 1620 0246 1030 0081 0715 0032 8rdquo

850 4590 3310 2970 1090 2220 0528 1720 0277 1100 0091 076 0036 0439 0009

900 3150 1220 2350 0585 1820 0308 1160 0100 0804 0041 0465 001

950 3320 1350 248 0649 1930 0342 1230 0111 0849 0045 0491 0012

1000 3500 1500 261 0714 2030 0377 1290 0122 0894 0049 0516 0013

1100 3850 1750 2870 0860 2230 0452 1420 0147 0983 0059 0568 0015

1200 4200 2140 3140 1020 2430 0534 1550 0172 1070 0069 0620 0018

1300 3400 1190 2640 0627 1680 0200 1160 008 0671 0021

1400 3660 1370 2840 0722 1810 0232 1250 0091 0723 0024

1500 3920 1560 3040 0818 1940 0264 1340 0105 0775 0027

1600 4180 1780 3240 0924 2070 0297 1430 0118 0826 0031

1700 10rdquo 4440 1990 3450 1040 2190 0331 1520 0132 0878 0035

1800 0590 0012 3650 1160 2320 0369 1610 0147 0930 0039

1900 0622 0014 3850 1280 2450 041 1700 0163 0981 0042

2000 0655 0015 40500 1410 2580 0452 1790 0181 1030 0046

2200 0721 0018 4460 1700 2840 0545 1970 0217 1140 0056

2400 0786 0021 12rdquo 3100 0645 2140 0253 1240 0065

2600 0852 0025 0600 001 3360 0749 2320 0296 1340 0076

2800 0917 0028 0646 0012 14rdquo 3610 0859 2500 0339 1450 0087

3000 0983 0032 0692 0013 0573 0008 3870 0982 268 0387 1550 0099

3500 1150 0043 0810 0018 0668 0011 4520 1330 3130 0526 1810 0134

4000 1310 0055 0923 0023 0764 0014 16rdquo 5160 1720 3570 0673 2070 0172

4500 1470 0068 1040 0029 0860 0018 0658 0009 4020 0853 2320 0214

5000 1640 0084 1150 0034 0955 0022 0731 0011 4470 1040 2580 0262

6000 1960 0118 1380 0049 1150 0031 0877 0016 18rdquo 5360 1470 3100 0373

7000 2290 0158 1610 0065 1340 0042 1020 0021 0808 0012 6250 2000 3610 0499

8000 2620 0204 1840 0085 1530 0054 1170 0027 0924 0015 7150 2590 4130 065

9000 2950 0256 2080 0107 1720 0067 1310 0033 1040 0019 4650 0816

10000 3280 0313 2310 0130 1910 0081 1460 0041 1150 0023 5160 0992

Q V Y V P V Y V Y V Y V Y V Y V Y [lm] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m]

PIPI

NG

78 wwwpnr-nozzlescom CTG SH 07 EU

10 75 12 038 4 11 50

15 80 12 044 4 11 55

20 90 14 065 4 11 65

25 100 14 082 4 11 75

32 120 14 117 4 14 90

40 130 14 139 4 14 100

50 140 14 162 4 14 110

65 160 14 214 4 14 130

80 190 16 343 4 18 150

100 210 16 422 4 18 170

125 240 18 611 8 18 200

150 265 18 751 8 18 225

175 295 20 1020 8 18 255

200 320 20 1230 8 18 280

250 375 22 1850 12 18 335

300 440 22 2550 12 22 395

350 490 22 3180 12 22 445

400 540 22 3850 16 22 495

450 595 22 4700 16 22 550

500 645 24 6040 20 22 600

PN 6 (UNI 6091)

ND 6 (DIN 2527) DN Flange Holes

D t W N Oslash a

90 14 063 4 14 60

95 14 071 4 14 65

105 16 101 4 14 75

115 16 122 4 14 85

140 16 180 4 18 100

150 16 209 4 18 110

165 18 287 4 18 125

185 18 365 4 18 145

200 20 461 8 18 160

220 20 565 8 18 180

250 22 812 8 18 210

285 22 1050 8 22 240

315 24 1410 8 22 270

340 24 1620 12 22 295

405 28 2510 12 25 355

460 28 3520 12 25 410

520 30 4820 16 25 470

580 32 6350 16 30 525

640 32 7720 20 30 585

715 34 1020 20 33 650

PN 16 (UNI 6093)

ND 16 (DIN 2527) Dimensions Holes

D t W N Oslash a

ND 10 (DIN 2527) Dimensions Holes

D t W N Oslash a

90 14 063 4 14 60

95 14 071 4 14 65

105 16 101 4 14 75

115 16 122 4 14 85

140 16 180 4 18 100

150 16 209 4 18 110

165 18 287 4 18 125

185 18 365 4 18 145

200 20 461 4 18 160

220 20 565 8 18 180

250 22 812 8 18 210

285 22 1050 8 22 240

315 24 1410 8 22 270

340 24 1650 8 22 295

395 26 2410 12 22 350

445 26 3080 12 22 400

505 26 3960 16 22 460

565 26 4960 16 25 515

615 26 5860 20 25 565

670 28 7530 20 25 620

PN 10 (UNI 6092)

LegendaDN Nominal DiameterD Flange External Diametert Flange ThicknessW Flange WeightN Hole NumberOslash Hole Diametera Hole axis

PIPING Flange dimensionsPI

PIN

G

Blind flanges to DIN 2527

79wwwpnr-nozzlescomCTG SH 07 EU

LegendDN Nominal DiameterD Flange External Diametert Flange ThicknessW Flange WeightN Hole NumberOslash Hole Diametera Hole axis

12rsquorsquo 889 111 08 4 159 603

34rsquorsquo 984 127 09 6 159 698

1rsquorsquo 1079 143 10 4 159 794

114rsquorsquo 1175 159 13 4 159 889

112rsquorsquo 1270 175 14 4 159 984

2rsquorsquo 1524 190 18 4 190 1206

212rsquorsquo 1778 222 32 4 190 1397

3rsquorsquo 1905 238 41 4 190 1524

312rsquorsquo 2159 238 59 8 190 1778

4rsquorsquo 2286 238 77 8 190 1905

5rsquorsquo 2540 238 91 8 222 2159

6rsquorsquo 2794 254 118 8 222 2413

8rsquorsquo 3429 286 204 8 222 2984

10rsquorsquo 4064 302 318 12 254 3619

12rsquorsquo 4826 317 500 12 254 4318

14rsquorsquo 5334 349 600 12 286 4762

16rsquorsquo 5969 365 770 16 286 5397

18rsquorsquo 6350 397 950 16 317 5778

20rsquorsquo 6985 429 1230 20 317 6350

22rsquorsquo 7493 460 1510 20 349 6921

ANSI 150 lb DN Flange Holes

D t W N Oslash a

952 143 10 4 159 667

1175 159 14 4 190 825

1238 175 18 4 190 889

1333 206 27 4 190 984

1556 222 36 4 222 1143

1651 254 45 8 190 1270

190S 286 68 8 222 1492

209S 317 91 8 222 1683

2286 349 132 8 254 1841

2540 349 150 8 254 2000

2794 381 200 8 254 2349

3175 413 277 12 254 2699

3810 476 450 12 286 3302

4445 540 700 16 317 3873

5207 571 103 16 349 4508

5842 603 141 20 349 5143

6477 635 181 20 381 5715

7112 667 228 24 381 6286

7747 698 282 24 413 6858

8382 730 311 24 444 7429

ANSI 400 lb Dimensions Holes

D t W N Oslash a

ANSI 300 lb Dimensions Holes

D t W N Oslash a

952 143 10 4 159 667

1175 159 14 4 190 825

1238 175 18 4 190 889

1333 190 27 4 190 984

1556 206 32 4 220 1143

1651 222 36 8 190 1270

1905 254 54 8 222 1492

2095 286 73 8 222 1683

2286 302 95 8 222 1841

2540 317 122 8 222 2000

2794 349 159 8 222 2349

3175 365 227 12 222 2699

3810 413 370 12 254 3302

4445 476 580 16 286 3873

5207 508 840 16 317 4508

5842 540 1070 20 317 5143

6477 571 1390 20 349 5715

7112 603 3900 24 349 6286

7747 635 2230 24 349 6858

8382 667 2700 24 413 7429

PIPING Flange dimensions

PIPI

NG

flanges to ANSI norms

80 wwwpnr-nozzlescom CTG SH 07 EU

PIPI

NG

Sieves are used both for determining the particle size distribution of a granular material and to filter solid particles in a liquid Normally the sieve is made with a fabric whose characteristic dimensions areL is the Opening Width (free passage)D is the Diameter of the wireP is the Pitch of the wireS is the Thickness of the fabricTo classify particle sizes there is some Sieve Series according to specific standardsthe most known are Tyler Sieve Series US Sieve Series UK Sieve SerieshellipThe Tyler mesh size indicates exactly the number of openings per linear inch of mesh

L[microm]

TYLER Sieve[Mesh No]

ASTM E11 Sieve[Mesh No]

BS 410 Sieve[Mesh No]

DIN 4188 Sieve[mm]

5 2500 2500 0005

10 1250 1250 0010

15 800 800 0015

20 625 635 625 0020

22 0022

25 500 500 500 0025

28 0028

32 na 450 440 0032

36 0036

38 400 400 400

40 0040

45 325 325 350 0045

50 0050

53 270 270 300

56 0056

63 250 230 240 0063

71 0071

75 200 200 200

80 0080

90 170 170 170 0090

100 0100

106 150 140 150

112 0112

125 115 120 120 0125

140 0140

150 100 100 100

160 0160

180 80 80 85 0180

200 0200

In the german standard (DIN norm 4188) the Opening Width (L) is given in millimeters

PIPING Sieve size conversion chartPI

PIN

G

81wwwpnr-nozzlescomCTG SH 07 EU

L[microm]

TYLER Sieve[Mesh No]

ASTM E11 Sieve[Mesh No]

BS 410 Sieve[Mesh No]

DIN 4188 Sieve[mm]

212 65 70 72

250 60 60 60 0250

280 0280

300 48 50 52

315 0315

355 42 45 44 0355

400 0400

425 35 40 36

450 0450

500 32 35 30 0500

560 0560

600 28 30 25

630 0630

710 24 25 22 0710

800 0800

850 20 20 18

900 0900

1000 16 18 16 1000

1120 1120

1180 14 16 14

1250 1250

1400 12 14 12 1400

1600 1600

1700 10 12 10

1800 1800

2000 9 10 8 2000

2240 2240

2360 8 8 7

2500 2500

2800 7 7 6 2800

3150 3150

3350 6 6 5

3550 3550

4000 5 5 4 4000

4500 4500

4750 4 4 35

5000 5000

5600 35 35 3

6700 3 0265 in 1

8000 25 516 in na

Applicable standards areISO 565 (1987) ISO 3310 (1999) ASTM E 11-70 (1995)DIN 4188 (1977) BS 410 (1986) AFNOR NFX11-501 (1987)

Legend Q Water Flow Rate V Velocity P Pressure drop Pressure drop in bar per 100 meters of straight pipe (water at ambient temperature)

PIPING Sieve size conversion chart

PIPI

NG

Besides its main range of nozzles for industrial applications PNR manufactures a wide range of complementary products and systems to optimize the use of spray jets and fluids control in most of the modern industrial processes

PNR PRODUCT RANGE

CTG AC

CTG LS

CTG UG

CTG AZ

Complementary Products andAssembly FittingsA complete line of nipples clamps swivel joints and everything that helps you to assemble align and service your spraying systems quickly and easilyAir blowers mixing eductors filters clean-ing guns and lances hose reels steam heaters pressure tanks quick couplings to help you build up a professional system upgraded to the latest standards

Tank washing systemsA complete range from simple fixed washing heads to the two-axis heads from mushroom nozzles to fluid driven reaction heads up to the motor driven washing heads equipped with a pneu-matic or electric motorAll for the inside cleaning of industrial tanks according to the latest technology accessories included

Spray nozzles for industrial applicationsOne of the world most complete lines of nozzles for numberless industrial appli-cations Nozzles with a wide openings range various types of vanes several spray patterns anti-clog design available in small and big dimensions and made in many food-grade materials like PFTE and Stainless Steel 316L with threaded and flanged connections

Air assisted atomizersUltrasonic classic and automatic atomiz-ers for the finest atomization in any insus-trial process High quality machining and strict quality control ensure your systems top professional resultsProgramming and control panels for an easy assembly of complete humidification systems

CTG SP

CTG PM

CTG SW

CTG LN

Spraydry nozzlesAir assisted or hydraulic high pressure ato-mizers made in high-quality metal alloys or tungsten carbideA complete line of nozzles for the moder-nization of existing facilities at competitive prices To ensure highly accurate results and a long service life these nozzles are manufactured with the finest materials and technologically advanced machines

Paper mill productsA line of products specifically designed for perfect results on paper mill machines including disc nozzles patented for self-cleaning filters flat jet nozzles with orifices in sapphire ruby and ceramic oscillating tubes equipped with a computer driven motor

Steelwork nozzlesA complete line of nozzles for steelwork applications including continuous casting air atomizers and conventional nozzles descaling nozzles for high pressure sys-tems dovetail tips for cylinders cooling and high capacity flanged nozzles for coke quenching

Gas cooling lancesSpillback or air assited lances for gas coo-ling in steelworks cement plants and other industrial applicationsWe can supply spare parts upgrade your plant and even supply a complete PLC driven system to enhance the towers per-formances to the highest efficiency level allowed by today technology

wwwpnr-nozzlescomCTG SH 07 EU

CTG SH 07 EUwwwpnr-nozzlescom

STAM

PATO

IN E

U 09

09

copy B

ellamp

Tany

Our products are distributed through

We are also represented in

PNR AmericaPNR Asia

PNR BalticPNR Benelux

PNR ChinaPNR Czech Republic

PNR DeutschlandPNR France

PNR ItaliaPNR Mexico

PNR UK

ArgentinaAustraliaAustriaBrazil

BulgariaCanada

ChileCroatia

DenmarkFinlandGreece

IndiaIndonesia

IranIrelandKorea

MalaysiaNorway

New ZealandPakistan

PhilippinesPoland

Portugal

RumeniaRussiaSerbia

SingaporeSlovenja

SpainSouth Africa

SwedenTaiwanTurkey

Venezuela

Page 4: SPRAY CTG SH 07 EU ENGINEERING HANDBOOK

4 wwwpnr-nozzlescom CTG SH 07 EU

Description

The INTERNATIONAL SYSTEM OF UNITS sometimes called SI has been defined by the International Standards Organization (ISO) and is based upon metric units The following notes include most units which are likely to be used in handing of fluids The system consists of nine base units and supplementary units which are coherently derived from them The coherence con-sists in the fact that the product or the quotient of any two unit quantities in the system result in another unit quantity Because of the world wide trend to use this modern metric system we are providing in the following the conversion constants for the most useful units

Base Units and derived units

The SI has defined the following base unit

GENE

RAL

INFO

RMAT

ION

Ndeg QUANTITY UNIT NAME UNIT SYMBOL

1 Length meter m

2 Mass kilogram kg

3 Time second s

4 Thermodynamic temperature Kelvin K

5 Molecular substance mole mol

6 Electric current Ampere A

7 Light intensity candela cd

8 Plane angle radiante rad

9 Solid angle steradian sr

Out of these base units many other have been derived the most interesting for our purposes being listed below

Ndeg QUANTITY UNIT NAME UNIT SYMBOL EQUIVALENCES

10 Area square meter m2

11 Volume cubic meter m3

12 Density kilogram per cubic meter Kgm3

13 Velocity meter per second ms

14 Acceleration meter per second squared ms2

15 Angular velocity radian per second rad s

16 Frequency Hertz Hz Hz = cicli s

17 Force Newton N N = kg ms2

18 Pressure Pascal Pa Pa = Nm2

19 Momentum kilogram meter per second Kg ms

20 Energy Joule J J = N m

21 Power Watt W W = Js

22 Moment of force Newton meter N m

23 Kinematic viscosity square meter per second m2s

24 Dynamic Viscosity Pascal second Pa s

25 Thermal conductivity Watt per meter Kelvin W (m K)

GENERAL INFORMATION International system of units

5wwwpnr-nozzlescomCTG SH 07 EU

GENE

RAL

INFO

RMAT

ION

AMERICAN UNIT CONVERSION FACTOR SI UNITPound masscubic feet 16018 kilogramscubic meterGallons per minute 3785 liters per minute (lpm)US Gallon 3785 liter (I)Pound force 4448 Newton (N)BTU (British Thermal Unit) 1055 Joule (J)BTU per hour 02931 Watt (W)BTU per pounddeg F 4184 Joule (kg K)mil 254 Micrometer (micron)Inches 254 millimeters (mm)Foot 03048 meter (m)Horsepower 0746 kilowatt (kW)Pounds per square inch 00689 bar (1 bar = 100 kPa)BTU per pound 2326 Joule per kgLbs per gallon 01198 kg per liter (kgl)Square inch 64516 square centimeter (cm2)Square foot 00929 square meter (m2)Acre 04047 hectares (ha)Foot per second 03048 meters per second (msec)Foot per minute 03048 meters per minute (mmin)Miles per hours 1609 kilometers per hour (kmh)Knots 1852 kilometers per hour (kmh)Cubic foot 00283 cubic meter (m3)Cubic inch 16387 cubic centimeter (cm3)Pound 04536 kilogram (kg)Ton 090272 metric ton (t)

QUANTITYDENSITYFLOW RATEFLUID VOLUMEFORCEHEATHEAT TRANSFERSPECIFIC HEAT CAPACITYLENGTHLENGTHLENGTHPOWERPRESSURECALORIC VALUE ENTALPYSPECIFIC WEIGHTSURFACESURFACESURFACEVELOCITYVELOCITYVELOCITYVELOCITYVOLUMEVOLUMEWEIGHTWEIGHT

Multiply American Units on the left (by the conversion factor) to obtain SI Units on the right Divide SI Units on the right (by the conversion factor) to obtain American Units on the left

GENERAL INFORMATION Prefix tables for SI units

Prefixes

SI units can be indicated together with a prefix to easily indicate very large or very small numbersAs an example visible light has a wave length of approximately 00000005 m (meters) which can be more easily written as 500 nm (nanometers)Please note it is not allowed to use prefixes together you cannot write 10000 m = 1da-km

10n Prefix Symbol Denomination Decimal equivalent1024 yotta Y 1 000 000 000 000 000 000 000 0001021 zetta Z 1 000 000 000 000 000 000 0001018 exa E 1 000 000 000 000 000 0001015 peta P 1 000 000 000 000 0001012 tera T 1 000 000 000 000109 giga G 1 000 000 000106 mega M Million 1 000 000103 kilo k Thousand 1 000102 etto h Hundred 10010 deca da Ten 1010minus1 deci d Tenth 0110minus2 centi c Hundredth 00110minus3 milli m Thousandth 000110minus6 micro micro Millionth 0000 00110minus9 nano n 0000 000 00110minus12 pico p 0000 000 000 00110minus15 femto f 0000 000 000 000 00110minus18 atto a 0000 000 000 000 000 00110minus21 zepto z 0000 000 000 000 000 000 00110minus24 yocto y 0000 000 000 000 000 000 000 001

GENERAL INFORMATION Conversion table American units to Si units

NoteBecause of discrepancies between some denominations in English and American we only mention the commonly used deno-minations

6 wwwpnr-nozzlescom CTG SH 07 EU

There are 4 principal types of temperature scales used for indicate the temperature CENTIGRADE CELSIUS FAHRENHEIT KELVIN and RANKINE Kelvin and Celsius scales are used in Europe Rankine Fahrenheit are used in Anglo-Saxons countries

MP = water melting pointBP = water boiling point

GENE

RAL

INFO

RMAT

ION SYMBOL NAME MP BP NOTES

degC Centigrade 0 100 0 and 100 are arbitrarily placed at the freezing point andboiling point of water

degF Fahrenheit 32 212

0degF is the stabilized temperature when equal amounts ofice water and salt are mixed 96degF is the temperatureldquowhen the thermometer is held in the mouth or under thearmpit of a living man in good healthrdquo

degK Kelvin 27316 37316Based upon the definitions of the Centigrade scale and theexperimental evidence that absolute zero is ndash27316deg Cand that is an international standard temperature point

degR Rankine 49167 67167 Based upon the definitions of the Fahrenheit scale andthe experimental evidence that absolute zero is ndash27316deg C

degC degF43 1094

44 1112

45 113

46 1148

47 1166

48 1184

49 1202

50 122

51 1238

52 1256

53 1274

54 1292

55 131

56 1328

57 1346

58 1364

59 1382

60 140

61 1418

62 1436

63 1454

64 1472

65 149

66 1508

degC degF67 1526

68 1544

69 1562

70 158

71 1598

72 1616

73 1634

74 1652

75 167

76 1688

77 1706

78 1724

79 1742

80 176

81 1778

82 1796

83 1814

84 1832

85 185

86 1868

87 1886

88 1904

89 1922

90 194

degC degF91 1958

92 1976

93 1994

94 2012

95 203

96 2048

97 2066

98 2084

99 2102

100 212

105 221

110 230

115 239

120 248

125 257

130 266

135 275

140 284

145 293

150 302

160 320

170 338

180 356

190 374

degC degF19 662

20 68

21 698

22 716

23 734

24 752

25 77

26 788

27 806

28 824

29 842

30 86

31 878

32 896

33 914

34 932

35 95

36 968

37 986

38 1004

39 1022

40 104

41 1058

42 1076

degC degF-10 14

-8 176

-6 212

-4 248

-2 284

0 32

1 338

2 356

3 374

4 392

5 41

6 428

7 446

8 464

9 482

10 50

11 518

12 536

13 554

14 572

15 59

16 608

17 626

18 644

CONVERSION FORMULAE TABLE

CELSIUS FAHRENHEIT KELVIN RANKINE

degC= -

degF - 32 K - 27316

R - 27316

18 18

degF= 18 degC + 32 18K - 45969 R - 45969

K= degC + 27316

degF - 32 + 27316

- R

18 18

degR= 18 (degC + 27316) degF + 45967 18K -

GENERAL INFORMATION Conversion table temperature scales

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GENERAL INFORMATION Metric and decimal equivalents of fractions of an inch

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METRIC AND DECIMAL EQUIVALENTS OF FRACTIONS OF ONE INCH

mm FRACTIONS OF ONE INCH INCHES

03969 164 0015625079375 132 00312511906 364 00468715875 116 00625 19844 564 0078125238125 332 009375 27781 764 0109375 31750 18 012535719 964 014062396875 532 01562543656 1164 017187547625 316 1364 0187551594 0203125555625 732 02187559531 1564 023437563500 14 02567469 1764 0265625 714375 932 02812575406 1964 029687 79375 516 0312583344 2164 0328125873125 1132 03437591281 2364 035937595250 38 037599219 2564 0390625

1031875 1332 040625107156 2764 042187111125 716 04375115094 2964 04531251190625 1532 046875123031 3164 0484375127000 12 05130969 3364 05156251349375 1732 053125138906 3564 054687142875 916 05625146844 3764 05781251508125 1932 059375154781 3964 0609375 158750 58 0625 162719 4164 064062 1666875 2132 065625 170656 4364 0671875 174625 1116 06875 178594 4564 0703125 1825625 2332 071875 186531 4764 0734375 190500 34 075194469 4964 07656251984375 2532 078125202406 5164 0796875206375 1316 08125210344 5364 08281252143125 2732 084375218280 5564 085937222250 78 0875226219 5764 08906252301875 2932 090625 234156 5964 0921875238125 1516 09375242094 6164 09531252460625 3132 096875250031 6364 0984375254000 1 10

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METRIC AND DECIMAL EQUIVALENTS OF FRACTIONS OF ONE INCH

mm FRACTIONS OF ONE INCH INCHES

03969 164 0015625079375 132 00312511906 364 00468715875 116 00625 19844 564 0078125238125 332 009375 27781 764 0109375 31750 18 012535719 964 014062396875 532 01562543656 1164 017187547625 316 1364 0187551594 0203125555625 732 02187559531 1564 023437563500 14 02567469 1764 0265625 714375 932 02812575406 1964 029687 79375 516 0312583344 2164 0328125873125 1132 03437591281 2364 035937595250 38 037599219 2564 0390625

1031875 1332 040625107156 2764 042187111125 716 04375115094 2964 04531251190625 1532 046875123031 3164 0484375127000 12 05130969 3364 05156251349375 1732 053125138906 3564 054687142875 916 05625146844 3764 05781251508125 1932 059375154781 3964 0609375 158750 58 0625 162719 4164 064062 1666875 2132 065625 170656 4364 0671875 174625 1116 06875 178594 4564 0703125 1825625 2332 071875 186531 4764 0734375 190500 34 075194469 4964 07656251984375 2532 078125202406 5164 0796875206375 1316 08125210344 5364 08281252143125 2732 084375218280 5564 085937222250 78 0875226219 5764 08906252301875 2932 090625 234156 5964 0921875238125 1516 09375242094 6164 09531252460625 3132 096875250031 6364 0984375254000 1 10

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METRIC AND DECIMAL EQUIVALENTS OF FRACTIONS OF ONE INCH

mm FRACTIONS OF ONE INCH INCHES

03969 164 0015625079375 132 00312511906 364 00468715875 116 00625 19844 564 0078125238125 332 009375 27781 764 0109375 31750 18 012535719 964 014062396875 532 01562543656 1164 017187547625 316 1364 0187551594 0203125555625 732 02187559531 1564 023437563500 14 02567469 1764 0265625 714375 932 02812575406 1964 029687 79375 516 0312583344 2164 0328125873125 1132 03437591281 2364 035937595250 38 037599219 2564 0390625

1031875 1332 040625107156 2764 042187111125 716 04375115094 2964 04531251190625 1532 046875123031 3164 0484375127000 12 05130969 3364 05156251349375 1732 053125138906 3564 054687142875 916 05625146844 3764 05781251508125 1932 059375154781 3964 0609375 158750 58 0625 162719 4164 064062 1666875 2132 065625 170656 4364 0671875 174625 1116 06875 178594 4564 0703125 1825625 2332 071875 186531 4764 0734375 190500 34 075194469 4964 07656251984375 2532 078125202406 5164 0796875206375 1316 08125210344 5364 08281252143125 2732 084375218280 5564 085937222250 78 0875226219 5764 08906252301875 2932 090625 234156 5964 0921875238125 1516 09375242094 6164 09531252460625 3132 096875250031 6364 0984375254000 1 10

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mm FRACTIONS OF ONE INCH INCHES

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LIQUID SPRAY AND SPRAY NOZZLESLiquid spray 9Spray nozzle types 11Spray nozzle coding 13Computerized fluid dynamics 14Spray generation 15Droplet spectrum 16Nozzle flow rate 19Spray angle 21Spray distribution 23Influence of liquid viscosity 27Influence of liquid specific gravity 29Jet impact 30Pressure drop through a nozzle 32

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A nozzle is a device which converts the energy from a fluid into velocity of the spray dropletsApplications in many industrial processes are numberless with spray nozzles being very often a critical component in determining the final quality of the product or the efficiency of the processFor this reason the available nozzle range types for industrial applications can be found in PNR nozzle catalogue as well as a concise but complete information about the most important parameters which can give a technical definition of a spray and its qualityWe have grouped in the following the most useful formulas for designing a spray system showing the influence of the different factors which can affect the process of sprayingMore information about the working life of a nozzle and the best suited material for a given purpose can be found at page 17 of this publication AlI the following data when not otherwise specified refer to spraying water at 15deg C

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LIQUID SPRAY AND SPRAY NOZZLES Liquid spray

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LIQUID SPRAY AS A PROCESS

The process of spraying a liquid can be described as composed of two phases namely

1 Breaking up the liquid into separated drops2 Directing the liquid drops onto a surface or an object to achieve the desired result

The above two phases are normally performed by the types of nozzles being used in industrial processes at the same time by means of different techniques which shall be illustrated in the followingThe continuous progress in the manufacturing techniques in recent years has requested the nozzle manufacturer to make available to the industry an always more complete range of spray nozzle types to perform the different processes in a more efficient wayIt is the interest of the engineer using spray nozzles in manufacturing processes to become familiar with the different types of nozzles which are available today and with their individual characteristics in order to be able to choose the nozzle which performs with the highest possible efficiency on a given application

Spraying a liquid through a spray nozzle can serve different purposes among which the most important are the following

1 Cooling by means of heat transfer between the product itself and the liquid running on its surface2 Washing where the water directed onto the product takes away dirt or undesired substances from the product surface3 Humidifying with sprays carrying very little liquid quantities to the product surfaceinto a chamber or into a room4 Metering the desired liquid quantity in a unit of time into the product being handled5 Applying a product on a surface as in the case of spray painting or surface pre-treatment before painting6 Increasing the liquid surface to speed up heat transfer processes or chemical reactions and many others in numerous applications throughout modern industry

It is self evident that the best results for every application are only obtained when the right choices in terms of nozzle type flow value spray angle drop dimensions and nozzle material are madeThe purpose of the following pages is to give the reader the basic knowledge which is needed to properly select a spray nozzle for a given application

Spray nozzles

a spray nozzle is a device which makes use of the pressure energy of a liquid to increase its speed through an orifice and break it into dropsIts performances can be identified and described precisely so that the design engineer can specify exactly the spray nozzle required for a given process

The relevant characteristics which identify the performances of a nozzle are the following

1 The liquid flow delivered as a function of the nozzle feed pressure2 The opening angle of the produced spray3 The nozzle efficiency as the ratio between the energy of the spray and the energy used by the nozzle4 The evenness of the flow distribution over the target5 The droplet size distribution of the spray6 The jet impact of the spray

The above characteristics will be discussed in the following pages in connection with the different nozzle types

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TECHNIQUES FOR SPRAY PRODUCTION

Many different techniques can be used to produce a spray and most of them are used today for nozzles to be applied in industrial processes Based on the different techniques the following nozzle types can be used in industrial applications to generate a liquid spray

1 Pressure nozzlesThis is the simplest type of nozzles where an orifice is opened into a chamber where the liquid to be sprayed is fed under pressure A spray is produced through the orifice with spray pattern flow rate and spray angle depending upon the orifice edge profile and the design of the inside pressure chamberTypical pressure nozzles are the flat jet nozzles series GA J GX and GY

2 Turbulence nozzlesIn these nozzles the liquid moving towards the chamber preceding the orifice is given a rotational speed component so as to open up in a conical shape as soon as it leaves the orifice edge because of centrifugal force Based on the nozzle design and the technique used to generate the rotational speed the drops produced can be confined to the cone outer surface (hollow cone spray) or be evenly distributed to fill the entire volume of the cone (full cone spray)

3 Impact nozzlesHere the desired spray shape is obtained producing an impact of the liquid jet onto a properly designed surface The liquid jet is subsequently changed into a fluid lamina and then broken into drops with the desired spray pattern after leaving the nozzle edge

4 Air assisted atomizersFine and very fine sprays can be obtained by means of air assisted atomizers working upon various different principles More detailed information about air assisted atomizing can be found in our Catalogue Air assisted atomizers (ordering code CTG AZ18)

LIQUID SPRAY AND SPRAY NOZZLES Liquid spray

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FULL CONE PATTERN

In a full cone spray the droplets are distributed into a volume which is limited by a cone having its origin point at the nozzle orifice Such spray pattern is commonly used in a large variety of industrial processes since it is the one which allows to distribute in an even way the water flow onto a surface the full cone spray pattern is therefore useful as a typical example to evenly spray cooling liquid on a still surface Another typical use is to distribute liquid droplets within a certain volume like for example evenly distributing water droplets in the inside volume of a cooling tower

Because of the wide number of processes performed by means of full cone nozzles the original shape has evolved into a range of specialised types where the full cone spray pattern or a pattern similar to a full cone one is obtained by different techniques

Standard full cone (turbulence nozzle)These nozzles use a specially shaped vane placed at the nozzle inlet to give a rotational speed to the fluid flowing through the nozzleBecause of the rotational speed of the fluid water exiting the nozzle orifice is subjected to centrifu-gal force and opens up in the shape of a full coneThe extent of the angle of the cone is a function of both exit speed (created from the inlet pressure) and the internal design of the nozzle It can vary in practice from 15deg to 120deg

These nozzles can be also produced as square full cone nozzles where the square shape of the pyramidal spray is obtained by a special design of the outlet orificeTwo important details have to be noted from the system designer when using these type of noz-zles

the spray angle is measured on the side of the square sectionbullthe square section of the spray rotates within the distance from the nozzle orifice to the bulltarget area

Spiral full cone (deflection nozzle)This is not properly a full cone but rather a continuous liquid curtain evolving with the shape of a spiral inside a conical volume The disadvantage of a scarcely even distribution is compensated by an exceptionally good resistance to plugging which makes this nozzle the best choice in those applications where safety or system reliability are the prime concern eg fire fighting systems

Multiple full cone (turbulence nozzle air atomizer)This spray pattern is used in two cases that is

1 When a wide spray angle is to be reached with nozzles which inherently can only produce a narrow one or in such cases where small size droplets and rather high capacities are required Therefore several nozzles are grouped in a cluster with different spray directions the resulting spray pattern occurs from the additional group of single nozzle sprays and the droplet size of the spray remains the same as one of single nozzle It must be noted that a smaller nozzle will normally make smaller drops as compared to a larger size nozzle of the same type operating under the same conditions

2 When it is necessary to obtain a wide angle jet using nozzles which inherently deliver a lim-ited angle spray In the case of a wide angle air atomizer for example the droplet distribution is obviously not homogeneous and the result is rather a number of small angle sprays with different directions but still the liquid is atomized towards all the parts of the volume to be treated

LIQUID SPRAY AND SPRAY NOZZLES Spray nozzle types

Standard full cone

Spiral full cone

Multiple full cone

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FLAT JET SPRAY PATTERN

In a flat jet spray the liquid droplets are sprayed in the shape of a flat liquid layer with different thickness according to the principle used to generate the spray A flat jet spray nozzle serves the purpose of spraying onto a surface or an object moving in a transverse direction with respect to the one of the jet surface a typical example being the nozzles in a car washing tunnel The vast majority of flat spray nozzles used in the industry work according to one of the following principles

In line flat jet (pressure nozzle)This is the general purpose flat jet nozzle where the liquid enters the nozzle in line with the axis length and is fed to a pressure chamber from where it is ejected through the nozzle orifice Flow value and spray angle are determined respectively from the orifice cross section and the orifice edge profile

In line straight jet (pressure nozzle)These nozzles can be considered a special kind of flat jet nozzle with naught degree spray angle They are designed to produce a sharp stable stream with powerful impact on a given point and serve normally to perform cleaning processes or to cut soft materials

Spoon flat jet (deflection nozzle)In this type of nozzle the liquid is fed under pressure to a round outlet orifice and then deflected onto a smooth profiled surface so as to assume a flat jet shape This sophisticated design is of advantage since it offers a stronger jet impact using the same feed pressureHigher efficiency comes from the very little energy required to just change the direction of the liquid flow this being the only energy required to generate the flat jet

HOLLOW CONE SPRAY PATTERN

A hollow cone spray pattern consists of droplets concentrated onto the outer surface of a conical shape volume with no droplets contained in the inside of the conical jet shape These nozzles are normally used for smoke washing or gas cooling applications in several industrial processes

Hollow cone (turbulence nozzle)These nozzles use a tangential injection of liquid into a whirling chamber to generate centrifugal forces which break up the liquid vein as soon as it leaves the orifice Precisely designed orifice profiles making use of the Coanda effect provides the ability to obtain very large spray angles

Hollow cone (deflection nozzle)A hollow cone can also be obtained taking a liquid flow to change direction onto a properly designed surface in order to break the liquid into droplets and distributing them as a hollow cone spray patternThis kind of nozzle is mainly used for applications in dust control and fire fighting systems

LIQUID SPRAY AND SPRAY NOZZLES Spray nozzle typesLI

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PNR CODING SYSTEM

As any other industrial product spray nozzles need to be precisely identified by means of a code in order to avoid mistakesPNR coding system has been designed with the following requirements in mind

Codes must be easily processed by a computer in ascending orderbullCodes must describe completely the product without any need for additional descriptionbullCodes must show to the user the basic specifications of the nozzle in order to ease the search in the cataloguebull

We have therefore determined our coding system described as follows

LIQUID SPRAY AND SPRAY NOZZLES Spray nozzle coding

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AA U X YB312 305

Thread type or other connection

Special features

Nozzle material code (see below)

The three digits give the nozzle capacity in lpm at 3 bar according to rank value

Rank of flow value see table below

Nozzle spray angle see table below

Nozzle type as described in the catalogue pages shown in ascending order

Nozzle tables report on a blue background the nominal flow value measured at 30 barFlow values at different pressures have been calculated

These codes serve as an indication onlyBased on different types of nozzles their significance can occasionally be different

CAPACITY RANK

Rank Flow digits Actual flow (lmin)

0 0 490 049

1 1 490 490

2 2 490 490

3 3 490 490

4 4 490 4900

SOME SPRAY ANGLE CODES (DEGREES)

A = 0 L = 40 T = 80

B = 15 M = 45 U = 90

C = 20 N = 50 J = 110

D = 25 Q = 60 W = 120

F = 30 R = 65 Y = 130

H = 35 S = 75 Z = 180

A1 Carbon steel D6 Glassfibre reinforced PP L2 Incolloy 825

A2 High speed steel D7 High density polyethilene L8 Hastelloy C276

A8 Zinc coated steel D8 Polyvinylidenefluoride (PVDF) P6 Acr But Styrene (ABS)

A9 Nickel coated steel E0 EPDM P8 EPDM 40 Shore

B1 AISI 303 Stainless steel E1 Polytetrafluorethylene (PTFE) T1 Brass

B2 AISI 304 Stainless steel E2 PTFE (25 glassfibers) T2 Brass chrome plated

B21 AISI 304 L Stainless steel E31 Acetalic resin (POM) T3 Copper

B3 AISI 316 Stainless steel E7 Viton T5 Bronze

B31 AISI 316 L Stainless steel E8 Synthetic rubber (NBR) T8 Brass nickel plated

C2 AISI 416 Stainless steel hardened F5 Ceramic T81 Brass electroless nickel plated

D1 Polyvinylchloride (PVC) F31 Ruby insert 303 body V1 Aluminum

D2 Polypropylene (PP) G1 Cast iron V7 Aluminum electroless n plated

d3 Polyamide (PA) H1 Titanium

D5 Talcum filled Polypropylene L1 Monel 400

NOZZLE MATERIAL CODES

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LIQUID SPRAY AND SPRAY NOZZLES Computerized fluid dynamics

The customers demand for an always higher efficiency requires to use not only the best tooling but in addition control instruments and design methods always more sophisticated like for example new software for obtaining the velocity distribution of a fluid flowing through a conduit

These software programs require that the geometry of the inner con-duit to be geometrically defined and in addition the process conditions ( pressure temperature fluid capacity ) and the fluid properties ( specific weight viscosity ) to be Introduced

Based on the above data it is pos-sible to obtain a very precise dis-tribution for the velocity value in each single point of the conduit both under numeric form and flow diagramsThese Information make it possi-ble as an example to minimize the flow turbulence and consequently to Increase the nozzle efficiency through an increase in the fluid exit velocityThis is of basic Importance for some kind of nozzles for example those nozzles required to supply an high impact jet when performing descal-ing processes in a rolling millBy trial and error it is also possible to eliminate problems like jet Instability or cavitation

The overall process efficiency in the flow path before the nozzle can also be considered which often results into the design of geometry modifi-cation or the Introduction of special flow improving profiles along the conduit

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The diagram on the right shows the idealization of the process generating the droplets while the water jet exiting the nozzle is breaking up The theoretical model whose exactitude seems to be confirmed by scientific research considers that the liquid flowing through the nozzle and past the orifice edge evolves into a liquid lamina This lamina because of instability induced by aerodynamic forces breaks up first into elongated ligaments more or less cylindrical and later into droplets

Taking the above process as a guideline one can easily appreciate that the average droplet diameter is some what related to several factors like

1 The thickness of the lamina itself2 The evenness of the lamina 3 A steady flow and break up process

For what has been said above and limited to hydraulic nozzles the system designer looking for fine droplet sprays should consider that the following results can be expected

Impact nozzles best

Centrifugal hollow cone nozzles multiple full cone nozzles good

Turbulence nozzles fair

Centrifugal Vaneless full cones worst

The above choice is obviously based on the droplet generation process which changes from one nozzle type to another and allows to forecast which type is best fro the applicationAn additional consideration of interest is that the expected droplet size changes for the same type of nozzle with the nozzle size it is possible to generate smaller drops spraying the same water quantity at the same pressure using a greater number of smaller nozzles

In cases where energy requirements are not a problem or where a specified small droplet diameter is required the smal-lest droplets can be obtained by means of an air assisted atomizerHere the shear action of a high speed compressed air flow is used with several different techniques to obtain a value for SMD (Sauter Mean Diameter) of 50 microns and less

LIQUID SPRAY AND SPRAY NOZZLES Spray generation

Theoretical Mechanism of droplet generation

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SLIQUID SPRAY AND SPRAY NOZZLES Droplet spectrum

The atomization of a liquid by means of a compressible fluid like air steam or a gas is defined pneumatic two-phase or twin-fluid atomization Many industrial processes require the availability of finely atomized droplets and the techniques to produce atomized jets have been largely improved in the recent years In addition more sophisticated process techniques have incre-ased the demand for a precise definition about the characteristics of the spray and are now available to the design engineer Since many years PNR can supply upon request complete documentation containing test reports about the more interesting and additional information which are described below for all PNR products

Laser Interpherometer Test (By Pdpa)

PNR droplet size test reports are performed by means of a Laser Interpherometer (Phase Doppler Particle Analyzer) where two laser beams cross in a given point of the spray and define a test probe area Droplet flying through the probe area cause a light scatter which is picked up by the instrument receiver and processed through a computer in order to obtain relevant information about the spray characteristics

Report information

Report information is made of data printed on three pages where the first page contains the most interesting data which make possible to base process calculations upon precise data about spraying degrees process efficiency and jet behavior in operational ambiance These pages contain the Sauter Mean Diameter value whose knowledge is of special importance in heat exchange calculations about evaporative gas cooling processes since it gives the possibility of evaluating the exchange surface obtained by atomizing for a given liquid volume

The upper picture at page 18 referring to atomizing water by means compressed air shows two following histograms

bull Distribution curve of droplet diameter (micron)

bull Distribution curve of droplet velocities (mps)

and the below described values

bull Arithmetic Mean Diameter (D10)

bull Surface Mean Diameter (D20)

bull Volume Mean Diameter (D30)

bull Sauter Mean Diameter (D32)

ARITHMETIC MEAN DIAMETERThis is a diameter value which multiplied by the local num-ber of droplets in the sample equals the addition of alI droplets diameters

SURFACE MEAN DIAMETERThis is the diameter of such a droplet whose surface mul-tiplied by the total droplets number equals the sum of alI droplets surfaces

VOLUME MEAN DIAMETERThis is the diameter of such a droplet whose volume mul-tiplied by the total droplets number equals the sum of all droplets volumes

SAUTER MEAN DIAMETERThis is the diameter of such a droplet whose volumearea ratio equals the ratio between the sum of alI droplet volu-mes divided by the sum of alI droplet surfaces

D10 = Σ i ni di

Σ i ni

D20 = Σ i ni di

2

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3

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AttemptsDroplet number crossing probe area during test time This includes both validated and not validated droplet

Correct Count Criteria A mathematic correction is applied to validate droplets which cross Probe Area in a peripheral belt or to droplets without a perfect spherical shape so that alI validated droplets parameters are homogeneous (This correction is necessary so that there is direct proportionally between laser beam phase and droplet number diameter)

Number Density It is the number of droplets passing through probe area within test time

Probe areaThis is the area where the two laser beams are crossing so determining the probe area AlI droplets intersecting probe area are checked droplets which respect given parameters for shape are taken as valid droplets and make up the sample whose size and velocity parameters are reported

ValidationsDroplets accepted based on given shape parameters to make up for test sample

Velocity MeanDroplets distribution speed histogram (ms)

Volume Flow RateIt is the volume measured in cubic centimeter per second of the validated droplets making up for the sample

Volume FluxIt is the flow rate per specific area measured in cubic centimeter per second and square centimeter of the validated droplets making up the sample

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LIQUID SPRAY AND SPRAY NOZZLES Droplet spectrum

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SLIQUID SPRAY AND SPRAY NOZZLES Droplet spectrum

PNR can supply upon request complete documentation con-taining test reports about the aforementioned parameters and additional information for all PNR atomizersThe diagrams beside show the distribution of droplet diameters and droplet velocities of a spray under test as available to our customers

In the photo beside a test being performed at our laboratoriesWe use a computer driven laser interpherometer to detect and record the spray parameters while fluid capacities and feed pressure values are monitored through high precision instru-ments

IMPORTANT NOTE

The droplet size values measured with a PDPA instrumentation are representative of a well specified volume inside the spray and taking measurements in a different volume they can be considerably differentA correct spray droplet size characterization requires then not only tests being performed in several volumes within the spray but also that those measure volumes are selected with regard to the process the droplets are expected to performAs an example the droplet characterization of a spray should define how many volumes have been tested and which are the coordinates of each single test volume in relation to the nozzle orifice

Most of the times pretending to describe the droplet spectrum of a spray nozzle at a given pressure with only one diagram is therefore not correct

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In order to calculate the discharge flow rate from a given nozzle the Bernoulli law shall be used which says that the energy of a liquid flow remains unchanged over alI the sections of the flow Friction and turbu-lence losses are neglected which is reasonable for our purposes if the cal-culation is performed over two sections not too far away from each other

The Bernoulli law can be written as follows

Therefore if we consider two sections of the same pipe section A and section B we can write that the flow energy remains constant in the form

If we finally consider that the two above sections are taken immediately before and immediately after the nozzle outlet orifice being

ZA = ZB PB = 0 (PA is a differential pressure referred at the atmosphere pressure)

VA cong 0 negligible as compared to VB (for orifice diameter much smaller than the duct diameter)

we shall come to the formula

When we define a new constant k to include the value of the nozzle orifice outlet area (A) then we come to the following equation which says that for a nozzle spraying into a room at ambient pressure the exiting flow is proportional to the feed line pressure

Considering now two different pressure values for the same nozzle since k is a constant quantity we can write that

and derive from the above an equation that makes it possible to calculate the nozzle flow value at any given pressure value once the flow value at another pressure value is known

The energy of a given liquid flow crossing a given pipe section is composed of three parts namely

P Pressure energy of liquid particle per volume unit

1 ρV2 Kinetic energy of liquid particle per volume unit2ρgz Potential Energy of liquid particle per volume unit

Where ρ = density of liquid g = gravitational acceleration

z = height respect to one plane of reference V = liquid velocity

PA = 1 ρVB 2 rArr

2

K = Q rArr

PK =

Q1 = Q2 rArr

P1 P2

Q = A V rArr

Q = A x C x P rArr

1 P + 1 ρV2 + ρgz = E

2

VB = 2 PA rArr ρ

Q1 = P1

Q2 P2

3 V = C P

4 Q = K P

2 PA + 1 ρVA 2 + ρgzA = PB + 1 ρVB

2 + ρgzB 2 2

EXIT VELOCITY DEPENDS UPON PRESSURE

NOZZLE CAPACITY DEPENDS UPON PRESSURE

NOZZLE CAPACITYAT A DIFFERENT PRESSURE

5 Q2 = Q1 P2

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LIQUID SPRAY AND SPRAY NOZZLES Nozzle flow rate

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SLIQUID SPRAY AND SPRAY NOZZLES Nozzle flow rate

The Equation (5) has been obtained after having simplified the real problem neglecting several factors like for examplebullInmostofthepracticalapplicationcasestheflowisturbulentandnotlaminarbullFrictionlossestendtostronglyincreasewithliquidvelocitybullDependinguponthetypeofnozzleadifferentpercentageoftheavailableenergyisusedtobreakupthejetandgivethe

desired spray pattern and spray angle

For the above reason equation (5) gives reliable results if used in a limited pressure range around the pressure value where the flow rate is known with this pressure range depending upon the type of nozzleOur experience has shown that one can expect the error in the calculated value to be lower than +- 6 for pressure values ranging from 13 to 3 times the reference value

As an example a nozzle rated for 10 lpm at 3 bars would have according to equation (5) the following flow valuesa 1 bar 577 lpma 9 bar 173 lpmin real conditions it can be expected the flow rate values to beas high as 61 lpm a 1 baras low as 162 lpm a 9 barAbove considerations are to be used as a guideline only because of the many factors influencing real operations which have not been considered here for example liquid temperature viscosity and density

Possible percentage deviation from theoretical flow rate values

Also above mentioned percentage errors have to be understood for nozzles using part of the flow energy to produce wide angle spray patternsLower values can be expected for narrow angle nozzles impact nozzles and straight jet nozzles Laboratory tests and diagrams showing real flow rate values for each nozzles are used in practice when a precise result must be available

Nozzle discharge coefficient

With reference to equation (4) if we consider the pressure value to be equal to 1 (P = 1 bar) the flow rate of the nozzle becomes

K is a parameter widely used in the fire fighting industry

In some instances reference is made to the nozzle discharge coefficient or shortly to the nozzle coefficient to indicate the nozzle flow rate for a unitary pressure Of course for a given pressure value Pn the flow value will be

+ 6

+ 3

- 3

- 6

CAPACITY AT A GIVEN PRESSURE VALUEWHEN K KHOWN

NOZZLE CAPACITYFOR P=1 barQ = K P = K 1 = K

6 Qn = K Pn

21wwwpnr-nozzlescomCTG SH 07 EU

The spray angle is the opening angle which the nozzle jet of droplets forms at the moment when it leaves the nozzle orifice and it is one of the fundamental parameters for the choice of a given nozzleIn fact the amplitude of the spray angle determines in connection with the distance between the nozzle orifice and the target to be covered the spray coverage and the density of liquid sprayed with respect to the cover area See our Catalogue for description of the different nozzle spray patterns The table at the bottom of the page gives the theoretical spray width based on the nozzle spray angle and the distance from the nozzle orifice It is important to note that because of several factors like gravity forces and aerodynamic drag the spray angle value cannot be maintained but in in a limited distance normally up to 300 mm from the orifice For air assisted atomizers it is improper to use the term spray angle since no precise value can be measured Therefore the values given by Catalogues are to be intended as guidelines only

THEORETICAL SPRAY COVERAGE

at various distances from nozzle orifice

Spray 50 100 150 200 250 300 400 500 600 700 800 1000 Angle mm mm mm mm mm mm mm mm mm mm mm mm

15deg 13 26 40 53 66 79 105 132 158 184 211 263 25deg 22 44 67 89 111 133 177 222 266 310 355 443 30deg 27 54 80 107 134 161 214 268 322 375 429 536 35deg 32 63 95 126 158 189 252 315 378 441 505 631 40deg 36 73 109 146 182 218 291 364 437 510 582 728 45deg 41 83 124 166 207 249 331 414 497 580 663 828 50deg 47 93 140 187 233 280 373 466 560 653 746 933 60deg 58 116 173 231 289 346 462 577 693 808 924 1150 65deg 64 127 191 255 319 382 510 637 765 892 1020 1270 70deg 70 140 210 280 350 420 560 700 840 980 1120 1400 75deg 77 154 230 307 384 460 614 767 921 1070 1230 1530 80deg 84 168 252 336 420 504 671 839 1010 1180 1340 1680 90deg 100 200 300 400 500 600 800 1000 1200 1400 1600 2000 95deg 109 218 327 437 546 655 873 1090 1310 1530 1750 2180 100deg 119 238 358 477 596 715 953 1190 1430 1670 1910 2380 110deg 143 286 429 571 714 857 1140 1430 1710 2000 2290 2856 120deg 173 346 520 693 866 1040 1390 1730 2080 2430 2771 3464 130deg 215 429 643 858 1070 1290 1720 2150 2570 3002 3431 4289

WhereASCbull = Actual Spray CoverageTSCbull = Theoretical Spray CoverageASAbull = Actual Spray AngleTSAbull = Theoretical Spray AngleL bull = Spray Distances

TSC = 2 middot L middot ctan ( TSA )2

7

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S

LIQUID SPRAY AND SPRAY NOZZLES Spray angle

22 wwwpnr-nozzlescom CTG SH 07 EU

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SLIQUID SPRAY AND SPRAY NOZZLES Spray angle

Depending upon the nozzle design variations of feed pressure may have a great influence on the spray angle valueGenerally with increasing pressure turbulence full cone nozzles will produce narrower angles flat jet nozzles will show a wider angle spray while nozzles working on the deflection principle like spiral nozzles and K style flat jet nozzles will be less affected by pressure changesAll nozzles will not function properly with very low pressure values (from 05 bar down depending upon nozzle type ) with a marked decay in performance larger drops not well defined spray pattern lower spray angle values

The above pictures show spray angles for different nozzles and different pressure valuesShould your application strictly require that a given value of the spray angle is obtained under a given pressure value or pressure range of values please obtain a test report from our laboratories

Full cone nozze DDW 2235

Flat jet nozzleJCW 2245

Spiral nozzeECW 2230

Pressure 05 bar Pressure 05 bar Pressure 05 bar

Pressure 3 bar Pressure 3 bar Pressure 3 bar

Pressure 10 bar Pressure 10 bar Pressure 10 bar

Photo obtained with 120000s flashlight

picture 1

picture 4

picture 7

picture 2

picture 5

picture 8

picture 3

picture 6

picture 9

NotePicture 2 shows clearly the droplet generation mechanism as described at page 15

23wwwpnr-nozzlescomCTG SH 07 EU

Terms and definitions

A very important characteristic of a spray nozzle is a parameter called Spray Distribution which gives a precise information about how evenly the drops of the spray are distributed onto the area covered by the sprayIt is self understood that normally it is preferable to obtain the most even distribution possibleIn the past this was done through the visual examination of a diagram reporting the quantity of water contained for example in glass pipes aligned onto the spray coverage areaPnr has determined to obtain such a result in a scientific way through high technology instrumentation as shown in the pictures below showing one of our patternators and a typical distribution diagram

Now to the spray geometry and some definition letrsquos consider a nozzle with a capa-city Q at the pressure PAt every value for distance H which we call height of spray we can define a plane lsquonrsquo normal to the nozzle axis on which a line can define the intersection of the spray onto the planeThe area covered by the spray on the plane lsquonrsquo has a surface S depending from the following parametersa) Spray pattern Fb) Opening angle of the spray αc) Height of the spray H

We can then write S=S( F α H )

In case of a full cone nozzle S is a circle with diameter C and S = 0785 C2

The capacity of the nozzle flows through the surface S but each smaller area inside the surface S will probably have a different value for the flow passing through itWe introduce then the value of Specific Capacity q

1) Specific Capacity

The function q depends upon the single point (xy) in the section S and then

Determining the function q is however very expensive therefore in practice two different functions are used which give in most occurrences sufficient information

2) Linear Distribution

3) Angular distribution

part Qpart x

qx =

Diagram 1

q = limΔS 0

ΔQΔS

q = = f (x y H)part Qpart S

part Qpart φ

qφ =

ΔQ is the liquid flowing through a surface ΔSwhere ΔS is a fraction of the surface S

x and y are the local coordinates in the section planewhere H is the distance of the test surface from the nozzle orifice

partQ is the variation in capacitywhere partx is the variation of a generic linear coordinate

partQ is the variation in capacitywhere partφ is the variation of a generic angular coordinate

LIQU

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LIQUID SPRAY AND SPRAY NOZZLES Spray Distribution

24 wwwpnr-nozzlescom CTG SH 07 EU

LIQUID SPRAY AND SPRAY NOZZLES Spray Distribution

Values extracted from these functions can characterize the spray and allow for drawing the diagrams defined as Distribution Curves

Analyzing the above curves it is possible to determine the type of water distribution along the spray coverage and the type of spray pattern like for example a full cone hollow cone flat or straight jet spray

Distribution measurement

The water distribution along the spray coverage is determined by means of an instrument called Patternator

A patternator consists of the following parts 1) Liquid collector2) Cell block3) Measure block4) Unloading block

The nozzle is above the instrument and it is orienta-ted in such a way the jet is collected into the upper liquid collectorThe liquid collector can be linear ( diagram 5 ) or round ( diagram 6 ) according to the test being runFrom the single parts in the collector the liquid is sent into the corresponding cells below (2)

The Measure block (3) determines the liquid content in each single cell then the unloading block (4) empties the instrument sending the liquid to the collection drain

There are two types of patternators

Analogic1 the different levels of liquid is visible through the transparent walls of the cells or pipes sometimes containing some kind of floating balls and a picture can be taken with a cameraDigital2 Delivering an automatic reading of the values in the cells the values being supplied as an electronic file from which a distribution curve can be easily obtained

Diagram 2 Linear distribution Diagram 3 Angular distribution

Diagram 4

Diagram 6 Circular collectorDiagram 5 Linear collector

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25wwwpnr-nozzlescomCTG SH 07 EU

LIQUID SPRAY AND SPRAY NOZZLES Spray Distribution

Normalizing distribution curve

The values obtained from the cells of the patternator showing the water quantity collected in the single cells allow for preparing a Distribution curve which can be given as a single line curve or as a row of vertical barsThese resemble the liquid level collected into the glass pipes of the old type instrumentation

The curves prepared based on the liquid level in the single cells still are not precise they depend in fact from the testing time the longer this time the larger the liquid quantity sprayedTo eliminate the influence of time from the test it is necessary to transform the effective curves to normalized curves

Normalized4) linear distribution

Normalized5) angular distribution

Please note that Maximum value is the one belonging to the series of values measured in the cellsIn addition to the distribution it is possible to normalize the intervals to with the following formulas

Normalized 6) linear interval

Normalized 7) angular interval

The linear normalized amplitude is defined inside an interval [-1 +1]The angular normalized amplitude is defined inside an interval [0+2π]

Diagram 7 Effective linear distribution curve Diagram 8 Effective angular distribution curve

Mx

xx q

q=δ

N

πθ

2=Δ

Diagram 9 Normalized linear distribution curve Diagram 10 Normalized angular distribution curve

qx is the linear distribution of a generic cellwhere qx

M is the maximum linear distribution measured

qφ is the linear distribution of a generic cellwhere qφ

M is the maximum linear distribution measured

2 is the normalized linear amplitude of the spraywhere N is the number of active cells (active cells = cells containing liquid)

2π is the normalized angular amplitude of the spraywhere N is the number of active cells (active cells = cells containing liquid)

Mq

q

ϕ

ϕϕδ =φ

φ

φ

2

N=Δλ

2

N=Δλ

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26 wwwpnr-nozzlescom CTG SH 07 EU

Evaluation of spray distribution

To evaluate distribution curves it is necessary to take three properties into consideration

a) UNIFORMITY b) MONOTONY c) SIMMETRY

As described in the following diagrams and definitions

a) UNIFORM A distribution that minimizes the ratio AAdeg

b) MONOTONE Is a distribution with a curve which grows on the left side and decreases on the left side c) SYMMETRIC Is a distribution which minimizes the Ratio A+A-

Based on the above definitions the following curves show the ideal situations

The three properties are then evaluated by means of the following parameters

1 Integral uniformity

2 Incremental uniformity

3 Symmetry index

Complete details about the above formulas and definition can be found in our Technical Bulletin REL 080002 which shall be released from our Technical Department on request

Diagram 12Normalized and monotone distribution

Diagram 11Normalized and monotone distribution

Diagram 14Ideal monotony

Diagram 15Ideal symmetry

Diagram 13Ideal uniformity

1001 sdot=MA

AU

1002

2 sdot=lowastσ

U

1001

sdot⎥⎦

⎤⎢⎣

sdotminus=

lowast

lowast

δ

ε

NI S

sum minus=lowast

M

i iδδε

A is the area included in the normalized curvewhere Adeg is the rest of the area included in the 2x1 rectangle

Left side is the area -1 0where Right side is the area 0 +1

A+ is the area included below the curve on the right sidewhere A- is the area included below the curve on the left side

where

where δrsquo is the value of normalized liquid content in the symmetric cell N number of cells containing liquid in half of the diagram

lowast

lowast sum=

N

N

i i

δ

δ N Number of cells containing liquid

A area included below the curve AM area included below the ideal curvewhere

sum minus= +lowast

1

N

i ii δδσ

N Number of cells containing liquid

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SLIQUID SPRAY AND SPRAY NOZZLES Spray Distribution

27wwwpnr-nozzlescomCTG SH 07 EU

Liquids are characterized for their property of undergoing continuous deformation when subjected to shear stress The property of fluids (liquids or gases) to resist flowing due to the existence of internal friction within the fluid is called visco-sity

Thus if we imagine the different layers of fluid sliding one over the other with friction we can imagine that viscosity is defined the force required to move a unit area of fluid for a unit distance Viscosity is measured with many different systems among which the most used are the following

The following table shows correspondences between the most used viscosity units

The viscosity value of a liquid depends upon the temperature therefore the viscosity value must always be given with reference to a temperature value The viscosity of water (20deg C) is 1 Centipoise and 1 Centistoke since water mass density = 1

KINEMATIC SAYBOLT SAYBOLT ENGLER VISCOSITY UNIVERSAL FUROL

Centistoke Sq feetsec SSU SSF Degrees

100 000001076 310 --- 100

500 000005382 424 --- 137

1000 00001076 588 --- 183

1566 00001686 80 --- 245

2052 00002209 100 --- 302

2515 00002707 120 --- 357

4295 00004623 200 --- 592

1080 0001163 500 523 1460

1510 0001625 700 720 2044

1942 0002090 900 921 2628

3023 0003254 1400 143 4090

3885 0004182 1800 183 5260

5394 0005806 2500 254 7300

10788 001161 5000 509 146

15103 001626 7000 712 204

19419 002092 9000 916 263

32365 003483 15000 1526 438

METHOD UNIT DIMENSIONS NOTES

1 Dynamic viscosity(Absolute viscosity) Poise ML T-1 Poise = 100 Centipoises = (1 dyne per seccm2)

2 Kinematic viscosity Stoke L2 T-1 1 Stoke = 100 Centistoke = (cm2sec)Kinematic viscosity = Dynamic viscositydensity

3 SSUSSF

One of the most widely instruments to determine is the Saybolt viscosimeter which measures the time in seconds required for a fixed volume of a given liquid to flow through an orificeSSU = Seconds Saybolt Universal relates to a smaller orifice for less viscous liquidsSSF = Seconds Saybolt Furol relates to a larger orifice for more viscous liquids

LIQUID SPRAY AND SPRAY NOZZLES Influence of liquid viscosity

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28 wwwpnr-nozzlescom CTG SH 07 EU

Viscosity influence on nozzle flow rate

AlI nozzle Catalogue data refer to spraying water (water cinematic viscosity is equal to 1 Centistoke)A liquid with viscosity higher than water will require more energy to be pumped and sprayed and will flow with lower velocity at the same pressure and this will cause a reduction in the turbulence of the flow For the above reason nozzles working on the turbulence principle like normal full cone nozzles and whirl hollow cone nozzles will show an increase in capacity while spraying liquids with viscosity higher than water This increase is very consistent for small size nozzles where the small radius of the whirl chamber tends to cause high turbu-lence in the flow and tends to diminish and to disappear for nominal capacity valves (capacity values at 3 bar) larger than 15 liters per minute

The graph below shows for a liquid with a viscosity of about 4 Centistokes typical variations in the nozzle flow rate value for different values of the nozzle whirl chamber diameter As it may be seen these variations can be neglected in most practical applications where nozzles with whirl chamber diameters well over 3 mm are used

For other types of nozzles not working on the turbulence principle the increase on viscosity will simply reduce the liquid exit velocity at the orifice thus causing a decrease in capacity Experience shows that this decrease ranges between 3 and 6 of nominal water capacity that is to say that the variation introduced is in the same order of magnitude as the nozzle flow rate toler-ance

Viscosity influence on nozzle spray angle and spray pattern

With reference to the theory of jet break-up and droplet information it can be easily imagined that spraying a liquid more viscous than water is a difficult task

Al the properties of the spray tend to worsen therefore one can expectA higher value for the minimum operating pressure that is the pressure value which allows for obtaining a well defined 1 spray with the expected spray angle A worse spray distribution since the viscous behavior of the liquid makes it more difficult to pro-duce fine droplets and 2 to distribute them evenly with the desired spray pattern A narrower spray angle It is difficult to give guidelines since results on different nozzles at different pressures and with 3 different liquids are scarcely predictableHowever our experience shows that in many cases the use of impact nozzles can give acceptable results where all other type of nozzle failsA laboratory test or a field test are stili the safest way to obtain sound results

50

45

40

35

30

25

20

15

10

5

0 2 3 4 5 6 7 8 9

Increase Flow rate vs Whirl Chamber Diameter

Incr

ease

Flo

w R

ate

[mm

]

Whirl Chamber Diameter [mm]

LIQUID SPRAY AND SPRAY NOZZLES Influence of liquid viscosityLI

QUID

SPR

AYAN

D SP

RAY

NOZZ

LES

29wwwpnr-nozzlescomCTG SH 07 EU

With reference to the Bernoulli Rule as exposed in page 6 one can say that the pressure energy of the liquid flow at the nozzle inlet is transformed totally (minus some losses due to friction inside the nozzle) into liquid velocity at the nozzle orificeCatalogue figures give nozzle capacities when spraying waterIf the specific gravity or density of the liquid is different from that of water the available pressure energy will produce a different liquid velocity at the nozzle orificesIn other words a given quantity of energy will spray always the same quantity of liquid mass but different volumes (flow rates) according to the liquid specific gravity or density

Therefore a liquid heavier than water will exit the nozzle with a lower velocity at lower flow rate while to the contrary a liquid lighter than water will be sprayed at higher velocity at higher flow rate

The following formula is to be applied

The table below gives the value of a correction factor to obtain the flow rate of a liquid with different specific weight as water

WhereQL Liquid flow rateQW Water flow rateF Correction factor

kgliter Libregallon F

06 50 129

07 58 120

08 67 112

09 75 105

10 83 100

11 92 095

12 100 091

13 109 088

14 117 085

15 125 082

16 134 079

17 142 077

18 150 075

19 159 073

20 167 071

QL = F QW8

LIQUID SPRAY AND SPRAY NOZZLES Influence of liquid specific gravity

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30 wwwpnr-nozzlescom CTG SH 07 EU

The spraying water impact of a nozzle depends on several factors and more precisely spray distribution pattern and spray angle The first step to calculate the impact value which is usually expressed in Kilograms per square centimeter is to deter-mine Total Theoretical lmpact Value using the following formula

The obtained value has to be multiplied by the Total Theoretical Impact per Square Centimeter Coefficient (E)The final value is the Spraying Liquid Impact expressed in kgpcm2Of course not alI the energy of the fluid vein is transferred to the impact point

A part of this energy sometimes a considerable part goes to obtain a desired spraying angle by having the liquid vein acquire a high rotational speed inside the whirl chamber The highest value of impact is obtained with straight jet nozzle and the value can be calculated multiplying spraying pressure per 19The tables below containing the Total Theoretical Impact sqcm coefficient values for different spray pattern nozzles for a dis-tance of 300 mm

[kgpcm2]

TOTAL THEORETICAL IMPACT PER SQ CM COEFFICIENT AT DISTANCE OF 300 MM (E)

Spray Flat jet nozzle Spray Full cone nozzle Spray Hollow cone nozzle Angle Angle Angle

15deg 0300 15deg 0110 25deg 0180 35deg 0130 30deg 0025 40deg 0120 50deg 0100 50deg 0010 65deg 0070 65deg 0004 60deg80deg 001002 80deg 0050 80deg 0002 100deg 0001

WhereQ is the flow rate at working pressure in lpmP is the pressure value in kgpcm2

[kgpcm2]TTI = 0024 Q P

SLI = E TTI

9

10

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SLIQUID SPRAY AND SPRAY NOZZLES Jet impact

31wwwpnr-nozzlescomCTG SH 07 EU

Jet impact diagram

A further parameter to characterize the performance of a spray nozzle is the distribution of the jet impact force which could be derived by means of mathematical methods from the values of the spray distribution onto the surface covered by the spray but which can more easily be measured with the help of specifically designed instrumentation

In some applications the jet impact force Is the most important parameter used to realize the required processSteel sheet descaling in a rolling mill is a typical example where the jet impact is required to take away the surface scale and obtain a perfectly even surfaceFor that reason special nozzles have been developed to perform this very task where service life impact value and spray distribution reach the values required for satisfactory resultThese test are performed in a laboratory equipped with a specifically designed instrumentation where the high pressures involved in these process can be reached which can measure the pressure values along a matrix of points distributed in the spray area covered by the nozzle

These values are supplied both in a table of values and as a 3D pressure diagram similar to those shown below

On such applications where producing high impact values in the jet is necessary it is of paramount importance that the liquid flow turbulence is kept to a minimum and therefore it is widely used to insert into the nozzle entrance devices designed to improve the operating conditions by forcing the liquid flow through straight passages with several different shapes by doing so the impact delivered by the spray is increased with the same feed pressure

One typical shape used by Pnr is shown on the right and the two dia-grams below show the impact force diagrams for the same nozzle with and without a flow straightener the reduction of flow turbulence can lead in increase of impact force often higher than 20Further improvements of course are available when the nozzle inside profile is properly designed in order to avoid sharp cross section changes and all surfaces are finished as smoothly as possible

Typical design of a Pnr flow straightener

Impact pressure diagram with flow straightenerImpact pressure diagram without flow straightener

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LIQUID SPRAY AND SPRAY NOZZLES Jet impact

32 wwwpnr-nozzlescom CTG SH 07 EU

LIQUID SPRAY AND SPRAY NOZZLES Pressure drop through a nozzle

Pressure drop through a nozzle

Some of our customers have asked us In the past which Is the pressure drop through a nozzle since they consider a nozzle one of the parts in a piping like a valve or an elbow which causes a given pressure drop along the line

The reality is different and can be easily understood when considering the Bernoulli formula [2] as given at page 19 of this manual the formula says that the total energy of a liquid flow is made from the addition of three facors

Potential energy due to elevationbullPressure energybullVelocity energybull

When we apply the formula at the entrance and at the outlet ( the orifice ) of a nozzle and we neglect the influence of turbulence losses in between we can easily see that

The potential energy variation can be neglected because of the limited dimensions of the nozzle since the distance bullbetween the nozzle entrance and the nozzle orifice plays no role-The pressure energy variation is important since the liquid pressure value falls abruptly from the pressure inside the feed bullpipe to the ambient pressureThe velocity energy variation is also consistent since the liquid is ejected from the orifice at high speedbull

In other words the pressure energy of the liquid flowing through the orifice is suddenly transformed in liquid drops velocity which is exactly what a nozzle is designed to do

This is shown from equation [3] at page 19 which allows the exit velocity from the nozzle to be calculated from the pressure inside the pipe ( we actually consider the pressure difference between the inside of the pipe and the ambient pressure in this formula )

In other words all the energy still available at the nozzle is converted into velocity or if you so prefer you have a total pressure fall The system designer shall therefore evaluate all the pressure drop between the pump outlet flange and the nozzle entrance in order to be sure that the nozzle feed pressure is sufficient to assure the desired capacity for the liquid being sprayed

parameters valuesat nozzle outlet

nozzle inlet nozzle oulet or orice

feed pressure

inlet velocity

parameters valuesat the nozzle inlet

(A)potential elevation

energy

(A)velocity ( kinetic ) energy

(A)pressure energy

ambient pressure

exit velocity

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33wwwpnr-nozzlescomCTG SH 07 EU

NOZ

ZLE

MAT

ERIA

LS

The choice of the right material for a nozzle is sometimes the most important one to do since the nozzle operating life depends upon it There are several factors to influence or shorten the nozzle operating life sometimes more than one at the same time the most important being

Wear from solid particles suspended into the liquid being sprayed1 Chemical corrosion from the liquid being sprayed 2 Chemical corrosion from the ambience outside the nozzle3 Exposure to high temperature 4 Exposure to mechanical shocks5

NOZZLE MATERIALSPnr material codes 34Properties of materials 35Mechanical properties of materials 39Chemical resistance of materials 40

NOZZLE MATERIALS

34 wwwpnr-nozzlescom CTG SH 07 EU

PNR has adopted a short code to identify construction materials for nozzles and nozzle partsHere below the most frequenty used materials

MATERIAL STANDARDS

The following standards are mentioned with reference to materials identification

NOZ

ZLE

MAT

ERIA

LS

A1 Free Cutting Steel E1 TEFLONreg (PTFE) L3 NICROFERreg 5923

A2 Carbon Steel E3 DELRINreg (POM) L4 STELLITEreg 6

A8 Zinc Plated Mild Steel E6 PERSPEXreg (PMMA) L5 HASTELLOYreg B2

A9 Nickel Plated Mild Steel E7 VITONreg (FPM) L6 HASTELLOYreg C4

B2 AISI 304 Stainless Steel E8 NBR- Sh 70 Rubber L61 HASTELLOYreg C22

B3 AISI 316 Stainless Steel E81 SANTOPRENEreg Rubber L62 ULTIMETreg

B31 AISI 316L Stainless Steel E82 KLINGERITEreg L7 NICKEL 201

B4 AISI 321 Stainless Steel E83 HYPALONreg L8 HASTELLOYreg C276

B8 AISI 309 Stainless Steel E91 Silicon L9 SANICROreg 28 SS

B81 AISI 310 Stainless Steel F12 Tungsten Carbide (TC) N1 AISI 302 Stainless Steel

C1 AISI 420 St Steel hardened F2 PIREXreg P6 ABS

C4 AISI 317 Stainless Steel F3 Rubin P7 FASIT OIL

C6 SAF 2205 Stainless Steel F4 Zapphire P8 EPDM ShA Rubber

D1 Polyvinylchloride (PVC) F5 Ceramic P9 STIROLUXreg 637

D2 Polypropylene (PP) F6 Silicon Carbide (SC) T1 Brass

D3 Polyamide (PA) G1 Cast Iron T3 Copper

D5 Powder Charged PP H1 Titanium T5 Bronze

D6 Fiberglass Charged PP L1 MONEL 400 T8 Nickel Plated Brass

D7 High Density Polyethylene L2 INCOLOYreg 825 V1 Aluminium

D8 Polyvinylidenefluoride (PVDF) L21 INCONELreg 600 V7 Aluminium ENP

STANDARD ORGANIZATION COUNTRY STANDARD CODE

AFNOR Association Franccedilaise de Normalisation France NF

AISI American Iron and Steel Institute USA AISI

ANSI American National Standards Institute USA ANSI

ASTM American Society for Testing and Materials USA ASTM

BSI British Standards Institution UK BS

DIN Deutsches Institut fuumlr Normung Germany DIN

DSIT Dansk StandardsInformation Technology Denmark DS

ISO International Organization for Standardization International ISO

JIS Japanese Institute for Standard Japan JIS

UNI Ente Nazionale di Unificazione Italy UNI

NOTEThe complete list of the Materials Codes may be requested to our Technical Service mentioning release code TGCE CODMAT

NOZZLE MATERIALS PNR material codes

35wwwpnr-nozzlescomCTG SH 07 EU

NOZ

ZLE

MAT

ERIA

LS

B1 AISI 303 STAINLESS STEEL

Chemical composition CR 1750 NI 850 S 025 Coding correspondence

Type Stainless Steel Austenitic AISI 303

Hardening Not possible BS 303 S 21

Annealing 1050 1100deg C in water DIN Wnr 14305

Welding Possible with precautions Euro X10CrNiS1809

Corrosion properties

Good resistance Atmospheric exposure food substances organic chemicalsLow resistance Chlorides reducing acids and over 800deg C

JIS SUS 303

NF Z6CN 18-09

SIS 2346

UNI XWCrNiS 1809

B3 AISI 316 STAINLESS STEEL

Chemical composition C 005 CR 170 NI 120 MO 225 Coding correspondence

Type Stainless Steel Austenitic AISI 316

Hardening Not possible BS 316 S 21

Annealing 1050 1100deg C in water DIN Wnr 14401

Welding Easy using same steel electrodes Euro X6CrNiMo17122

Corrosion properties

Good resistance Atmosphere great number of salts organic acids foodsLow resistance Solutions of reducing acids temperatures over 500deg C

JIS SUS 316

NF Z6CND 17-11

SIS 2347

UNI X5CrNiMo1712

B31 AISI 316L STAINLESS STEEL

Chemical composition C 003 CR 170 NI 130 MO 225 Coding correspondence

Type Stainless Steel Austenitic AISI 316 L

Hardening Not possible BS 316S12

Annealing 1050 1100deg C in water DIN Wnr 14404

Welding Easy using same steel electrodes Euro X3CrNiMo1810

Corrosion properties

Good resistance Atmosphere great number of salts organic acids foods salt waterLow resistance Solutions of reducing acids temperatures over 500deg C

JIS SUS 316L

NF Z2CND17-12

SIS 2348

UNI X2CrNiMo 1712

NOZZLE MATERIALS Properties of materials

36 wwwpnr-nozzlescom CTG SH 07 EU

C1 AISI 420 STAINLESS STEEL

Chemical composition C 020 CR 1300 Coding correspondence

Type Stainless Steel Martensitic AISI 420

Hardening 980deg - 1030deg C in oil BS 420 S 29

Annealing 750deg - 800deg C in air DIN Wnr 14021

Welding Possible with precautions Euro X20Cr13

Corrosion properties Good resistance Drinkable water steamgasoline oil alcohol ammonia

JIS SUS 420 J1

NF Z20C13

SIS 2303

UNI X20Cr13

C2 AISI 416 STAINLESS STEEL

Chemical composition C 012 CR 1250 S 022 Coding correspondence

Type Stainless Steel Martensitic AISI 416

Hardening 950deg - 1100deg C in oil BS 416 S 21

Annealing 750deg - 800deg C DIN Wnr ---

Welding Not possible Euro X120CrS13

Corrosion properties Good resistance Drinkable water steamgasoline oil alcohol ammonia

JIS SUS 416

NF Z12CF13

SIS ---

UNI X12CrS13

D8 POLYVINYLIDENE FLUORIDE (PVDF)

Description HIGH-MOLECULAR WEIGHT THE TOUGHEST OF THE FLUOROCARBON RESINS

Trade names amp SuppliersKYNAR (Atochem North America Inc formerly Penwalt Corporation)

SOLEF (Solvay Polymer Corporation)

Physical andMechanical Properties

Excellent resistance to abrasion and stress fatigue

Extremely pure opaque white resin

Thermal Properties UsefuI in temperatures ranging from -73 149degC (-100 300degF)Heat deflection temperature is (8090deg C at 182 Bars (176 194deg F at 264 psi)

Chemical Compatibility

Excellent chemical resistanceCan be used with wet or dry halogens most strong acids and bases aliphatics aromaticsalcohols and strong oxidizing agentsNot recommended for contact with ketones esters amines and some organic acids(fuming sulfuric acid)

NOZZLE MATERIALS Properties of materialsN

OZZL

E M

ATER

IALS

37wwwpnr-nozzlescomCTG SH 07 EU

E1 POLYTETRAFLUOROETHYLENE (PTFE)

Description FLUOROPLASTIC THAT HAVE SOME OR ALL OF THEIR HYDROGEN MOLECULESREPLACED BY FLUORINE

Trade names amp Suppliers

TEFLON TFE FEP and PFA (Dupont Polymer Products)

NEOFLON (Daikin)

FLUON (ICI Americas Inc)

SST-2SST-3 (Shamrock Technologies Inc)

Physical andMechanical Properties

Low coefficient

Low adhesiveness

Buona resistenza agli agenti atmosferici

Good weatherabilityLow resistance to creep and wear unless reinforced with glass figravebers which results in superior resistance

Thermal Properties High and low temperature stabilityHeat deflection temperatures range from 4855deg C at 182 bar (118-132deg F at 264 psi)

Chemical CompatibilityChemically inert

Totally insoluble

E3 ACETAL (ACETAL HOMOPOLYMERS AND COPOLYMERS)

Description HIGHLY CRYSTALLINE RESINS BASED ON FORMALDEHYDE POLYMERIZATION TECHNOLOGY

Trade names amp Suppliers

DELRIN (Dupont Polymer Products Corporation)

CELCON (Hoechst Celanese Corporation)

ULTRAFORM (BASF Corporation)

RTP 800 (RTP Corporation)

LUPITAL amp TENAL (Franklin Polymers Inc)

FULTRON 404 (ICI Americas Inc)

Physical andMechanical Properties

High tensile strength rigidity and esilience

High fatigue endurance

Excellent dimensional stability

Low coefficient of friction

Outstanding abrasion and wear resistance

Excellent creep resistance

Thermal Properties Heat deflection temperatures range from 110 -136deg C at 182 bars(230 - 270deg F at 264 psi) higher if glass figravelled

Chemical Compatibility

Remains stable in long-term high temperature water immersionExcellent resistance to chemicals and solvents but prolonged exposure to strong acids not recommendedNote Suitable for close-tolerance high-performance partsAvailable for machined parts or may be injection molded

NOZZLE MATERIALS Properties of materials

NOZ

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MAT

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38 wwwpnr-nozzlescom CTG SH 07 EU

L6 HASTELLOY C4

PHYSICAL AND MECHANICAL PROPERTIES CHEMICAL COMPOSITION CORROSION RESISTANCE

R = 650800 Mpa C = 0015 max

Very good against pitting and tensile-corrosion specially in oxydizing atmosphereResistance in welded joints definitely better than C 276 lower than C22

Rp02 = 250470 Mpa Ni = 65

HRB = 90 Cr = 160

Mo = 155

W = --

Fe = 3 max

Ti = 05

Co = 2 max

APPLICATIONSRecommended for applications with strongly oxidizing atmosphere

L61 HASTELLOY C 22

PHYSICAL AND MECHANICAL PROPERTIES CHEMICAL COMPOSITION CORROSION RESISTANCE

R = 700800 Mpa C = 001 max

Excellent performances with oxydizing atmospheres as well as for pitting and tensile-corrosion conditionsVery good resistance in reducing atmospheres and for welded joints

Rp02 = 360420 Mpa Ni = 56

HRB = 93 Cr = 22

Mo = 13

W = 3

Fe = 3

Ti = --

Co = 25 max

APPLICATIONSChemical industry (gas ducts gas washing and treatment systems phosphoric acid production) Heat exchangers pumps chlorination reactors

L8 HASTELLOY C 276

PHYSICAL AND MECHANICAL PROPERTIES CHEMICAL COMPOSITION CORROSION RESISTANCE

R = 600800 Mpa C = 0015 max

Very good in reducing and oxydizing atmospheresVery good against pitting and tensile-corrosionAcceptable resistance in welded jointsIn cast parts excessive segregation not eliminated by thermal treatment of annealing makes it convenient to use C22 or C4 qualitieswhich assure better corrosion resistance and mechanical properties

Rp02 = 300370 Mpa Ni = 57

HRB = 90 Cr = 145165

Mo = 1517

W = frac345

Fe =

V = 035 max

Co = 25 max

APPLICATIONSChemical industry (air ducts scrubbers fans) Paper industry Thermoelectric plants Steel thermal treatments

NOZ

ZLE

MAT

ERIA

LSNOZZLE MATERIALS Properties of materials

39wwwpnr-nozzlescomCTG SH 07 EU

MATERIALTENSILE STRENGHT

CORROSION RESISTANCERp 02 R

20degC 800degC 20degC 800degC

(68degF) (1408degF) (68degC) (1408degC)

AISI 302 280 100 680 200

Good sensitive to corrosionbetween grains for slow heatingand cooling in the 450-900deg Crange temperature

AISI 303 280 100 680 200 Discrete

AISI 304304L 270 90 600 100Good especially for 304L304 sensitive to corrosionbetween grains like AISI 302

AISI 309 250 100 640 220 Good Sensitive to corrosion between grains like AISI 302

AISI 310 310 170 650 270Good (gt 304 - 304L)Sensitive to corrosionbetween grains like AISI 302

AISI 316316L 270 110 560 220 Very high especially for 316L

AISI 321 210 100 540 140 Good

AISI 347 280 120 620 200 Good

AISI 416 620 70 750 90

Good in medium corrosive ambient (atmosphere water gasoline alcohol N1-13 foods)Not in high corrosive

BRASS 110-150 --- 360-410 --- Good especially when nickel plated

BRONZE 100-300 --- 200-600 --- Discrete especially with sea water

CAST IRON le 500 V 100-800 V

NICKEL ALLOYS 100-1000 V 300-1300 VVery high also for high temperature To use in the temperaturerange 800-1200deg C

PLASTICS --- --- 20-200 ---

Good also for erosionGenerally they are attackedwith oxidizers like nitric acidhalogens ect

PTFE --- --- 30-40 ---

Very high except for elementarystate of alkaline metalsand to compounds containingfluorine at high temp

DUPLEX STEEL gtAISI 3 gtAISI 3 gtAISI 3 gtAISI 3 Very high also with high temperatureand also for pitting

TITANIUM alloy 195-850 V 300-900 VVery high in oxidizing ambientVery low in reducing ambient and with compounds containing fluorine

Legend Rp 02 = 02 YIELD STRENGHT [MPa]R = ULTIMATE TENSILE STRENGHT [MPa]V = To verify time by time

NOZZLE MATERIALS Mechanical properties of materials

NOZ

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MAT

ERIA

LS

73wwwpnr-nozzlescomCTG SH 07 EU

PIPI

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PIPINGPipes data 74Economic pipe sizes 75Pressure drop in clean steel pipes 76Flange dimensions 78Sieve size conversion chart 80

PIPING

74 wwwpnr-nozzlescom CTG SH 07 EU

The following table report the data of pipes according to ANSI B3619 that is one of the most used standards that regulate welded stainless steel pipes

DN NPS OD[mm]

SCHEDULE

5S 10S 40SSTD 80SXS

t m t m t m t m

[mm] [kgm] [mm] [kgm] [mm] [kgm] [mm] [kgm]

6 18 103 NA NA 124 028 173 037 241 048

8 14 137 NA NA 165 050 224 064 302 081

10 38 172 NA NA 165 064 231 086 320 112

15 12 213 165 081 211 101 277 128 373 164

20 34 267 165 103 211 130 287 171 391 223

25 1 334 165 131 277 212 338 254 455 328

32 1frac14 422 165 167 277 273 356 344 485 453

40 1frac12 483 165 192 277 315 368 411 508 549

50 2 603 165 242 277 399 391 551 554 759

65 2frac12 730 211 374 305 534 516 875 701 116

80 3 889 211 458 305 655 549 115 762 155

90 3frac12 1016 211 525 305 752 574 138 808 189

100 4 1143 211 592 305 849 602 163 856 226

125 5 1413 277 960 340 117 655 221 953 314

150 6 1683 277 115 340 140 711 287 1097 432

200 8 2191 277 150 376 202 818 431 1270 656

250 10 2730 340 229 419 282 927 611 1270 827

300 12 3239 396 317 457 365 953 749 1270 988

350 14 3556 396 348 478 419 NA NA NA NA

400 16 4064 419 421 478 480 NA NA NA NA

450 18 457 419 474 478 541 NA NA NA NA

500 20 508 478 602 554 696 NA NA NA NA

550 22 559 478 662 554 767 NA NA NA NA

600 24 610 554 837 635 959 NA NA NA NA

Where

DN = Nominal diameter NPD = Nominal Pipe Size OD = Outside Diameter t = Wall Thickness m = Specific WeightPIPI

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PIPING Pipes data

75wwwpnr-nozzlescomCTG SH 07 EU

The following Specific Pressure Drops (Y) are normally used in the good engineering practice(where Y=ΔPL ΔP Pressur Drop and L Pipe Lenght)

For pipe sizing the Velocity (V) is also usedIn the following table are shown the typical liquid velocities in steel pipes

Some fixed pressure drop values indicationsfor gate valves (fully open) consider a pressure drop of 5 metersbullfor normal bends consider a pressure drop of 5 metersbullfor a check valve consider a pressure drop of 15 metersbull

In the succeeding tables we show the velocity and specific pressure drop for several flow rates and pipe diameters

Not boiling waterY = 02divide05 bar100 m for pump discharge (07 bar100 m max if P gt 50 bar)

Y lt 0110 bar100 m for pump suction

Boiling water Y = 004divide005 bar100 m for pump suction (velocity = 03divide09 ms)

LIQUID LINE TYPE

Specific Pressure Dropsvs Velocity [ms]

0 lt V lt 2 3 lt V lt 10 10 lt V lt 20

NOT BOILING WATER

Pump suctionPump discharge (long)Discharge leads (short)Boiler feedDrainsSloped sewer

03 divide 0606 divide 0912 divide 2712 divide 2709 divide 12

-

06 divide 1209 divide 1515 divide 3715 divide 3709 divide 1509 divide 15

09 divide 1812 divide 2124 divide 4224 divide 42

-12 divide 21

HYDROCARBON LIQUIDS(normal viscosity)

Pump suctionDischarge heather (long)Discharge leads (short)Drains

05 divide 0808 divide 1112 divide 2709 divide 12

06 divide 1209 divide 1515 divide 3709 divide 15

09 divide 1812 divide 2124 divide 46

-

MEDIUM VISCOSITY OILPump suctionDischarge (short)Drains

--

03

05 divide 0901 divide 0209 divide 15

08 divide 1501 divide 0312 divide 18

OTHER WATERCooling tower Chilled waterSea water and generally foulingwater (long pipes) ()

06 divide 09 09 divide 15 12 divide 21

Note () In this case Cameron method has to be used with C=1 Y = 005 divide 012 bar100 m for principal manifold Y = 012 divide 023 bar100 m for secondary manifold

PIPI

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PIPING Economic pipe sizes

76 wwwpnr-nozzlescom CTG SH 07 EU

18rdquo 14rdquo

1 0350 0370 0200 0090 38rdquo 12rdquo

2 0705 1340 0395 0331 0223 0082 0145 0029 34rdquo

3 1060 2890 0593 0673 0333 0176 0217 0061 0125 0016 1rdquo

4 1410 4940 0788 1150 0444 0291 0290 0101 0167 0027 0110 0010

5 1760 7460 0985 1750 0556 0424 0362 0149 0209 0040 0137 0014

6 1180 2460 0667 0594 0434 0207 0251 0054 0165 0019 114rdquo

8 1580 4060 0892 1020 0579 0351 0335 0091 0219 0033 0126 0009 112rdquo

10 1110 1530 0724 0534 0418 0136 0274 0049 0158 0012 0116 0006

15 1670 3250 1090 1130 0627 0284 0411 0099 0236 0026 0174 0012

20 2rdquo 2230 5600 1450 1900 0836 0481 0549 0168 0315 0043 0233 0021

30 0212 0013 212rdquo 2170 4130 1250 1020 0823 0353 0473 0092 0348 0043

40 0283 0022 0190 0007 2900 7180 1670 1760 1100 0606 0631 0155 0465 0073

50 0354 0032 0237 0012 2090 2700 1370 0911 0789 0233 0581 0108

60 0424 0044 0284 0017 2510 3810 1650 1290 0943 0321 0697 0150

70 0495 0079 0332 0022 3rdquo 2930 5120 1920 1720 111 0434 0814 0199

80 0566 0074 0379 0028 0248 0010 312rdquo 2190 2210 126 0554 0925 0253

90 0636 0093 0427 0035 0279 0013 0209 0006 2470 2770 142 0692 1040 0319

100 0707 0114 0474 0043 0310 0015 0232 0007 4rdquo 2740 3400 158 0843 1160 0392

150 1060 0238 0711 0090 0464 0031 0349 0016 0272 0008 4110 7440 236 181 1740 0828

200 1410 0414 0948 0153 0619 0053 0466 0027 0362 0014 315 314 2330 1450

250 1760 0625 1190 0233 0774 0080 0581 0040 0453 0021 5rdquo 2900 2200

300 2120 0889 1420 0324 0930 0112 0698 0055 0543 0030 0352 0011 3480 3070

350 2470 1190 1660 0438 1080 0150 0815 0074 0634 0040 0411 0014 6rdquo 4070 4160

400 2830 1550 1900 0563 1240 0195 0935 0096 0724 0051 0469 0018 0341 0007 4650 5380

450 3180 1930 2130 0707 1390 0242 1050 0120 0815 0063 0528 0022 0366 0009 5230 6790

500 3540 2380 2370 0867 1550 0298 1170 0147 0902 0076 0587 0027 0407 0011

550 3880 2870 2610 1040 1700 0354 1280 0174 0991 0092 0645 0032 0447 0013

600 4240 3390 2840 1220 1860 0418 1400 0204 1090 0110 0704 0037 0488 0015

650 4590 5560 3080 1420 2010 0486 1510 0239 1180 0127 0762 0043 0529 0017

700 4950 4550 3320 1650 2170 0560 1630 0275 1270 0146 0821 0050 0569 0020

750 5300 5200 3560 1880 2320 0637 1750 0314 1360 0164 0879 0057 0610 0023

800 3790 2130 2480 0721 1860 0354 1450 0185 0936 0064 0651 0025 8rdquo

850 4030 2390 2630 0805 1980 0395 1540 0209 1000 0072 0692 0028 0403 0007

900 2790 0901 2090 0438 1630 0232 1050 0008 0732 0032 0427 0008

950 2940 1000 2210 0486 1720 0258 1120 0087 0773 0036 0451 0010

1000 3100 1110 2320 0534 1810 0284 1170 0096 0814 0039 0474 0011

1100 3410 1290 2560 0643 1990 0341 1290 0116 0895 0047 0522 0012

1200 3720 1 580 2800 0763 2170 0403 1410 0135 0974 0055 0569 0015

1300 3030 0890 2360 0473 1530 0157 1060 0063 0616 0017

1400 3260 1020 2540 0544 1640 0183 1140 0072 0664 0019

1500 3490 1170 2720 0617 176 0208 1220 0083 0712 0022

1600 3720 1330 2890 0697 1880 0234 1300 0093 0758 0025

1700 10rdquo 3950 1490 3080 0784 1990 0260 1380 0104 0806 0028

1800 0546 0010 3260 0875 2110 0290 1470 0116 0854 0032

1900 0575 0012 3440 0965 2230 0323 1550 0129 0901 0034

2000 0606 0012 3617 1060 2340 0356 1630 0143 0946 0037

2200 0667 0015 3980 1280 2580 0429 1790 0172 1050 0045

2400 0727 0017 12rdquo 2820 0507 1950 0200 1140 0053

2600 0788 0021 0563 0009 3050 0589 2110 0234 1230 0061

2800 0848 0023 0606 0010 14rdquo 3280 0676 2280 0268 1330 0070

3000 0909 0026 0649 0011 0532 0007 3520 0773 2440 0306 1420 0080

3500 1060 0035 0760 0015 0620 0009 4110 105 2850 0416 1660 0108

4000 1210 0045 0866 0020 0709 0012 16rdquo 4690 135 3250 0532 1900 0139

4500 1360 0056 0976 0025 0798 0015 0606 0007 3660 0674 2130 0173

5000 1520 0069 1080 0029 0886 0018 0674 0009 4070 0822 2370 0212

6000 1810 0097 1290 0042 1070 0026 0808 0013 18rdquo 4880 1160 2850 0301

7000 2120 0130 1510 0055 1240 0035 0940 0017 0741 0010 5690 1580 3310 0403

8000 2420 0168 1730 0072 1420 0045 1080 0022 0847 0012 6510 2050 3790 0525

9000 2730 0210 1950 0091 1600 0056 1210 0027 0954 0015 4270 0659

10000 3030 0257 2170 0111 1770 0067 1350 0033 1050 0019 4740 0801

Legend Q Water Flow Rate (Lpm) V Velocity (ms) Y Specific Pressure Drops (bar100m)Water at ambient temperature in straight pipe

SPECIfIC PRESSURE DROPS fOR WATER fLOW IN CLEAN STEEL PIPE SCH 10S

Q V Y V Y V Y V Y V Y V Y V Y V Y [lm] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m]

PIPI

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77wwwpnr-nozzlescomCTG SH 07 EU

SPECIfIC PRESSURE DROPS fOR WATER fLOW IN CLEAN STEEL PIPE SCH 40S

Legend Q Water Flow Rate (Lpm) V Velocity (ms) Y Specific Pressure Drops (bar100m)Water at ambient temperature in straight pipe

18rdquo 14rdquo

1 0458 0726 0251 0170 38rdquo 12rdquo

2 0918 2590 0501 0600 0272 0136 0170 0044 34rdquo

3 1380 5590 0752 1220 0407 029 0255 0091 0144 0023 1rdquo

4 1840 9570 1000 2090 0543 048 0340 0151 0192 0038 0120 0012

5 2290 14450 1250 3180 0679 070 0425 0223 0241 0057 0150 0017

6 1500 4460 0815 0980 0510 0309 0289 0077 0180 0024 114rdquo

8 2010 7360 1090 1690 0680 0524 0385 0129 0240 0041 0138 0011 112rdquo

10 1360 2520 0850 0798 0481 0193 0300 0061 0172 0015 0127 0008

15 2040 5370 1280 1690 0722 0403 0450 0124 0258 0032 019 0015

20 2rdquo 2720 9240 1700 2840 0962 0683 0600 0210 0344 0054 0254 0026

30 0231 0016 212rdquo 2550 6170 1440 1450 0900 0442 0517 0114 038 0053

40 0308 0027 0216 0010 3400 10720 1920 2500 1200 0758 0689 0193 0507 0091

50 0385 0039 0270 0017 2410 3830 1500 1140 0861 029 0634 0135

60 0462 0055 0324 0023 2890 5410 1800 1610 103 0400 0761 0187

70 0539 0098 0378 0031 3rdquo 3370 7270 2100 2150 1210 0541 0888 0248

80 0616 0092 0432 0039 028 0014 312rdquo 2400 2760 1380 0690 1010 0315

90 0693 0115 0486 0048 0315 0017 0235 0008 2700 3470 1550 0862 1140 0397

100 0770 0141 0540 0059 035 002 0261 0010 4rdquo 3000 4250 1720 1050 1270 0488

150 1150 0295 0810 0125 0524 0042 0392 0021 0304 0011 4500 9300 2580 2260 1900 1030

200 1540 0512 1080 0212 0699 0072 0523 0036 0405 0019 3440 3910 2540 1810

250 1920 0773 1350 0322 0874 0108 0653 0053 0507 0028 5rdquo 3170 2740

300 2310 1100 1620 0449 105 0152 0784 0074 0608 004 0387 0014 3800 3820

350 2690 1470 1890 0606 122 0203 0915 0099 0710 0053 0452 0018 6rdquo 4440 5180

400 3080 1920 2160 0780 14 0264 1050 0128 0811 0068 0516 0023 0375 0009 5070 6690

450 3460 2390 2430 0979 157 0328 1180 0161 0912 0084 0581 0028 0402 0012 5710 8450

500 3850 2950 2700 1200 175 0403 1310 0196 1010 0101 0646 0034 0447 0014

550 4230 3550 2970 1440 192 0479 1440 0232 1110 0122 0710 0041 0491 0016

600 4620 4200 3240 1690 2100 0566 1570 0273 1220 0146 0775 0047 0536 0019

650 5000 6880 3510 1970 2270 0658 1700 0319 1320 0169 0839 0055 0581 0022

700 5390 5630 3780 2280 2450 0759 1830 0368 1420 0194 0904 0063 0625 0025

750 577 6440 4050 2600 2620 0863 1960 042 1520 0218 0968 0072 067 0029

800 4320 2950 2800 0977 2090 0473 1620 0246 1030 0081 0715 0032 8rdquo

850 4590 3310 2970 1090 2220 0528 1720 0277 1100 0091 076 0036 0439 0009

900 3150 1220 2350 0585 1820 0308 1160 0100 0804 0041 0465 001

950 3320 1350 248 0649 1930 0342 1230 0111 0849 0045 0491 0012

1000 3500 1500 261 0714 2030 0377 1290 0122 0894 0049 0516 0013

1100 3850 1750 2870 0860 2230 0452 1420 0147 0983 0059 0568 0015

1200 4200 2140 3140 1020 2430 0534 1550 0172 1070 0069 0620 0018

1300 3400 1190 2640 0627 1680 0200 1160 008 0671 0021

1400 3660 1370 2840 0722 1810 0232 1250 0091 0723 0024

1500 3920 1560 3040 0818 1940 0264 1340 0105 0775 0027

1600 4180 1780 3240 0924 2070 0297 1430 0118 0826 0031

1700 10rdquo 4440 1990 3450 1040 2190 0331 1520 0132 0878 0035

1800 0590 0012 3650 1160 2320 0369 1610 0147 0930 0039

1900 0622 0014 3850 1280 2450 041 1700 0163 0981 0042

2000 0655 0015 40500 1410 2580 0452 1790 0181 1030 0046

2200 0721 0018 4460 1700 2840 0545 1970 0217 1140 0056

2400 0786 0021 12rdquo 3100 0645 2140 0253 1240 0065

2600 0852 0025 0600 001 3360 0749 2320 0296 1340 0076

2800 0917 0028 0646 0012 14rdquo 3610 0859 2500 0339 1450 0087

3000 0983 0032 0692 0013 0573 0008 3870 0982 268 0387 1550 0099

3500 1150 0043 0810 0018 0668 0011 4520 1330 3130 0526 1810 0134

4000 1310 0055 0923 0023 0764 0014 16rdquo 5160 1720 3570 0673 2070 0172

4500 1470 0068 1040 0029 0860 0018 0658 0009 4020 0853 2320 0214

5000 1640 0084 1150 0034 0955 0022 0731 0011 4470 1040 2580 0262

6000 1960 0118 1380 0049 1150 0031 0877 0016 18rdquo 5360 1470 3100 0373

7000 2290 0158 1610 0065 1340 0042 1020 0021 0808 0012 6250 2000 3610 0499

8000 2620 0204 1840 0085 1530 0054 1170 0027 0924 0015 7150 2590 4130 065

9000 2950 0256 2080 0107 1720 0067 1310 0033 1040 0019 4650 0816

10000 3280 0313 2310 0130 1910 0081 1460 0041 1150 0023 5160 0992

Q V Y V P V Y V Y V Y V Y V Y V Y [lm] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m]

PIPI

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78 wwwpnr-nozzlescom CTG SH 07 EU

10 75 12 038 4 11 50

15 80 12 044 4 11 55

20 90 14 065 4 11 65

25 100 14 082 4 11 75

32 120 14 117 4 14 90

40 130 14 139 4 14 100

50 140 14 162 4 14 110

65 160 14 214 4 14 130

80 190 16 343 4 18 150

100 210 16 422 4 18 170

125 240 18 611 8 18 200

150 265 18 751 8 18 225

175 295 20 1020 8 18 255

200 320 20 1230 8 18 280

250 375 22 1850 12 18 335

300 440 22 2550 12 22 395

350 490 22 3180 12 22 445

400 540 22 3850 16 22 495

450 595 22 4700 16 22 550

500 645 24 6040 20 22 600

PN 6 (UNI 6091)

ND 6 (DIN 2527) DN Flange Holes

D t W N Oslash a

90 14 063 4 14 60

95 14 071 4 14 65

105 16 101 4 14 75

115 16 122 4 14 85

140 16 180 4 18 100

150 16 209 4 18 110

165 18 287 4 18 125

185 18 365 4 18 145

200 20 461 8 18 160

220 20 565 8 18 180

250 22 812 8 18 210

285 22 1050 8 22 240

315 24 1410 8 22 270

340 24 1620 12 22 295

405 28 2510 12 25 355

460 28 3520 12 25 410

520 30 4820 16 25 470

580 32 6350 16 30 525

640 32 7720 20 30 585

715 34 1020 20 33 650

PN 16 (UNI 6093)

ND 16 (DIN 2527) Dimensions Holes

D t W N Oslash a

ND 10 (DIN 2527) Dimensions Holes

D t W N Oslash a

90 14 063 4 14 60

95 14 071 4 14 65

105 16 101 4 14 75

115 16 122 4 14 85

140 16 180 4 18 100

150 16 209 4 18 110

165 18 287 4 18 125

185 18 365 4 18 145

200 20 461 4 18 160

220 20 565 8 18 180

250 22 812 8 18 210

285 22 1050 8 22 240

315 24 1410 8 22 270

340 24 1650 8 22 295

395 26 2410 12 22 350

445 26 3080 12 22 400

505 26 3960 16 22 460

565 26 4960 16 25 515

615 26 5860 20 25 565

670 28 7530 20 25 620

PN 10 (UNI 6092)

LegendaDN Nominal DiameterD Flange External Diametert Flange ThicknessW Flange WeightN Hole NumberOslash Hole Diametera Hole axis

PIPING Flange dimensionsPI

PIN

G

Blind flanges to DIN 2527

79wwwpnr-nozzlescomCTG SH 07 EU

LegendDN Nominal DiameterD Flange External Diametert Flange ThicknessW Flange WeightN Hole NumberOslash Hole Diametera Hole axis

12rsquorsquo 889 111 08 4 159 603

34rsquorsquo 984 127 09 6 159 698

1rsquorsquo 1079 143 10 4 159 794

114rsquorsquo 1175 159 13 4 159 889

112rsquorsquo 1270 175 14 4 159 984

2rsquorsquo 1524 190 18 4 190 1206

212rsquorsquo 1778 222 32 4 190 1397

3rsquorsquo 1905 238 41 4 190 1524

312rsquorsquo 2159 238 59 8 190 1778

4rsquorsquo 2286 238 77 8 190 1905

5rsquorsquo 2540 238 91 8 222 2159

6rsquorsquo 2794 254 118 8 222 2413

8rsquorsquo 3429 286 204 8 222 2984

10rsquorsquo 4064 302 318 12 254 3619

12rsquorsquo 4826 317 500 12 254 4318

14rsquorsquo 5334 349 600 12 286 4762

16rsquorsquo 5969 365 770 16 286 5397

18rsquorsquo 6350 397 950 16 317 5778

20rsquorsquo 6985 429 1230 20 317 6350

22rsquorsquo 7493 460 1510 20 349 6921

ANSI 150 lb DN Flange Holes

D t W N Oslash a

952 143 10 4 159 667

1175 159 14 4 190 825

1238 175 18 4 190 889

1333 206 27 4 190 984

1556 222 36 4 222 1143

1651 254 45 8 190 1270

190S 286 68 8 222 1492

209S 317 91 8 222 1683

2286 349 132 8 254 1841

2540 349 150 8 254 2000

2794 381 200 8 254 2349

3175 413 277 12 254 2699

3810 476 450 12 286 3302

4445 540 700 16 317 3873

5207 571 103 16 349 4508

5842 603 141 20 349 5143

6477 635 181 20 381 5715

7112 667 228 24 381 6286

7747 698 282 24 413 6858

8382 730 311 24 444 7429

ANSI 400 lb Dimensions Holes

D t W N Oslash a

ANSI 300 lb Dimensions Holes

D t W N Oslash a

952 143 10 4 159 667

1175 159 14 4 190 825

1238 175 18 4 190 889

1333 190 27 4 190 984

1556 206 32 4 220 1143

1651 222 36 8 190 1270

1905 254 54 8 222 1492

2095 286 73 8 222 1683

2286 302 95 8 222 1841

2540 317 122 8 222 2000

2794 349 159 8 222 2349

3175 365 227 12 222 2699

3810 413 370 12 254 3302

4445 476 580 16 286 3873

5207 508 840 16 317 4508

5842 540 1070 20 317 5143

6477 571 1390 20 349 5715

7112 603 3900 24 349 6286

7747 635 2230 24 349 6858

8382 667 2700 24 413 7429

PIPING Flange dimensions

PIPI

NG

flanges to ANSI norms

80 wwwpnr-nozzlescom CTG SH 07 EU

PIPI

NG

Sieves are used both for determining the particle size distribution of a granular material and to filter solid particles in a liquid Normally the sieve is made with a fabric whose characteristic dimensions areL is the Opening Width (free passage)D is the Diameter of the wireP is the Pitch of the wireS is the Thickness of the fabricTo classify particle sizes there is some Sieve Series according to specific standardsthe most known are Tyler Sieve Series US Sieve Series UK Sieve SerieshellipThe Tyler mesh size indicates exactly the number of openings per linear inch of mesh

L[microm]

TYLER Sieve[Mesh No]

ASTM E11 Sieve[Mesh No]

BS 410 Sieve[Mesh No]

DIN 4188 Sieve[mm]

5 2500 2500 0005

10 1250 1250 0010

15 800 800 0015

20 625 635 625 0020

22 0022

25 500 500 500 0025

28 0028

32 na 450 440 0032

36 0036

38 400 400 400

40 0040

45 325 325 350 0045

50 0050

53 270 270 300

56 0056

63 250 230 240 0063

71 0071

75 200 200 200

80 0080

90 170 170 170 0090

100 0100

106 150 140 150

112 0112

125 115 120 120 0125

140 0140

150 100 100 100

160 0160

180 80 80 85 0180

200 0200

In the german standard (DIN norm 4188) the Opening Width (L) is given in millimeters

PIPING Sieve size conversion chartPI

PIN

G

81wwwpnr-nozzlescomCTG SH 07 EU

L[microm]

TYLER Sieve[Mesh No]

ASTM E11 Sieve[Mesh No]

BS 410 Sieve[Mesh No]

DIN 4188 Sieve[mm]

212 65 70 72

250 60 60 60 0250

280 0280

300 48 50 52

315 0315

355 42 45 44 0355

400 0400

425 35 40 36

450 0450

500 32 35 30 0500

560 0560

600 28 30 25

630 0630

710 24 25 22 0710

800 0800

850 20 20 18

900 0900

1000 16 18 16 1000

1120 1120

1180 14 16 14

1250 1250

1400 12 14 12 1400

1600 1600

1700 10 12 10

1800 1800

2000 9 10 8 2000

2240 2240

2360 8 8 7

2500 2500

2800 7 7 6 2800

3150 3150

3350 6 6 5

3550 3550

4000 5 5 4 4000

4500 4500

4750 4 4 35

5000 5000

5600 35 35 3

6700 3 0265 in 1

8000 25 516 in na

Applicable standards areISO 565 (1987) ISO 3310 (1999) ASTM E 11-70 (1995)DIN 4188 (1977) BS 410 (1986) AFNOR NFX11-501 (1987)

Legend Q Water Flow Rate V Velocity P Pressure drop Pressure drop in bar per 100 meters of straight pipe (water at ambient temperature)

PIPING Sieve size conversion chart

PIPI

NG

Besides its main range of nozzles for industrial applications PNR manufactures a wide range of complementary products and systems to optimize the use of spray jets and fluids control in most of the modern industrial processes

PNR PRODUCT RANGE

CTG AC

CTG LS

CTG UG

CTG AZ

Complementary Products andAssembly FittingsA complete line of nipples clamps swivel joints and everything that helps you to assemble align and service your spraying systems quickly and easilyAir blowers mixing eductors filters clean-ing guns and lances hose reels steam heaters pressure tanks quick couplings to help you build up a professional system upgraded to the latest standards

Tank washing systemsA complete range from simple fixed washing heads to the two-axis heads from mushroom nozzles to fluid driven reaction heads up to the motor driven washing heads equipped with a pneu-matic or electric motorAll for the inside cleaning of industrial tanks according to the latest technology accessories included

Spray nozzles for industrial applicationsOne of the world most complete lines of nozzles for numberless industrial appli-cations Nozzles with a wide openings range various types of vanes several spray patterns anti-clog design available in small and big dimensions and made in many food-grade materials like PFTE and Stainless Steel 316L with threaded and flanged connections

Air assisted atomizersUltrasonic classic and automatic atomiz-ers for the finest atomization in any insus-trial process High quality machining and strict quality control ensure your systems top professional resultsProgramming and control panels for an easy assembly of complete humidification systems

CTG SP

CTG PM

CTG SW

CTG LN

Spraydry nozzlesAir assisted or hydraulic high pressure ato-mizers made in high-quality metal alloys or tungsten carbideA complete line of nozzles for the moder-nization of existing facilities at competitive prices To ensure highly accurate results and a long service life these nozzles are manufactured with the finest materials and technologically advanced machines

Paper mill productsA line of products specifically designed for perfect results on paper mill machines including disc nozzles patented for self-cleaning filters flat jet nozzles with orifices in sapphire ruby and ceramic oscillating tubes equipped with a computer driven motor

Steelwork nozzlesA complete line of nozzles for steelwork applications including continuous casting air atomizers and conventional nozzles descaling nozzles for high pressure sys-tems dovetail tips for cylinders cooling and high capacity flanged nozzles for coke quenching

Gas cooling lancesSpillback or air assited lances for gas coo-ling in steelworks cement plants and other industrial applicationsWe can supply spare parts upgrade your plant and even supply a complete PLC driven system to enhance the towers per-formances to the highest efficiency level allowed by today technology

wwwpnr-nozzlescomCTG SH 07 EU

CTG SH 07 EUwwwpnr-nozzlescom

STAM

PATO

IN E

U 09

09

copy B

ellamp

Tany

Our products are distributed through

We are also represented in

PNR AmericaPNR Asia

PNR BalticPNR Benelux

PNR ChinaPNR Czech Republic

PNR DeutschlandPNR France

PNR ItaliaPNR Mexico

PNR UK

ArgentinaAustraliaAustriaBrazil

BulgariaCanada

ChileCroatia

DenmarkFinlandGreece

IndiaIndonesia

IranIrelandKorea

MalaysiaNorway

New ZealandPakistan

PhilippinesPoland

Portugal

RumeniaRussiaSerbia

SingaporeSlovenja

SpainSouth Africa

SwedenTaiwanTurkey

Venezuela

Page 5: SPRAY CTG SH 07 EU ENGINEERING HANDBOOK

5wwwpnr-nozzlescomCTG SH 07 EU

GENE

RAL

INFO

RMAT

ION

AMERICAN UNIT CONVERSION FACTOR SI UNITPound masscubic feet 16018 kilogramscubic meterGallons per minute 3785 liters per minute (lpm)US Gallon 3785 liter (I)Pound force 4448 Newton (N)BTU (British Thermal Unit) 1055 Joule (J)BTU per hour 02931 Watt (W)BTU per pounddeg F 4184 Joule (kg K)mil 254 Micrometer (micron)Inches 254 millimeters (mm)Foot 03048 meter (m)Horsepower 0746 kilowatt (kW)Pounds per square inch 00689 bar (1 bar = 100 kPa)BTU per pound 2326 Joule per kgLbs per gallon 01198 kg per liter (kgl)Square inch 64516 square centimeter (cm2)Square foot 00929 square meter (m2)Acre 04047 hectares (ha)Foot per second 03048 meters per second (msec)Foot per minute 03048 meters per minute (mmin)Miles per hours 1609 kilometers per hour (kmh)Knots 1852 kilometers per hour (kmh)Cubic foot 00283 cubic meter (m3)Cubic inch 16387 cubic centimeter (cm3)Pound 04536 kilogram (kg)Ton 090272 metric ton (t)

QUANTITYDENSITYFLOW RATEFLUID VOLUMEFORCEHEATHEAT TRANSFERSPECIFIC HEAT CAPACITYLENGTHLENGTHLENGTHPOWERPRESSURECALORIC VALUE ENTALPYSPECIFIC WEIGHTSURFACESURFACESURFACEVELOCITYVELOCITYVELOCITYVELOCITYVOLUMEVOLUMEWEIGHTWEIGHT

Multiply American Units on the left (by the conversion factor) to obtain SI Units on the right Divide SI Units on the right (by the conversion factor) to obtain American Units on the left

GENERAL INFORMATION Prefix tables for SI units

Prefixes

SI units can be indicated together with a prefix to easily indicate very large or very small numbersAs an example visible light has a wave length of approximately 00000005 m (meters) which can be more easily written as 500 nm (nanometers)Please note it is not allowed to use prefixes together you cannot write 10000 m = 1da-km

10n Prefix Symbol Denomination Decimal equivalent1024 yotta Y 1 000 000 000 000 000 000 000 0001021 zetta Z 1 000 000 000 000 000 000 0001018 exa E 1 000 000 000 000 000 0001015 peta P 1 000 000 000 000 0001012 tera T 1 000 000 000 000109 giga G 1 000 000 000106 mega M Million 1 000 000103 kilo k Thousand 1 000102 etto h Hundred 10010 deca da Ten 1010minus1 deci d Tenth 0110minus2 centi c Hundredth 00110minus3 milli m Thousandth 000110minus6 micro micro Millionth 0000 00110minus9 nano n 0000 000 00110minus12 pico p 0000 000 000 00110minus15 femto f 0000 000 000 000 00110minus18 atto a 0000 000 000 000 000 00110minus21 zepto z 0000 000 000 000 000 000 00110minus24 yocto y 0000 000 000 000 000 000 000 001

GENERAL INFORMATION Conversion table American units to Si units

NoteBecause of discrepancies between some denominations in English and American we only mention the commonly used deno-minations

6 wwwpnr-nozzlescom CTG SH 07 EU

There are 4 principal types of temperature scales used for indicate the temperature CENTIGRADE CELSIUS FAHRENHEIT KELVIN and RANKINE Kelvin and Celsius scales are used in Europe Rankine Fahrenheit are used in Anglo-Saxons countries

MP = water melting pointBP = water boiling point

GENE

RAL

INFO

RMAT

ION SYMBOL NAME MP BP NOTES

degC Centigrade 0 100 0 and 100 are arbitrarily placed at the freezing point andboiling point of water

degF Fahrenheit 32 212

0degF is the stabilized temperature when equal amounts ofice water and salt are mixed 96degF is the temperatureldquowhen the thermometer is held in the mouth or under thearmpit of a living man in good healthrdquo

degK Kelvin 27316 37316Based upon the definitions of the Centigrade scale and theexperimental evidence that absolute zero is ndash27316deg Cand that is an international standard temperature point

degR Rankine 49167 67167 Based upon the definitions of the Fahrenheit scale andthe experimental evidence that absolute zero is ndash27316deg C

degC degF43 1094

44 1112

45 113

46 1148

47 1166

48 1184

49 1202

50 122

51 1238

52 1256

53 1274

54 1292

55 131

56 1328

57 1346

58 1364

59 1382

60 140

61 1418

62 1436

63 1454

64 1472

65 149

66 1508

degC degF67 1526

68 1544

69 1562

70 158

71 1598

72 1616

73 1634

74 1652

75 167

76 1688

77 1706

78 1724

79 1742

80 176

81 1778

82 1796

83 1814

84 1832

85 185

86 1868

87 1886

88 1904

89 1922

90 194

degC degF91 1958

92 1976

93 1994

94 2012

95 203

96 2048

97 2066

98 2084

99 2102

100 212

105 221

110 230

115 239

120 248

125 257

130 266

135 275

140 284

145 293

150 302

160 320

170 338

180 356

190 374

degC degF19 662

20 68

21 698

22 716

23 734

24 752

25 77

26 788

27 806

28 824

29 842

30 86

31 878

32 896

33 914

34 932

35 95

36 968

37 986

38 1004

39 1022

40 104

41 1058

42 1076

degC degF-10 14

-8 176

-6 212

-4 248

-2 284

0 32

1 338

2 356

3 374

4 392

5 41

6 428

7 446

8 464

9 482

10 50

11 518

12 536

13 554

14 572

15 59

16 608

17 626

18 644

CONVERSION FORMULAE TABLE

CELSIUS FAHRENHEIT KELVIN RANKINE

degC= -

degF - 32 K - 27316

R - 27316

18 18

degF= 18 degC + 32 18K - 45969 R - 45969

K= degC + 27316

degF - 32 + 27316

- R

18 18

degR= 18 (degC + 27316) degF + 45967 18K -

GENERAL INFORMATION Conversion table temperature scales

7wwwpnr-nozzlescomCTG SH 07 EU

GENE

RAL

INFO

RMAT

ION

GENERAL INFORMATION Metric and decimal equivalents of fractions of an inch

5wwwpnr-nozzlescom

METRIC AND DECIMAL EQUIVALENTS OF FRACTIONS OF ONE INCH

mm FRACTIONS OF ONE INCH INCHES

03969 164 0015625079375 132 00312511906 364 00468715875 116 00625 19844 564 0078125238125 332 009375 27781 764 0109375 31750 18 012535719 964 014062396875 532 01562543656 1164 017187547625 316 1364 0187551594 0203125555625 732 02187559531 1564 023437563500 14 02567469 1764 0265625 714375 932 02812575406 1964 029687 79375 516 0312583344 2164 0328125873125 1132 03437591281 2364 035937595250 38 037599219 2564 0390625

1031875 1332 040625107156 2764 042187111125 716 04375115094 2964 04531251190625 1532 046875123031 3164 0484375127000 12 05130969 3364 05156251349375 1732 053125138906 3564 054687142875 916 05625146844 3764 05781251508125 1932 059375154781 3964 0609375 158750 58 0625 162719 4164 064062 1666875 2132 065625 170656 4364 0671875 174625 1116 06875 178594 4564 0703125 1825625 2332 071875 186531 4764 0734375 190500 34 075194469 4964 07656251984375 2532 078125202406 5164 0796875206375 1316 08125210344 5364 08281252143125 2732 084375218280 5564 085937222250 78 0875226219 5764 08906252301875 2932 090625 234156 5964 0921875238125 1516 09375242094 6164 09531252460625 3132 096875250031 6364 0984375254000 1 10

INT

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ION

5wwwpnr-nozzlescom

METRIC AND DECIMAL EQUIVALENTS OF FRACTIONS OF ONE INCH

mm FRACTIONS OF ONE INCH INCHES

03969 164 0015625079375 132 00312511906 364 00468715875 116 00625 19844 564 0078125238125 332 009375 27781 764 0109375 31750 18 012535719 964 014062396875 532 01562543656 1164 017187547625 316 1364 0187551594 0203125555625 732 02187559531 1564 023437563500 14 02567469 1764 0265625 714375 932 02812575406 1964 029687 79375 516 0312583344 2164 0328125873125 1132 03437591281 2364 035937595250 38 037599219 2564 0390625

1031875 1332 040625107156 2764 042187111125 716 04375115094 2964 04531251190625 1532 046875123031 3164 0484375127000 12 05130969 3364 05156251349375 1732 053125138906 3564 054687142875 916 05625146844 3764 05781251508125 1932 059375154781 3964 0609375 158750 58 0625 162719 4164 064062 1666875 2132 065625 170656 4364 0671875 174625 1116 06875 178594 4564 0703125 1825625 2332 071875 186531 4764 0734375 190500 34 075194469 4964 07656251984375 2532 078125202406 5164 0796875206375 1316 08125210344 5364 08281252143125 2732 084375218280 5564 085937222250 78 0875226219 5764 08906252301875 2932 090625 234156 5964 0921875238125 1516 09375242094 6164 09531252460625 3132 096875250031 6364 0984375254000 1 10

INT

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5wwwpnr-nozzlescom

METRIC AND DECIMAL EQUIVALENTS OF FRACTIONS OF ONE INCH

mm FRACTIONS OF ONE INCH INCHES

03969 164 0015625079375 132 00312511906 364 00468715875 116 00625 19844 564 0078125238125 332 009375 27781 764 0109375 31750 18 012535719 964 014062396875 532 01562543656 1164 017187547625 316 1364 0187551594 0203125555625 732 02187559531 1564 023437563500 14 02567469 1764 0265625 714375 932 02812575406 1964 029687 79375 516 0312583344 2164 0328125873125 1132 03437591281 2364 035937595250 38 037599219 2564 0390625

1031875 1332 040625107156 2764 042187111125 716 04375115094 2964 04531251190625 1532 046875123031 3164 0484375127000 12 05130969 3364 05156251349375 1732 053125138906 3564 054687142875 916 05625146844 3764 05781251508125 1932 059375154781 3964 0609375 158750 58 0625 162719 4164 064062 1666875 2132 065625 170656 4364 0671875 174625 1116 06875 178594 4564 0703125 1825625 2332 071875 186531 4764 0734375 190500 34 075194469 4964 07656251984375 2532 078125202406 5164 0796875206375 1316 08125210344 5364 08281252143125 2732 084375218280 5564 085937222250 78 0875226219 5764 08906252301875 2932 090625 234156 5964 0921875238125 1516 09375242094 6164 09531252460625 3132 096875250031 6364 0984375254000 1 10

INT

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mm FRACTIONS OF ONE INCH INCHES

8 wwwpnr-nozzlescom CTG SH 07 EU

LIQUID SPRAY AND SPRAY NOZZLESLiquid spray 9Spray nozzle types 11Spray nozzle coding 13Computerized fluid dynamics 14Spray generation 15Droplet spectrum 16Nozzle flow rate 19Spray angle 21Spray distribution 23Influence of liquid viscosity 27Influence of liquid specific gravity 29Jet impact 30Pressure drop through a nozzle 32

LIQUID SPRAY AND SPRAY NOZZLESLI

QUID

SPR

AYAN

D SP

RAY

NOZZ

LES

A nozzle is a device which converts the energy from a fluid into velocity of the spray dropletsApplications in many industrial processes are numberless with spray nozzles being very often a critical component in determining the final quality of the product or the efficiency of the processFor this reason the available nozzle range types for industrial applications can be found in PNR nozzle catalogue as well as a concise but complete information about the most important parameters which can give a technical definition of a spray and its qualityWe have grouped in the following the most useful formulas for designing a spray system showing the influence of the different factors which can affect the process of sprayingMore information about the working life of a nozzle and the best suited material for a given purpose can be found at page 17 of this publication AlI the following data when not otherwise specified refer to spraying water at 15deg C

9wwwpnr-nozzlescomCTG SH 07 EU

LIQUID SPRAY AND SPRAY NOZZLES Liquid spray

LIQU

ID S

PRAY

AND

SPRA

Y NO

ZZLE

S

LIQUID SPRAY AS A PROCESS

The process of spraying a liquid can be described as composed of two phases namely

1 Breaking up the liquid into separated drops2 Directing the liquid drops onto a surface or an object to achieve the desired result

The above two phases are normally performed by the types of nozzles being used in industrial processes at the same time by means of different techniques which shall be illustrated in the followingThe continuous progress in the manufacturing techniques in recent years has requested the nozzle manufacturer to make available to the industry an always more complete range of spray nozzle types to perform the different processes in a more efficient wayIt is the interest of the engineer using spray nozzles in manufacturing processes to become familiar with the different types of nozzles which are available today and with their individual characteristics in order to be able to choose the nozzle which performs with the highest possible efficiency on a given application

Spraying a liquid through a spray nozzle can serve different purposes among which the most important are the following

1 Cooling by means of heat transfer between the product itself and the liquid running on its surface2 Washing where the water directed onto the product takes away dirt or undesired substances from the product surface3 Humidifying with sprays carrying very little liquid quantities to the product surfaceinto a chamber or into a room4 Metering the desired liquid quantity in a unit of time into the product being handled5 Applying a product on a surface as in the case of spray painting or surface pre-treatment before painting6 Increasing the liquid surface to speed up heat transfer processes or chemical reactions and many others in numerous applications throughout modern industry

It is self evident that the best results for every application are only obtained when the right choices in terms of nozzle type flow value spray angle drop dimensions and nozzle material are madeThe purpose of the following pages is to give the reader the basic knowledge which is needed to properly select a spray nozzle for a given application

Spray nozzles

a spray nozzle is a device which makes use of the pressure energy of a liquid to increase its speed through an orifice and break it into dropsIts performances can be identified and described precisely so that the design engineer can specify exactly the spray nozzle required for a given process

The relevant characteristics which identify the performances of a nozzle are the following

1 The liquid flow delivered as a function of the nozzle feed pressure2 The opening angle of the produced spray3 The nozzle efficiency as the ratio between the energy of the spray and the energy used by the nozzle4 The evenness of the flow distribution over the target5 The droplet size distribution of the spray6 The jet impact of the spray

The above characteristics will be discussed in the following pages in connection with the different nozzle types

10 wwwpnr-nozzlescom CTG SH 07 EU

LIQU

ID S

PRAY

AND

SPRA

Y NO

ZZLE

S

TECHNIQUES FOR SPRAY PRODUCTION

Many different techniques can be used to produce a spray and most of them are used today for nozzles to be applied in industrial processes Based on the different techniques the following nozzle types can be used in industrial applications to generate a liquid spray

1 Pressure nozzlesThis is the simplest type of nozzles where an orifice is opened into a chamber where the liquid to be sprayed is fed under pressure A spray is produced through the orifice with spray pattern flow rate and spray angle depending upon the orifice edge profile and the design of the inside pressure chamberTypical pressure nozzles are the flat jet nozzles series GA J GX and GY

2 Turbulence nozzlesIn these nozzles the liquid moving towards the chamber preceding the orifice is given a rotational speed component so as to open up in a conical shape as soon as it leaves the orifice edge because of centrifugal force Based on the nozzle design and the technique used to generate the rotational speed the drops produced can be confined to the cone outer surface (hollow cone spray) or be evenly distributed to fill the entire volume of the cone (full cone spray)

3 Impact nozzlesHere the desired spray shape is obtained producing an impact of the liquid jet onto a properly designed surface The liquid jet is subsequently changed into a fluid lamina and then broken into drops with the desired spray pattern after leaving the nozzle edge

4 Air assisted atomizersFine and very fine sprays can be obtained by means of air assisted atomizers working upon various different principles More detailed information about air assisted atomizing can be found in our Catalogue Air assisted atomizers (ordering code CTG AZ18)

LIQUID SPRAY AND SPRAY NOZZLES Liquid spray

11wwwpnr-nozzlescomCTG SH 07 EU

LIQU

ID S

PRAY

AND

SPRA

Y NO

ZZLE

S

FULL CONE PATTERN

In a full cone spray the droplets are distributed into a volume which is limited by a cone having its origin point at the nozzle orifice Such spray pattern is commonly used in a large variety of industrial processes since it is the one which allows to distribute in an even way the water flow onto a surface the full cone spray pattern is therefore useful as a typical example to evenly spray cooling liquid on a still surface Another typical use is to distribute liquid droplets within a certain volume like for example evenly distributing water droplets in the inside volume of a cooling tower

Because of the wide number of processes performed by means of full cone nozzles the original shape has evolved into a range of specialised types where the full cone spray pattern or a pattern similar to a full cone one is obtained by different techniques

Standard full cone (turbulence nozzle)These nozzles use a specially shaped vane placed at the nozzle inlet to give a rotational speed to the fluid flowing through the nozzleBecause of the rotational speed of the fluid water exiting the nozzle orifice is subjected to centrifu-gal force and opens up in the shape of a full coneThe extent of the angle of the cone is a function of both exit speed (created from the inlet pressure) and the internal design of the nozzle It can vary in practice from 15deg to 120deg

These nozzles can be also produced as square full cone nozzles where the square shape of the pyramidal spray is obtained by a special design of the outlet orificeTwo important details have to be noted from the system designer when using these type of noz-zles

the spray angle is measured on the side of the square sectionbullthe square section of the spray rotates within the distance from the nozzle orifice to the bulltarget area

Spiral full cone (deflection nozzle)This is not properly a full cone but rather a continuous liquid curtain evolving with the shape of a spiral inside a conical volume The disadvantage of a scarcely even distribution is compensated by an exceptionally good resistance to plugging which makes this nozzle the best choice in those applications where safety or system reliability are the prime concern eg fire fighting systems

Multiple full cone (turbulence nozzle air atomizer)This spray pattern is used in two cases that is

1 When a wide spray angle is to be reached with nozzles which inherently can only produce a narrow one or in such cases where small size droplets and rather high capacities are required Therefore several nozzles are grouped in a cluster with different spray directions the resulting spray pattern occurs from the additional group of single nozzle sprays and the droplet size of the spray remains the same as one of single nozzle It must be noted that a smaller nozzle will normally make smaller drops as compared to a larger size nozzle of the same type operating under the same conditions

2 When it is necessary to obtain a wide angle jet using nozzles which inherently deliver a lim-ited angle spray In the case of a wide angle air atomizer for example the droplet distribution is obviously not homogeneous and the result is rather a number of small angle sprays with different directions but still the liquid is atomized towards all the parts of the volume to be treated

LIQUID SPRAY AND SPRAY NOZZLES Spray nozzle types

Standard full cone

Spiral full cone

Multiple full cone

12 wwwpnr-nozzlescom CTG SH 07 EU

FLAT JET SPRAY PATTERN

In a flat jet spray the liquid droplets are sprayed in the shape of a flat liquid layer with different thickness according to the principle used to generate the spray A flat jet spray nozzle serves the purpose of spraying onto a surface or an object moving in a transverse direction with respect to the one of the jet surface a typical example being the nozzles in a car washing tunnel The vast majority of flat spray nozzles used in the industry work according to one of the following principles

In line flat jet (pressure nozzle)This is the general purpose flat jet nozzle where the liquid enters the nozzle in line with the axis length and is fed to a pressure chamber from where it is ejected through the nozzle orifice Flow value and spray angle are determined respectively from the orifice cross section and the orifice edge profile

In line straight jet (pressure nozzle)These nozzles can be considered a special kind of flat jet nozzle with naught degree spray angle They are designed to produce a sharp stable stream with powerful impact on a given point and serve normally to perform cleaning processes or to cut soft materials

Spoon flat jet (deflection nozzle)In this type of nozzle the liquid is fed under pressure to a round outlet orifice and then deflected onto a smooth profiled surface so as to assume a flat jet shape This sophisticated design is of advantage since it offers a stronger jet impact using the same feed pressureHigher efficiency comes from the very little energy required to just change the direction of the liquid flow this being the only energy required to generate the flat jet

HOLLOW CONE SPRAY PATTERN

A hollow cone spray pattern consists of droplets concentrated onto the outer surface of a conical shape volume with no droplets contained in the inside of the conical jet shape These nozzles are normally used for smoke washing or gas cooling applications in several industrial processes

Hollow cone (turbulence nozzle)These nozzles use a tangential injection of liquid into a whirling chamber to generate centrifugal forces which break up the liquid vein as soon as it leaves the orifice Precisely designed orifice profiles making use of the Coanda effect provides the ability to obtain very large spray angles

Hollow cone (deflection nozzle)A hollow cone can also be obtained taking a liquid flow to change direction onto a properly designed surface in order to break the liquid into droplets and distributing them as a hollow cone spray patternThis kind of nozzle is mainly used for applications in dust control and fire fighting systems

LIQUID SPRAY AND SPRAY NOZZLES Spray nozzle typesLI

QUID

SPR

AYAN

D SP

RAY

NOZZ

LES

13wwwpnr-nozzlescomCTG SH 07 EU

PNR CODING SYSTEM

As any other industrial product spray nozzles need to be precisely identified by means of a code in order to avoid mistakesPNR coding system has been designed with the following requirements in mind

Codes must be easily processed by a computer in ascending orderbullCodes must describe completely the product without any need for additional descriptionbullCodes must show to the user the basic specifications of the nozzle in order to ease the search in the cataloguebull

We have therefore determined our coding system described as follows

LIQUID SPRAY AND SPRAY NOZZLES Spray nozzle coding

LIQU

ID S

PRAY

AND

SPRA

Y NO

ZZLE

S

AA U X YB312 305

Thread type or other connection

Special features

Nozzle material code (see below)

The three digits give the nozzle capacity in lpm at 3 bar according to rank value

Rank of flow value see table below

Nozzle spray angle see table below

Nozzle type as described in the catalogue pages shown in ascending order

Nozzle tables report on a blue background the nominal flow value measured at 30 barFlow values at different pressures have been calculated

These codes serve as an indication onlyBased on different types of nozzles their significance can occasionally be different

CAPACITY RANK

Rank Flow digits Actual flow (lmin)

0 0 490 049

1 1 490 490

2 2 490 490

3 3 490 490

4 4 490 4900

SOME SPRAY ANGLE CODES (DEGREES)

A = 0 L = 40 T = 80

B = 15 M = 45 U = 90

C = 20 N = 50 J = 110

D = 25 Q = 60 W = 120

F = 30 R = 65 Y = 130

H = 35 S = 75 Z = 180

A1 Carbon steel D6 Glassfibre reinforced PP L2 Incolloy 825

A2 High speed steel D7 High density polyethilene L8 Hastelloy C276

A8 Zinc coated steel D8 Polyvinylidenefluoride (PVDF) P6 Acr But Styrene (ABS)

A9 Nickel coated steel E0 EPDM P8 EPDM 40 Shore

B1 AISI 303 Stainless steel E1 Polytetrafluorethylene (PTFE) T1 Brass

B2 AISI 304 Stainless steel E2 PTFE (25 glassfibers) T2 Brass chrome plated

B21 AISI 304 L Stainless steel E31 Acetalic resin (POM) T3 Copper

B3 AISI 316 Stainless steel E7 Viton T5 Bronze

B31 AISI 316 L Stainless steel E8 Synthetic rubber (NBR) T8 Brass nickel plated

C2 AISI 416 Stainless steel hardened F5 Ceramic T81 Brass electroless nickel plated

D1 Polyvinylchloride (PVC) F31 Ruby insert 303 body V1 Aluminum

D2 Polypropylene (PP) G1 Cast iron V7 Aluminum electroless n plated

d3 Polyamide (PA) H1 Titanium

D5 Talcum filled Polypropylene L1 Monel 400

NOZZLE MATERIAL CODES

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LIQUID SPRAY AND SPRAY NOZZLES Computerized fluid dynamics

The customers demand for an always higher efficiency requires to use not only the best tooling but in addition control instruments and design methods always more sophisticated like for example new software for obtaining the velocity distribution of a fluid flowing through a conduit

These software programs require that the geometry of the inner con-duit to be geometrically defined and in addition the process conditions ( pressure temperature fluid capacity ) and the fluid properties ( specific weight viscosity ) to be Introduced

Based on the above data it is pos-sible to obtain a very precise dis-tribution for the velocity value in each single point of the conduit both under numeric form and flow diagramsThese Information make it possi-ble as an example to minimize the flow turbulence and consequently to Increase the nozzle efficiency through an increase in the fluid exit velocityThis is of basic Importance for some kind of nozzles for example those nozzles required to supply an high impact jet when performing descal-ing processes in a rolling millBy trial and error it is also possible to eliminate problems like jet Instability or cavitation

The overall process efficiency in the flow path before the nozzle can also be considered which often results into the design of geometry modifi-cation or the Introduction of special flow improving profiles along the conduit

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The diagram on the right shows the idealization of the process generating the droplets while the water jet exiting the nozzle is breaking up The theoretical model whose exactitude seems to be confirmed by scientific research considers that the liquid flowing through the nozzle and past the orifice edge evolves into a liquid lamina This lamina because of instability induced by aerodynamic forces breaks up first into elongated ligaments more or less cylindrical and later into droplets

Taking the above process as a guideline one can easily appreciate that the average droplet diameter is some what related to several factors like

1 The thickness of the lamina itself2 The evenness of the lamina 3 A steady flow and break up process

For what has been said above and limited to hydraulic nozzles the system designer looking for fine droplet sprays should consider that the following results can be expected

Impact nozzles best

Centrifugal hollow cone nozzles multiple full cone nozzles good

Turbulence nozzles fair

Centrifugal Vaneless full cones worst

The above choice is obviously based on the droplet generation process which changes from one nozzle type to another and allows to forecast which type is best fro the applicationAn additional consideration of interest is that the expected droplet size changes for the same type of nozzle with the nozzle size it is possible to generate smaller drops spraying the same water quantity at the same pressure using a greater number of smaller nozzles

In cases where energy requirements are not a problem or where a specified small droplet diameter is required the smal-lest droplets can be obtained by means of an air assisted atomizerHere the shear action of a high speed compressed air flow is used with several different techniques to obtain a value for SMD (Sauter Mean Diameter) of 50 microns and less

LIQUID SPRAY AND SPRAY NOZZLES Spray generation

Theoretical Mechanism of droplet generation

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SLIQUID SPRAY AND SPRAY NOZZLES Droplet spectrum

The atomization of a liquid by means of a compressible fluid like air steam or a gas is defined pneumatic two-phase or twin-fluid atomization Many industrial processes require the availability of finely atomized droplets and the techniques to produce atomized jets have been largely improved in the recent years In addition more sophisticated process techniques have incre-ased the demand for a precise definition about the characteristics of the spray and are now available to the design engineer Since many years PNR can supply upon request complete documentation containing test reports about the more interesting and additional information which are described below for all PNR products

Laser Interpherometer Test (By Pdpa)

PNR droplet size test reports are performed by means of a Laser Interpherometer (Phase Doppler Particle Analyzer) where two laser beams cross in a given point of the spray and define a test probe area Droplet flying through the probe area cause a light scatter which is picked up by the instrument receiver and processed through a computer in order to obtain relevant information about the spray characteristics

Report information

Report information is made of data printed on three pages where the first page contains the most interesting data which make possible to base process calculations upon precise data about spraying degrees process efficiency and jet behavior in operational ambiance These pages contain the Sauter Mean Diameter value whose knowledge is of special importance in heat exchange calculations about evaporative gas cooling processes since it gives the possibility of evaluating the exchange surface obtained by atomizing for a given liquid volume

The upper picture at page 18 referring to atomizing water by means compressed air shows two following histograms

bull Distribution curve of droplet diameter (micron)

bull Distribution curve of droplet velocities (mps)

and the below described values

bull Arithmetic Mean Diameter (D10)

bull Surface Mean Diameter (D20)

bull Volume Mean Diameter (D30)

bull Sauter Mean Diameter (D32)

ARITHMETIC MEAN DIAMETERThis is a diameter value which multiplied by the local num-ber of droplets in the sample equals the addition of alI droplets diameters

SURFACE MEAN DIAMETERThis is the diameter of such a droplet whose surface mul-tiplied by the total droplets number equals the sum of alI droplets surfaces

VOLUME MEAN DIAMETERThis is the diameter of such a droplet whose volume mul-tiplied by the total droplets number equals the sum of all droplets volumes

SAUTER MEAN DIAMETERThis is the diameter of such a droplet whose volumearea ratio equals the ratio between the sum of alI droplet volu-mes divided by the sum of alI droplet surfaces

D10 = Σ i ni di

Σ i ni

D20 = Σ i ni di

2

Σ i ni

D30 = Σ i ni di

3

Σ i ni

D32 = Σ i ni di

3

Σ i di

2

3

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AttemptsDroplet number crossing probe area during test time This includes both validated and not validated droplet

Correct Count Criteria A mathematic correction is applied to validate droplets which cross Probe Area in a peripheral belt or to droplets without a perfect spherical shape so that alI validated droplets parameters are homogeneous (This correction is necessary so that there is direct proportionally between laser beam phase and droplet number diameter)

Number Density It is the number of droplets passing through probe area within test time

Probe areaThis is the area where the two laser beams are crossing so determining the probe area AlI droplets intersecting probe area are checked droplets which respect given parameters for shape are taken as valid droplets and make up the sample whose size and velocity parameters are reported

ValidationsDroplets accepted based on given shape parameters to make up for test sample

Velocity MeanDroplets distribution speed histogram (ms)

Volume Flow RateIt is the volume measured in cubic centimeter per second of the validated droplets making up for the sample

Volume FluxIt is the flow rate per specific area measured in cubic centimeter per second and square centimeter of the validated droplets making up the sample

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LIQUID SPRAY AND SPRAY NOZZLES Droplet spectrum

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SLIQUID SPRAY AND SPRAY NOZZLES Droplet spectrum

PNR can supply upon request complete documentation con-taining test reports about the aforementioned parameters and additional information for all PNR atomizersThe diagrams beside show the distribution of droplet diameters and droplet velocities of a spray under test as available to our customers

In the photo beside a test being performed at our laboratoriesWe use a computer driven laser interpherometer to detect and record the spray parameters while fluid capacities and feed pressure values are monitored through high precision instru-ments

IMPORTANT NOTE

The droplet size values measured with a PDPA instrumentation are representative of a well specified volume inside the spray and taking measurements in a different volume they can be considerably differentA correct spray droplet size characterization requires then not only tests being performed in several volumes within the spray but also that those measure volumes are selected with regard to the process the droplets are expected to performAs an example the droplet characterization of a spray should define how many volumes have been tested and which are the coordinates of each single test volume in relation to the nozzle orifice

Most of the times pretending to describe the droplet spectrum of a spray nozzle at a given pressure with only one diagram is therefore not correct

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In order to calculate the discharge flow rate from a given nozzle the Bernoulli law shall be used which says that the energy of a liquid flow remains unchanged over alI the sections of the flow Friction and turbu-lence losses are neglected which is reasonable for our purposes if the cal-culation is performed over two sections not too far away from each other

The Bernoulli law can be written as follows

Therefore if we consider two sections of the same pipe section A and section B we can write that the flow energy remains constant in the form

If we finally consider that the two above sections are taken immediately before and immediately after the nozzle outlet orifice being

ZA = ZB PB = 0 (PA is a differential pressure referred at the atmosphere pressure)

VA cong 0 negligible as compared to VB (for orifice diameter much smaller than the duct diameter)

we shall come to the formula

When we define a new constant k to include the value of the nozzle orifice outlet area (A) then we come to the following equation which says that for a nozzle spraying into a room at ambient pressure the exiting flow is proportional to the feed line pressure

Considering now two different pressure values for the same nozzle since k is a constant quantity we can write that

and derive from the above an equation that makes it possible to calculate the nozzle flow value at any given pressure value once the flow value at another pressure value is known

The energy of a given liquid flow crossing a given pipe section is composed of three parts namely

P Pressure energy of liquid particle per volume unit

1 ρV2 Kinetic energy of liquid particle per volume unit2ρgz Potential Energy of liquid particle per volume unit

Where ρ = density of liquid g = gravitational acceleration

z = height respect to one plane of reference V = liquid velocity

PA = 1 ρVB 2 rArr

2

K = Q rArr

PK =

Q1 = Q2 rArr

P1 P2

Q = A V rArr

Q = A x C x P rArr

1 P + 1 ρV2 + ρgz = E

2

VB = 2 PA rArr ρ

Q1 = P1

Q2 P2

3 V = C P

4 Q = K P

2 PA + 1 ρVA 2 + ρgzA = PB + 1 ρVB

2 + ρgzB 2 2

EXIT VELOCITY DEPENDS UPON PRESSURE

NOZZLE CAPACITY DEPENDS UPON PRESSURE

NOZZLE CAPACITYAT A DIFFERENT PRESSURE

5 Q2 = Q1 P2

P1

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LIQUID SPRAY AND SPRAY NOZZLES Nozzle flow rate

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SLIQUID SPRAY AND SPRAY NOZZLES Nozzle flow rate

The Equation (5) has been obtained after having simplified the real problem neglecting several factors like for examplebullInmostofthepracticalapplicationcasestheflowisturbulentandnotlaminarbullFrictionlossestendtostronglyincreasewithliquidvelocitybullDependinguponthetypeofnozzleadifferentpercentageoftheavailableenergyisusedtobreakupthejetandgivethe

desired spray pattern and spray angle

For the above reason equation (5) gives reliable results if used in a limited pressure range around the pressure value where the flow rate is known with this pressure range depending upon the type of nozzleOur experience has shown that one can expect the error in the calculated value to be lower than +- 6 for pressure values ranging from 13 to 3 times the reference value

As an example a nozzle rated for 10 lpm at 3 bars would have according to equation (5) the following flow valuesa 1 bar 577 lpma 9 bar 173 lpmin real conditions it can be expected the flow rate values to beas high as 61 lpm a 1 baras low as 162 lpm a 9 barAbove considerations are to be used as a guideline only because of the many factors influencing real operations which have not been considered here for example liquid temperature viscosity and density

Possible percentage deviation from theoretical flow rate values

Also above mentioned percentage errors have to be understood for nozzles using part of the flow energy to produce wide angle spray patternsLower values can be expected for narrow angle nozzles impact nozzles and straight jet nozzles Laboratory tests and diagrams showing real flow rate values for each nozzles are used in practice when a precise result must be available

Nozzle discharge coefficient

With reference to equation (4) if we consider the pressure value to be equal to 1 (P = 1 bar) the flow rate of the nozzle becomes

K is a parameter widely used in the fire fighting industry

In some instances reference is made to the nozzle discharge coefficient or shortly to the nozzle coefficient to indicate the nozzle flow rate for a unitary pressure Of course for a given pressure value Pn the flow value will be

+ 6

+ 3

- 3

- 6

CAPACITY AT A GIVEN PRESSURE VALUEWHEN K KHOWN

NOZZLE CAPACITYFOR P=1 barQ = K P = K 1 = K

6 Qn = K Pn

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The spray angle is the opening angle which the nozzle jet of droplets forms at the moment when it leaves the nozzle orifice and it is one of the fundamental parameters for the choice of a given nozzleIn fact the amplitude of the spray angle determines in connection with the distance between the nozzle orifice and the target to be covered the spray coverage and the density of liquid sprayed with respect to the cover area See our Catalogue for description of the different nozzle spray patterns The table at the bottom of the page gives the theoretical spray width based on the nozzle spray angle and the distance from the nozzle orifice It is important to note that because of several factors like gravity forces and aerodynamic drag the spray angle value cannot be maintained but in in a limited distance normally up to 300 mm from the orifice For air assisted atomizers it is improper to use the term spray angle since no precise value can be measured Therefore the values given by Catalogues are to be intended as guidelines only

THEORETICAL SPRAY COVERAGE

at various distances from nozzle orifice

Spray 50 100 150 200 250 300 400 500 600 700 800 1000 Angle mm mm mm mm mm mm mm mm mm mm mm mm

15deg 13 26 40 53 66 79 105 132 158 184 211 263 25deg 22 44 67 89 111 133 177 222 266 310 355 443 30deg 27 54 80 107 134 161 214 268 322 375 429 536 35deg 32 63 95 126 158 189 252 315 378 441 505 631 40deg 36 73 109 146 182 218 291 364 437 510 582 728 45deg 41 83 124 166 207 249 331 414 497 580 663 828 50deg 47 93 140 187 233 280 373 466 560 653 746 933 60deg 58 116 173 231 289 346 462 577 693 808 924 1150 65deg 64 127 191 255 319 382 510 637 765 892 1020 1270 70deg 70 140 210 280 350 420 560 700 840 980 1120 1400 75deg 77 154 230 307 384 460 614 767 921 1070 1230 1530 80deg 84 168 252 336 420 504 671 839 1010 1180 1340 1680 90deg 100 200 300 400 500 600 800 1000 1200 1400 1600 2000 95deg 109 218 327 437 546 655 873 1090 1310 1530 1750 2180 100deg 119 238 358 477 596 715 953 1190 1430 1670 1910 2380 110deg 143 286 429 571 714 857 1140 1430 1710 2000 2290 2856 120deg 173 346 520 693 866 1040 1390 1730 2080 2430 2771 3464 130deg 215 429 643 858 1070 1290 1720 2150 2570 3002 3431 4289

WhereASCbull = Actual Spray CoverageTSCbull = Theoretical Spray CoverageASAbull = Actual Spray AngleTSAbull = Theoretical Spray AngleL bull = Spray Distances

TSC = 2 middot L middot ctan ( TSA )2

7

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LIQUID SPRAY AND SPRAY NOZZLES Spray angle

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SLIQUID SPRAY AND SPRAY NOZZLES Spray angle

Depending upon the nozzle design variations of feed pressure may have a great influence on the spray angle valueGenerally with increasing pressure turbulence full cone nozzles will produce narrower angles flat jet nozzles will show a wider angle spray while nozzles working on the deflection principle like spiral nozzles and K style flat jet nozzles will be less affected by pressure changesAll nozzles will not function properly with very low pressure values (from 05 bar down depending upon nozzle type ) with a marked decay in performance larger drops not well defined spray pattern lower spray angle values

The above pictures show spray angles for different nozzles and different pressure valuesShould your application strictly require that a given value of the spray angle is obtained under a given pressure value or pressure range of values please obtain a test report from our laboratories

Full cone nozze DDW 2235

Flat jet nozzleJCW 2245

Spiral nozzeECW 2230

Pressure 05 bar Pressure 05 bar Pressure 05 bar

Pressure 3 bar Pressure 3 bar Pressure 3 bar

Pressure 10 bar Pressure 10 bar Pressure 10 bar

Photo obtained with 120000s flashlight

picture 1

picture 4

picture 7

picture 2

picture 5

picture 8

picture 3

picture 6

picture 9

NotePicture 2 shows clearly the droplet generation mechanism as described at page 15

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Terms and definitions

A very important characteristic of a spray nozzle is a parameter called Spray Distribution which gives a precise information about how evenly the drops of the spray are distributed onto the area covered by the sprayIt is self understood that normally it is preferable to obtain the most even distribution possibleIn the past this was done through the visual examination of a diagram reporting the quantity of water contained for example in glass pipes aligned onto the spray coverage areaPnr has determined to obtain such a result in a scientific way through high technology instrumentation as shown in the pictures below showing one of our patternators and a typical distribution diagram

Now to the spray geometry and some definition letrsquos consider a nozzle with a capa-city Q at the pressure PAt every value for distance H which we call height of spray we can define a plane lsquonrsquo normal to the nozzle axis on which a line can define the intersection of the spray onto the planeThe area covered by the spray on the plane lsquonrsquo has a surface S depending from the following parametersa) Spray pattern Fb) Opening angle of the spray αc) Height of the spray H

We can then write S=S( F α H )

In case of a full cone nozzle S is a circle with diameter C and S = 0785 C2

The capacity of the nozzle flows through the surface S but each smaller area inside the surface S will probably have a different value for the flow passing through itWe introduce then the value of Specific Capacity q

1) Specific Capacity

The function q depends upon the single point (xy) in the section S and then

Determining the function q is however very expensive therefore in practice two different functions are used which give in most occurrences sufficient information

2) Linear Distribution

3) Angular distribution

part Qpart x

qx =

Diagram 1

q = limΔS 0

ΔQΔS

q = = f (x y H)part Qpart S

part Qpart φ

qφ =

ΔQ is the liquid flowing through a surface ΔSwhere ΔS is a fraction of the surface S

x and y are the local coordinates in the section planewhere H is the distance of the test surface from the nozzle orifice

partQ is the variation in capacitywhere partx is the variation of a generic linear coordinate

partQ is the variation in capacitywhere partφ is the variation of a generic angular coordinate

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LIQUID SPRAY AND SPRAY NOZZLES Spray Distribution

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LIQUID SPRAY AND SPRAY NOZZLES Spray Distribution

Values extracted from these functions can characterize the spray and allow for drawing the diagrams defined as Distribution Curves

Analyzing the above curves it is possible to determine the type of water distribution along the spray coverage and the type of spray pattern like for example a full cone hollow cone flat or straight jet spray

Distribution measurement

The water distribution along the spray coverage is determined by means of an instrument called Patternator

A patternator consists of the following parts 1) Liquid collector2) Cell block3) Measure block4) Unloading block

The nozzle is above the instrument and it is orienta-ted in such a way the jet is collected into the upper liquid collectorThe liquid collector can be linear ( diagram 5 ) or round ( diagram 6 ) according to the test being runFrom the single parts in the collector the liquid is sent into the corresponding cells below (2)

The Measure block (3) determines the liquid content in each single cell then the unloading block (4) empties the instrument sending the liquid to the collection drain

There are two types of patternators

Analogic1 the different levels of liquid is visible through the transparent walls of the cells or pipes sometimes containing some kind of floating balls and a picture can be taken with a cameraDigital2 Delivering an automatic reading of the values in the cells the values being supplied as an electronic file from which a distribution curve can be easily obtained

Diagram 2 Linear distribution Diagram 3 Angular distribution

Diagram 4

Diagram 6 Circular collectorDiagram 5 Linear collector

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LIQUID SPRAY AND SPRAY NOZZLES Spray Distribution

Normalizing distribution curve

The values obtained from the cells of the patternator showing the water quantity collected in the single cells allow for preparing a Distribution curve which can be given as a single line curve or as a row of vertical barsThese resemble the liquid level collected into the glass pipes of the old type instrumentation

The curves prepared based on the liquid level in the single cells still are not precise they depend in fact from the testing time the longer this time the larger the liquid quantity sprayedTo eliminate the influence of time from the test it is necessary to transform the effective curves to normalized curves

Normalized4) linear distribution

Normalized5) angular distribution

Please note that Maximum value is the one belonging to the series of values measured in the cellsIn addition to the distribution it is possible to normalize the intervals to with the following formulas

Normalized 6) linear interval

Normalized 7) angular interval

The linear normalized amplitude is defined inside an interval [-1 +1]The angular normalized amplitude is defined inside an interval [0+2π]

Diagram 7 Effective linear distribution curve Diagram 8 Effective angular distribution curve

Mx

xx q

q=δ

N

πθ

2=Δ

Diagram 9 Normalized linear distribution curve Diagram 10 Normalized angular distribution curve

qx is the linear distribution of a generic cellwhere qx

M is the maximum linear distribution measured

qφ is the linear distribution of a generic cellwhere qφ

M is the maximum linear distribution measured

2 is the normalized linear amplitude of the spraywhere N is the number of active cells (active cells = cells containing liquid)

2π is the normalized angular amplitude of the spraywhere N is the number of active cells (active cells = cells containing liquid)

Mq

q

ϕ

ϕϕδ =φ

φ

φ

2

N=Δλ

2

N=Δλ

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Evaluation of spray distribution

To evaluate distribution curves it is necessary to take three properties into consideration

a) UNIFORMITY b) MONOTONY c) SIMMETRY

As described in the following diagrams and definitions

a) UNIFORM A distribution that minimizes the ratio AAdeg

b) MONOTONE Is a distribution with a curve which grows on the left side and decreases on the left side c) SYMMETRIC Is a distribution which minimizes the Ratio A+A-

Based on the above definitions the following curves show the ideal situations

The three properties are then evaluated by means of the following parameters

1 Integral uniformity

2 Incremental uniformity

3 Symmetry index

Complete details about the above formulas and definition can be found in our Technical Bulletin REL 080002 which shall be released from our Technical Department on request

Diagram 12Normalized and monotone distribution

Diagram 11Normalized and monotone distribution

Diagram 14Ideal monotony

Diagram 15Ideal symmetry

Diagram 13Ideal uniformity

1001 sdot=MA

AU

1002

2 sdot=lowastσ

U

1001

sdot⎥⎦

⎤⎢⎣

sdotminus=

lowast

lowast

δ

ε

NI S

sum minus=lowast

M

i iδδε

A is the area included in the normalized curvewhere Adeg is the rest of the area included in the 2x1 rectangle

Left side is the area -1 0where Right side is the area 0 +1

A+ is the area included below the curve on the right sidewhere A- is the area included below the curve on the left side

where

where δrsquo is the value of normalized liquid content in the symmetric cell N number of cells containing liquid in half of the diagram

lowast

lowast sum=

N

N

i i

δ

δ N Number of cells containing liquid

A area included below the curve AM area included below the ideal curvewhere

sum minus= +lowast

1

N

i ii δδσ

N Number of cells containing liquid

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SLIQUID SPRAY AND SPRAY NOZZLES Spray Distribution

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Liquids are characterized for their property of undergoing continuous deformation when subjected to shear stress The property of fluids (liquids or gases) to resist flowing due to the existence of internal friction within the fluid is called visco-sity

Thus if we imagine the different layers of fluid sliding one over the other with friction we can imagine that viscosity is defined the force required to move a unit area of fluid for a unit distance Viscosity is measured with many different systems among which the most used are the following

The following table shows correspondences between the most used viscosity units

The viscosity value of a liquid depends upon the temperature therefore the viscosity value must always be given with reference to a temperature value The viscosity of water (20deg C) is 1 Centipoise and 1 Centistoke since water mass density = 1

KINEMATIC SAYBOLT SAYBOLT ENGLER VISCOSITY UNIVERSAL FUROL

Centistoke Sq feetsec SSU SSF Degrees

100 000001076 310 --- 100

500 000005382 424 --- 137

1000 00001076 588 --- 183

1566 00001686 80 --- 245

2052 00002209 100 --- 302

2515 00002707 120 --- 357

4295 00004623 200 --- 592

1080 0001163 500 523 1460

1510 0001625 700 720 2044

1942 0002090 900 921 2628

3023 0003254 1400 143 4090

3885 0004182 1800 183 5260

5394 0005806 2500 254 7300

10788 001161 5000 509 146

15103 001626 7000 712 204

19419 002092 9000 916 263

32365 003483 15000 1526 438

METHOD UNIT DIMENSIONS NOTES

1 Dynamic viscosity(Absolute viscosity) Poise ML T-1 Poise = 100 Centipoises = (1 dyne per seccm2)

2 Kinematic viscosity Stoke L2 T-1 1 Stoke = 100 Centistoke = (cm2sec)Kinematic viscosity = Dynamic viscositydensity

3 SSUSSF

One of the most widely instruments to determine is the Saybolt viscosimeter which measures the time in seconds required for a fixed volume of a given liquid to flow through an orificeSSU = Seconds Saybolt Universal relates to a smaller orifice for less viscous liquidsSSF = Seconds Saybolt Furol relates to a larger orifice for more viscous liquids

LIQUID SPRAY AND SPRAY NOZZLES Influence of liquid viscosity

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Viscosity influence on nozzle flow rate

AlI nozzle Catalogue data refer to spraying water (water cinematic viscosity is equal to 1 Centistoke)A liquid with viscosity higher than water will require more energy to be pumped and sprayed and will flow with lower velocity at the same pressure and this will cause a reduction in the turbulence of the flow For the above reason nozzles working on the turbulence principle like normal full cone nozzles and whirl hollow cone nozzles will show an increase in capacity while spraying liquids with viscosity higher than water This increase is very consistent for small size nozzles where the small radius of the whirl chamber tends to cause high turbu-lence in the flow and tends to diminish and to disappear for nominal capacity valves (capacity values at 3 bar) larger than 15 liters per minute

The graph below shows for a liquid with a viscosity of about 4 Centistokes typical variations in the nozzle flow rate value for different values of the nozzle whirl chamber diameter As it may be seen these variations can be neglected in most practical applications where nozzles with whirl chamber diameters well over 3 mm are used

For other types of nozzles not working on the turbulence principle the increase on viscosity will simply reduce the liquid exit velocity at the orifice thus causing a decrease in capacity Experience shows that this decrease ranges between 3 and 6 of nominal water capacity that is to say that the variation introduced is in the same order of magnitude as the nozzle flow rate toler-ance

Viscosity influence on nozzle spray angle and spray pattern

With reference to the theory of jet break-up and droplet information it can be easily imagined that spraying a liquid more viscous than water is a difficult task

Al the properties of the spray tend to worsen therefore one can expectA higher value for the minimum operating pressure that is the pressure value which allows for obtaining a well defined 1 spray with the expected spray angle A worse spray distribution since the viscous behavior of the liquid makes it more difficult to pro-duce fine droplets and 2 to distribute them evenly with the desired spray pattern A narrower spray angle It is difficult to give guidelines since results on different nozzles at different pressures and with 3 different liquids are scarcely predictableHowever our experience shows that in many cases the use of impact nozzles can give acceptable results where all other type of nozzle failsA laboratory test or a field test are stili the safest way to obtain sound results

50

45

40

35

30

25

20

15

10

5

0 2 3 4 5 6 7 8 9

Increase Flow rate vs Whirl Chamber Diameter

Incr

ease

Flo

w R

ate

[mm

]

Whirl Chamber Diameter [mm]

LIQUID SPRAY AND SPRAY NOZZLES Influence of liquid viscosityLI

QUID

SPR

AYAN

D SP

RAY

NOZZ

LES

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With reference to the Bernoulli Rule as exposed in page 6 one can say that the pressure energy of the liquid flow at the nozzle inlet is transformed totally (minus some losses due to friction inside the nozzle) into liquid velocity at the nozzle orificeCatalogue figures give nozzle capacities when spraying waterIf the specific gravity or density of the liquid is different from that of water the available pressure energy will produce a different liquid velocity at the nozzle orificesIn other words a given quantity of energy will spray always the same quantity of liquid mass but different volumes (flow rates) according to the liquid specific gravity or density

Therefore a liquid heavier than water will exit the nozzle with a lower velocity at lower flow rate while to the contrary a liquid lighter than water will be sprayed at higher velocity at higher flow rate

The following formula is to be applied

The table below gives the value of a correction factor to obtain the flow rate of a liquid with different specific weight as water

WhereQL Liquid flow rateQW Water flow rateF Correction factor

kgliter Libregallon F

06 50 129

07 58 120

08 67 112

09 75 105

10 83 100

11 92 095

12 100 091

13 109 088

14 117 085

15 125 082

16 134 079

17 142 077

18 150 075

19 159 073

20 167 071

QL = F QW8

LIQUID SPRAY AND SPRAY NOZZLES Influence of liquid specific gravity

LIQU

ID S

PRAY

AND

SPRA

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ZZLE

S

30 wwwpnr-nozzlescom CTG SH 07 EU

The spraying water impact of a nozzle depends on several factors and more precisely spray distribution pattern and spray angle The first step to calculate the impact value which is usually expressed in Kilograms per square centimeter is to deter-mine Total Theoretical lmpact Value using the following formula

The obtained value has to be multiplied by the Total Theoretical Impact per Square Centimeter Coefficient (E)The final value is the Spraying Liquid Impact expressed in kgpcm2Of course not alI the energy of the fluid vein is transferred to the impact point

A part of this energy sometimes a considerable part goes to obtain a desired spraying angle by having the liquid vein acquire a high rotational speed inside the whirl chamber The highest value of impact is obtained with straight jet nozzle and the value can be calculated multiplying spraying pressure per 19The tables below containing the Total Theoretical Impact sqcm coefficient values for different spray pattern nozzles for a dis-tance of 300 mm

[kgpcm2]

TOTAL THEORETICAL IMPACT PER SQ CM COEFFICIENT AT DISTANCE OF 300 MM (E)

Spray Flat jet nozzle Spray Full cone nozzle Spray Hollow cone nozzle Angle Angle Angle

15deg 0300 15deg 0110 25deg 0180 35deg 0130 30deg 0025 40deg 0120 50deg 0100 50deg 0010 65deg 0070 65deg 0004 60deg80deg 001002 80deg 0050 80deg 0002 100deg 0001

WhereQ is the flow rate at working pressure in lpmP is the pressure value in kgpcm2

[kgpcm2]TTI = 0024 Q P

SLI = E TTI

9

10

LIQU

ID S

PRAY

AND

SPRA

Y NO

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SLIQUID SPRAY AND SPRAY NOZZLES Jet impact

31wwwpnr-nozzlescomCTG SH 07 EU

Jet impact diagram

A further parameter to characterize the performance of a spray nozzle is the distribution of the jet impact force which could be derived by means of mathematical methods from the values of the spray distribution onto the surface covered by the spray but which can more easily be measured with the help of specifically designed instrumentation

In some applications the jet impact force Is the most important parameter used to realize the required processSteel sheet descaling in a rolling mill is a typical example where the jet impact is required to take away the surface scale and obtain a perfectly even surfaceFor that reason special nozzles have been developed to perform this very task where service life impact value and spray distribution reach the values required for satisfactory resultThese test are performed in a laboratory equipped with a specifically designed instrumentation where the high pressures involved in these process can be reached which can measure the pressure values along a matrix of points distributed in the spray area covered by the nozzle

These values are supplied both in a table of values and as a 3D pressure diagram similar to those shown below

On such applications where producing high impact values in the jet is necessary it is of paramount importance that the liquid flow turbulence is kept to a minimum and therefore it is widely used to insert into the nozzle entrance devices designed to improve the operating conditions by forcing the liquid flow through straight passages with several different shapes by doing so the impact delivered by the spray is increased with the same feed pressure

One typical shape used by Pnr is shown on the right and the two dia-grams below show the impact force diagrams for the same nozzle with and without a flow straightener the reduction of flow turbulence can lead in increase of impact force often higher than 20Further improvements of course are available when the nozzle inside profile is properly designed in order to avoid sharp cross section changes and all surfaces are finished as smoothly as possible

Typical design of a Pnr flow straightener

Impact pressure diagram with flow straightenerImpact pressure diagram without flow straightener

LIQU

ID S

PRAY

AND

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Y NO

ZZLE

S

LIQUID SPRAY AND SPRAY NOZZLES Jet impact

32 wwwpnr-nozzlescom CTG SH 07 EU

LIQUID SPRAY AND SPRAY NOZZLES Pressure drop through a nozzle

Pressure drop through a nozzle

Some of our customers have asked us In the past which Is the pressure drop through a nozzle since they consider a nozzle one of the parts in a piping like a valve or an elbow which causes a given pressure drop along the line

The reality is different and can be easily understood when considering the Bernoulli formula [2] as given at page 19 of this manual the formula says that the total energy of a liquid flow is made from the addition of three facors

Potential energy due to elevationbullPressure energybullVelocity energybull

When we apply the formula at the entrance and at the outlet ( the orifice ) of a nozzle and we neglect the influence of turbulence losses in between we can easily see that

The potential energy variation can be neglected because of the limited dimensions of the nozzle since the distance bullbetween the nozzle entrance and the nozzle orifice plays no role-The pressure energy variation is important since the liquid pressure value falls abruptly from the pressure inside the feed bullpipe to the ambient pressureThe velocity energy variation is also consistent since the liquid is ejected from the orifice at high speedbull

In other words the pressure energy of the liquid flowing through the orifice is suddenly transformed in liquid drops velocity which is exactly what a nozzle is designed to do

This is shown from equation [3] at page 19 which allows the exit velocity from the nozzle to be calculated from the pressure inside the pipe ( we actually consider the pressure difference between the inside of the pipe and the ambient pressure in this formula )

In other words all the energy still available at the nozzle is converted into velocity or if you so prefer you have a total pressure fall The system designer shall therefore evaluate all the pressure drop between the pump outlet flange and the nozzle entrance in order to be sure that the nozzle feed pressure is sufficient to assure the desired capacity for the liquid being sprayed

parameters valuesat nozzle outlet

nozzle inlet nozzle oulet or orice

feed pressure

inlet velocity

parameters valuesat the nozzle inlet

(A)potential elevation

energy

(A)velocity ( kinetic ) energy

(A)pressure energy

ambient pressure

exit velocity

LIQU

ID S

PRAY

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33wwwpnr-nozzlescomCTG SH 07 EU

NOZ

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LS

The choice of the right material for a nozzle is sometimes the most important one to do since the nozzle operating life depends upon it There are several factors to influence or shorten the nozzle operating life sometimes more than one at the same time the most important being

Wear from solid particles suspended into the liquid being sprayed1 Chemical corrosion from the liquid being sprayed 2 Chemical corrosion from the ambience outside the nozzle3 Exposure to high temperature 4 Exposure to mechanical shocks5

NOZZLE MATERIALSPnr material codes 34Properties of materials 35Mechanical properties of materials 39Chemical resistance of materials 40

NOZZLE MATERIALS

34 wwwpnr-nozzlescom CTG SH 07 EU

PNR has adopted a short code to identify construction materials for nozzles and nozzle partsHere below the most frequenty used materials

MATERIAL STANDARDS

The following standards are mentioned with reference to materials identification

NOZ

ZLE

MAT

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LS

A1 Free Cutting Steel E1 TEFLONreg (PTFE) L3 NICROFERreg 5923

A2 Carbon Steel E3 DELRINreg (POM) L4 STELLITEreg 6

A8 Zinc Plated Mild Steel E6 PERSPEXreg (PMMA) L5 HASTELLOYreg B2

A9 Nickel Plated Mild Steel E7 VITONreg (FPM) L6 HASTELLOYreg C4

B2 AISI 304 Stainless Steel E8 NBR- Sh 70 Rubber L61 HASTELLOYreg C22

B3 AISI 316 Stainless Steel E81 SANTOPRENEreg Rubber L62 ULTIMETreg

B31 AISI 316L Stainless Steel E82 KLINGERITEreg L7 NICKEL 201

B4 AISI 321 Stainless Steel E83 HYPALONreg L8 HASTELLOYreg C276

B8 AISI 309 Stainless Steel E91 Silicon L9 SANICROreg 28 SS

B81 AISI 310 Stainless Steel F12 Tungsten Carbide (TC) N1 AISI 302 Stainless Steel

C1 AISI 420 St Steel hardened F2 PIREXreg P6 ABS

C4 AISI 317 Stainless Steel F3 Rubin P7 FASIT OIL

C6 SAF 2205 Stainless Steel F4 Zapphire P8 EPDM ShA Rubber

D1 Polyvinylchloride (PVC) F5 Ceramic P9 STIROLUXreg 637

D2 Polypropylene (PP) F6 Silicon Carbide (SC) T1 Brass

D3 Polyamide (PA) G1 Cast Iron T3 Copper

D5 Powder Charged PP H1 Titanium T5 Bronze

D6 Fiberglass Charged PP L1 MONEL 400 T8 Nickel Plated Brass

D7 High Density Polyethylene L2 INCOLOYreg 825 V1 Aluminium

D8 Polyvinylidenefluoride (PVDF) L21 INCONELreg 600 V7 Aluminium ENP

STANDARD ORGANIZATION COUNTRY STANDARD CODE

AFNOR Association Franccedilaise de Normalisation France NF

AISI American Iron and Steel Institute USA AISI

ANSI American National Standards Institute USA ANSI

ASTM American Society for Testing and Materials USA ASTM

BSI British Standards Institution UK BS

DIN Deutsches Institut fuumlr Normung Germany DIN

DSIT Dansk StandardsInformation Technology Denmark DS

ISO International Organization for Standardization International ISO

JIS Japanese Institute for Standard Japan JIS

UNI Ente Nazionale di Unificazione Italy UNI

NOTEThe complete list of the Materials Codes may be requested to our Technical Service mentioning release code TGCE CODMAT

NOZZLE MATERIALS PNR material codes

35wwwpnr-nozzlescomCTG SH 07 EU

NOZ

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MAT

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LS

B1 AISI 303 STAINLESS STEEL

Chemical composition CR 1750 NI 850 S 025 Coding correspondence

Type Stainless Steel Austenitic AISI 303

Hardening Not possible BS 303 S 21

Annealing 1050 1100deg C in water DIN Wnr 14305

Welding Possible with precautions Euro X10CrNiS1809

Corrosion properties

Good resistance Atmospheric exposure food substances organic chemicalsLow resistance Chlorides reducing acids and over 800deg C

JIS SUS 303

NF Z6CN 18-09

SIS 2346

UNI XWCrNiS 1809

B3 AISI 316 STAINLESS STEEL

Chemical composition C 005 CR 170 NI 120 MO 225 Coding correspondence

Type Stainless Steel Austenitic AISI 316

Hardening Not possible BS 316 S 21

Annealing 1050 1100deg C in water DIN Wnr 14401

Welding Easy using same steel electrodes Euro X6CrNiMo17122

Corrosion properties

Good resistance Atmosphere great number of salts organic acids foodsLow resistance Solutions of reducing acids temperatures over 500deg C

JIS SUS 316

NF Z6CND 17-11

SIS 2347

UNI X5CrNiMo1712

B31 AISI 316L STAINLESS STEEL

Chemical composition C 003 CR 170 NI 130 MO 225 Coding correspondence

Type Stainless Steel Austenitic AISI 316 L

Hardening Not possible BS 316S12

Annealing 1050 1100deg C in water DIN Wnr 14404

Welding Easy using same steel electrodes Euro X3CrNiMo1810

Corrosion properties

Good resistance Atmosphere great number of salts organic acids foods salt waterLow resistance Solutions of reducing acids temperatures over 500deg C

JIS SUS 316L

NF Z2CND17-12

SIS 2348

UNI X2CrNiMo 1712

NOZZLE MATERIALS Properties of materials

36 wwwpnr-nozzlescom CTG SH 07 EU

C1 AISI 420 STAINLESS STEEL

Chemical composition C 020 CR 1300 Coding correspondence

Type Stainless Steel Martensitic AISI 420

Hardening 980deg - 1030deg C in oil BS 420 S 29

Annealing 750deg - 800deg C in air DIN Wnr 14021

Welding Possible with precautions Euro X20Cr13

Corrosion properties Good resistance Drinkable water steamgasoline oil alcohol ammonia

JIS SUS 420 J1

NF Z20C13

SIS 2303

UNI X20Cr13

C2 AISI 416 STAINLESS STEEL

Chemical composition C 012 CR 1250 S 022 Coding correspondence

Type Stainless Steel Martensitic AISI 416

Hardening 950deg - 1100deg C in oil BS 416 S 21

Annealing 750deg - 800deg C DIN Wnr ---

Welding Not possible Euro X120CrS13

Corrosion properties Good resistance Drinkable water steamgasoline oil alcohol ammonia

JIS SUS 416

NF Z12CF13

SIS ---

UNI X12CrS13

D8 POLYVINYLIDENE FLUORIDE (PVDF)

Description HIGH-MOLECULAR WEIGHT THE TOUGHEST OF THE FLUOROCARBON RESINS

Trade names amp SuppliersKYNAR (Atochem North America Inc formerly Penwalt Corporation)

SOLEF (Solvay Polymer Corporation)

Physical andMechanical Properties

Excellent resistance to abrasion and stress fatigue

Extremely pure opaque white resin

Thermal Properties UsefuI in temperatures ranging from -73 149degC (-100 300degF)Heat deflection temperature is (8090deg C at 182 Bars (176 194deg F at 264 psi)

Chemical Compatibility

Excellent chemical resistanceCan be used with wet or dry halogens most strong acids and bases aliphatics aromaticsalcohols and strong oxidizing agentsNot recommended for contact with ketones esters amines and some organic acids(fuming sulfuric acid)

NOZZLE MATERIALS Properties of materialsN

OZZL

E M

ATER

IALS

37wwwpnr-nozzlescomCTG SH 07 EU

E1 POLYTETRAFLUOROETHYLENE (PTFE)

Description FLUOROPLASTIC THAT HAVE SOME OR ALL OF THEIR HYDROGEN MOLECULESREPLACED BY FLUORINE

Trade names amp Suppliers

TEFLON TFE FEP and PFA (Dupont Polymer Products)

NEOFLON (Daikin)

FLUON (ICI Americas Inc)

SST-2SST-3 (Shamrock Technologies Inc)

Physical andMechanical Properties

Low coefficient

Low adhesiveness

Buona resistenza agli agenti atmosferici

Good weatherabilityLow resistance to creep and wear unless reinforced with glass figravebers which results in superior resistance

Thermal Properties High and low temperature stabilityHeat deflection temperatures range from 4855deg C at 182 bar (118-132deg F at 264 psi)

Chemical CompatibilityChemically inert

Totally insoluble

E3 ACETAL (ACETAL HOMOPOLYMERS AND COPOLYMERS)

Description HIGHLY CRYSTALLINE RESINS BASED ON FORMALDEHYDE POLYMERIZATION TECHNOLOGY

Trade names amp Suppliers

DELRIN (Dupont Polymer Products Corporation)

CELCON (Hoechst Celanese Corporation)

ULTRAFORM (BASF Corporation)

RTP 800 (RTP Corporation)

LUPITAL amp TENAL (Franklin Polymers Inc)

FULTRON 404 (ICI Americas Inc)

Physical andMechanical Properties

High tensile strength rigidity and esilience

High fatigue endurance

Excellent dimensional stability

Low coefficient of friction

Outstanding abrasion and wear resistance

Excellent creep resistance

Thermal Properties Heat deflection temperatures range from 110 -136deg C at 182 bars(230 - 270deg F at 264 psi) higher if glass figravelled

Chemical Compatibility

Remains stable in long-term high temperature water immersionExcellent resistance to chemicals and solvents but prolonged exposure to strong acids not recommendedNote Suitable for close-tolerance high-performance partsAvailable for machined parts or may be injection molded

NOZZLE MATERIALS Properties of materials

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L6 HASTELLOY C4

PHYSICAL AND MECHANICAL PROPERTIES CHEMICAL COMPOSITION CORROSION RESISTANCE

R = 650800 Mpa C = 0015 max

Very good against pitting and tensile-corrosion specially in oxydizing atmosphereResistance in welded joints definitely better than C 276 lower than C22

Rp02 = 250470 Mpa Ni = 65

HRB = 90 Cr = 160

Mo = 155

W = --

Fe = 3 max

Ti = 05

Co = 2 max

APPLICATIONSRecommended for applications with strongly oxidizing atmosphere

L61 HASTELLOY C 22

PHYSICAL AND MECHANICAL PROPERTIES CHEMICAL COMPOSITION CORROSION RESISTANCE

R = 700800 Mpa C = 001 max

Excellent performances with oxydizing atmospheres as well as for pitting and tensile-corrosion conditionsVery good resistance in reducing atmospheres and for welded joints

Rp02 = 360420 Mpa Ni = 56

HRB = 93 Cr = 22

Mo = 13

W = 3

Fe = 3

Ti = --

Co = 25 max

APPLICATIONSChemical industry (gas ducts gas washing and treatment systems phosphoric acid production) Heat exchangers pumps chlorination reactors

L8 HASTELLOY C 276

PHYSICAL AND MECHANICAL PROPERTIES CHEMICAL COMPOSITION CORROSION RESISTANCE

R = 600800 Mpa C = 0015 max

Very good in reducing and oxydizing atmospheresVery good against pitting and tensile-corrosionAcceptable resistance in welded jointsIn cast parts excessive segregation not eliminated by thermal treatment of annealing makes it convenient to use C22 or C4 qualitieswhich assure better corrosion resistance and mechanical properties

Rp02 = 300370 Mpa Ni = 57

HRB = 90 Cr = 145165

Mo = 1517

W = frac345

Fe =

V = 035 max

Co = 25 max

APPLICATIONSChemical industry (air ducts scrubbers fans) Paper industry Thermoelectric plants Steel thermal treatments

NOZ

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MATERIALTENSILE STRENGHT

CORROSION RESISTANCERp 02 R

20degC 800degC 20degC 800degC

(68degF) (1408degF) (68degC) (1408degC)

AISI 302 280 100 680 200

Good sensitive to corrosionbetween grains for slow heatingand cooling in the 450-900deg Crange temperature

AISI 303 280 100 680 200 Discrete

AISI 304304L 270 90 600 100Good especially for 304L304 sensitive to corrosionbetween grains like AISI 302

AISI 309 250 100 640 220 Good Sensitive to corrosion between grains like AISI 302

AISI 310 310 170 650 270Good (gt 304 - 304L)Sensitive to corrosionbetween grains like AISI 302

AISI 316316L 270 110 560 220 Very high especially for 316L

AISI 321 210 100 540 140 Good

AISI 347 280 120 620 200 Good

AISI 416 620 70 750 90

Good in medium corrosive ambient (atmosphere water gasoline alcohol N1-13 foods)Not in high corrosive

BRASS 110-150 --- 360-410 --- Good especially when nickel plated

BRONZE 100-300 --- 200-600 --- Discrete especially with sea water

CAST IRON le 500 V 100-800 V

NICKEL ALLOYS 100-1000 V 300-1300 VVery high also for high temperature To use in the temperaturerange 800-1200deg C

PLASTICS --- --- 20-200 ---

Good also for erosionGenerally they are attackedwith oxidizers like nitric acidhalogens ect

PTFE --- --- 30-40 ---

Very high except for elementarystate of alkaline metalsand to compounds containingfluorine at high temp

DUPLEX STEEL gtAISI 3 gtAISI 3 gtAISI 3 gtAISI 3 Very high also with high temperatureand also for pitting

TITANIUM alloy 195-850 V 300-900 VVery high in oxidizing ambientVery low in reducing ambient and with compounds containing fluorine

Legend Rp 02 = 02 YIELD STRENGHT [MPa]R = ULTIMATE TENSILE STRENGHT [MPa]V = To verify time by time

NOZZLE MATERIALS Mechanical properties of materials

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PIPINGPipes data 74Economic pipe sizes 75Pressure drop in clean steel pipes 76Flange dimensions 78Sieve size conversion chart 80

PIPING

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The following table report the data of pipes according to ANSI B3619 that is one of the most used standards that regulate welded stainless steel pipes

DN NPS OD[mm]

SCHEDULE

5S 10S 40SSTD 80SXS

t m t m t m t m

[mm] [kgm] [mm] [kgm] [mm] [kgm] [mm] [kgm]

6 18 103 NA NA 124 028 173 037 241 048

8 14 137 NA NA 165 050 224 064 302 081

10 38 172 NA NA 165 064 231 086 320 112

15 12 213 165 081 211 101 277 128 373 164

20 34 267 165 103 211 130 287 171 391 223

25 1 334 165 131 277 212 338 254 455 328

32 1frac14 422 165 167 277 273 356 344 485 453

40 1frac12 483 165 192 277 315 368 411 508 549

50 2 603 165 242 277 399 391 551 554 759

65 2frac12 730 211 374 305 534 516 875 701 116

80 3 889 211 458 305 655 549 115 762 155

90 3frac12 1016 211 525 305 752 574 138 808 189

100 4 1143 211 592 305 849 602 163 856 226

125 5 1413 277 960 340 117 655 221 953 314

150 6 1683 277 115 340 140 711 287 1097 432

200 8 2191 277 150 376 202 818 431 1270 656

250 10 2730 340 229 419 282 927 611 1270 827

300 12 3239 396 317 457 365 953 749 1270 988

350 14 3556 396 348 478 419 NA NA NA NA

400 16 4064 419 421 478 480 NA NA NA NA

450 18 457 419 474 478 541 NA NA NA NA

500 20 508 478 602 554 696 NA NA NA NA

550 22 559 478 662 554 767 NA NA NA NA

600 24 610 554 837 635 959 NA NA NA NA

Where

DN = Nominal diameter NPD = Nominal Pipe Size OD = Outside Diameter t = Wall Thickness m = Specific WeightPIPI

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PIPING Pipes data

75wwwpnr-nozzlescomCTG SH 07 EU

The following Specific Pressure Drops (Y) are normally used in the good engineering practice(where Y=ΔPL ΔP Pressur Drop and L Pipe Lenght)

For pipe sizing the Velocity (V) is also usedIn the following table are shown the typical liquid velocities in steel pipes

Some fixed pressure drop values indicationsfor gate valves (fully open) consider a pressure drop of 5 metersbullfor normal bends consider a pressure drop of 5 metersbullfor a check valve consider a pressure drop of 15 metersbull

In the succeeding tables we show the velocity and specific pressure drop for several flow rates and pipe diameters

Not boiling waterY = 02divide05 bar100 m for pump discharge (07 bar100 m max if P gt 50 bar)

Y lt 0110 bar100 m for pump suction

Boiling water Y = 004divide005 bar100 m for pump suction (velocity = 03divide09 ms)

LIQUID LINE TYPE

Specific Pressure Dropsvs Velocity [ms]

0 lt V lt 2 3 lt V lt 10 10 lt V lt 20

NOT BOILING WATER

Pump suctionPump discharge (long)Discharge leads (short)Boiler feedDrainsSloped sewer

03 divide 0606 divide 0912 divide 2712 divide 2709 divide 12

-

06 divide 1209 divide 1515 divide 3715 divide 3709 divide 1509 divide 15

09 divide 1812 divide 2124 divide 4224 divide 42

-12 divide 21

HYDROCARBON LIQUIDS(normal viscosity)

Pump suctionDischarge heather (long)Discharge leads (short)Drains

05 divide 0808 divide 1112 divide 2709 divide 12

06 divide 1209 divide 1515 divide 3709 divide 15

09 divide 1812 divide 2124 divide 46

-

MEDIUM VISCOSITY OILPump suctionDischarge (short)Drains

--

03

05 divide 0901 divide 0209 divide 15

08 divide 1501 divide 0312 divide 18

OTHER WATERCooling tower Chilled waterSea water and generally foulingwater (long pipes) ()

06 divide 09 09 divide 15 12 divide 21

Note () In this case Cameron method has to be used with C=1 Y = 005 divide 012 bar100 m for principal manifold Y = 012 divide 023 bar100 m for secondary manifold

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PIPING Economic pipe sizes

76 wwwpnr-nozzlescom CTG SH 07 EU

18rdquo 14rdquo

1 0350 0370 0200 0090 38rdquo 12rdquo

2 0705 1340 0395 0331 0223 0082 0145 0029 34rdquo

3 1060 2890 0593 0673 0333 0176 0217 0061 0125 0016 1rdquo

4 1410 4940 0788 1150 0444 0291 0290 0101 0167 0027 0110 0010

5 1760 7460 0985 1750 0556 0424 0362 0149 0209 0040 0137 0014

6 1180 2460 0667 0594 0434 0207 0251 0054 0165 0019 114rdquo

8 1580 4060 0892 1020 0579 0351 0335 0091 0219 0033 0126 0009 112rdquo

10 1110 1530 0724 0534 0418 0136 0274 0049 0158 0012 0116 0006

15 1670 3250 1090 1130 0627 0284 0411 0099 0236 0026 0174 0012

20 2rdquo 2230 5600 1450 1900 0836 0481 0549 0168 0315 0043 0233 0021

30 0212 0013 212rdquo 2170 4130 1250 1020 0823 0353 0473 0092 0348 0043

40 0283 0022 0190 0007 2900 7180 1670 1760 1100 0606 0631 0155 0465 0073

50 0354 0032 0237 0012 2090 2700 1370 0911 0789 0233 0581 0108

60 0424 0044 0284 0017 2510 3810 1650 1290 0943 0321 0697 0150

70 0495 0079 0332 0022 3rdquo 2930 5120 1920 1720 111 0434 0814 0199

80 0566 0074 0379 0028 0248 0010 312rdquo 2190 2210 126 0554 0925 0253

90 0636 0093 0427 0035 0279 0013 0209 0006 2470 2770 142 0692 1040 0319

100 0707 0114 0474 0043 0310 0015 0232 0007 4rdquo 2740 3400 158 0843 1160 0392

150 1060 0238 0711 0090 0464 0031 0349 0016 0272 0008 4110 7440 236 181 1740 0828

200 1410 0414 0948 0153 0619 0053 0466 0027 0362 0014 315 314 2330 1450

250 1760 0625 1190 0233 0774 0080 0581 0040 0453 0021 5rdquo 2900 2200

300 2120 0889 1420 0324 0930 0112 0698 0055 0543 0030 0352 0011 3480 3070

350 2470 1190 1660 0438 1080 0150 0815 0074 0634 0040 0411 0014 6rdquo 4070 4160

400 2830 1550 1900 0563 1240 0195 0935 0096 0724 0051 0469 0018 0341 0007 4650 5380

450 3180 1930 2130 0707 1390 0242 1050 0120 0815 0063 0528 0022 0366 0009 5230 6790

500 3540 2380 2370 0867 1550 0298 1170 0147 0902 0076 0587 0027 0407 0011

550 3880 2870 2610 1040 1700 0354 1280 0174 0991 0092 0645 0032 0447 0013

600 4240 3390 2840 1220 1860 0418 1400 0204 1090 0110 0704 0037 0488 0015

650 4590 5560 3080 1420 2010 0486 1510 0239 1180 0127 0762 0043 0529 0017

700 4950 4550 3320 1650 2170 0560 1630 0275 1270 0146 0821 0050 0569 0020

750 5300 5200 3560 1880 2320 0637 1750 0314 1360 0164 0879 0057 0610 0023

800 3790 2130 2480 0721 1860 0354 1450 0185 0936 0064 0651 0025 8rdquo

850 4030 2390 2630 0805 1980 0395 1540 0209 1000 0072 0692 0028 0403 0007

900 2790 0901 2090 0438 1630 0232 1050 0008 0732 0032 0427 0008

950 2940 1000 2210 0486 1720 0258 1120 0087 0773 0036 0451 0010

1000 3100 1110 2320 0534 1810 0284 1170 0096 0814 0039 0474 0011

1100 3410 1290 2560 0643 1990 0341 1290 0116 0895 0047 0522 0012

1200 3720 1 580 2800 0763 2170 0403 1410 0135 0974 0055 0569 0015

1300 3030 0890 2360 0473 1530 0157 1060 0063 0616 0017

1400 3260 1020 2540 0544 1640 0183 1140 0072 0664 0019

1500 3490 1170 2720 0617 176 0208 1220 0083 0712 0022

1600 3720 1330 2890 0697 1880 0234 1300 0093 0758 0025

1700 10rdquo 3950 1490 3080 0784 1990 0260 1380 0104 0806 0028

1800 0546 0010 3260 0875 2110 0290 1470 0116 0854 0032

1900 0575 0012 3440 0965 2230 0323 1550 0129 0901 0034

2000 0606 0012 3617 1060 2340 0356 1630 0143 0946 0037

2200 0667 0015 3980 1280 2580 0429 1790 0172 1050 0045

2400 0727 0017 12rdquo 2820 0507 1950 0200 1140 0053

2600 0788 0021 0563 0009 3050 0589 2110 0234 1230 0061

2800 0848 0023 0606 0010 14rdquo 3280 0676 2280 0268 1330 0070

3000 0909 0026 0649 0011 0532 0007 3520 0773 2440 0306 1420 0080

3500 1060 0035 0760 0015 0620 0009 4110 105 2850 0416 1660 0108

4000 1210 0045 0866 0020 0709 0012 16rdquo 4690 135 3250 0532 1900 0139

4500 1360 0056 0976 0025 0798 0015 0606 0007 3660 0674 2130 0173

5000 1520 0069 1080 0029 0886 0018 0674 0009 4070 0822 2370 0212

6000 1810 0097 1290 0042 1070 0026 0808 0013 18rdquo 4880 1160 2850 0301

7000 2120 0130 1510 0055 1240 0035 0940 0017 0741 0010 5690 1580 3310 0403

8000 2420 0168 1730 0072 1420 0045 1080 0022 0847 0012 6510 2050 3790 0525

9000 2730 0210 1950 0091 1600 0056 1210 0027 0954 0015 4270 0659

10000 3030 0257 2170 0111 1770 0067 1350 0033 1050 0019 4740 0801

Legend Q Water Flow Rate (Lpm) V Velocity (ms) Y Specific Pressure Drops (bar100m)Water at ambient temperature in straight pipe

SPECIfIC PRESSURE DROPS fOR WATER fLOW IN CLEAN STEEL PIPE SCH 10S

Q V Y V Y V Y V Y V Y V Y V Y V Y [lm] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m]

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NG

77wwwpnr-nozzlescomCTG SH 07 EU

SPECIfIC PRESSURE DROPS fOR WATER fLOW IN CLEAN STEEL PIPE SCH 40S

Legend Q Water Flow Rate (Lpm) V Velocity (ms) Y Specific Pressure Drops (bar100m)Water at ambient temperature in straight pipe

18rdquo 14rdquo

1 0458 0726 0251 0170 38rdquo 12rdquo

2 0918 2590 0501 0600 0272 0136 0170 0044 34rdquo

3 1380 5590 0752 1220 0407 029 0255 0091 0144 0023 1rdquo

4 1840 9570 1000 2090 0543 048 0340 0151 0192 0038 0120 0012

5 2290 14450 1250 3180 0679 070 0425 0223 0241 0057 0150 0017

6 1500 4460 0815 0980 0510 0309 0289 0077 0180 0024 114rdquo

8 2010 7360 1090 1690 0680 0524 0385 0129 0240 0041 0138 0011 112rdquo

10 1360 2520 0850 0798 0481 0193 0300 0061 0172 0015 0127 0008

15 2040 5370 1280 1690 0722 0403 0450 0124 0258 0032 019 0015

20 2rdquo 2720 9240 1700 2840 0962 0683 0600 0210 0344 0054 0254 0026

30 0231 0016 212rdquo 2550 6170 1440 1450 0900 0442 0517 0114 038 0053

40 0308 0027 0216 0010 3400 10720 1920 2500 1200 0758 0689 0193 0507 0091

50 0385 0039 0270 0017 2410 3830 1500 1140 0861 029 0634 0135

60 0462 0055 0324 0023 2890 5410 1800 1610 103 0400 0761 0187

70 0539 0098 0378 0031 3rdquo 3370 7270 2100 2150 1210 0541 0888 0248

80 0616 0092 0432 0039 028 0014 312rdquo 2400 2760 1380 0690 1010 0315

90 0693 0115 0486 0048 0315 0017 0235 0008 2700 3470 1550 0862 1140 0397

100 0770 0141 0540 0059 035 002 0261 0010 4rdquo 3000 4250 1720 1050 1270 0488

150 1150 0295 0810 0125 0524 0042 0392 0021 0304 0011 4500 9300 2580 2260 1900 1030

200 1540 0512 1080 0212 0699 0072 0523 0036 0405 0019 3440 3910 2540 1810

250 1920 0773 1350 0322 0874 0108 0653 0053 0507 0028 5rdquo 3170 2740

300 2310 1100 1620 0449 105 0152 0784 0074 0608 004 0387 0014 3800 3820

350 2690 1470 1890 0606 122 0203 0915 0099 0710 0053 0452 0018 6rdquo 4440 5180

400 3080 1920 2160 0780 14 0264 1050 0128 0811 0068 0516 0023 0375 0009 5070 6690

450 3460 2390 2430 0979 157 0328 1180 0161 0912 0084 0581 0028 0402 0012 5710 8450

500 3850 2950 2700 1200 175 0403 1310 0196 1010 0101 0646 0034 0447 0014

550 4230 3550 2970 1440 192 0479 1440 0232 1110 0122 0710 0041 0491 0016

600 4620 4200 3240 1690 2100 0566 1570 0273 1220 0146 0775 0047 0536 0019

650 5000 6880 3510 1970 2270 0658 1700 0319 1320 0169 0839 0055 0581 0022

700 5390 5630 3780 2280 2450 0759 1830 0368 1420 0194 0904 0063 0625 0025

750 577 6440 4050 2600 2620 0863 1960 042 1520 0218 0968 0072 067 0029

800 4320 2950 2800 0977 2090 0473 1620 0246 1030 0081 0715 0032 8rdquo

850 4590 3310 2970 1090 2220 0528 1720 0277 1100 0091 076 0036 0439 0009

900 3150 1220 2350 0585 1820 0308 1160 0100 0804 0041 0465 001

950 3320 1350 248 0649 1930 0342 1230 0111 0849 0045 0491 0012

1000 3500 1500 261 0714 2030 0377 1290 0122 0894 0049 0516 0013

1100 3850 1750 2870 0860 2230 0452 1420 0147 0983 0059 0568 0015

1200 4200 2140 3140 1020 2430 0534 1550 0172 1070 0069 0620 0018

1300 3400 1190 2640 0627 1680 0200 1160 008 0671 0021

1400 3660 1370 2840 0722 1810 0232 1250 0091 0723 0024

1500 3920 1560 3040 0818 1940 0264 1340 0105 0775 0027

1600 4180 1780 3240 0924 2070 0297 1430 0118 0826 0031

1700 10rdquo 4440 1990 3450 1040 2190 0331 1520 0132 0878 0035

1800 0590 0012 3650 1160 2320 0369 1610 0147 0930 0039

1900 0622 0014 3850 1280 2450 041 1700 0163 0981 0042

2000 0655 0015 40500 1410 2580 0452 1790 0181 1030 0046

2200 0721 0018 4460 1700 2840 0545 1970 0217 1140 0056

2400 0786 0021 12rdquo 3100 0645 2140 0253 1240 0065

2600 0852 0025 0600 001 3360 0749 2320 0296 1340 0076

2800 0917 0028 0646 0012 14rdquo 3610 0859 2500 0339 1450 0087

3000 0983 0032 0692 0013 0573 0008 3870 0982 268 0387 1550 0099

3500 1150 0043 0810 0018 0668 0011 4520 1330 3130 0526 1810 0134

4000 1310 0055 0923 0023 0764 0014 16rdquo 5160 1720 3570 0673 2070 0172

4500 1470 0068 1040 0029 0860 0018 0658 0009 4020 0853 2320 0214

5000 1640 0084 1150 0034 0955 0022 0731 0011 4470 1040 2580 0262

6000 1960 0118 1380 0049 1150 0031 0877 0016 18rdquo 5360 1470 3100 0373

7000 2290 0158 1610 0065 1340 0042 1020 0021 0808 0012 6250 2000 3610 0499

8000 2620 0204 1840 0085 1530 0054 1170 0027 0924 0015 7150 2590 4130 065

9000 2950 0256 2080 0107 1720 0067 1310 0033 1040 0019 4650 0816

10000 3280 0313 2310 0130 1910 0081 1460 0041 1150 0023 5160 0992

Q V Y V P V Y V Y V Y V Y V Y V Y [lm] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m]

PIPI

NG

78 wwwpnr-nozzlescom CTG SH 07 EU

10 75 12 038 4 11 50

15 80 12 044 4 11 55

20 90 14 065 4 11 65

25 100 14 082 4 11 75

32 120 14 117 4 14 90

40 130 14 139 4 14 100

50 140 14 162 4 14 110

65 160 14 214 4 14 130

80 190 16 343 4 18 150

100 210 16 422 4 18 170

125 240 18 611 8 18 200

150 265 18 751 8 18 225

175 295 20 1020 8 18 255

200 320 20 1230 8 18 280

250 375 22 1850 12 18 335

300 440 22 2550 12 22 395

350 490 22 3180 12 22 445

400 540 22 3850 16 22 495

450 595 22 4700 16 22 550

500 645 24 6040 20 22 600

PN 6 (UNI 6091)

ND 6 (DIN 2527) DN Flange Holes

D t W N Oslash a

90 14 063 4 14 60

95 14 071 4 14 65

105 16 101 4 14 75

115 16 122 4 14 85

140 16 180 4 18 100

150 16 209 4 18 110

165 18 287 4 18 125

185 18 365 4 18 145

200 20 461 8 18 160

220 20 565 8 18 180

250 22 812 8 18 210

285 22 1050 8 22 240

315 24 1410 8 22 270

340 24 1620 12 22 295

405 28 2510 12 25 355

460 28 3520 12 25 410

520 30 4820 16 25 470

580 32 6350 16 30 525

640 32 7720 20 30 585

715 34 1020 20 33 650

PN 16 (UNI 6093)

ND 16 (DIN 2527) Dimensions Holes

D t W N Oslash a

ND 10 (DIN 2527) Dimensions Holes

D t W N Oslash a

90 14 063 4 14 60

95 14 071 4 14 65

105 16 101 4 14 75

115 16 122 4 14 85

140 16 180 4 18 100

150 16 209 4 18 110

165 18 287 4 18 125

185 18 365 4 18 145

200 20 461 4 18 160

220 20 565 8 18 180

250 22 812 8 18 210

285 22 1050 8 22 240

315 24 1410 8 22 270

340 24 1650 8 22 295

395 26 2410 12 22 350

445 26 3080 12 22 400

505 26 3960 16 22 460

565 26 4960 16 25 515

615 26 5860 20 25 565

670 28 7530 20 25 620

PN 10 (UNI 6092)

LegendaDN Nominal DiameterD Flange External Diametert Flange ThicknessW Flange WeightN Hole NumberOslash Hole Diametera Hole axis

PIPING Flange dimensionsPI

PIN

G

Blind flanges to DIN 2527

79wwwpnr-nozzlescomCTG SH 07 EU

LegendDN Nominal DiameterD Flange External Diametert Flange ThicknessW Flange WeightN Hole NumberOslash Hole Diametera Hole axis

12rsquorsquo 889 111 08 4 159 603

34rsquorsquo 984 127 09 6 159 698

1rsquorsquo 1079 143 10 4 159 794

114rsquorsquo 1175 159 13 4 159 889

112rsquorsquo 1270 175 14 4 159 984

2rsquorsquo 1524 190 18 4 190 1206

212rsquorsquo 1778 222 32 4 190 1397

3rsquorsquo 1905 238 41 4 190 1524

312rsquorsquo 2159 238 59 8 190 1778

4rsquorsquo 2286 238 77 8 190 1905

5rsquorsquo 2540 238 91 8 222 2159

6rsquorsquo 2794 254 118 8 222 2413

8rsquorsquo 3429 286 204 8 222 2984

10rsquorsquo 4064 302 318 12 254 3619

12rsquorsquo 4826 317 500 12 254 4318

14rsquorsquo 5334 349 600 12 286 4762

16rsquorsquo 5969 365 770 16 286 5397

18rsquorsquo 6350 397 950 16 317 5778

20rsquorsquo 6985 429 1230 20 317 6350

22rsquorsquo 7493 460 1510 20 349 6921

ANSI 150 lb DN Flange Holes

D t W N Oslash a

952 143 10 4 159 667

1175 159 14 4 190 825

1238 175 18 4 190 889

1333 206 27 4 190 984

1556 222 36 4 222 1143

1651 254 45 8 190 1270

190S 286 68 8 222 1492

209S 317 91 8 222 1683

2286 349 132 8 254 1841

2540 349 150 8 254 2000

2794 381 200 8 254 2349

3175 413 277 12 254 2699

3810 476 450 12 286 3302

4445 540 700 16 317 3873

5207 571 103 16 349 4508

5842 603 141 20 349 5143

6477 635 181 20 381 5715

7112 667 228 24 381 6286

7747 698 282 24 413 6858

8382 730 311 24 444 7429

ANSI 400 lb Dimensions Holes

D t W N Oslash a

ANSI 300 lb Dimensions Holes

D t W N Oslash a

952 143 10 4 159 667

1175 159 14 4 190 825

1238 175 18 4 190 889

1333 190 27 4 190 984

1556 206 32 4 220 1143

1651 222 36 8 190 1270

1905 254 54 8 222 1492

2095 286 73 8 222 1683

2286 302 95 8 222 1841

2540 317 122 8 222 2000

2794 349 159 8 222 2349

3175 365 227 12 222 2699

3810 413 370 12 254 3302

4445 476 580 16 286 3873

5207 508 840 16 317 4508

5842 540 1070 20 317 5143

6477 571 1390 20 349 5715

7112 603 3900 24 349 6286

7747 635 2230 24 349 6858

8382 667 2700 24 413 7429

PIPING Flange dimensions

PIPI

NG

flanges to ANSI norms

80 wwwpnr-nozzlescom CTG SH 07 EU

PIPI

NG

Sieves are used both for determining the particle size distribution of a granular material and to filter solid particles in a liquid Normally the sieve is made with a fabric whose characteristic dimensions areL is the Opening Width (free passage)D is the Diameter of the wireP is the Pitch of the wireS is the Thickness of the fabricTo classify particle sizes there is some Sieve Series according to specific standardsthe most known are Tyler Sieve Series US Sieve Series UK Sieve SerieshellipThe Tyler mesh size indicates exactly the number of openings per linear inch of mesh

L[microm]

TYLER Sieve[Mesh No]

ASTM E11 Sieve[Mesh No]

BS 410 Sieve[Mesh No]

DIN 4188 Sieve[mm]

5 2500 2500 0005

10 1250 1250 0010

15 800 800 0015

20 625 635 625 0020

22 0022

25 500 500 500 0025

28 0028

32 na 450 440 0032

36 0036

38 400 400 400

40 0040

45 325 325 350 0045

50 0050

53 270 270 300

56 0056

63 250 230 240 0063

71 0071

75 200 200 200

80 0080

90 170 170 170 0090

100 0100

106 150 140 150

112 0112

125 115 120 120 0125

140 0140

150 100 100 100

160 0160

180 80 80 85 0180

200 0200

In the german standard (DIN norm 4188) the Opening Width (L) is given in millimeters

PIPING Sieve size conversion chartPI

PIN

G

81wwwpnr-nozzlescomCTG SH 07 EU

L[microm]

TYLER Sieve[Mesh No]

ASTM E11 Sieve[Mesh No]

BS 410 Sieve[Mesh No]

DIN 4188 Sieve[mm]

212 65 70 72

250 60 60 60 0250

280 0280

300 48 50 52

315 0315

355 42 45 44 0355

400 0400

425 35 40 36

450 0450

500 32 35 30 0500

560 0560

600 28 30 25

630 0630

710 24 25 22 0710

800 0800

850 20 20 18

900 0900

1000 16 18 16 1000

1120 1120

1180 14 16 14

1250 1250

1400 12 14 12 1400

1600 1600

1700 10 12 10

1800 1800

2000 9 10 8 2000

2240 2240

2360 8 8 7

2500 2500

2800 7 7 6 2800

3150 3150

3350 6 6 5

3550 3550

4000 5 5 4 4000

4500 4500

4750 4 4 35

5000 5000

5600 35 35 3

6700 3 0265 in 1

8000 25 516 in na

Applicable standards areISO 565 (1987) ISO 3310 (1999) ASTM E 11-70 (1995)DIN 4188 (1977) BS 410 (1986) AFNOR NFX11-501 (1987)

Legend Q Water Flow Rate V Velocity P Pressure drop Pressure drop in bar per 100 meters of straight pipe (water at ambient temperature)

PIPING Sieve size conversion chart

PIPI

NG

Besides its main range of nozzles for industrial applications PNR manufactures a wide range of complementary products and systems to optimize the use of spray jets and fluids control in most of the modern industrial processes

PNR PRODUCT RANGE

CTG AC

CTG LS

CTG UG

CTG AZ

Complementary Products andAssembly FittingsA complete line of nipples clamps swivel joints and everything that helps you to assemble align and service your spraying systems quickly and easilyAir blowers mixing eductors filters clean-ing guns and lances hose reels steam heaters pressure tanks quick couplings to help you build up a professional system upgraded to the latest standards

Tank washing systemsA complete range from simple fixed washing heads to the two-axis heads from mushroom nozzles to fluid driven reaction heads up to the motor driven washing heads equipped with a pneu-matic or electric motorAll for the inside cleaning of industrial tanks according to the latest technology accessories included

Spray nozzles for industrial applicationsOne of the world most complete lines of nozzles for numberless industrial appli-cations Nozzles with a wide openings range various types of vanes several spray patterns anti-clog design available in small and big dimensions and made in many food-grade materials like PFTE and Stainless Steel 316L with threaded and flanged connections

Air assisted atomizersUltrasonic classic and automatic atomiz-ers for the finest atomization in any insus-trial process High quality machining and strict quality control ensure your systems top professional resultsProgramming and control panels for an easy assembly of complete humidification systems

CTG SP

CTG PM

CTG SW

CTG LN

Spraydry nozzlesAir assisted or hydraulic high pressure ato-mizers made in high-quality metal alloys or tungsten carbideA complete line of nozzles for the moder-nization of existing facilities at competitive prices To ensure highly accurate results and a long service life these nozzles are manufactured with the finest materials and technologically advanced machines

Paper mill productsA line of products specifically designed for perfect results on paper mill machines including disc nozzles patented for self-cleaning filters flat jet nozzles with orifices in sapphire ruby and ceramic oscillating tubes equipped with a computer driven motor

Steelwork nozzlesA complete line of nozzles for steelwork applications including continuous casting air atomizers and conventional nozzles descaling nozzles for high pressure sys-tems dovetail tips for cylinders cooling and high capacity flanged nozzles for coke quenching

Gas cooling lancesSpillback or air assited lances for gas coo-ling in steelworks cement plants and other industrial applicationsWe can supply spare parts upgrade your plant and even supply a complete PLC driven system to enhance the towers per-formances to the highest efficiency level allowed by today technology

wwwpnr-nozzlescomCTG SH 07 EU

CTG SH 07 EUwwwpnr-nozzlescom

STAM

PATO

IN E

U 09

09

copy B

ellamp

Tany

Our products are distributed through

We are also represented in

PNR AmericaPNR Asia

PNR BalticPNR Benelux

PNR ChinaPNR Czech Republic

PNR DeutschlandPNR France

PNR ItaliaPNR Mexico

PNR UK

ArgentinaAustraliaAustriaBrazil

BulgariaCanada

ChileCroatia

DenmarkFinlandGreece

IndiaIndonesia

IranIrelandKorea

MalaysiaNorway

New ZealandPakistan

PhilippinesPoland

Portugal

RumeniaRussiaSerbia

SingaporeSlovenja

SpainSouth Africa

SwedenTaiwanTurkey

Venezuela

Page 6: SPRAY CTG SH 07 EU ENGINEERING HANDBOOK

6 wwwpnr-nozzlescom CTG SH 07 EU

There are 4 principal types of temperature scales used for indicate the temperature CENTIGRADE CELSIUS FAHRENHEIT KELVIN and RANKINE Kelvin and Celsius scales are used in Europe Rankine Fahrenheit are used in Anglo-Saxons countries

MP = water melting pointBP = water boiling point

GENE

RAL

INFO

RMAT

ION SYMBOL NAME MP BP NOTES

degC Centigrade 0 100 0 and 100 are arbitrarily placed at the freezing point andboiling point of water

degF Fahrenheit 32 212

0degF is the stabilized temperature when equal amounts ofice water and salt are mixed 96degF is the temperatureldquowhen the thermometer is held in the mouth or under thearmpit of a living man in good healthrdquo

degK Kelvin 27316 37316Based upon the definitions of the Centigrade scale and theexperimental evidence that absolute zero is ndash27316deg Cand that is an international standard temperature point

degR Rankine 49167 67167 Based upon the definitions of the Fahrenheit scale andthe experimental evidence that absolute zero is ndash27316deg C

degC degF43 1094

44 1112

45 113

46 1148

47 1166

48 1184

49 1202

50 122

51 1238

52 1256

53 1274

54 1292

55 131

56 1328

57 1346

58 1364

59 1382

60 140

61 1418

62 1436

63 1454

64 1472

65 149

66 1508

degC degF67 1526

68 1544

69 1562

70 158

71 1598

72 1616

73 1634

74 1652

75 167

76 1688

77 1706

78 1724

79 1742

80 176

81 1778

82 1796

83 1814

84 1832

85 185

86 1868

87 1886

88 1904

89 1922

90 194

degC degF91 1958

92 1976

93 1994

94 2012

95 203

96 2048

97 2066

98 2084

99 2102

100 212

105 221

110 230

115 239

120 248

125 257

130 266

135 275

140 284

145 293

150 302

160 320

170 338

180 356

190 374

degC degF19 662

20 68

21 698

22 716

23 734

24 752

25 77

26 788

27 806

28 824

29 842

30 86

31 878

32 896

33 914

34 932

35 95

36 968

37 986

38 1004

39 1022

40 104

41 1058

42 1076

degC degF-10 14

-8 176

-6 212

-4 248

-2 284

0 32

1 338

2 356

3 374

4 392

5 41

6 428

7 446

8 464

9 482

10 50

11 518

12 536

13 554

14 572

15 59

16 608

17 626

18 644

CONVERSION FORMULAE TABLE

CELSIUS FAHRENHEIT KELVIN RANKINE

degC= -

degF - 32 K - 27316

R - 27316

18 18

degF= 18 degC + 32 18K - 45969 R - 45969

K= degC + 27316

degF - 32 + 27316

- R

18 18

degR= 18 (degC + 27316) degF + 45967 18K -

GENERAL INFORMATION Conversion table temperature scales

7wwwpnr-nozzlescomCTG SH 07 EU

GENE

RAL

INFO

RMAT

ION

GENERAL INFORMATION Metric and decimal equivalents of fractions of an inch

5wwwpnr-nozzlescom

METRIC AND DECIMAL EQUIVALENTS OF FRACTIONS OF ONE INCH

mm FRACTIONS OF ONE INCH INCHES

03969 164 0015625079375 132 00312511906 364 00468715875 116 00625 19844 564 0078125238125 332 009375 27781 764 0109375 31750 18 012535719 964 014062396875 532 01562543656 1164 017187547625 316 1364 0187551594 0203125555625 732 02187559531 1564 023437563500 14 02567469 1764 0265625 714375 932 02812575406 1964 029687 79375 516 0312583344 2164 0328125873125 1132 03437591281 2364 035937595250 38 037599219 2564 0390625

1031875 1332 040625107156 2764 042187111125 716 04375115094 2964 04531251190625 1532 046875123031 3164 0484375127000 12 05130969 3364 05156251349375 1732 053125138906 3564 054687142875 916 05625146844 3764 05781251508125 1932 059375154781 3964 0609375 158750 58 0625 162719 4164 064062 1666875 2132 065625 170656 4364 0671875 174625 1116 06875 178594 4564 0703125 1825625 2332 071875 186531 4764 0734375 190500 34 075194469 4964 07656251984375 2532 078125202406 5164 0796875206375 1316 08125210344 5364 08281252143125 2732 084375218280 5564 085937222250 78 0875226219 5764 08906252301875 2932 090625 234156 5964 0921875238125 1516 09375242094 6164 09531252460625 3132 096875250031 6364 0984375254000 1 10

INT

RO

DU

CT

ION

5wwwpnr-nozzlescom

METRIC AND DECIMAL EQUIVALENTS OF FRACTIONS OF ONE INCH

mm FRACTIONS OF ONE INCH INCHES

03969 164 0015625079375 132 00312511906 364 00468715875 116 00625 19844 564 0078125238125 332 009375 27781 764 0109375 31750 18 012535719 964 014062396875 532 01562543656 1164 017187547625 316 1364 0187551594 0203125555625 732 02187559531 1564 023437563500 14 02567469 1764 0265625 714375 932 02812575406 1964 029687 79375 516 0312583344 2164 0328125873125 1132 03437591281 2364 035937595250 38 037599219 2564 0390625

1031875 1332 040625107156 2764 042187111125 716 04375115094 2964 04531251190625 1532 046875123031 3164 0484375127000 12 05130969 3364 05156251349375 1732 053125138906 3564 054687142875 916 05625146844 3764 05781251508125 1932 059375154781 3964 0609375 158750 58 0625 162719 4164 064062 1666875 2132 065625 170656 4364 0671875 174625 1116 06875 178594 4564 0703125 1825625 2332 071875 186531 4764 0734375 190500 34 075194469 4964 07656251984375 2532 078125202406 5164 0796875206375 1316 08125210344 5364 08281252143125 2732 084375218280 5564 085937222250 78 0875226219 5764 08906252301875 2932 090625 234156 5964 0921875238125 1516 09375242094 6164 09531252460625 3132 096875250031 6364 0984375254000 1 10

INT

RO

DU

CT

ION

5wwwpnr-nozzlescom

METRIC AND DECIMAL EQUIVALENTS OF FRACTIONS OF ONE INCH

mm FRACTIONS OF ONE INCH INCHES

03969 164 0015625079375 132 00312511906 364 00468715875 116 00625 19844 564 0078125238125 332 009375 27781 764 0109375 31750 18 012535719 964 014062396875 532 01562543656 1164 017187547625 316 1364 0187551594 0203125555625 732 02187559531 1564 023437563500 14 02567469 1764 0265625 714375 932 02812575406 1964 029687 79375 516 0312583344 2164 0328125873125 1132 03437591281 2364 035937595250 38 037599219 2564 0390625

1031875 1332 040625107156 2764 042187111125 716 04375115094 2964 04531251190625 1532 046875123031 3164 0484375127000 12 05130969 3364 05156251349375 1732 053125138906 3564 054687142875 916 05625146844 3764 05781251508125 1932 059375154781 3964 0609375 158750 58 0625 162719 4164 064062 1666875 2132 065625 170656 4364 0671875 174625 1116 06875 178594 4564 0703125 1825625 2332 071875 186531 4764 0734375 190500 34 075194469 4964 07656251984375 2532 078125202406 5164 0796875206375 1316 08125210344 5364 08281252143125 2732 084375218280 5564 085937222250 78 0875226219 5764 08906252301875 2932 090625 234156 5964 0921875238125 1516 09375242094 6164 09531252460625 3132 096875250031 6364 0984375254000 1 10

INT

RO

DU

CT

ION

mm FRACTIONS OF ONE INCH INCHES

8 wwwpnr-nozzlescom CTG SH 07 EU

LIQUID SPRAY AND SPRAY NOZZLESLiquid spray 9Spray nozzle types 11Spray nozzle coding 13Computerized fluid dynamics 14Spray generation 15Droplet spectrum 16Nozzle flow rate 19Spray angle 21Spray distribution 23Influence of liquid viscosity 27Influence of liquid specific gravity 29Jet impact 30Pressure drop through a nozzle 32

LIQUID SPRAY AND SPRAY NOZZLESLI

QUID

SPR

AYAN

D SP

RAY

NOZZ

LES

A nozzle is a device which converts the energy from a fluid into velocity of the spray dropletsApplications in many industrial processes are numberless with spray nozzles being very often a critical component in determining the final quality of the product or the efficiency of the processFor this reason the available nozzle range types for industrial applications can be found in PNR nozzle catalogue as well as a concise but complete information about the most important parameters which can give a technical definition of a spray and its qualityWe have grouped in the following the most useful formulas for designing a spray system showing the influence of the different factors which can affect the process of sprayingMore information about the working life of a nozzle and the best suited material for a given purpose can be found at page 17 of this publication AlI the following data when not otherwise specified refer to spraying water at 15deg C

9wwwpnr-nozzlescomCTG SH 07 EU

LIQUID SPRAY AND SPRAY NOZZLES Liquid spray

LIQU

ID S

PRAY

AND

SPRA

Y NO

ZZLE

S

LIQUID SPRAY AS A PROCESS

The process of spraying a liquid can be described as composed of two phases namely

1 Breaking up the liquid into separated drops2 Directing the liquid drops onto a surface or an object to achieve the desired result

The above two phases are normally performed by the types of nozzles being used in industrial processes at the same time by means of different techniques which shall be illustrated in the followingThe continuous progress in the manufacturing techniques in recent years has requested the nozzle manufacturer to make available to the industry an always more complete range of spray nozzle types to perform the different processes in a more efficient wayIt is the interest of the engineer using spray nozzles in manufacturing processes to become familiar with the different types of nozzles which are available today and with their individual characteristics in order to be able to choose the nozzle which performs with the highest possible efficiency on a given application

Spraying a liquid through a spray nozzle can serve different purposes among which the most important are the following

1 Cooling by means of heat transfer between the product itself and the liquid running on its surface2 Washing where the water directed onto the product takes away dirt or undesired substances from the product surface3 Humidifying with sprays carrying very little liquid quantities to the product surfaceinto a chamber or into a room4 Metering the desired liquid quantity in a unit of time into the product being handled5 Applying a product on a surface as in the case of spray painting or surface pre-treatment before painting6 Increasing the liquid surface to speed up heat transfer processes or chemical reactions and many others in numerous applications throughout modern industry

It is self evident that the best results for every application are only obtained when the right choices in terms of nozzle type flow value spray angle drop dimensions and nozzle material are madeThe purpose of the following pages is to give the reader the basic knowledge which is needed to properly select a spray nozzle for a given application

Spray nozzles

a spray nozzle is a device which makes use of the pressure energy of a liquid to increase its speed through an orifice and break it into dropsIts performances can be identified and described precisely so that the design engineer can specify exactly the spray nozzle required for a given process

The relevant characteristics which identify the performances of a nozzle are the following

1 The liquid flow delivered as a function of the nozzle feed pressure2 The opening angle of the produced spray3 The nozzle efficiency as the ratio between the energy of the spray and the energy used by the nozzle4 The evenness of the flow distribution over the target5 The droplet size distribution of the spray6 The jet impact of the spray

The above characteristics will be discussed in the following pages in connection with the different nozzle types

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TECHNIQUES FOR SPRAY PRODUCTION

Many different techniques can be used to produce a spray and most of them are used today for nozzles to be applied in industrial processes Based on the different techniques the following nozzle types can be used in industrial applications to generate a liquid spray

1 Pressure nozzlesThis is the simplest type of nozzles where an orifice is opened into a chamber where the liquid to be sprayed is fed under pressure A spray is produced through the orifice with spray pattern flow rate and spray angle depending upon the orifice edge profile and the design of the inside pressure chamberTypical pressure nozzles are the flat jet nozzles series GA J GX and GY

2 Turbulence nozzlesIn these nozzles the liquid moving towards the chamber preceding the orifice is given a rotational speed component so as to open up in a conical shape as soon as it leaves the orifice edge because of centrifugal force Based on the nozzle design and the technique used to generate the rotational speed the drops produced can be confined to the cone outer surface (hollow cone spray) or be evenly distributed to fill the entire volume of the cone (full cone spray)

3 Impact nozzlesHere the desired spray shape is obtained producing an impact of the liquid jet onto a properly designed surface The liquid jet is subsequently changed into a fluid lamina and then broken into drops with the desired spray pattern after leaving the nozzle edge

4 Air assisted atomizersFine and very fine sprays can be obtained by means of air assisted atomizers working upon various different principles More detailed information about air assisted atomizing can be found in our Catalogue Air assisted atomizers (ordering code CTG AZ18)

LIQUID SPRAY AND SPRAY NOZZLES Liquid spray

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FULL CONE PATTERN

In a full cone spray the droplets are distributed into a volume which is limited by a cone having its origin point at the nozzle orifice Such spray pattern is commonly used in a large variety of industrial processes since it is the one which allows to distribute in an even way the water flow onto a surface the full cone spray pattern is therefore useful as a typical example to evenly spray cooling liquid on a still surface Another typical use is to distribute liquid droplets within a certain volume like for example evenly distributing water droplets in the inside volume of a cooling tower

Because of the wide number of processes performed by means of full cone nozzles the original shape has evolved into a range of specialised types where the full cone spray pattern or a pattern similar to a full cone one is obtained by different techniques

Standard full cone (turbulence nozzle)These nozzles use a specially shaped vane placed at the nozzle inlet to give a rotational speed to the fluid flowing through the nozzleBecause of the rotational speed of the fluid water exiting the nozzle orifice is subjected to centrifu-gal force and opens up in the shape of a full coneThe extent of the angle of the cone is a function of both exit speed (created from the inlet pressure) and the internal design of the nozzle It can vary in practice from 15deg to 120deg

These nozzles can be also produced as square full cone nozzles where the square shape of the pyramidal spray is obtained by a special design of the outlet orificeTwo important details have to be noted from the system designer when using these type of noz-zles

the spray angle is measured on the side of the square sectionbullthe square section of the spray rotates within the distance from the nozzle orifice to the bulltarget area

Spiral full cone (deflection nozzle)This is not properly a full cone but rather a continuous liquid curtain evolving with the shape of a spiral inside a conical volume The disadvantage of a scarcely even distribution is compensated by an exceptionally good resistance to plugging which makes this nozzle the best choice in those applications where safety or system reliability are the prime concern eg fire fighting systems

Multiple full cone (turbulence nozzle air atomizer)This spray pattern is used in two cases that is

1 When a wide spray angle is to be reached with nozzles which inherently can only produce a narrow one or in such cases where small size droplets and rather high capacities are required Therefore several nozzles are grouped in a cluster with different spray directions the resulting spray pattern occurs from the additional group of single nozzle sprays and the droplet size of the spray remains the same as one of single nozzle It must be noted that a smaller nozzle will normally make smaller drops as compared to a larger size nozzle of the same type operating under the same conditions

2 When it is necessary to obtain a wide angle jet using nozzles which inherently deliver a lim-ited angle spray In the case of a wide angle air atomizer for example the droplet distribution is obviously not homogeneous and the result is rather a number of small angle sprays with different directions but still the liquid is atomized towards all the parts of the volume to be treated

LIQUID SPRAY AND SPRAY NOZZLES Spray nozzle types

Standard full cone

Spiral full cone

Multiple full cone

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FLAT JET SPRAY PATTERN

In a flat jet spray the liquid droplets are sprayed in the shape of a flat liquid layer with different thickness according to the principle used to generate the spray A flat jet spray nozzle serves the purpose of spraying onto a surface or an object moving in a transverse direction with respect to the one of the jet surface a typical example being the nozzles in a car washing tunnel The vast majority of flat spray nozzles used in the industry work according to one of the following principles

In line flat jet (pressure nozzle)This is the general purpose flat jet nozzle where the liquid enters the nozzle in line with the axis length and is fed to a pressure chamber from where it is ejected through the nozzle orifice Flow value and spray angle are determined respectively from the orifice cross section and the orifice edge profile

In line straight jet (pressure nozzle)These nozzles can be considered a special kind of flat jet nozzle with naught degree spray angle They are designed to produce a sharp stable stream with powerful impact on a given point and serve normally to perform cleaning processes or to cut soft materials

Spoon flat jet (deflection nozzle)In this type of nozzle the liquid is fed under pressure to a round outlet orifice and then deflected onto a smooth profiled surface so as to assume a flat jet shape This sophisticated design is of advantage since it offers a stronger jet impact using the same feed pressureHigher efficiency comes from the very little energy required to just change the direction of the liquid flow this being the only energy required to generate the flat jet

HOLLOW CONE SPRAY PATTERN

A hollow cone spray pattern consists of droplets concentrated onto the outer surface of a conical shape volume with no droplets contained in the inside of the conical jet shape These nozzles are normally used for smoke washing or gas cooling applications in several industrial processes

Hollow cone (turbulence nozzle)These nozzles use a tangential injection of liquid into a whirling chamber to generate centrifugal forces which break up the liquid vein as soon as it leaves the orifice Precisely designed orifice profiles making use of the Coanda effect provides the ability to obtain very large spray angles

Hollow cone (deflection nozzle)A hollow cone can also be obtained taking a liquid flow to change direction onto a properly designed surface in order to break the liquid into droplets and distributing them as a hollow cone spray patternThis kind of nozzle is mainly used for applications in dust control and fire fighting systems

LIQUID SPRAY AND SPRAY NOZZLES Spray nozzle typesLI

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PNR CODING SYSTEM

As any other industrial product spray nozzles need to be precisely identified by means of a code in order to avoid mistakesPNR coding system has been designed with the following requirements in mind

Codes must be easily processed by a computer in ascending orderbullCodes must describe completely the product without any need for additional descriptionbullCodes must show to the user the basic specifications of the nozzle in order to ease the search in the cataloguebull

We have therefore determined our coding system described as follows

LIQUID SPRAY AND SPRAY NOZZLES Spray nozzle coding

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AA U X YB312 305

Thread type or other connection

Special features

Nozzle material code (see below)

The three digits give the nozzle capacity in lpm at 3 bar according to rank value

Rank of flow value see table below

Nozzle spray angle see table below

Nozzle type as described in the catalogue pages shown in ascending order

Nozzle tables report on a blue background the nominal flow value measured at 30 barFlow values at different pressures have been calculated

These codes serve as an indication onlyBased on different types of nozzles their significance can occasionally be different

CAPACITY RANK

Rank Flow digits Actual flow (lmin)

0 0 490 049

1 1 490 490

2 2 490 490

3 3 490 490

4 4 490 4900

SOME SPRAY ANGLE CODES (DEGREES)

A = 0 L = 40 T = 80

B = 15 M = 45 U = 90

C = 20 N = 50 J = 110

D = 25 Q = 60 W = 120

F = 30 R = 65 Y = 130

H = 35 S = 75 Z = 180

A1 Carbon steel D6 Glassfibre reinforced PP L2 Incolloy 825

A2 High speed steel D7 High density polyethilene L8 Hastelloy C276

A8 Zinc coated steel D8 Polyvinylidenefluoride (PVDF) P6 Acr But Styrene (ABS)

A9 Nickel coated steel E0 EPDM P8 EPDM 40 Shore

B1 AISI 303 Stainless steel E1 Polytetrafluorethylene (PTFE) T1 Brass

B2 AISI 304 Stainless steel E2 PTFE (25 glassfibers) T2 Brass chrome plated

B21 AISI 304 L Stainless steel E31 Acetalic resin (POM) T3 Copper

B3 AISI 316 Stainless steel E7 Viton T5 Bronze

B31 AISI 316 L Stainless steel E8 Synthetic rubber (NBR) T8 Brass nickel plated

C2 AISI 416 Stainless steel hardened F5 Ceramic T81 Brass electroless nickel plated

D1 Polyvinylchloride (PVC) F31 Ruby insert 303 body V1 Aluminum

D2 Polypropylene (PP) G1 Cast iron V7 Aluminum electroless n plated

d3 Polyamide (PA) H1 Titanium

D5 Talcum filled Polypropylene L1 Monel 400

NOZZLE MATERIAL CODES

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LIQUID SPRAY AND SPRAY NOZZLES Computerized fluid dynamics

The customers demand for an always higher efficiency requires to use not only the best tooling but in addition control instruments and design methods always more sophisticated like for example new software for obtaining the velocity distribution of a fluid flowing through a conduit

These software programs require that the geometry of the inner con-duit to be geometrically defined and in addition the process conditions ( pressure temperature fluid capacity ) and the fluid properties ( specific weight viscosity ) to be Introduced

Based on the above data it is pos-sible to obtain a very precise dis-tribution for the velocity value in each single point of the conduit both under numeric form and flow diagramsThese Information make it possi-ble as an example to minimize the flow turbulence and consequently to Increase the nozzle efficiency through an increase in the fluid exit velocityThis is of basic Importance for some kind of nozzles for example those nozzles required to supply an high impact jet when performing descal-ing processes in a rolling millBy trial and error it is also possible to eliminate problems like jet Instability or cavitation

The overall process efficiency in the flow path before the nozzle can also be considered which often results into the design of geometry modifi-cation or the Introduction of special flow improving profiles along the conduit

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The diagram on the right shows the idealization of the process generating the droplets while the water jet exiting the nozzle is breaking up The theoretical model whose exactitude seems to be confirmed by scientific research considers that the liquid flowing through the nozzle and past the orifice edge evolves into a liquid lamina This lamina because of instability induced by aerodynamic forces breaks up first into elongated ligaments more or less cylindrical and later into droplets

Taking the above process as a guideline one can easily appreciate that the average droplet diameter is some what related to several factors like

1 The thickness of the lamina itself2 The evenness of the lamina 3 A steady flow and break up process

For what has been said above and limited to hydraulic nozzles the system designer looking for fine droplet sprays should consider that the following results can be expected

Impact nozzles best

Centrifugal hollow cone nozzles multiple full cone nozzles good

Turbulence nozzles fair

Centrifugal Vaneless full cones worst

The above choice is obviously based on the droplet generation process which changes from one nozzle type to another and allows to forecast which type is best fro the applicationAn additional consideration of interest is that the expected droplet size changes for the same type of nozzle with the nozzle size it is possible to generate smaller drops spraying the same water quantity at the same pressure using a greater number of smaller nozzles

In cases where energy requirements are not a problem or where a specified small droplet diameter is required the smal-lest droplets can be obtained by means of an air assisted atomizerHere the shear action of a high speed compressed air flow is used with several different techniques to obtain a value for SMD (Sauter Mean Diameter) of 50 microns and less

LIQUID SPRAY AND SPRAY NOZZLES Spray generation

Theoretical Mechanism of droplet generation

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SLIQUID SPRAY AND SPRAY NOZZLES Droplet spectrum

The atomization of a liquid by means of a compressible fluid like air steam or a gas is defined pneumatic two-phase or twin-fluid atomization Many industrial processes require the availability of finely atomized droplets and the techniques to produce atomized jets have been largely improved in the recent years In addition more sophisticated process techniques have incre-ased the demand for a precise definition about the characteristics of the spray and are now available to the design engineer Since many years PNR can supply upon request complete documentation containing test reports about the more interesting and additional information which are described below for all PNR products

Laser Interpherometer Test (By Pdpa)

PNR droplet size test reports are performed by means of a Laser Interpherometer (Phase Doppler Particle Analyzer) where two laser beams cross in a given point of the spray and define a test probe area Droplet flying through the probe area cause a light scatter which is picked up by the instrument receiver and processed through a computer in order to obtain relevant information about the spray characteristics

Report information

Report information is made of data printed on three pages where the first page contains the most interesting data which make possible to base process calculations upon precise data about spraying degrees process efficiency and jet behavior in operational ambiance These pages contain the Sauter Mean Diameter value whose knowledge is of special importance in heat exchange calculations about evaporative gas cooling processes since it gives the possibility of evaluating the exchange surface obtained by atomizing for a given liquid volume

The upper picture at page 18 referring to atomizing water by means compressed air shows two following histograms

bull Distribution curve of droplet diameter (micron)

bull Distribution curve of droplet velocities (mps)

and the below described values

bull Arithmetic Mean Diameter (D10)

bull Surface Mean Diameter (D20)

bull Volume Mean Diameter (D30)

bull Sauter Mean Diameter (D32)

ARITHMETIC MEAN DIAMETERThis is a diameter value which multiplied by the local num-ber of droplets in the sample equals the addition of alI droplets diameters

SURFACE MEAN DIAMETERThis is the diameter of such a droplet whose surface mul-tiplied by the total droplets number equals the sum of alI droplets surfaces

VOLUME MEAN DIAMETERThis is the diameter of such a droplet whose volume mul-tiplied by the total droplets number equals the sum of all droplets volumes

SAUTER MEAN DIAMETERThis is the diameter of such a droplet whose volumearea ratio equals the ratio between the sum of alI droplet volu-mes divided by the sum of alI droplet surfaces

D10 = Σ i ni di

Σ i ni

D20 = Σ i ni di

2

Σ i ni

D30 = Σ i ni di

3

Σ i ni

D32 = Σ i ni di

3

Σ i di

2

3

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AttemptsDroplet number crossing probe area during test time This includes both validated and not validated droplet

Correct Count Criteria A mathematic correction is applied to validate droplets which cross Probe Area in a peripheral belt or to droplets without a perfect spherical shape so that alI validated droplets parameters are homogeneous (This correction is necessary so that there is direct proportionally between laser beam phase and droplet number diameter)

Number Density It is the number of droplets passing through probe area within test time

Probe areaThis is the area where the two laser beams are crossing so determining the probe area AlI droplets intersecting probe area are checked droplets which respect given parameters for shape are taken as valid droplets and make up the sample whose size and velocity parameters are reported

ValidationsDroplets accepted based on given shape parameters to make up for test sample

Velocity MeanDroplets distribution speed histogram (ms)

Volume Flow RateIt is the volume measured in cubic centimeter per second of the validated droplets making up for the sample

Volume FluxIt is the flow rate per specific area measured in cubic centimeter per second and square centimeter of the validated droplets making up the sample

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LIQUID SPRAY AND SPRAY NOZZLES Droplet spectrum

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SLIQUID SPRAY AND SPRAY NOZZLES Droplet spectrum

PNR can supply upon request complete documentation con-taining test reports about the aforementioned parameters and additional information for all PNR atomizersThe diagrams beside show the distribution of droplet diameters and droplet velocities of a spray under test as available to our customers

In the photo beside a test being performed at our laboratoriesWe use a computer driven laser interpherometer to detect and record the spray parameters while fluid capacities and feed pressure values are monitored through high precision instru-ments

IMPORTANT NOTE

The droplet size values measured with a PDPA instrumentation are representative of a well specified volume inside the spray and taking measurements in a different volume they can be considerably differentA correct spray droplet size characterization requires then not only tests being performed in several volumes within the spray but also that those measure volumes are selected with regard to the process the droplets are expected to performAs an example the droplet characterization of a spray should define how many volumes have been tested and which are the coordinates of each single test volume in relation to the nozzle orifice

Most of the times pretending to describe the droplet spectrum of a spray nozzle at a given pressure with only one diagram is therefore not correct

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In order to calculate the discharge flow rate from a given nozzle the Bernoulli law shall be used which says that the energy of a liquid flow remains unchanged over alI the sections of the flow Friction and turbu-lence losses are neglected which is reasonable for our purposes if the cal-culation is performed over two sections not too far away from each other

The Bernoulli law can be written as follows

Therefore if we consider two sections of the same pipe section A and section B we can write that the flow energy remains constant in the form

If we finally consider that the two above sections are taken immediately before and immediately after the nozzle outlet orifice being

ZA = ZB PB = 0 (PA is a differential pressure referred at the atmosphere pressure)

VA cong 0 negligible as compared to VB (for orifice diameter much smaller than the duct diameter)

we shall come to the formula

When we define a new constant k to include the value of the nozzle orifice outlet area (A) then we come to the following equation which says that for a nozzle spraying into a room at ambient pressure the exiting flow is proportional to the feed line pressure

Considering now two different pressure values for the same nozzle since k is a constant quantity we can write that

and derive from the above an equation that makes it possible to calculate the nozzle flow value at any given pressure value once the flow value at another pressure value is known

The energy of a given liquid flow crossing a given pipe section is composed of three parts namely

P Pressure energy of liquid particle per volume unit

1 ρV2 Kinetic energy of liquid particle per volume unit2ρgz Potential Energy of liquid particle per volume unit

Where ρ = density of liquid g = gravitational acceleration

z = height respect to one plane of reference V = liquid velocity

PA = 1 ρVB 2 rArr

2

K = Q rArr

PK =

Q1 = Q2 rArr

P1 P2

Q = A V rArr

Q = A x C x P rArr

1 P + 1 ρV2 + ρgz = E

2

VB = 2 PA rArr ρ

Q1 = P1

Q2 P2

3 V = C P

4 Q = K P

2 PA + 1 ρVA 2 + ρgzA = PB + 1 ρVB

2 + ρgzB 2 2

EXIT VELOCITY DEPENDS UPON PRESSURE

NOZZLE CAPACITY DEPENDS UPON PRESSURE

NOZZLE CAPACITYAT A DIFFERENT PRESSURE

5 Q2 = Q1 P2

P1

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LIQUID SPRAY AND SPRAY NOZZLES Nozzle flow rate

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SLIQUID SPRAY AND SPRAY NOZZLES Nozzle flow rate

The Equation (5) has been obtained after having simplified the real problem neglecting several factors like for examplebullInmostofthepracticalapplicationcasestheflowisturbulentandnotlaminarbullFrictionlossestendtostronglyincreasewithliquidvelocitybullDependinguponthetypeofnozzleadifferentpercentageoftheavailableenergyisusedtobreakupthejetandgivethe

desired spray pattern and spray angle

For the above reason equation (5) gives reliable results if used in a limited pressure range around the pressure value where the flow rate is known with this pressure range depending upon the type of nozzleOur experience has shown that one can expect the error in the calculated value to be lower than +- 6 for pressure values ranging from 13 to 3 times the reference value

As an example a nozzle rated for 10 lpm at 3 bars would have according to equation (5) the following flow valuesa 1 bar 577 lpma 9 bar 173 lpmin real conditions it can be expected the flow rate values to beas high as 61 lpm a 1 baras low as 162 lpm a 9 barAbove considerations are to be used as a guideline only because of the many factors influencing real operations which have not been considered here for example liquid temperature viscosity and density

Possible percentage deviation from theoretical flow rate values

Also above mentioned percentage errors have to be understood for nozzles using part of the flow energy to produce wide angle spray patternsLower values can be expected for narrow angle nozzles impact nozzles and straight jet nozzles Laboratory tests and diagrams showing real flow rate values for each nozzles are used in practice when a precise result must be available

Nozzle discharge coefficient

With reference to equation (4) if we consider the pressure value to be equal to 1 (P = 1 bar) the flow rate of the nozzle becomes

K is a parameter widely used in the fire fighting industry

In some instances reference is made to the nozzle discharge coefficient or shortly to the nozzle coefficient to indicate the nozzle flow rate for a unitary pressure Of course for a given pressure value Pn the flow value will be

+ 6

+ 3

- 3

- 6

CAPACITY AT A GIVEN PRESSURE VALUEWHEN K KHOWN

NOZZLE CAPACITYFOR P=1 barQ = K P = K 1 = K

6 Qn = K Pn

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The spray angle is the opening angle which the nozzle jet of droplets forms at the moment when it leaves the nozzle orifice and it is one of the fundamental parameters for the choice of a given nozzleIn fact the amplitude of the spray angle determines in connection with the distance between the nozzle orifice and the target to be covered the spray coverage and the density of liquid sprayed with respect to the cover area See our Catalogue for description of the different nozzle spray patterns The table at the bottom of the page gives the theoretical spray width based on the nozzle spray angle and the distance from the nozzle orifice It is important to note that because of several factors like gravity forces and aerodynamic drag the spray angle value cannot be maintained but in in a limited distance normally up to 300 mm from the orifice For air assisted atomizers it is improper to use the term spray angle since no precise value can be measured Therefore the values given by Catalogues are to be intended as guidelines only

THEORETICAL SPRAY COVERAGE

at various distances from nozzle orifice

Spray 50 100 150 200 250 300 400 500 600 700 800 1000 Angle mm mm mm mm mm mm mm mm mm mm mm mm

15deg 13 26 40 53 66 79 105 132 158 184 211 263 25deg 22 44 67 89 111 133 177 222 266 310 355 443 30deg 27 54 80 107 134 161 214 268 322 375 429 536 35deg 32 63 95 126 158 189 252 315 378 441 505 631 40deg 36 73 109 146 182 218 291 364 437 510 582 728 45deg 41 83 124 166 207 249 331 414 497 580 663 828 50deg 47 93 140 187 233 280 373 466 560 653 746 933 60deg 58 116 173 231 289 346 462 577 693 808 924 1150 65deg 64 127 191 255 319 382 510 637 765 892 1020 1270 70deg 70 140 210 280 350 420 560 700 840 980 1120 1400 75deg 77 154 230 307 384 460 614 767 921 1070 1230 1530 80deg 84 168 252 336 420 504 671 839 1010 1180 1340 1680 90deg 100 200 300 400 500 600 800 1000 1200 1400 1600 2000 95deg 109 218 327 437 546 655 873 1090 1310 1530 1750 2180 100deg 119 238 358 477 596 715 953 1190 1430 1670 1910 2380 110deg 143 286 429 571 714 857 1140 1430 1710 2000 2290 2856 120deg 173 346 520 693 866 1040 1390 1730 2080 2430 2771 3464 130deg 215 429 643 858 1070 1290 1720 2150 2570 3002 3431 4289

WhereASCbull = Actual Spray CoverageTSCbull = Theoretical Spray CoverageASAbull = Actual Spray AngleTSAbull = Theoretical Spray AngleL bull = Spray Distances

TSC = 2 middot L middot ctan ( TSA )2

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SLIQUID SPRAY AND SPRAY NOZZLES Spray angle

Depending upon the nozzle design variations of feed pressure may have a great influence on the spray angle valueGenerally with increasing pressure turbulence full cone nozzles will produce narrower angles flat jet nozzles will show a wider angle spray while nozzles working on the deflection principle like spiral nozzles and K style flat jet nozzles will be less affected by pressure changesAll nozzles will not function properly with very low pressure values (from 05 bar down depending upon nozzle type ) with a marked decay in performance larger drops not well defined spray pattern lower spray angle values

The above pictures show spray angles for different nozzles and different pressure valuesShould your application strictly require that a given value of the spray angle is obtained under a given pressure value or pressure range of values please obtain a test report from our laboratories

Full cone nozze DDW 2235

Flat jet nozzleJCW 2245

Spiral nozzeECW 2230

Pressure 05 bar Pressure 05 bar Pressure 05 bar

Pressure 3 bar Pressure 3 bar Pressure 3 bar

Pressure 10 bar Pressure 10 bar Pressure 10 bar

Photo obtained with 120000s flashlight

picture 1

picture 4

picture 7

picture 2

picture 5

picture 8

picture 3

picture 6

picture 9

NotePicture 2 shows clearly the droplet generation mechanism as described at page 15

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Terms and definitions

A very important characteristic of a spray nozzle is a parameter called Spray Distribution which gives a precise information about how evenly the drops of the spray are distributed onto the area covered by the sprayIt is self understood that normally it is preferable to obtain the most even distribution possibleIn the past this was done through the visual examination of a diagram reporting the quantity of water contained for example in glass pipes aligned onto the spray coverage areaPnr has determined to obtain such a result in a scientific way through high technology instrumentation as shown in the pictures below showing one of our patternators and a typical distribution diagram

Now to the spray geometry and some definition letrsquos consider a nozzle with a capa-city Q at the pressure PAt every value for distance H which we call height of spray we can define a plane lsquonrsquo normal to the nozzle axis on which a line can define the intersection of the spray onto the planeThe area covered by the spray on the plane lsquonrsquo has a surface S depending from the following parametersa) Spray pattern Fb) Opening angle of the spray αc) Height of the spray H

We can then write S=S( F α H )

In case of a full cone nozzle S is a circle with diameter C and S = 0785 C2

The capacity of the nozzle flows through the surface S but each smaller area inside the surface S will probably have a different value for the flow passing through itWe introduce then the value of Specific Capacity q

1) Specific Capacity

The function q depends upon the single point (xy) in the section S and then

Determining the function q is however very expensive therefore in practice two different functions are used which give in most occurrences sufficient information

2) Linear Distribution

3) Angular distribution

part Qpart x

qx =

Diagram 1

q = limΔS 0

ΔQΔS

q = = f (x y H)part Qpart S

part Qpart φ

qφ =

ΔQ is the liquid flowing through a surface ΔSwhere ΔS is a fraction of the surface S

x and y are the local coordinates in the section planewhere H is the distance of the test surface from the nozzle orifice

partQ is the variation in capacitywhere partx is the variation of a generic linear coordinate

partQ is the variation in capacitywhere partφ is the variation of a generic angular coordinate

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LIQUID SPRAY AND SPRAY NOZZLES Spray Distribution

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LIQUID SPRAY AND SPRAY NOZZLES Spray Distribution

Values extracted from these functions can characterize the spray and allow for drawing the diagrams defined as Distribution Curves

Analyzing the above curves it is possible to determine the type of water distribution along the spray coverage and the type of spray pattern like for example a full cone hollow cone flat or straight jet spray

Distribution measurement

The water distribution along the spray coverage is determined by means of an instrument called Patternator

A patternator consists of the following parts 1) Liquid collector2) Cell block3) Measure block4) Unloading block

The nozzle is above the instrument and it is orienta-ted in such a way the jet is collected into the upper liquid collectorThe liquid collector can be linear ( diagram 5 ) or round ( diagram 6 ) according to the test being runFrom the single parts in the collector the liquid is sent into the corresponding cells below (2)

The Measure block (3) determines the liquid content in each single cell then the unloading block (4) empties the instrument sending the liquid to the collection drain

There are two types of patternators

Analogic1 the different levels of liquid is visible through the transparent walls of the cells or pipes sometimes containing some kind of floating balls and a picture can be taken with a cameraDigital2 Delivering an automatic reading of the values in the cells the values being supplied as an electronic file from which a distribution curve can be easily obtained

Diagram 2 Linear distribution Diagram 3 Angular distribution

Diagram 4

Diagram 6 Circular collectorDiagram 5 Linear collector

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LIQUID SPRAY AND SPRAY NOZZLES Spray Distribution

Normalizing distribution curve

The values obtained from the cells of the patternator showing the water quantity collected in the single cells allow for preparing a Distribution curve which can be given as a single line curve or as a row of vertical barsThese resemble the liquid level collected into the glass pipes of the old type instrumentation

The curves prepared based on the liquid level in the single cells still are not precise they depend in fact from the testing time the longer this time the larger the liquid quantity sprayedTo eliminate the influence of time from the test it is necessary to transform the effective curves to normalized curves

Normalized4) linear distribution

Normalized5) angular distribution

Please note that Maximum value is the one belonging to the series of values measured in the cellsIn addition to the distribution it is possible to normalize the intervals to with the following formulas

Normalized 6) linear interval

Normalized 7) angular interval

The linear normalized amplitude is defined inside an interval [-1 +1]The angular normalized amplitude is defined inside an interval [0+2π]

Diagram 7 Effective linear distribution curve Diagram 8 Effective angular distribution curve

Mx

xx q

q=δ

N

πθ

2=Δ

Diagram 9 Normalized linear distribution curve Diagram 10 Normalized angular distribution curve

qx is the linear distribution of a generic cellwhere qx

M is the maximum linear distribution measured

qφ is the linear distribution of a generic cellwhere qφ

M is the maximum linear distribution measured

2 is the normalized linear amplitude of the spraywhere N is the number of active cells (active cells = cells containing liquid)

2π is the normalized angular amplitude of the spraywhere N is the number of active cells (active cells = cells containing liquid)

Mq

q

ϕ

ϕϕδ =φ

φ

φ

2

N=Δλ

2

N=Δλ

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Evaluation of spray distribution

To evaluate distribution curves it is necessary to take three properties into consideration

a) UNIFORMITY b) MONOTONY c) SIMMETRY

As described in the following diagrams and definitions

a) UNIFORM A distribution that minimizes the ratio AAdeg

b) MONOTONE Is a distribution with a curve which grows on the left side and decreases on the left side c) SYMMETRIC Is a distribution which minimizes the Ratio A+A-

Based on the above definitions the following curves show the ideal situations

The three properties are then evaluated by means of the following parameters

1 Integral uniformity

2 Incremental uniformity

3 Symmetry index

Complete details about the above formulas and definition can be found in our Technical Bulletin REL 080002 which shall be released from our Technical Department on request

Diagram 12Normalized and monotone distribution

Diagram 11Normalized and monotone distribution

Diagram 14Ideal monotony

Diagram 15Ideal symmetry

Diagram 13Ideal uniformity

1001 sdot=MA

AU

1002

2 sdot=lowastσ

U

1001

sdot⎥⎦

⎤⎢⎣

sdotminus=

lowast

lowast

δ

ε

NI S

sum minus=lowast

M

i iδδε

A is the area included in the normalized curvewhere Adeg is the rest of the area included in the 2x1 rectangle

Left side is the area -1 0where Right side is the area 0 +1

A+ is the area included below the curve on the right sidewhere A- is the area included below the curve on the left side

where

where δrsquo is the value of normalized liquid content in the symmetric cell N number of cells containing liquid in half of the diagram

lowast

lowast sum=

N

N

i i

δ

δ N Number of cells containing liquid

A area included below the curve AM area included below the ideal curvewhere

sum minus= +lowast

1

N

i ii δδσ

N Number of cells containing liquid

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SLIQUID SPRAY AND SPRAY NOZZLES Spray Distribution

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Liquids are characterized for their property of undergoing continuous deformation when subjected to shear stress The property of fluids (liquids or gases) to resist flowing due to the existence of internal friction within the fluid is called visco-sity

Thus if we imagine the different layers of fluid sliding one over the other with friction we can imagine that viscosity is defined the force required to move a unit area of fluid for a unit distance Viscosity is measured with many different systems among which the most used are the following

The following table shows correspondences between the most used viscosity units

The viscosity value of a liquid depends upon the temperature therefore the viscosity value must always be given with reference to a temperature value The viscosity of water (20deg C) is 1 Centipoise and 1 Centistoke since water mass density = 1

KINEMATIC SAYBOLT SAYBOLT ENGLER VISCOSITY UNIVERSAL FUROL

Centistoke Sq feetsec SSU SSF Degrees

100 000001076 310 --- 100

500 000005382 424 --- 137

1000 00001076 588 --- 183

1566 00001686 80 --- 245

2052 00002209 100 --- 302

2515 00002707 120 --- 357

4295 00004623 200 --- 592

1080 0001163 500 523 1460

1510 0001625 700 720 2044

1942 0002090 900 921 2628

3023 0003254 1400 143 4090

3885 0004182 1800 183 5260

5394 0005806 2500 254 7300

10788 001161 5000 509 146

15103 001626 7000 712 204

19419 002092 9000 916 263

32365 003483 15000 1526 438

METHOD UNIT DIMENSIONS NOTES

1 Dynamic viscosity(Absolute viscosity) Poise ML T-1 Poise = 100 Centipoises = (1 dyne per seccm2)

2 Kinematic viscosity Stoke L2 T-1 1 Stoke = 100 Centistoke = (cm2sec)Kinematic viscosity = Dynamic viscositydensity

3 SSUSSF

One of the most widely instruments to determine is the Saybolt viscosimeter which measures the time in seconds required for a fixed volume of a given liquid to flow through an orificeSSU = Seconds Saybolt Universal relates to a smaller orifice for less viscous liquidsSSF = Seconds Saybolt Furol relates to a larger orifice for more viscous liquids

LIQUID SPRAY AND SPRAY NOZZLES Influence of liquid viscosity

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Viscosity influence on nozzle flow rate

AlI nozzle Catalogue data refer to spraying water (water cinematic viscosity is equal to 1 Centistoke)A liquid with viscosity higher than water will require more energy to be pumped and sprayed and will flow with lower velocity at the same pressure and this will cause a reduction in the turbulence of the flow For the above reason nozzles working on the turbulence principle like normal full cone nozzles and whirl hollow cone nozzles will show an increase in capacity while spraying liquids with viscosity higher than water This increase is very consistent for small size nozzles where the small radius of the whirl chamber tends to cause high turbu-lence in the flow and tends to diminish and to disappear for nominal capacity valves (capacity values at 3 bar) larger than 15 liters per minute

The graph below shows for a liquid with a viscosity of about 4 Centistokes typical variations in the nozzle flow rate value for different values of the nozzle whirl chamber diameter As it may be seen these variations can be neglected in most practical applications where nozzles with whirl chamber diameters well over 3 mm are used

For other types of nozzles not working on the turbulence principle the increase on viscosity will simply reduce the liquid exit velocity at the orifice thus causing a decrease in capacity Experience shows that this decrease ranges between 3 and 6 of nominal water capacity that is to say that the variation introduced is in the same order of magnitude as the nozzle flow rate toler-ance

Viscosity influence on nozzle spray angle and spray pattern

With reference to the theory of jet break-up and droplet information it can be easily imagined that spraying a liquid more viscous than water is a difficult task

Al the properties of the spray tend to worsen therefore one can expectA higher value for the minimum operating pressure that is the pressure value which allows for obtaining a well defined 1 spray with the expected spray angle A worse spray distribution since the viscous behavior of the liquid makes it more difficult to pro-duce fine droplets and 2 to distribute them evenly with the desired spray pattern A narrower spray angle It is difficult to give guidelines since results on different nozzles at different pressures and with 3 different liquids are scarcely predictableHowever our experience shows that in many cases the use of impact nozzles can give acceptable results where all other type of nozzle failsA laboratory test or a field test are stili the safest way to obtain sound results

50

45

40

35

30

25

20

15

10

5

0 2 3 4 5 6 7 8 9

Increase Flow rate vs Whirl Chamber Diameter

Incr

ease

Flo

w R

ate

[mm

]

Whirl Chamber Diameter [mm]

LIQUID SPRAY AND SPRAY NOZZLES Influence of liquid viscosityLI

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With reference to the Bernoulli Rule as exposed in page 6 one can say that the pressure energy of the liquid flow at the nozzle inlet is transformed totally (minus some losses due to friction inside the nozzle) into liquid velocity at the nozzle orificeCatalogue figures give nozzle capacities when spraying waterIf the specific gravity or density of the liquid is different from that of water the available pressure energy will produce a different liquid velocity at the nozzle orificesIn other words a given quantity of energy will spray always the same quantity of liquid mass but different volumes (flow rates) according to the liquid specific gravity or density

Therefore a liquid heavier than water will exit the nozzle with a lower velocity at lower flow rate while to the contrary a liquid lighter than water will be sprayed at higher velocity at higher flow rate

The following formula is to be applied

The table below gives the value of a correction factor to obtain the flow rate of a liquid with different specific weight as water

WhereQL Liquid flow rateQW Water flow rateF Correction factor

kgliter Libregallon F

06 50 129

07 58 120

08 67 112

09 75 105

10 83 100

11 92 095

12 100 091

13 109 088

14 117 085

15 125 082

16 134 079

17 142 077

18 150 075

19 159 073

20 167 071

QL = F QW8

LIQUID SPRAY AND SPRAY NOZZLES Influence of liquid specific gravity

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The spraying water impact of a nozzle depends on several factors and more precisely spray distribution pattern and spray angle The first step to calculate the impact value which is usually expressed in Kilograms per square centimeter is to deter-mine Total Theoretical lmpact Value using the following formula

The obtained value has to be multiplied by the Total Theoretical Impact per Square Centimeter Coefficient (E)The final value is the Spraying Liquid Impact expressed in kgpcm2Of course not alI the energy of the fluid vein is transferred to the impact point

A part of this energy sometimes a considerable part goes to obtain a desired spraying angle by having the liquid vein acquire a high rotational speed inside the whirl chamber The highest value of impact is obtained with straight jet nozzle and the value can be calculated multiplying spraying pressure per 19The tables below containing the Total Theoretical Impact sqcm coefficient values for different spray pattern nozzles for a dis-tance of 300 mm

[kgpcm2]

TOTAL THEORETICAL IMPACT PER SQ CM COEFFICIENT AT DISTANCE OF 300 MM (E)

Spray Flat jet nozzle Spray Full cone nozzle Spray Hollow cone nozzle Angle Angle Angle

15deg 0300 15deg 0110 25deg 0180 35deg 0130 30deg 0025 40deg 0120 50deg 0100 50deg 0010 65deg 0070 65deg 0004 60deg80deg 001002 80deg 0050 80deg 0002 100deg 0001

WhereQ is the flow rate at working pressure in lpmP is the pressure value in kgpcm2

[kgpcm2]TTI = 0024 Q P

SLI = E TTI

9

10

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SLIQUID SPRAY AND SPRAY NOZZLES Jet impact

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Jet impact diagram

A further parameter to characterize the performance of a spray nozzle is the distribution of the jet impact force which could be derived by means of mathematical methods from the values of the spray distribution onto the surface covered by the spray but which can more easily be measured with the help of specifically designed instrumentation

In some applications the jet impact force Is the most important parameter used to realize the required processSteel sheet descaling in a rolling mill is a typical example where the jet impact is required to take away the surface scale and obtain a perfectly even surfaceFor that reason special nozzles have been developed to perform this very task where service life impact value and spray distribution reach the values required for satisfactory resultThese test are performed in a laboratory equipped with a specifically designed instrumentation where the high pressures involved in these process can be reached which can measure the pressure values along a matrix of points distributed in the spray area covered by the nozzle

These values are supplied both in a table of values and as a 3D pressure diagram similar to those shown below

On such applications where producing high impact values in the jet is necessary it is of paramount importance that the liquid flow turbulence is kept to a minimum and therefore it is widely used to insert into the nozzle entrance devices designed to improve the operating conditions by forcing the liquid flow through straight passages with several different shapes by doing so the impact delivered by the spray is increased with the same feed pressure

One typical shape used by Pnr is shown on the right and the two dia-grams below show the impact force diagrams for the same nozzle with and without a flow straightener the reduction of flow turbulence can lead in increase of impact force often higher than 20Further improvements of course are available when the nozzle inside profile is properly designed in order to avoid sharp cross section changes and all surfaces are finished as smoothly as possible

Typical design of a Pnr flow straightener

Impact pressure diagram with flow straightenerImpact pressure diagram without flow straightener

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LIQUID SPRAY AND SPRAY NOZZLES Pressure drop through a nozzle

Pressure drop through a nozzle

Some of our customers have asked us In the past which Is the pressure drop through a nozzle since they consider a nozzle one of the parts in a piping like a valve or an elbow which causes a given pressure drop along the line

The reality is different and can be easily understood when considering the Bernoulli formula [2] as given at page 19 of this manual the formula says that the total energy of a liquid flow is made from the addition of three facors

Potential energy due to elevationbullPressure energybullVelocity energybull

When we apply the formula at the entrance and at the outlet ( the orifice ) of a nozzle and we neglect the influence of turbulence losses in between we can easily see that

The potential energy variation can be neglected because of the limited dimensions of the nozzle since the distance bullbetween the nozzle entrance and the nozzle orifice plays no role-The pressure energy variation is important since the liquid pressure value falls abruptly from the pressure inside the feed bullpipe to the ambient pressureThe velocity energy variation is also consistent since the liquid is ejected from the orifice at high speedbull

In other words the pressure energy of the liquid flowing through the orifice is suddenly transformed in liquid drops velocity which is exactly what a nozzle is designed to do

This is shown from equation [3] at page 19 which allows the exit velocity from the nozzle to be calculated from the pressure inside the pipe ( we actually consider the pressure difference between the inside of the pipe and the ambient pressure in this formula )

In other words all the energy still available at the nozzle is converted into velocity or if you so prefer you have a total pressure fall The system designer shall therefore evaluate all the pressure drop between the pump outlet flange and the nozzle entrance in order to be sure that the nozzle feed pressure is sufficient to assure the desired capacity for the liquid being sprayed

parameters valuesat nozzle outlet

nozzle inlet nozzle oulet or orice

feed pressure

inlet velocity

parameters valuesat the nozzle inlet

(A)potential elevation

energy

(A)velocity ( kinetic ) energy

(A)pressure energy

ambient pressure

exit velocity

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The choice of the right material for a nozzle is sometimes the most important one to do since the nozzle operating life depends upon it There are several factors to influence or shorten the nozzle operating life sometimes more than one at the same time the most important being

Wear from solid particles suspended into the liquid being sprayed1 Chemical corrosion from the liquid being sprayed 2 Chemical corrosion from the ambience outside the nozzle3 Exposure to high temperature 4 Exposure to mechanical shocks5

NOZZLE MATERIALSPnr material codes 34Properties of materials 35Mechanical properties of materials 39Chemical resistance of materials 40

NOZZLE MATERIALS

34 wwwpnr-nozzlescom CTG SH 07 EU

PNR has adopted a short code to identify construction materials for nozzles and nozzle partsHere below the most frequenty used materials

MATERIAL STANDARDS

The following standards are mentioned with reference to materials identification

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A1 Free Cutting Steel E1 TEFLONreg (PTFE) L3 NICROFERreg 5923

A2 Carbon Steel E3 DELRINreg (POM) L4 STELLITEreg 6

A8 Zinc Plated Mild Steel E6 PERSPEXreg (PMMA) L5 HASTELLOYreg B2

A9 Nickel Plated Mild Steel E7 VITONreg (FPM) L6 HASTELLOYreg C4

B2 AISI 304 Stainless Steel E8 NBR- Sh 70 Rubber L61 HASTELLOYreg C22

B3 AISI 316 Stainless Steel E81 SANTOPRENEreg Rubber L62 ULTIMETreg

B31 AISI 316L Stainless Steel E82 KLINGERITEreg L7 NICKEL 201

B4 AISI 321 Stainless Steel E83 HYPALONreg L8 HASTELLOYreg C276

B8 AISI 309 Stainless Steel E91 Silicon L9 SANICROreg 28 SS

B81 AISI 310 Stainless Steel F12 Tungsten Carbide (TC) N1 AISI 302 Stainless Steel

C1 AISI 420 St Steel hardened F2 PIREXreg P6 ABS

C4 AISI 317 Stainless Steel F3 Rubin P7 FASIT OIL

C6 SAF 2205 Stainless Steel F4 Zapphire P8 EPDM ShA Rubber

D1 Polyvinylchloride (PVC) F5 Ceramic P9 STIROLUXreg 637

D2 Polypropylene (PP) F6 Silicon Carbide (SC) T1 Brass

D3 Polyamide (PA) G1 Cast Iron T3 Copper

D5 Powder Charged PP H1 Titanium T5 Bronze

D6 Fiberglass Charged PP L1 MONEL 400 T8 Nickel Plated Brass

D7 High Density Polyethylene L2 INCOLOYreg 825 V1 Aluminium

D8 Polyvinylidenefluoride (PVDF) L21 INCONELreg 600 V7 Aluminium ENP

STANDARD ORGANIZATION COUNTRY STANDARD CODE

AFNOR Association Franccedilaise de Normalisation France NF

AISI American Iron and Steel Institute USA AISI

ANSI American National Standards Institute USA ANSI

ASTM American Society for Testing and Materials USA ASTM

BSI British Standards Institution UK BS

DIN Deutsches Institut fuumlr Normung Germany DIN

DSIT Dansk StandardsInformation Technology Denmark DS

ISO International Organization for Standardization International ISO

JIS Japanese Institute for Standard Japan JIS

UNI Ente Nazionale di Unificazione Italy UNI

NOTEThe complete list of the Materials Codes may be requested to our Technical Service mentioning release code TGCE CODMAT

NOZZLE MATERIALS PNR material codes

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B1 AISI 303 STAINLESS STEEL

Chemical composition CR 1750 NI 850 S 025 Coding correspondence

Type Stainless Steel Austenitic AISI 303

Hardening Not possible BS 303 S 21

Annealing 1050 1100deg C in water DIN Wnr 14305

Welding Possible with precautions Euro X10CrNiS1809

Corrosion properties

Good resistance Atmospheric exposure food substances organic chemicalsLow resistance Chlorides reducing acids and over 800deg C

JIS SUS 303

NF Z6CN 18-09

SIS 2346

UNI XWCrNiS 1809

B3 AISI 316 STAINLESS STEEL

Chemical composition C 005 CR 170 NI 120 MO 225 Coding correspondence

Type Stainless Steel Austenitic AISI 316

Hardening Not possible BS 316 S 21

Annealing 1050 1100deg C in water DIN Wnr 14401

Welding Easy using same steel electrodes Euro X6CrNiMo17122

Corrosion properties

Good resistance Atmosphere great number of salts organic acids foodsLow resistance Solutions of reducing acids temperatures over 500deg C

JIS SUS 316

NF Z6CND 17-11

SIS 2347

UNI X5CrNiMo1712

B31 AISI 316L STAINLESS STEEL

Chemical composition C 003 CR 170 NI 130 MO 225 Coding correspondence

Type Stainless Steel Austenitic AISI 316 L

Hardening Not possible BS 316S12

Annealing 1050 1100deg C in water DIN Wnr 14404

Welding Easy using same steel electrodes Euro X3CrNiMo1810

Corrosion properties

Good resistance Atmosphere great number of salts organic acids foods salt waterLow resistance Solutions of reducing acids temperatures over 500deg C

JIS SUS 316L

NF Z2CND17-12

SIS 2348

UNI X2CrNiMo 1712

NOZZLE MATERIALS Properties of materials

36 wwwpnr-nozzlescom CTG SH 07 EU

C1 AISI 420 STAINLESS STEEL

Chemical composition C 020 CR 1300 Coding correspondence

Type Stainless Steel Martensitic AISI 420

Hardening 980deg - 1030deg C in oil BS 420 S 29

Annealing 750deg - 800deg C in air DIN Wnr 14021

Welding Possible with precautions Euro X20Cr13

Corrosion properties Good resistance Drinkable water steamgasoline oil alcohol ammonia

JIS SUS 420 J1

NF Z20C13

SIS 2303

UNI X20Cr13

C2 AISI 416 STAINLESS STEEL

Chemical composition C 012 CR 1250 S 022 Coding correspondence

Type Stainless Steel Martensitic AISI 416

Hardening 950deg - 1100deg C in oil BS 416 S 21

Annealing 750deg - 800deg C DIN Wnr ---

Welding Not possible Euro X120CrS13

Corrosion properties Good resistance Drinkable water steamgasoline oil alcohol ammonia

JIS SUS 416

NF Z12CF13

SIS ---

UNI X12CrS13

D8 POLYVINYLIDENE FLUORIDE (PVDF)

Description HIGH-MOLECULAR WEIGHT THE TOUGHEST OF THE FLUOROCARBON RESINS

Trade names amp SuppliersKYNAR (Atochem North America Inc formerly Penwalt Corporation)

SOLEF (Solvay Polymer Corporation)

Physical andMechanical Properties

Excellent resistance to abrasion and stress fatigue

Extremely pure opaque white resin

Thermal Properties UsefuI in temperatures ranging from -73 149degC (-100 300degF)Heat deflection temperature is (8090deg C at 182 Bars (176 194deg F at 264 psi)

Chemical Compatibility

Excellent chemical resistanceCan be used with wet or dry halogens most strong acids and bases aliphatics aromaticsalcohols and strong oxidizing agentsNot recommended for contact with ketones esters amines and some organic acids(fuming sulfuric acid)

NOZZLE MATERIALS Properties of materialsN

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E1 POLYTETRAFLUOROETHYLENE (PTFE)

Description FLUOROPLASTIC THAT HAVE SOME OR ALL OF THEIR HYDROGEN MOLECULESREPLACED BY FLUORINE

Trade names amp Suppliers

TEFLON TFE FEP and PFA (Dupont Polymer Products)

NEOFLON (Daikin)

FLUON (ICI Americas Inc)

SST-2SST-3 (Shamrock Technologies Inc)

Physical andMechanical Properties

Low coefficient

Low adhesiveness

Buona resistenza agli agenti atmosferici

Good weatherabilityLow resistance to creep and wear unless reinforced with glass figravebers which results in superior resistance

Thermal Properties High and low temperature stabilityHeat deflection temperatures range from 4855deg C at 182 bar (118-132deg F at 264 psi)

Chemical CompatibilityChemically inert

Totally insoluble

E3 ACETAL (ACETAL HOMOPOLYMERS AND COPOLYMERS)

Description HIGHLY CRYSTALLINE RESINS BASED ON FORMALDEHYDE POLYMERIZATION TECHNOLOGY

Trade names amp Suppliers

DELRIN (Dupont Polymer Products Corporation)

CELCON (Hoechst Celanese Corporation)

ULTRAFORM (BASF Corporation)

RTP 800 (RTP Corporation)

LUPITAL amp TENAL (Franklin Polymers Inc)

FULTRON 404 (ICI Americas Inc)

Physical andMechanical Properties

High tensile strength rigidity and esilience

High fatigue endurance

Excellent dimensional stability

Low coefficient of friction

Outstanding abrasion and wear resistance

Excellent creep resistance

Thermal Properties Heat deflection temperatures range from 110 -136deg C at 182 bars(230 - 270deg F at 264 psi) higher if glass figravelled

Chemical Compatibility

Remains stable in long-term high temperature water immersionExcellent resistance to chemicals and solvents but prolonged exposure to strong acids not recommendedNote Suitable for close-tolerance high-performance partsAvailable for machined parts or may be injection molded

NOZZLE MATERIALS Properties of materials

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L6 HASTELLOY C4

PHYSICAL AND MECHANICAL PROPERTIES CHEMICAL COMPOSITION CORROSION RESISTANCE

R = 650800 Mpa C = 0015 max

Very good against pitting and tensile-corrosion specially in oxydizing atmosphereResistance in welded joints definitely better than C 276 lower than C22

Rp02 = 250470 Mpa Ni = 65

HRB = 90 Cr = 160

Mo = 155

W = --

Fe = 3 max

Ti = 05

Co = 2 max

APPLICATIONSRecommended for applications with strongly oxidizing atmosphere

L61 HASTELLOY C 22

PHYSICAL AND MECHANICAL PROPERTIES CHEMICAL COMPOSITION CORROSION RESISTANCE

R = 700800 Mpa C = 001 max

Excellent performances with oxydizing atmospheres as well as for pitting and tensile-corrosion conditionsVery good resistance in reducing atmospheres and for welded joints

Rp02 = 360420 Mpa Ni = 56

HRB = 93 Cr = 22

Mo = 13

W = 3

Fe = 3

Ti = --

Co = 25 max

APPLICATIONSChemical industry (gas ducts gas washing and treatment systems phosphoric acid production) Heat exchangers pumps chlorination reactors

L8 HASTELLOY C 276

PHYSICAL AND MECHANICAL PROPERTIES CHEMICAL COMPOSITION CORROSION RESISTANCE

R = 600800 Mpa C = 0015 max

Very good in reducing and oxydizing atmospheresVery good against pitting and tensile-corrosionAcceptable resistance in welded jointsIn cast parts excessive segregation not eliminated by thermal treatment of annealing makes it convenient to use C22 or C4 qualitieswhich assure better corrosion resistance and mechanical properties

Rp02 = 300370 Mpa Ni = 57

HRB = 90 Cr = 145165

Mo = 1517

W = frac345

Fe =

V = 035 max

Co = 25 max

APPLICATIONSChemical industry (air ducts scrubbers fans) Paper industry Thermoelectric plants Steel thermal treatments

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MATERIALTENSILE STRENGHT

CORROSION RESISTANCERp 02 R

20degC 800degC 20degC 800degC

(68degF) (1408degF) (68degC) (1408degC)

AISI 302 280 100 680 200

Good sensitive to corrosionbetween grains for slow heatingand cooling in the 450-900deg Crange temperature

AISI 303 280 100 680 200 Discrete

AISI 304304L 270 90 600 100Good especially for 304L304 sensitive to corrosionbetween grains like AISI 302

AISI 309 250 100 640 220 Good Sensitive to corrosion between grains like AISI 302

AISI 310 310 170 650 270Good (gt 304 - 304L)Sensitive to corrosionbetween grains like AISI 302

AISI 316316L 270 110 560 220 Very high especially for 316L

AISI 321 210 100 540 140 Good

AISI 347 280 120 620 200 Good

AISI 416 620 70 750 90

Good in medium corrosive ambient (atmosphere water gasoline alcohol N1-13 foods)Not in high corrosive

BRASS 110-150 --- 360-410 --- Good especially when nickel plated

BRONZE 100-300 --- 200-600 --- Discrete especially with sea water

CAST IRON le 500 V 100-800 V

NICKEL ALLOYS 100-1000 V 300-1300 VVery high also for high temperature To use in the temperaturerange 800-1200deg C

PLASTICS --- --- 20-200 ---

Good also for erosionGenerally they are attackedwith oxidizers like nitric acidhalogens ect

PTFE --- --- 30-40 ---

Very high except for elementarystate of alkaline metalsand to compounds containingfluorine at high temp

DUPLEX STEEL gtAISI 3 gtAISI 3 gtAISI 3 gtAISI 3 Very high also with high temperatureand also for pitting

TITANIUM alloy 195-850 V 300-900 VVery high in oxidizing ambientVery low in reducing ambient and with compounds containing fluorine

Legend Rp 02 = 02 YIELD STRENGHT [MPa]R = ULTIMATE TENSILE STRENGHT [MPa]V = To verify time by time

NOZZLE MATERIALS Mechanical properties of materials

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PIPI

NG

PIPINGPipes data 74Economic pipe sizes 75Pressure drop in clean steel pipes 76Flange dimensions 78Sieve size conversion chart 80

PIPING

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The following table report the data of pipes according to ANSI B3619 that is one of the most used standards that regulate welded stainless steel pipes

DN NPS OD[mm]

SCHEDULE

5S 10S 40SSTD 80SXS

t m t m t m t m

[mm] [kgm] [mm] [kgm] [mm] [kgm] [mm] [kgm]

6 18 103 NA NA 124 028 173 037 241 048

8 14 137 NA NA 165 050 224 064 302 081

10 38 172 NA NA 165 064 231 086 320 112

15 12 213 165 081 211 101 277 128 373 164

20 34 267 165 103 211 130 287 171 391 223

25 1 334 165 131 277 212 338 254 455 328

32 1frac14 422 165 167 277 273 356 344 485 453

40 1frac12 483 165 192 277 315 368 411 508 549

50 2 603 165 242 277 399 391 551 554 759

65 2frac12 730 211 374 305 534 516 875 701 116

80 3 889 211 458 305 655 549 115 762 155

90 3frac12 1016 211 525 305 752 574 138 808 189

100 4 1143 211 592 305 849 602 163 856 226

125 5 1413 277 960 340 117 655 221 953 314

150 6 1683 277 115 340 140 711 287 1097 432

200 8 2191 277 150 376 202 818 431 1270 656

250 10 2730 340 229 419 282 927 611 1270 827

300 12 3239 396 317 457 365 953 749 1270 988

350 14 3556 396 348 478 419 NA NA NA NA

400 16 4064 419 421 478 480 NA NA NA NA

450 18 457 419 474 478 541 NA NA NA NA

500 20 508 478 602 554 696 NA NA NA NA

550 22 559 478 662 554 767 NA NA NA NA

600 24 610 554 837 635 959 NA NA NA NA

Where

DN = Nominal diameter NPD = Nominal Pipe Size OD = Outside Diameter t = Wall Thickness m = Specific WeightPIPI

NG

PIPING Pipes data

75wwwpnr-nozzlescomCTG SH 07 EU

The following Specific Pressure Drops (Y) are normally used in the good engineering practice(where Y=ΔPL ΔP Pressur Drop and L Pipe Lenght)

For pipe sizing the Velocity (V) is also usedIn the following table are shown the typical liquid velocities in steel pipes

Some fixed pressure drop values indicationsfor gate valves (fully open) consider a pressure drop of 5 metersbullfor normal bends consider a pressure drop of 5 metersbullfor a check valve consider a pressure drop of 15 metersbull

In the succeeding tables we show the velocity and specific pressure drop for several flow rates and pipe diameters

Not boiling waterY = 02divide05 bar100 m for pump discharge (07 bar100 m max if P gt 50 bar)

Y lt 0110 bar100 m for pump suction

Boiling water Y = 004divide005 bar100 m for pump suction (velocity = 03divide09 ms)

LIQUID LINE TYPE

Specific Pressure Dropsvs Velocity [ms]

0 lt V lt 2 3 lt V lt 10 10 lt V lt 20

NOT BOILING WATER

Pump suctionPump discharge (long)Discharge leads (short)Boiler feedDrainsSloped sewer

03 divide 0606 divide 0912 divide 2712 divide 2709 divide 12

-

06 divide 1209 divide 1515 divide 3715 divide 3709 divide 1509 divide 15

09 divide 1812 divide 2124 divide 4224 divide 42

-12 divide 21

HYDROCARBON LIQUIDS(normal viscosity)

Pump suctionDischarge heather (long)Discharge leads (short)Drains

05 divide 0808 divide 1112 divide 2709 divide 12

06 divide 1209 divide 1515 divide 3709 divide 15

09 divide 1812 divide 2124 divide 46

-

MEDIUM VISCOSITY OILPump suctionDischarge (short)Drains

--

03

05 divide 0901 divide 0209 divide 15

08 divide 1501 divide 0312 divide 18

OTHER WATERCooling tower Chilled waterSea water and generally foulingwater (long pipes) ()

06 divide 09 09 divide 15 12 divide 21

Note () In this case Cameron method has to be used with C=1 Y = 005 divide 012 bar100 m for principal manifold Y = 012 divide 023 bar100 m for secondary manifold

PIPI

NG

PIPING Economic pipe sizes

76 wwwpnr-nozzlescom CTG SH 07 EU

18rdquo 14rdquo

1 0350 0370 0200 0090 38rdquo 12rdquo

2 0705 1340 0395 0331 0223 0082 0145 0029 34rdquo

3 1060 2890 0593 0673 0333 0176 0217 0061 0125 0016 1rdquo

4 1410 4940 0788 1150 0444 0291 0290 0101 0167 0027 0110 0010

5 1760 7460 0985 1750 0556 0424 0362 0149 0209 0040 0137 0014

6 1180 2460 0667 0594 0434 0207 0251 0054 0165 0019 114rdquo

8 1580 4060 0892 1020 0579 0351 0335 0091 0219 0033 0126 0009 112rdquo

10 1110 1530 0724 0534 0418 0136 0274 0049 0158 0012 0116 0006

15 1670 3250 1090 1130 0627 0284 0411 0099 0236 0026 0174 0012

20 2rdquo 2230 5600 1450 1900 0836 0481 0549 0168 0315 0043 0233 0021

30 0212 0013 212rdquo 2170 4130 1250 1020 0823 0353 0473 0092 0348 0043

40 0283 0022 0190 0007 2900 7180 1670 1760 1100 0606 0631 0155 0465 0073

50 0354 0032 0237 0012 2090 2700 1370 0911 0789 0233 0581 0108

60 0424 0044 0284 0017 2510 3810 1650 1290 0943 0321 0697 0150

70 0495 0079 0332 0022 3rdquo 2930 5120 1920 1720 111 0434 0814 0199

80 0566 0074 0379 0028 0248 0010 312rdquo 2190 2210 126 0554 0925 0253

90 0636 0093 0427 0035 0279 0013 0209 0006 2470 2770 142 0692 1040 0319

100 0707 0114 0474 0043 0310 0015 0232 0007 4rdquo 2740 3400 158 0843 1160 0392

150 1060 0238 0711 0090 0464 0031 0349 0016 0272 0008 4110 7440 236 181 1740 0828

200 1410 0414 0948 0153 0619 0053 0466 0027 0362 0014 315 314 2330 1450

250 1760 0625 1190 0233 0774 0080 0581 0040 0453 0021 5rdquo 2900 2200

300 2120 0889 1420 0324 0930 0112 0698 0055 0543 0030 0352 0011 3480 3070

350 2470 1190 1660 0438 1080 0150 0815 0074 0634 0040 0411 0014 6rdquo 4070 4160

400 2830 1550 1900 0563 1240 0195 0935 0096 0724 0051 0469 0018 0341 0007 4650 5380

450 3180 1930 2130 0707 1390 0242 1050 0120 0815 0063 0528 0022 0366 0009 5230 6790

500 3540 2380 2370 0867 1550 0298 1170 0147 0902 0076 0587 0027 0407 0011

550 3880 2870 2610 1040 1700 0354 1280 0174 0991 0092 0645 0032 0447 0013

600 4240 3390 2840 1220 1860 0418 1400 0204 1090 0110 0704 0037 0488 0015

650 4590 5560 3080 1420 2010 0486 1510 0239 1180 0127 0762 0043 0529 0017

700 4950 4550 3320 1650 2170 0560 1630 0275 1270 0146 0821 0050 0569 0020

750 5300 5200 3560 1880 2320 0637 1750 0314 1360 0164 0879 0057 0610 0023

800 3790 2130 2480 0721 1860 0354 1450 0185 0936 0064 0651 0025 8rdquo

850 4030 2390 2630 0805 1980 0395 1540 0209 1000 0072 0692 0028 0403 0007

900 2790 0901 2090 0438 1630 0232 1050 0008 0732 0032 0427 0008

950 2940 1000 2210 0486 1720 0258 1120 0087 0773 0036 0451 0010

1000 3100 1110 2320 0534 1810 0284 1170 0096 0814 0039 0474 0011

1100 3410 1290 2560 0643 1990 0341 1290 0116 0895 0047 0522 0012

1200 3720 1 580 2800 0763 2170 0403 1410 0135 0974 0055 0569 0015

1300 3030 0890 2360 0473 1530 0157 1060 0063 0616 0017

1400 3260 1020 2540 0544 1640 0183 1140 0072 0664 0019

1500 3490 1170 2720 0617 176 0208 1220 0083 0712 0022

1600 3720 1330 2890 0697 1880 0234 1300 0093 0758 0025

1700 10rdquo 3950 1490 3080 0784 1990 0260 1380 0104 0806 0028

1800 0546 0010 3260 0875 2110 0290 1470 0116 0854 0032

1900 0575 0012 3440 0965 2230 0323 1550 0129 0901 0034

2000 0606 0012 3617 1060 2340 0356 1630 0143 0946 0037

2200 0667 0015 3980 1280 2580 0429 1790 0172 1050 0045

2400 0727 0017 12rdquo 2820 0507 1950 0200 1140 0053

2600 0788 0021 0563 0009 3050 0589 2110 0234 1230 0061

2800 0848 0023 0606 0010 14rdquo 3280 0676 2280 0268 1330 0070

3000 0909 0026 0649 0011 0532 0007 3520 0773 2440 0306 1420 0080

3500 1060 0035 0760 0015 0620 0009 4110 105 2850 0416 1660 0108

4000 1210 0045 0866 0020 0709 0012 16rdquo 4690 135 3250 0532 1900 0139

4500 1360 0056 0976 0025 0798 0015 0606 0007 3660 0674 2130 0173

5000 1520 0069 1080 0029 0886 0018 0674 0009 4070 0822 2370 0212

6000 1810 0097 1290 0042 1070 0026 0808 0013 18rdquo 4880 1160 2850 0301

7000 2120 0130 1510 0055 1240 0035 0940 0017 0741 0010 5690 1580 3310 0403

8000 2420 0168 1730 0072 1420 0045 1080 0022 0847 0012 6510 2050 3790 0525

9000 2730 0210 1950 0091 1600 0056 1210 0027 0954 0015 4270 0659

10000 3030 0257 2170 0111 1770 0067 1350 0033 1050 0019 4740 0801

Legend Q Water Flow Rate (Lpm) V Velocity (ms) Y Specific Pressure Drops (bar100m)Water at ambient temperature in straight pipe

SPECIfIC PRESSURE DROPS fOR WATER fLOW IN CLEAN STEEL PIPE SCH 10S

Q V Y V Y V Y V Y V Y V Y V Y V Y [lm] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m]

PIPI

NG

77wwwpnr-nozzlescomCTG SH 07 EU

SPECIfIC PRESSURE DROPS fOR WATER fLOW IN CLEAN STEEL PIPE SCH 40S

Legend Q Water Flow Rate (Lpm) V Velocity (ms) Y Specific Pressure Drops (bar100m)Water at ambient temperature in straight pipe

18rdquo 14rdquo

1 0458 0726 0251 0170 38rdquo 12rdquo

2 0918 2590 0501 0600 0272 0136 0170 0044 34rdquo

3 1380 5590 0752 1220 0407 029 0255 0091 0144 0023 1rdquo

4 1840 9570 1000 2090 0543 048 0340 0151 0192 0038 0120 0012

5 2290 14450 1250 3180 0679 070 0425 0223 0241 0057 0150 0017

6 1500 4460 0815 0980 0510 0309 0289 0077 0180 0024 114rdquo

8 2010 7360 1090 1690 0680 0524 0385 0129 0240 0041 0138 0011 112rdquo

10 1360 2520 0850 0798 0481 0193 0300 0061 0172 0015 0127 0008

15 2040 5370 1280 1690 0722 0403 0450 0124 0258 0032 019 0015

20 2rdquo 2720 9240 1700 2840 0962 0683 0600 0210 0344 0054 0254 0026

30 0231 0016 212rdquo 2550 6170 1440 1450 0900 0442 0517 0114 038 0053

40 0308 0027 0216 0010 3400 10720 1920 2500 1200 0758 0689 0193 0507 0091

50 0385 0039 0270 0017 2410 3830 1500 1140 0861 029 0634 0135

60 0462 0055 0324 0023 2890 5410 1800 1610 103 0400 0761 0187

70 0539 0098 0378 0031 3rdquo 3370 7270 2100 2150 1210 0541 0888 0248

80 0616 0092 0432 0039 028 0014 312rdquo 2400 2760 1380 0690 1010 0315

90 0693 0115 0486 0048 0315 0017 0235 0008 2700 3470 1550 0862 1140 0397

100 0770 0141 0540 0059 035 002 0261 0010 4rdquo 3000 4250 1720 1050 1270 0488

150 1150 0295 0810 0125 0524 0042 0392 0021 0304 0011 4500 9300 2580 2260 1900 1030

200 1540 0512 1080 0212 0699 0072 0523 0036 0405 0019 3440 3910 2540 1810

250 1920 0773 1350 0322 0874 0108 0653 0053 0507 0028 5rdquo 3170 2740

300 2310 1100 1620 0449 105 0152 0784 0074 0608 004 0387 0014 3800 3820

350 2690 1470 1890 0606 122 0203 0915 0099 0710 0053 0452 0018 6rdquo 4440 5180

400 3080 1920 2160 0780 14 0264 1050 0128 0811 0068 0516 0023 0375 0009 5070 6690

450 3460 2390 2430 0979 157 0328 1180 0161 0912 0084 0581 0028 0402 0012 5710 8450

500 3850 2950 2700 1200 175 0403 1310 0196 1010 0101 0646 0034 0447 0014

550 4230 3550 2970 1440 192 0479 1440 0232 1110 0122 0710 0041 0491 0016

600 4620 4200 3240 1690 2100 0566 1570 0273 1220 0146 0775 0047 0536 0019

650 5000 6880 3510 1970 2270 0658 1700 0319 1320 0169 0839 0055 0581 0022

700 5390 5630 3780 2280 2450 0759 1830 0368 1420 0194 0904 0063 0625 0025

750 577 6440 4050 2600 2620 0863 1960 042 1520 0218 0968 0072 067 0029

800 4320 2950 2800 0977 2090 0473 1620 0246 1030 0081 0715 0032 8rdquo

850 4590 3310 2970 1090 2220 0528 1720 0277 1100 0091 076 0036 0439 0009

900 3150 1220 2350 0585 1820 0308 1160 0100 0804 0041 0465 001

950 3320 1350 248 0649 1930 0342 1230 0111 0849 0045 0491 0012

1000 3500 1500 261 0714 2030 0377 1290 0122 0894 0049 0516 0013

1100 3850 1750 2870 0860 2230 0452 1420 0147 0983 0059 0568 0015

1200 4200 2140 3140 1020 2430 0534 1550 0172 1070 0069 0620 0018

1300 3400 1190 2640 0627 1680 0200 1160 008 0671 0021

1400 3660 1370 2840 0722 1810 0232 1250 0091 0723 0024

1500 3920 1560 3040 0818 1940 0264 1340 0105 0775 0027

1600 4180 1780 3240 0924 2070 0297 1430 0118 0826 0031

1700 10rdquo 4440 1990 3450 1040 2190 0331 1520 0132 0878 0035

1800 0590 0012 3650 1160 2320 0369 1610 0147 0930 0039

1900 0622 0014 3850 1280 2450 041 1700 0163 0981 0042

2000 0655 0015 40500 1410 2580 0452 1790 0181 1030 0046

2200 0721 0018 4460 1700 2840 0545 1970 0217 1140 0056

2400 0786 0021 12rdquo 3100 0645 2140 0253 1240 0065

2600 0852 0025 0600 001 3360 0749 2320 0296 1340 0076

2800 0917 0028 0646 0012 14rdquo 3610 0859 2500 0339 1450 0087

3000 0983 0032 0692 0013 0573 0008 3870 0982 268 0387 1550 0099

3500 1150 0043 0810 0018 0668 0011 4520 1330 3130 0526 1810 0134

4000 1310 0055 0923 0023 0764 0014 16rdquo 5160 1720 3570 0673 2070 0172

4500 1470 0068 1040 0029 0860 0018 0658 0009 4020 0853 2320 0214

5000 1640 0084 1150 0034 0955 0022 0731 0011 4470 1040 2580 0262

6000 1960 0118 1380 0049 1150 0031 0877 0016 18rdquo 5360 1470 3100 0373

7000 2290 0158 1610 0065 1340 0042 1020 0021 0808 0012 6250 2000 3610 0499

8000 2620 0204 1840 0085 1530 0054 1170 0027 0924 0015 7150 2590 4130 065

9000 2950 0256 2080 0107 1720 0067 1310 0033 1040 0019 4650 0816

10000 3280 0313 2310 0130 1910 0081 1460 0041 1150 0023 5160 0992

Q V Y V P V Y V Y V Y V Y V Y V Y [lm] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m]

PIPI

NG

78 wwwpnr-nozzlescom CTG SH 07 EU

10 75 12 038 4 11 50

15 80 12 044 4 11 55

20 90 14 065 4 11 65

25 100 14 082 4 11 75

32 120 14 117 4 14 90

40 130 14 139 4 14 100

50 140 14 162 4 14 110

65 160 14 214 4 14 130

80 190 16 343 4 18 150

100 210 16 422 4 18 170

125 240 18 611 8 18 200

150 265 18 751 8 18 225

175 295 20 1020 8 18 255

200 320 20 1230 8 18 280

250 375 22 1850 12 18 335

300 440 22 2550 12 22 395

350 490 22 3180 12 22 445

400 540 22 3850 16 22 495

450 595 22 4700 16 22 550

500 645 24 6040 20 22 600

PN 6 (UNI 6091)

ND 6 (DIN 2527) DN Flange Holes

D t W N Oslash a

90 14 063 4 14 60

95 14 071 4 14 65

105 16 101 4 14 75

115 16 122 4 14 85

140 16 180 4 18 100

150 16 209 4 18 110

165 18 287 4 18 125

185 18 365 4 18 145

200 20 461 8 18 160

220 20 565 8 18 180

250 22 812 8 18 210

285 22 1050 8 22 240

315 24 1410 8 22 270

340 24 1620 12 22 295

405 28 2510 12 25 355

460 28 3520 12 25 410

520 30 4820 16 25 470

580 32 6350 16 30 525

640 32 7720 20 30 585

715 34 1020 20 33 650

PN 16 (UNI 6093)

ND 16 (DIN 2527) Dimensions Holes

D t W N Oslash a

ND 10 (DIN 2527) Dimensions Holes

D t W N Oslash a

90 14 063 4 14 60

95 14 071 4 14 65

105 16 101 4 14 75

115 16 122 4 14 85

140 16 180 4 18 100

150 16 209 4 18 110

165 18 287 4 18 125

185 18 365 4 18 145

200 20 461 4 18 160

220 20 565 8 18 180

250 22 812 8 18 210

285 22 1050 8 22 240

315 24 1410 8 22 270

340 24 1650 8 22 295

395 26 2410 12 22 350

445 26 3080 12 22 400

505 26 3960 16 22 460

565 26 4960 16 25 515

615 26 5860 20 25 565

670 28 7530 20 25 620

PN 10 (UNI 6092)

LegendaDN Nominal DiameterD Flange External Diametert Flange ThicknessW Flange WeightN Hole NumberOslash Hole Diametera Hole axis

PIPING Flange dimensionsPI

PIN

G

Blind flanges to DIN 2527

79wwwpnr-nozzlescomCTG SH 07 EU

LegendDN Nominal DiameterD Flange External Diametert Flange ThicknessW Flange WeightN Hole NumberOslash Hole Diametera Hole axis

12rsquorsquo 889 111 08 4 159 603

34rsquorsquo 984 127 09 6 159 698

1rsquorsquo 1079 143 10 4 159 794

114rsquorsquo 1175 159 13 4 159 889

112rsquorsquo 1270 175 14 4 159 984

2rsquorsquo 1524 190 18 4 190 1206

212rsquorsquo 1778 222 32 4 190 1397

3rsquorsquo 1905 238 41 4 190 1524

312rsquorsquo 2159 238 59 8 190 1778

4rsquorsquo 2286 238 77 8 190 1905

5rsquorsquo 2540 238 91 8 222 2159

6rsquorsquo 2794 254 118 8 222 2413

8rsquorsquo 3429 286 204 8 222 2984

10rsquorsquo 4064 302 318 12 254 3619

12rsquorsquo 4826 317 500 12 254 4318

14rsquorsquo 5334 349 600 12 286 4762

16rsquorsquo 5969 365 770 16 286 5397

18rsquorsquo 6350 397 950 16 317 5778

20rsquorsquo 6985 429 1230 20 317 6350

22rsquorsquo 7493 460 1510 20 349 6921

ANSI 150 lb DN Flange Holes

D t W N Oslash a

952 143 10 4 159 667

1175 159 14 4 190 825

1238 175 18 4 190 889

1333 206 27 4 190 984

1556 222 36 4 222 1143

1651 254 45 8 190 1270

190S 286 68 8 222 1492

209S 317 91 8 222 1683

2286 349 132 8 254 1841

2540 349 150 8 254 2000

2794 381 200 8 254 2349

3175 413 277 12 254 2699

3810 476 450 12 286 3302

4445 540 700 16 317 3873

5207 571 103 16 349 4508

5842 603 141 20 349 5143

6477 635 181 20 381 5715

7112 667 228 24 381 6286

7747 698 282 24 413 6858

8382 730 311 24 444 7429

ANSI 400 lb Dimensions Holes

D t W N Oslash a

ANSI 300 lb Dimensions Holes

D t W N Oslash a

952 143 10 4 159 667

1175 159 14 4 190 825

1238 175 18 4 190 889

1333 190 27 4 190 984

1556 206 32 4 220 1143

1651 222 36 8 190 1270

1905 254 54 8 222 1492

2095 286 73 8 222 1683

2286 302 95 8 222 1841

2540 317 122 8 222 2000

2794 349 159 8 222 2349

3175 365 227 12 222 2699

3810 413 370 12 254 3302

4445 476 580 16 286 3873

5207 508 840 16 317 4508

5842 540 1070 20 317 5143

6477 571 1390 20 349 5715

7112 603 3900 24 349 6286

7747 635 2230 24 349 6858

8382 667 2700 24 413 7429

PIPING Flange dimensions

PIPI

NG

flanges to ANSI norms

80 wwwpnr-nozzlescom CTG SH 07 EU

PIPI

NG

Sieves are used both for determining the particle size distribution of a granular material and to filter solid particles in a liquid Normally the sieve is made with a fabric whose characteristic dimensions areL is the Opening Width (free passage)D is the Diameter of the wireP is the Pitch of the wireS is the Thickness of the fabricTo classify particle sizes there is some Sieve Series according to specific standardsthe most known are Tyler Sieve Series US Sieve Series UK Sieve SerieshellipThe Tyler mesh size indicates exactly the number of openings per linear inch of mesh

L[microm]

TYLER Sieve[Mesh No]

ASTM E11 Sieve[Mesh No]

BS 410 Sieve[Mesh No]

DIN 4188 Sieve[mm]

5 2500 2500 0005

10 1250 1250 0010

15 800 800 0015

20 625 635 625 0020

22 0022

25 500 500 500 0025

28 0028

32 na 450 440 0032

36 0036

38 400 400 400

40 0040

45 325 325 350 0045

50 0050

53 270 270 300

56 0056

63 250 230 240 0063

71 0071

75 200 200 200

80 0080

90 170 170 170 0090

100 0100

106 150 140 150

112 0112

125 115 120 120 0125

140 0140

150 100 100 100

160 0160

180 80 80 85 0180

200 0200

In the german standard (DIN norm 4188) the Opening Width (L) is given in millimeters

PIPING Sieve size conversion chartPI

PIN

G

81wwwpnr-nozzlescomCTG SH 07 EU

L[microm]

TYLER Sieve[Mesh No]

ASTM E11 Sieve[Mesh No]

BS 410 Sieve[Mesh No]

DIN 4188 Sieve[mm]

212 65 70 72

250 60 60 60 0250

280 0280

300 48 50 52

315 0315

355 42 45 44 0355

400 0400

425 35 40 36

450 0450

500 32 35 30 0500

560 0560

600 28 30 25

630 0630

710 24 25 22 0710

800 0800

850 20 20 18

900 0900

1000 16 18 16 1000

1120 1120

1180 14 16 14

1250 1250

1400 12 14 12 1400

1600 1600

1700 10 12 10

1800 1800

2000 9 10 8 2000

2240 2240

2360 8 8 7

2500 2500

2800 7 7 6 2800

3150 3150

3350 6 6 5

3550 3550

4000 5 5 4 4000

4500 4500

4750 4 4 35

5000 5000

5600 35 35 3

6700 3 0265 in 1

8000 25 516 in na

Applicable standards areISO 565 (1987) ISO 3310 (1999) ASTM E 11-70 (1995)DIN 4188 (1977) BS 410 (1986) AFNOR NFX11-501 (1987)

Legend Q Water Flow Rate V Velocity P Pressure drop Pressure drop in bar per 100 meters of straight pipe (water at ambient temperature)

PIPING Sieve size conversion chart

PIPI

NG

Besides its main range of nozzles for industrial applications PNR manufactures a wide range of complementary products and systems to optimize the use of spray jets and fluids control in most of the modern industrial processes

PNR PRODUCT RANGE

CTG AC

CTG LS

CTG UG

CTG AZ

Complementary Products andAssembly FittingsA complete line of nipples clamps swivel joints and everything that helps you to assemble align and service your spraying systems quickly and easilyAir blowers mixing eductors filters clean-ing guns and lances hose reels steam heaters pressure tanks quick couplings to help you build up a professional system upgraded to the latest standards

Tank washing systemsA complete range from simple fixed washing heads to the two-axis heads from mushroom nozzles to fluid driven reaction heads up to the motor driven washing heads equipped with a pneu-matic or electric motorAll for the inside cleaning of industrial tanks according to the latest technology accessories included

Spray nozzles for industrial applicationsOne of the world most complete lines of nozzles for numberless industrial appli-cations Nozzles with a wide openings range various types of vanes several spray patterns anti-clog design available in small and big dimensions and made in many food-grade materials like PFTE and Stainless Steel 316L with threaded and flanged connections

Air assisted atomizersUltrasonic classic and automatic atomiz-ers for the finest atomization in any insus-trial process High quality machining and strict quality control ensure your systems top professional resultsProgramming and control panels for an easy assembly of complete humidification systems

CTG SP

CTG PM

CTG SW

CTG LN

Spraydry nozzlesAir assisted or hydraulic high pressure ato-mizers made in high-quality metal alloys or tungsten carbideA complete line of nozzles for the moder-nization of existing facilities at competitive prices To ensure highly accurate results and a long service life these nozzles are manufactured with the finest materials and technologically advanced machines

Paper mill productsA line of products specifically designed for perfect results on paper mill machines including disc nozzles patented for self-cleaning filters flat jet nozzles with orifices in sapphire ruby and ceramic oscillating tubes equipped with a computer driven motor

Steelwork nozzlesA complete line of nozzles for steelwork applications including continuous casting air atomizers and conventional nozzles descaling nozzles for high pressure sys-tems dovetail tips for cylinders cooling and high capacity flanged nozzles for coke quenching

Gas cooling lancesSpillback or air assited lances for gas coo-ling in steelworks cement plants and other industrial applicationsWe can supply spare parts upgrade your plant and even supply a complete PLC driven system to enhance the towers per-formances to the highest efficiency level allowed by today technology

wwwpnr-nozzlescomCTG SH 07 EU

CTG SH 07 EUwwwpnr-nozzlescom

STAM

PATO

IN E

U 09

09

copy B

ellamp

Tany

Our products are distributed through

We are also represented in

PNR AmericaPNR Asia

PNR BalticPNR Benelux

PNR ChinaPNR Czech Republic

PNR DeutschlandPNR France

PNR ItaliaPNR Mexico

PNR UK

ArgentinaAustraliaAustriaBrazil

BulgariaCanada

ChileCroatia

DenmarkFinlandGreece

IndiaIndonesia

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MalaysiaNorway

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Page 7: SPRAY CTG SH 07 EU ENGINEERING HANDBOOK

7wwwpnr-nozzlescomCTG SH 07 EU

GENE

RAL

INFO

RMAT

ION

GENERAL INFORMATION Metric and decimal equivalents of fractions of an inch

5wwwpnr-nozzlescom

METRIC AND DECIMAL EQUIVALENTS OF FRACTIONS OF ONE INCH

mm FRACTIONS OF ONE INCH INCHES

03969 164 0015625079375 132 00312511906 364 00468715875 116 00625 19844 564 0078125238125 332 009375 27781 764 0109375 31750 18 012535719 964 014062396875 532 01562543656 1164 017187547625 316 1364 0187551594 0203125555625 732 02187559531 1564 023437563500 14 02567469 1764 0265625 714375 932 02812575406 1964 029687 79375 516 0312583344 2164 0328125873125 1132 03437591281 2364 035937595250 38 037599219 2564 0390625

1031875 1332 040625107156 2764 042187111125 716 04375115094 2964 04531251190625 1532 046875123031 3164 0484375127000 12 05130969 3364 05156251349375 1732 053125138906 3564 054687142875 916 05625146844 3764 05781251508125 1932 059375154781 3964 0609375 158750 58 0625 162719 4164 064062 1666875 2132 065625 170656 4364 0671875 174625 1116 06875 178594 4564 0703125 1825625 2332 071875 186531 4764 0734375 190500 34 075194469 4964 07656251984375 2532 078125202406 5164 0796875206375 1316 08125210344 5364 08281252143125 2732 084375218280 5564 085937222250 78 0875226219 5764 08906252301875 2932 090625 234156 5964 0921875238125 1516 09375242094 6164 09531252460625 3132 096875250031 6364 0984375254000 1 10

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METRIC AND DECIMAL EQUIVALENTS OF FRACTIONS OF ONE INCH

mm FRACTIONS OF ONE INCH INCHES

03969 164 0015625079375 132 00312511906 364 00468715875 116 00625 19844 564 0078125238125 332 009375 27781 764 0109375 31750 18 012535719 964 014062396875 532 01562543656 1164 017187547625 316 1364 0187551594 0203125555625 732 02187559531 1564 023437563500 14 02567469 1764 0265625 714375 932 02812575406 1964 029687 79375 516 0312583344 2164 0328125873125 1132 03437591281 2364 035937595250 38 037599219 2564 0390625

1031875 1332 040625107156 2764 042187111125 716 04375115094 2964 04531251190625 1532 046875123031 3164 0484375127000 12 05130969 3364 05156251349375 1732 053125138906 3564 054687142875 916 05625146844 3764 05781251508125 1932 059375154781 3964 0609375 158750 58 0625 162719 4164 064062 1666875 2132 065625 170656 4364 0671875 174625 1116 06875 178594 4564 0703125 1825625 2332 071875 186531 4764 0734375 190500 34 075194469 4964 07656251984375 2532 078125202406 5164 0796875206375 1316 08125210344 5364 08281252143125 2732 084375218280 5564 085937222250 78 0875226219 5764 08906252301875 2932 090625 234156 5964 0921875238125 1516 09375242094 6164 09531252460625 3132 096875250031 6364 0984375254000 1 10

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METRIC AND DECIMAL EQUIVALENTS OF FRACTIONS OF ONE INCH

mm FRACTIONS OF ONE INCH INCHES

03969 164 0015625079375 132 00312511906 364 00468715875 116 00625 19844 564 0078125238125 332 009375 27781 764 0109375 31750 18 012535719 964 014062396875 532 01562543656 1164 017187547625 316 1364 0187551594 0203125555625 732 02187559531 1564 023437563500 14 02567469 1764 0265625 714375 932 02812575406 1964 029687 79375 516 0312583344 2164 0328125873125 1132 03437591281 2364 035937595250 38 037599219 2564 0390625

1031875 1332 040625107156 2764 042187111125 716 04375115094 2964 04531251190625 1532 046875123031 3164 0484375127000 12 05130969 3364 05156251349375 1732 053125138906 3564 054687142875 916 05625146844 3764 05781251508125 1932 059375154781 3964 0609375 158750 58 0625 162719 4164 064062 1666875 2132 065625 170656 4364 0671875 174625 1116 06875 178594 4564 0703125 1825625 2332 071875 186531 4764 0734375 190500 34 075194469 4964 07656251984375 2532 078125202406 5164 0796875206375 1316 08125210344 5364 08281252143125 2732 084375218280 5564 085937222250 78 0875226219 5764 08906252301875 2932 090625 234156 5964 0921875238125 1516 09375242094 6164 09531252460625 3132 096875250031 6364 0984375254000 1 10

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LIQUID SPRAY AND SPRAY NOZZLESLiquid spray 9Spray nozzle types 11Spray nozzle coding 13Computerized fluid dynamics 14Spray generation 15Droplet spectrum 16Nozzle flow rate 19Spray angle 21Spray distribution 23Influence of liquid viscosity 27Influence of liquid specific gravity 29Jet impact 30Pressure drop through a nozzle 32

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A nozzle is a device which converts the energy from a fluid into velocity of the spray dropletsApplications in many industrial processes are numberless with spray nozzles being very often a critical component in determining the final quality of the product or the efficiency of the processFor this reason the available nozzle range types for industrial applications can be found in PNR nozzle catalogue as well as a concise but complete information about the most important parameters which can give a technical definition of a spray and its qualityWe have grouped in the following the most useful formulas for designing a spray system showing the influence of the different factors which can affect the process of sprayingMore information about the working life of a nozzle and the best suited material for a given purpose can be found at page 17 of this publication AlI the following data when not otherwise specified refer to spraying water at 15deg C

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LIQUID SPRAY AND SPRAY NOZZLES Liquid spray

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LIQUID SPRAY AS A PROCESS

The process of spraying a liquid can be described as composed of two phases namely

1 Breaking up the liquid into separated drops2 Directing the liquid drops onto a surface or an object to achieve the desired result

The above two phases are normally performed by the types of nozzles being used in industrial processes at the same time by means of different techniques which shall be illustrated in the followingThe continuous progress in the manufacturing techniques in recent years has requested the nozzle manufacturer to make available to the industry an always more complete range of spray nozzle types to perform the different processes in a more efficient wayIt is the interest of the engineer using spray nozzles in manufacturing processes to become familiar with the different types of nozzles which are available today and with their individual characteristics in order to be able to choose the nozzle which performs with the highest possible efficiency on a given application

Spraying a liquid through a spray nozzle can serve different purposes among which the most important are the following

1 Cooling by means of heat transfer between the product itself and the liquid running on its surface2 Washing where the water directed onto the product takes away dirt or undesired substances from the product surface3 Humidifying with sprays carrying very little liquid quantities to the product surfaceinto a chamber or into a room4 Metering the desired liquid quantity in a unit of time into the product being handled5 Applying a product on a surface as in the case of spray painting or surface pre-treatment before painting6 Increasing the liquid surface to speed up heat transfer processes or chemical reactions and many others in numerous applications throughout modern industry

It is self evident that the best results for every application are only obtained when the right choices in terms of nozzle type flow value spray angle drop dimensions and nozzle material are madeThe purpose of the following pages is to give the reader the basic knowledge which is needed to properly select a spray nozzle for a given application

Spray nozzles

a spray nozzle is a device which makes use of the pressure energy of a liquid to increase its speed through an orifice and break it into dropsIts performances can be identified and described precisely so that the design engineer can specify exactly the spray nozzle required for a given process

The relevant characteristics which identify the performances of a nozzle are the following

1 The liquid flow delivered as a function of the nozzle feed pressure2 The opening angle of the produced spray3 The nozzle efficiency as the ratio between the energy of the spray and the energy used by the nozzle4 The evenness of the flow distribution over the target5 The droplet size distribution of the spray6 The jet impact of the spray

The above characteristics will be discussed in the following pages in connection with the different nozzle types

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TECHNIQUES FOR SPRAY PRODUCTION

Many different techniques can be used to produce a spray and most of them are used today for nozzles to be applied in industrial processes Based on the different techniques the following nozzle types can be used in industrial applications to generate a liquid spray

1 Pressure nozzlesThis is the simplest type of nozzles where an orifice is opened into a chamber where the liquid to be sprayed is fed under pressure A spray is produced through the orifice with spray pattern flow rate and spray angle depending upon the orifice edge profile and the design of the inside pressure chamberTypical pressure nozzles are the flat jet nozzles series GA J GX and GY

2 Turbulence nozzlesIn these nozzles the liquid moving towards the chamber preceding the orifice is given a rotational speed component so as to open up in a conical shape as soon as it leaves the orifice edge because of centrifugal force Based on the nozzle design and the technique used to generate the rotational speed the drops produced can be confined to the cone outer surface (hollow cone spray) or be evenly distributed to fill the entire volume of the cone (full cone spray)

3 Impact nozzlesHere the desired spray shape is obtained producing an impact of the liquid jet onto a properly designed surface The liquid jet is subsequently changed into a fluid lamina and then broken into drops with the desired spray pattern after leaving the nozzle edge

4 Air assisted atomizersFine and very fine sprays can be obtained by means of air assisted atomizers working upon various different principles More detailed information about air assisted atomizing can be found in our Catalogue Air assisted atomizers (ordering code CTG AZ18)

LIQUID SPRAY AND SPRAY NOZZLES Liquid spray

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FULL CONE PATTERN

In a full cone spray the droplets are distributed into a volume which is limited by a cone having its origin point at the nozzle orifice Such spray pattern is commonly used in a large variety of industrial processes since it is the one which allows to distribute in an even way the water flow onto a surface the full cone spray pattern is therefore useful as a typical example to evenly spray cooling liquid on a still surface Another typical use is to distribute liquid droplets within a certain volume like for example evenly distributing water droplets in the inside volume of a cooling tower

Because of the wide number of processes performed by means of full cone nozzles the original shape has evolved into a range of specialised types where the full cone spray pattern or a pattern similar to a full cone one is obtained by different techniques

Standard full cone (turbulence nozzle)These nozzles use a specially shaped vane placed at the nozzle inlet to give a rotational speed to the fluid flowing through the nozzleBecause of the rotational speed of the fluid water exiting the nozzle orifice is subjected to centrifu-gal force and opens up in the shape of a full coneThe extent of the angle of the cone is a function of both exit speed (created from the inlet pressure) and the internal design of the nozzle It can vary in practice from 15deg to 120deg

These nozzles can be also produced as square full cone nozzles where the square shape of the pyramidal spray is obtained by a special design of the outlet orificeTwo important details have to be noted from the system designer when using these type of noz-zles

the spray angle is measured on the side of the square sectionbullthe square section of the spray rotates within the distance from the nozzle orifice to the bulltarget area

Spiral full cone (deflection nozzle)This is not properly a full cone but rather a continuous liquid curtain evolving with the shape of a spiral inside a conical volume The disadvantage of a scarcely even distribution is compensated by an exceptionally good resistance to plugging which makes this nozzle the best choice in those applications where safety or system reliability are the prime concern eg fire fighting systems

Multiple full cone (turbulence nozzle air atomizer)This spray pattern is used in two cases that is

1 When a wide spray angle is to be reached with nozzles which inherently can only produce a narrow one or in such cases where small size droplets and rather high capacities are required Therefore several nozzles are grouped in a cluster with different spray directions the resulting spray pattern occurs from the additional group of single nozzle sprays and the droplet size of the spray remains the same as one of single nozzle It must be noted that a smaller nozzle will normally make smaller drops as compared to a larger size nozzle of the same type operating under the same conditions

2 When it is necessary to obtain a wide angle jet using nozzles which inherently deliver a lim-ited angle spray In the case of a wide angle air atomizer for example the droplet distribution is obviously not homogeneous and the result is rather a number of small angle sprays with different directions but still the liquid is atomized towards all the parts of the volume to be treated

LIQUID SPRAY AND SPRAY NOZZLES Spray nozzle types

Standard full cone

Spiral full cone

Multiple full cone

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FLAT JET SPRAY PATTERN

In a flat jet spray the liquid droplets are sprayed in the shape of a flat liquid layer with different thickness according to the principle used to generate the spray A flat jet spray nozzle serves the purpose of spraying onto a surface or an object moving in a transverse direction with respect to the one of the jet surface a typical example being the nozzles in a car washing tunnel The vast majority of flat spray nozzles used in the industry work according to one of the following principles

In line flat jet (pressure nozzle)This is the general purpose flat jet nozzle where the liquid enters the nozzle in line with the axis length and is fed to a pressure chamber from where it is ejected through the nozzle orifice Flow value and spray angle are determined respectively from the orifice cross section and the orifice edge profile

In line straight jet (pressure nozzle)These nozzles can be considered a special kind of flat jet nozzle with naught degree spray angle They are designed to produce a sharp stable stream with powerful impact on a given point and serve normally to perform cleaning processes or to cut soft materials

Spoon flat jet (deflection nozzle)In this type of nozzle the liquid is fed under pressure to a round outlet orifice and then deflected onto a smooth profiled surface so as to assume a flat jet shape This sophisticated design is of advantage since it offers a stronger jet impact using the same feed pressureHigher efficiency comes from the very little energy required to just change the direction of the liquid flow this being the only energy required to generate the flat jet

HOLLOW CONE SPRAY PATTERN

A hollow cone spray pattern consists of droplets concentrated onto the outer surface of a conical shape volume with no droplets contained in the inside of the conical jet shape These nozzles are normally used for smoke washing or gas cooling applications in several industrial processes

Hollow cone (turbulence nozzle)These nozzles use a tangential injection of liquid into a whirling chamber to generate centrifugal forces which break up the liquid vein as soon as it leaves the orifice Precisely designed orifice profiles making use of the Coanda effect provides the ability to obtain very large spray angles

Hollow cone (deflection nozzle)A hollow cone can also be obtained taking a liquid flow to change direction onto a properly designed surface in order to break the liquid into droplets and distributing them as a hollow cone spray patternThis kind of nozzle is mainly used for applications in dust control and fire fighting systems

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PNR CODING SYSTEM

As any other industrial product spray nozzles need to be precisely identified by means of a code in order to avoid mistakesPNR coding system has been designed with the following requirements in mind

Codes must be easily processed by a computer in ascending orderbullCodes must describe completely the product without any need for additional descriptionbullCodes must show to the user the basic specifications of the nozzle in order to ease the search in the cataloguebull

We have therefore determined our coding system described as follows

LIQUID SPRAY AND SPRAY NOZZLES Spray nozzle coding

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AA U X YB312 305

Thread type or other connection

Special features

Nozzle material code (see below)

The three digits give the nozzle capacity in lpm at 3 bar according to rank value

Rank of flow value see table below

Nozzle spray angle see table below

Nozzle type as described in the catalogue pages shown in ascending order

Nozzle tables report on a blue background the nominal flow value measured at 30 barFlow values at different pressures have been calculated

These codes serve as an indication onlyBased on different types of nozzles their significance can occasionally be different

CAPACITY RANK

Rank Flow digits Actual flow (lmin)

0 0 490 049

1 1 490 490

2 2 490 490

3 3 490 490

4 4 490 4900

SOME SPRAY ANGLE CODES (DEGREES)

A = 0 L = 40 T = 80

B = 15 M = 45 U = 90

C = 20 N = 50 J = 110

D = 25 Q = 60 W = 120

F = 30 R = 65 Y = 130

H = 35 S = 75 Z = 180

A1 Carbon steel D6 Glassfibre reinforced PP L2 Incolloy 825

A2 High speed steel D7 High density polyethilene L8 Hastelloy C276

A8 Zinc coated steel D8 Polyvinylidenefluoride (PVDF) P6 Acr But Styrene (ABS)

A9 Nickel coated steel E0 EPDM P8 EPDM 40 Shore

B1 AISI 303 Stainless steel E1 Polytetrafluorethylene (PTFE) T1 Brass

B2 AISI 304 Stainless steel E2 PTFE (25 glassfibers) T2 Brass chrome plated

B21 AISI 304 L Stainless steel E31 Acetalic resin (POM) T3 Copper

B3 AISI 316 Stainless steel E7 Viton T5 Bronze

B31 AISI 316 L Stainless steel E8 Synthetic rubber (NBR) T8 Brass nickel plated

C2 AISI 416 Stainless steel hardened F5 Ceramic T81 Brass electroless nickel plated

D1 Polyvinylchloride (PVC) F31 Ruby insert 303 body V1 Aluminum

D2 Polypropylene (PP) G1 Cast iron V7 Aluminum electroless n plated

d3 Polyamide (PA) H1 Titanium

D5 Talcum filled Polypropylene L1 Monel 400

NOZZLE MATERIAL CODES

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LIQUID SPRAY AND SPRAY NOZZLES Computerized fluid dynamics

The customers demand for an always higher efficiency requires to use not only the best tooling but in addition control instruments and design methods always more sophisticated like for example new software for obtaining the velocity distribution of a fluid flowing through a conduit

These software programs require that the geometry of the inner con-duit to be geometrically defined and in addition the process conditions ( pressure temperature fluid capacity ) and the fluid properties ( specific weight viscosity ) to be Introduced

Based on the above data it is pos-sible to obtain a very precise dis-tribution for the velocity value in each single point of the conduit both under numeric form and flow diagramsThese Information make it possi-ble as an example to minimize the flow turbulence and consequently to Increase the nozzle efficiency through an increase in the fluid exit velocityThis is of basic Importance for some kind of nozzles for example those nozzles required to supply an high impact jet when performing descal-ing processes in a rolling millBy trial and error it is also possible to eliminate problems like jet Instability or cavitation

The overall process efficiency in the flow path before the nozzle can also be considered which often results into the design of geometry modifi-cation or the Introduction of special flow improving profiles along the conduit

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The diagram on the right shows the idealization of the process generating the droplets while the water jet exiting the nozzle is breaking up The theoretical model whose exactitude seems to be confirmed by scientific research considers that the liquid flowing through the nozzle and past the orifice edge evolves into a liquid lamina This lamina because of instability induced by aerodynamic forces breaks up first into elongated ligaments more or less cylindrical and later into droplets

Taking the above process as a guideline one can easily appreciate that the average droplet diameter is some what related to several factors like

1 The thickness of the lamina itself2 The evenness of the lamina 3 A steady flow and break up process

For what has been said above and limited to hydraulic nozzles the system designer looking for fine droplet sprays should consider that the following results can be expected

Impact nozzles best

Centrifugal hollow cone nozzles multiple full cone nozzles good

Turbulence nozzles fair

Centrifugal Vaneless full cones worst

The above choice is obviously based on the droplet generation process which changes from one nozzle type to another and allows to forecast which type is best fro the applicationAn additional consideration of interest is that the expected droplet size changes for the same type of nozzle with the nozzle size it is possible to generate smaller drops spraying the same water quantity at the same pressure using a greater number of smaller nozzles

In cases where energy requirements are not a problem or where a specified small droplet diameter is required the smal-lest droplets can be obtained by means of an air assisted atomizerHere the shear action of a high speed compressed air flow is used with several different techniques to obtain a value for SMD (Sauter Mean Diameter) of 50 microns and less

LIQUID SPRAY AND SPRAY NOZZLES Spray generation

Theoretical Mechanism of droplet generation

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SLIQUID SPRAY AND SPRAY NOZZLES Droplet spectrum

The atomization of a liquid by means of a compressible fluid like air steam or a gas is defined pneumatic two-phase or twin-fluid atomization Many industrial processes require the availability of finely atomized droplets and the techniques to produce atomized jets have been largely improved in the recent years In addition more sophisticated process techniques have incre-ased the demand for a precise definition about the characteristics of the spray and are now available to the design engineer Since many years PNR can supply upon request complete documentation containing test reports about the more interesting and additional information which are described below for all PNR products

Laser Interpherometer Test (By Pdpa)

PNR droplet size test reports are performed by means of a Laser Interpherometer (Phase Doppler Particle Analyzer) where two laser beams cross in a given point of the spray and define a test probe area Droplet flying through the probe area cause a light scatter which is picked up by the instrument receiver and processed through a computer in order to obtain relevant information about the spray characteristics

Report information

Report information is made of data printed on three pages where the first page contains the most interesting data which make possible to base process calculations upon precise data about spraying degrees process efficiency and jet behavior in operational ambiance These pages contain the Sauter Mean Diameter value whose knowledge is of special importance in heat exchange calculations about evaporative gas cooling processes since it gives the possibility of evaluating the exchange surface obtained by atomizing for a given liquid volume

The upper picture at page 18 referring to atomizing water by means compressed air shows two following histograms

bull Distribution curve of droplet diameter (micron)

bull Distribution curve of droplet velocities (mps)

and the below described values

bull Arithmetic Mean Diameter (D10)

bull Surface Mean Diameter (D20)

bull Volume Mean Diameter (D30)

bull Sauter Mean Diameter (D32)

ARITHMETIC MEAN DIAMETERThis is a diameter value which multiplied by the local num-ber of droplets in the sample equals the addition of alI droplets diameters

SURFACE MEAN DIAMETERThis is the diameter of such a droplet whose surface mul-tiplied by the total droplets number equals the sum of alI droplets surfaces

VOLUME MEAN DIAMETERThis is the diameter of such a droplet whose volume mul-tiplied by the total droplets number equals the sum of all droplets volumes

SAUTER MEAN DIAMETERThis is the diameter of such a droplet whose volumearea ratio equals the ratio between the sum of alI droplet volu-mes divided by the sum of alI droplet surfaces

D10 = Σ i ni di

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AttemptsDroplet number crossing probe area during test time This includes both validated and not validated droplet

Correct Count Criteria A mathematic correction is applied to validate droplets which cross Probe Area in a peripheral belt or to droplets without a perfect spherical shape so that alI validated droplets parameters are homogeneous (This correction is necessary so that there is direct proportionally between laser beam phase and droplet number diameter)

Number Density It is the number of droplets passing through probe area within test time

Probe areaThis is the area where the two laser beams are crossing so determining the probe area AlI droplets intersecting probe area are checked droplets which respect given parameters for shape are taken as valid droplets and make up the sample whose size and velocity parameters are reported

ValidationsDroplets accepted based on given shape parameters to make up for test sample

Velocity MeanDroplets distribution speed histogram (ms)

Volume Flow RateIt is the volume measured in cubic centimeter per second of the validated droplets making up for the sample

Volume FluxIt is the flow rate per specific area measured in cubic centimeter per second and square centimeter of the validated droplets making up the sample

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LIQUID SPRAY AND SPRAY NOZZLES Droplet spectrum

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SLIQUID SPRAY AND SPRAY NOZZLES Droplet spectrum

PNR can supply upon request complete documentation con-taining test reports about the aforementioned parameters and additional information for all PNR atomizersThe diagrams beside show the distribution of droplet diameters and droplet velocities of a spray under test as available to our customers

In the photo beside a test being performed at our laboratoriesWe use a computer driven laser interpherometer to detect and record the spray parameters while fluid capacities and feed pressure values are monitored through high precision instru-ments

IMPORTANT NOTE

The droplet size values measured with a PDPA instrumentation are representative of a well specified volume inside the spray and taking measurements in a different volume they can be considerably differentA correct spray droplet size characterization requires then not only tests being performed in several volumes within the spray but also that those measure volumes are selected with regard to the process the droplets are expected to performAs an example the droplet characterization of a spray should define how many volumes have been tested and which are the coordinates of each single test volume in relation to the nozzle orifice

Most of the times pretending to describe the droplet spectrum of a spray nozzle at a given pressure with only one diagram is therefore not correct

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In order to calculate the discharge flow rate from a given nozzle the Bernoulli law shall be used which says that the energy of a liquid flow remains unchanged over alI the sections of the flow Friction and turbu-lence losses are neglected which is reasonable for our purposes if the cal-culation is performed over two sections not too far away from each other

The Bernoulli law can be written as follows

Therefore if we consider two sections of the same pipe section A and section B we can write that the flow energy remains constant in the form

If we finally consider that the two above sections are taken immediately before and immediately after the nozzle outlet orifice being

ZA = ZB PB = 0 (PA is a differential pressure referred at the atmosphere pressure)

VA cong 0 negligible as compared to VB (for orifice diameter much smaller than the duct diameter)

we shall come to the formula

When we define a new constant k to include the value of the nozzle orifice outlet area (A) then we come to the following equation which says that for a nozzle spraying into a room at ambient pressure the exiting flow is proportional to the feed line pressure

Considering now two different pressure values for the same nozzle since k is a constant quantity we can write that

and derive from the above an equation that makes it possible to calculate the nozzle flow value at any given pressure value once the flow value at another pressure value is known

The energy of a given liquid flow crossing a given pipe section is composed of three parts namely

P Pressure energy of liquid particle per volume unit

1 ρV2 Kinetic energy of liquid particle per volume unit2ρgz Potential Energy of liquid particle per volume unit

Where ρ = density of liquid g = gravitational acceleration

z = height respect to one plane of reference V = liquid velocity

PA = 1 ρVB 2 rArr

2

K = Q rArr

PK =

Q1 = Q2 rArr

P1 P2

Q = A V rArr

Q = A x C x P rArr

1 P + 1 ρV2 + ρgz = E

2

VB = 2 PA rArr ρ

Q1 = P1

Q2 P2

3 V = C P

4 Q = K P

2 PA + 1 ρVA 2 + ρgzA = PB + 1 ρVB

2 + ρgzB 2 2

EXIT VELOCITY DEPENDS UPON PRESSURE

NOZZLE CAPACITY DEPENDS UPON PRESSURE

NOZZLE CAPACITYAT A DIFFERENT PRESSURE

5 Q2 = Q1 P2

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LIQUID SPRAY AND SPRAY NOZZLES Nozzle flow rate

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SLIQUID SPRAY AND SPRAY NOZZLES Nozzle flow rate

The Equation (5) has been obtained after having simplified the real problem neglecting several factors like for examplebullInmostofthepracticalapplicationcasestheflowisturbulentandnotlaminarbullFrictionlossestendtostronglyincreasewithliquidvelocitybullDependinguponthetypeofnozzleadifferentpercentageoftheavailableenergyisusedtobreakupthejetandgivethe

desired spray pattern and spray angle

For the above reason equation (5) gives reliable results if used in a limited pressure range around the pressure value where the flow rate is known with this pressure range depending upon the type of nozzleOur experience has shown that one can expect the error in the calculated value to be lower than +- 6 for pressure values ranging from 13 to 3 times the reference value

As an example a nozzle rated for 10 lpm at 3 bars would have according to equation (5) the following flow valuesa 1 bar 577 lpma 9 bar 173 lpmin real conditions it can be expected the flow rate values to beas high as 61 lpm a 1 baras low as 162 lpm a 9 barAbove considerations are to be used as a guideline only because of the many factors influencing real operations which have not been considered here for example liquid temperature viscosity and density

Possible percentage deviation from theoretical flow rate values

Also above mentioned percentage errors have to be understood for nozzles using part of the flow energy to produce wide angle spray patternsLower values can be expected for narrow angle nozzles impact nozzles and straight jet nozzles Laboratory tests and diagrams showing real flow rate values for each nozzles are used in practice when a precise result must be available

Nozzle discharge coefficient

With reference to equation (4) if we consider the pressure value to be equal to 1 (P = 1 bar) the flow rate of the nozzle becomes

K is a parameter widely used in the fire fighting industry

In some instances reference is made to the nozzle discharge coefficient or shortly to the nozzle coefficient to indicate the nozzle flow rate for a unitary pressure Of course for a given pressure value Pn the flow value will be

+ 6

+ 3

- 3

- 6

CAPACITY AT A GIVEN PRESSURE VALUEWHEN K KHOWN

NOZZLE CAPACITYFOR P=1 barQ = K P = K 1 = K

6 Qn = K Pn

21wwwpnr-nozzlescomCTG SH 07 EU

The spray angle is the opening angle which the nozzle jet of droplets forms at the moment when it leaves the nozzle orifice and it is one of the fundamental parameters for the choice of a given nozzleIn fact the amplitude of the spray angle determines in connection with the distance between the nozzle orifice and the target to be covered the spray coverage and the density of liquid sprayed with respect to the cover area See our Catalogue for description of the different nozzle spray patterns The table at the bottom of the page gives the theoretical spray width based on the nozzle spray angle and the distance from the nozzle orifice It is important to note that because of several factors like gravity forces and aerodynamic drag the spray angle value cannot be maintained but in in a limited distance normally up to 300 mm from the orifice For air assisted atomizers it is improper to use the term spray angle since no precise value can be measured Therefore the values given by Catalogues are to be intended as guidelines only

THEORETICAL SPRAY COVERAGE

at various distances from nozzle orifice

Spray 50 100 150 200 250 300 400 500 600 700 800 1000 Angle mm mm mm mm mm mm mm mm mm mm mm mm

15deg 13 26 40 53 66 79 105 132 158 184 211 263 25deg 22 44 67 89 111 133 177 222 266 310 355 443 30deg 27 54 80 107 134 161 214 268 322 375 429 536 35deg 32 63 95 126 158 189 252 315 378 441 505 631 40deg 36 73 109 146 182 218 291 364 437 510 582 728 45deg 41 83 124 166 207 249 331 414 497 580 663 828 50deg 47 93 140 187 233 280 373 466 560 653 746 933 60deg 58 116 173 231 289 346 462 577 693 808 924 1150 65deg 64 127 191 255 319 382 510 637 765 892 1020 1270 70deg 70 140 210 280 350 420 560 700 840 980 1120 1400 75deg 77 154 230 307 384 460 614 767 921 1070 1230 1530 80deg 84 168 252 336 420 504 671 839 1010 1180 1340 1680 90deg 100 200 300 400 500 600 800 1000 1200 1400 1600 2000 95deg 109 218 327 437 546 655 873 1090 1310 1530 1750 2180 100deg 119 238 358 477 596 715 953 1190 1430 1670 1910 2380 110deg 143 286 429 571 714 857 1140 1430 1710 2000 2290 2856 120deg 173 346 520 693 866 1040 1390 1730 2080 2430 2771 3464 130deg 215 429 643 858 1070 1290 1720 2150 2570 3002 3431 4289

WhereASCbull = Actual Spray CoverageTSCbull = Theoretical Spray CoverageASAbull = Actual Spray AngleTSAbull = Theoretical Spray AngleL bull = Spray Distances

TSC = 2 middot L middot ctan ( TSA )2

7

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S

LIQUID SPRAY AND SPRAY NOZZLES Spray angle

22 wwwpnr-nozzlescom CTG SH 07 EU

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SLIQUID SPRAY AND SPRAY NOZZLES Spray angle

Depending upon the nozzle design variations of feed pressure may have a great influence on the spray angle valueGenerally with increasing pressure turbulence full cone nozzles will produce narrower angles flat jet nozzles will show a wider angle spray while nozzles working on the deflection principle like spiral nozzles and K style flat jet nozzles will be less affected by pressure changesAll nozzles will not function properly with very low pressure values (from 05 bar down depending upon nozzle type ) with a marked decay in performance larger drops not well defined spray pattern lower spray angle values

The above pictures show spray angles for different nozzles and different pressure valuesShould your application strictly require that a given value of the spray angle is obtained under a given pressure value or pressure range of values please obtain a test report from our laboratories

Full cone nozze DDW 2235

Flat jet nozzleJCW 2245

Spiral nozzeECW 2230

Pressure 05 bar Pressure 05 bar Pressure 05 bar

Pressure 3 bar Pressure 3 bar Pressure 3 bar

Pressure 10 bar Pressure 10 bar Pressure 10 bar

Photo obtained with 120000s flashlight

picture 1

picture 4

picture 7

picture 2

picture 5

picture 8

picture 3

picture 6

picture 9

NotePicture 2 shows clearly the droplet generation mechanism as described at page 15

23wwwpnr-nozzlescomCTG SH 07 EU

Terms and definitions

A very important characteristic of a spray nozzle is a parameter called Spray Distribution which gives a precise information about how evenly the drops of the spray are distributed onto the area covered by the sprayIt is self understood that normally it is preferable to obtain the most even distribution possibleIn the past this was done through the visual examination of a diagram reporting the quantity of water contained for example in glass pipes aligned onto the spray coverage areaPnr has determined to obtain such a result in a scientific way through high technology instrumentation as shown in the pictures below showing one of our patternators and a typical distribution diagram

Now to the spray geometry and some definition letrsquos consider a nozzle with a capa-city Q at the pressure PAt every value for distance H which we call height of spray we can define a plane lsquonrsquo normal to the nozzle axis on which a line can define the intersection of the spray onto the planeThe area covered by the spray on the plane lsquonrsquo has a surface S depending from the following parametersa) Spray pattern Fb) Opening angle of the spray αc) Height of the spray H

We can then write S=S( F α H )

In case of a full cone nozzle S is a circle with diameter C and S = 0785 C2

The capacity of the nozzle flows through the surface S but each smaller area inside the surface S will probably have a different value for the flow passing through itWe introduce then the value of Specific Capacity q

1) Specific Capacity

The function q depends upon the single point (xy) in the section S and then

Determining the function q is however very expensive therefore in practice two different functions are used which give in most occurrences sufficient information

2) Linear Distribution

3) Angular distribution

part Qpart x

qx =

Diagram 1

q = limΔS 0

ΔQΔS

q = = f (x y H)part Qpart S

part Qpart φ

qφ =

ΔQ is the liquid flowing through a surface ΔSwhere ΔS is a fraction of the surface S

x and y are the local coordinates in the section planewhere H is the distance of the test surface from the nozzle orifice

partQ is the variation in capacitywhere partx is the variation of a generic linear coordinate

partQ is the variation in capacitywhere partφ is the variation of a generic angular coordinate

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LIQUID SPRAY AND SPRAY NOZZLES Spray Distribution

24 wwwpnr-nozzlescom CTG SH 07 EU

LIQUID SPRAY AND SPRAY NOZZLES Spray Distribution

Values extracted from these functions can characterize the spray and allow for drawing the diagrams defined as Distribution Curves

Analyzing the above curves it is possible to determine the type of water distribution along the spray coverage and the type of spray pattern like for example a full cone hollow cone flat or straight jet spray

Distribution measurement

The water distribution along the spray coverage is determined by means of an instrument called Patternator

A patternator consists of the following parts 1) Liquid collector2) Cell block3) Measure block4) Unloading block

The nozzle is above the instrument and it is orienta-ted in such a way the jet is collected into the upper liquid collectorThe liquid collector can be linear ( diagram 5 ) or round ( diagram 6 ) according to the test being runFrom the single parts in the collector the liquid is sent into the corresponding cells below (2)

The Measure block (3) determines the liquid content in each single cell then the unloading block (4) empties the instrument sending the liquid to the collection drain

There are two types of patternators

Analogic1 the different levels of liquid is visible through the transparent walls of the cells or pipes sometimes containing some kind of floating balls and a picture can be taken with a cameraDigital2 Delivering an automatic reading of the values in the cells the values being supplied as an electronic file from which a distribution curve can be easily obtained

Diagram 2 Linear distribution Diagram 3 Angular distribution

Diagram 4

Diagram 6 Circular collectorDiagram 5 Linear collector

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25wwwpnr-nozzlescomCTG SH 07 EU

LIQUID SPRAY AND SPRAY NOZZLES Spray Distribution

Normalizing distribution curve

The values obtained from the cells of the patternator showing the water quantity collected in the single cells allow for preparing a Distribution curve which can be given as a single line curve or as a row of vertical barsThese resemble the liquid level collected into the glass pipes of the old type instrumentation

The curves prepared based on the liquid level in the single cells still are not precise they depend in fact from the testing time the longer this time the larger the liquid quantity sprayedTo eliminate the influence of time from the test it is necessary to transform the effective curves to normalized curves

Normalized4) linear distribution

Normalized5) angular distribution

Please note that Maximum value is the one belonging to the series of values measured in the cellsIn addition to the distribution it is possible to normalize the intervals to with the following formulas

Normalized 6) linear interval

Normalized 7) angular interval

The linear normalized amplitude is defined inside an interval [-1 +1]The angular normalized amplitude is defined inside an interval [0+2π]

Diagram 7 Effective linear distribution curve Diagram 8 Effective angular distribution curve

Mx

xx q

q=δ

N

πθ

2=Δ

Diagram 9 Normalized linear distribution curve Diagram 10 Normalized angular distribution curve

qx is the linear distribution of a generic cellwhere qx

M is the maximum linear distribution measured

qφ is the linear distribution of a generic cellwhere qφ

M is the maximum linear distribution measured

2 is the normalized linear amplitude of the spraywhere N is the number of active cells (active cells = cells containing liquid)

2π is the normalized angular amplitude of the spraywhere N is the number of active cells (active cells = cells containing liquid)

Mq

q

ϕ

ϕϕδ =φ

φ

φ

2

N=Δλ

2

N=Δλ

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26 wwwpnr-nozzlescom CTG SH 07 EU

Evaluation of spray distribution

To evaluate distribution curves it is necessary to take three properties into consideration

a) UNIFORMITY b) MONOTONY c) SIMMETRY

As described in the following diagrams and definitions

a) UNIFORM A distribution that minimizes the ratio AAdeg

b) MONOTONE Is a distribution with a curve which grows on the left side and decreases on the left side c) SYMMETRIC Is a distribution which minimizes the Ratio A+A-

Based on the above definitions the following curves show the ideal situations

The three properties are then evaluated by means of the following parameters

1 Integral uniformity

2 Incremental uniformity

3 Symmetry index

Complete details about the above formulas and definition can be found in our Technical Bulletin REL 080002 which shall be released from our Technical Department on request

Diagram 12Normalized and monotone distribution

Diagram 11Normalized and monotone distribution

Diagram 14Ideal monotony

Diagram 15Ideal symmetry

Diagram 13Ideal uniformity

1001 sdot=MA

AU

1002

2 sdot=lowastσ

U

1001

sdot⎥⎦

⎤⎢⎣

sdotminus=

lowast

lowast

δ

ε

NI S

sum minus=lowast

M

i iδδε

A is the area included in the normalized curvewhere Adeg is the rest of the area included in the 2x1 rectangle

Left side is the area -1 0where Right side is the area 0 +1

A+ is the area included below the curve on the right sidewhere A- is the area included below the curve on the left side

where

where δrsquo is the value of normalized liquid content in the symmetric cell N number of cells containing liquid in half of the diagram

lowast

lowast sum=

N

N

i i

δ

δ N Number of cells containing liquid

A area included below the curve AM area included below the ideal curvewhere

sum minus= +lowast

1

N

i ii δδσ

N Number of cells containing liquid

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SLIQUID SPRAY AND SPRAY NOZZLES Spray Distribution

27wwwpnr-nozzlescomCTG SH 07 EU

Liquids are characterized for their property of undergoing continuous deformation when subjected to shear stress The property of fluids (liquids or gases) to resist flowing due to the existence of internal friction within the fluid is called visco-sity

Thus if we imagine the different layers of fluid sliding one over the other with friction we can imagine that viscosity is defined the force required to move a unit area of fluid for a unit distance Viscosity is measured with many different systems among which the most used are the following

The following table shows correspondences between the most used viscosity units

The viscosity value of a liquid depends upon the temperature therefore the viscosity value must always be given with reference to a temperature value The viscosity of water (20deg C) is 1 Centipoise and 1 Centistoke since water mass density = 1

KINEMATIC SAYBOLT SAYBOLT ENGLER VISCOSITY UNIVERSAL FUROL

Centistoke Sq feetsec SSU SSF Degrees

100 000001076 310 --- 100

500 000005382 424 --- 137

1000 00001076 588 --- 183

1566 00001686 80 --- 245

2052 00002209 100 --- 302

2515 00002707 120 --- 357

4295 00004623 200 --- 592

1080 0001163 500 523 1460

1510 0001625 700 720 2044

1942 0002090 900 921 2628

3023 0003254 1400 143 4090

3885 0004182 1800 183 5260

5394 0005806 2500 254 7300

10788 001161 5000 509 146

15103 001626 7000 712 204

19419 002092 9000 916 263

32365 003483 15000 1526 438

METHOD UNIT DIMENSIONS NOTES

1 Dynamic viscosity(Absolute viscosity) Poise ML T-1 Poise = 100 Centipoises = (1 dyne per seccm2)

2 Kinematic viscosity Stoke L2 T-1 1 Stoke = 100 Centistoke = (cm2sec)Kinematic viscosity = Dynamic viscositydensity

3 SSUSSF

One of the most widely instruments to determine is the Saybolt viscosimeter which measures the time in seconds required for a fixed volume of a given liquid to flow through an orificeSSU = Seconds Saybolt Universal relates to a smaller orifice for less viscous liquidsSSF = Seconds Saybolt Furol relates to a larger orifice for more viscous liquids

LIQUID SPRAY AND SPRAY NOZZLES Influence of liquid viscosity

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28 wwwpnr-nozzlescom CTG SH 07 EU

Viscosity influence on nozzle flow rate

AlI nozzle Catalogue data refer to spraying water (water cinematic viscosity is equal to 1 Centistoke)A liquid with viscosity higher than water will require more energy to be pumped and sprayed and will flow with lower velocity at the same pressure and this will cause a reduction in the turbulence of the flow For the above reason nozzles working on the turbulence principle like normal full cone nozzles and whirl hollow cone nozzles will show an increase in capacity while spraying liquids with viscosity higher than water This increase is very consistent for small size nozzles where the small radius of the whirl chamber tends to cause high turbu-lence in the flow and tends to diminish and to disappear for nominal capacity valves (capacity values at 3 bar) larger than 15 liters per minute

The graph below shows for a liquid with a viscosity of about 4 Centistokes typical variations in the nozzle flow rate value for different values of the nozzle whirl chamber diameter As it may be seen these variations can be neglected in most practical applications where nozzles with whirl chamber diameters well over 3 mm are used

For other types of nozzles not working on the turbulence principle the increase on viscosity will simply reduce the liquid exit velocity at the orifice thus causing a decrease in capacity Experience shows that this decrease ranges between 3 and 6 of nominal water capacity that is to say that the variation introduced is in the same order of magnitude as the nozzle flow rate toler-ance

Viscosity influence on nozzle spray angle and spray pattern

With reference to the theory of jet break-up and droplet information it can be easily imagined that spraying a liquid more viscous than water is a difficult task

Al the properties of the spray tend to worsen therefore one can expectA higher value for the minimum operating pressure that is the pressure value which allows for obtaining a well defined 1 spray with the expected spray angle A worse spray distribution since the viscous behavior of the liquid makes it more difficult to pro-duce fine droplets and 2 to distribute them evenly with the desired spray pattern A narrower spray angle It is difficult to give guidelines since results on different nozzles at different pressures and with 3 different liquids are scarcely predictableHowever our experience shows that in many cases the use of impact nozzles can give acceptable results where all other type of nozzle failsA laboratory test or a field test are stili the safest way to obtain sound results

50

45

40

35

30

25

20

15

10

5

0 2 3 4 5 6 7 8 9

Increase Flow rate vs Whirl Chamber Diameter

Incr

ease

Flo

w R

ate

[mm

]

Whirl Chamber Diameter [mm]

LIQUID SPRAY AND SPRAY NOZZLES Influence of liquid viscosityLI

QUID

SPR

AYAN

D SP

RAY

NOZZ

LES

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With reference to the Bernoulli Rule as exposed in page 6 one can say that the pressure energy of the liquid flow at the nozzle inlet is transformed totally (minus some losses due to friction inside the nozzle) into liquid velocity at the nozzle orificeCatalogue figures give nozzle capacities when spraying waterIf the specific gravity or density of the liquid is different from that of water the available pressure energy will produce a different liquid velocity at the nozzle orificesIn other words a given quantity of energy will spray always the same quantity of liquid mass but different volumes (flow rates) according to the liquid specific gravity or density

Therefore a liquid heavier than water will exit the nozzle with a lower velocity at lower flow rate while to the contrary a liquid lighter than water will be sprayed at higher velocity at higher flow rate

The following formula is to be applied

The table below gives the value of a correction factor to obtain the flow rate of a liquid with different specific weight as water

WhereQL Liquid flow rateQW Water flow rateF Correction factor

kgliter Libregallon F

06 50 129

07 58 120

08 67 112

09 75 105

10 83 100

11 92 095

12 100 091

13 109 088

14 117 085

15 125 082

16 134 079

17 142 077

18 150 075

19 159 073

20 167 071

QL = F QW8

LIQUID SPRAY AND SPRAY NOZZLES Influence of liquid specific gravity

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30 wwwpnr-nozzlescom CTG SH 07 EU

The spraying water impact of a nozzle depends on several factors and more precisely spray distribution pattern and spray angle The first step to calculate the impact value which is usually expressed in Kilograms per square centimeter is to deter-mine Total Theoretical lmpact Value using the following formula

The obtained value has to be multiplied by the Total Theoretical Impact per Square Centimeter Coefficient (E)The final value is the Spraying Liquid Impact expressed in kgpcm2Of course not alI the energy of the fluid vein is transferred to the impact point

A part of this energy sometimes a considerable part goes to obtain a desired spraying angle by having the liquid vein acquire a high rotational speed inside the whirl chamber The highest value of impact is obtained with straight jet nozzle and the value can be calculated multiplying spraying pressure per 19The tables below containing the Total Theoretical Impact sqcm coefficient values for different spray pattern nozzles for a dis-tance of 300 mm

[kgpcm2]

TOTAL THEORETICAL IMPACT PER SQ CM COEFFICIENT AT DISTANCE OF 300 MM (E)

Spray Flat jet nozzle Spray Full cone nozzle Spray Hollow cone nozzle Angle Angle Angle

15deg 0300 15deg 0110 25deg 0180 35deg 0130 30deg 0025 40deg 0120 50deg 0100 50deg 0010 65deg 0070 65deg 0004 60deg80deg 001002 80deg 0050 80deg 0002 100deg 0001

WhereQ is the flow rate at working pressure in lpmP is the pressure value in kgpcm2

[kgpcm2]TTI = 0024 Q P

SLI = E TTI

9

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SLIQUID SPRAY AND SPRAY NOZZLES Jet impact

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Jet impact diagram

A further parameter to characterize the performance of a spray nozzle is the distribution of the jet impact force which could be derived by means of mathematical methods from the values of the spray distribution onto the surface covered by the spray but which can more easily be measured with the help of specifically designed instrumentation

In some applications the jet impact force Is the most important parameter used to realize the required processSteel sheet descaling in a rolling mill is a typical example where the jet impact is required to take away the surface scale and obtain a perfectly even surfaceFor that reason special nozzles have been developed to perform this very task where service life impact value and spray distribution reach the values required for satisfactory resultThese test are performed in a laboratory equipped with a specifically designed instrumentation where the high pressures involved in these process can be reached which can measure the pressure values along a matrix of points distributed in the spray area covered by the nozzle

These values are supplied both in a table of values and as a 3D pressure diagram similar to those shown below

On such applications where producing high impact values in the jet is necessary it is of paramount importance that the liquid flow turbulence is kept to a minimum and therefore it is widely used to insert into the nozzle entrance devices designed to improve the operating conditions by forcing the liquid flow through straight passages with several different shapes by doing so the impact delivered by the spray is increased with the same feed pressure

One typical shape used by Pnr is shown on the right and the two dia-grams below show the impact force diagrams for the same nozzle with and without a flow straightener the reduction of flow turbulence can lead in increase of impact force often higher than 20Further improvements of course are available when the nozzle inside profile is properly designed in order to avoid sharp cross section changes and all surfaces are finished as smoothly as possible

Typical design of a Pnr flow straightener

Impact pressure diagram with flow straightenerImpact pressure diagram without flow straightener

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LIQUID SPRAY AND SPRAY NOZZLES Jet impact

32 wwwpnr-nozzlescom CTG SH 07 EU

LIQUID SPRAY AND SPRAY NOZZLES Pressure drop through a nozzle

Pressure drop through a nozzle

Some of our customers have asked us In the past which Is the pressure drop through a nozzle since they consider a nozzle one of the parts in a piping like a valve or an elbow which causes a given pressure drop along the line

The reality is different and can be easily understood when considering the Bernoulli formula [2] as given at page 19 of this manual the formula says that the total energy of a liquid flow is made from the addition of three facors

Potential energy due to elevationbullPressure energybullVelocity energybull

When we apply the formula at the entrance and at the outlet ( the orifice ) of a nozzle and we neglect the influence of turbulence losses in between we can easily see that

The potential energy variation can be neglected because of the limited dimensions of the nozzle since the distance bullbetween the nozzle entrance and the nozzle orifice plays no role-The pressure energy variation is important since the liquid pressure value falls abruptly from the pressure inside the feed bullpipe to the ambient pressureThe velocity energy variation is also consistent since the liquid is ejected from the orifice at high speedbull

In other words the pressure energy of the liquid flowing through the orifice is suddenly transformed in liquid drops velocity which is exactly what a nozzle is designed to do

This is shown from equation [3] at page 19 which allows the exit velocity from the nozzle to be calculated from the pressure inside the pipe ( we actually consider the pressure difference between the inside of the pipe and the ambient pressure in this formula )

In other words all the energy still available at the nozzle is converted into velocity or if you so prefer you have a total pressure fall The system designer shall therefore evaluate all the pressure drop between the pump outlet flange and the nozzle entrance in order to be sure that the nozzle feed pressure is sufficient to assure the desired capacity for the liquid being sprayed

parameters valuesat nozzle outlet

nozzle inlet nozzle oulet or orice

feed pressure

inlet velocity

parameters valuesat the nozzle inlet

(A)potential elevation

energy

(A)velocity ( kinetic ) energy

(A)pressure energy

ambient pressure

exit velocity

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33wwwpnr-nozzlescomCTG SH 07 EU

NOZ

ZLE

MAT

ERIA

LS

The choice of the right material for a nozzle is sometimes the most important one to do since the nozzle operating life depends upon it There are several factors to influence or shorten the nozzle operating life sometimes more than one at the same time the most important being

Wear from solid particles suspended into the liquid being sprayed1 Chemical corrosion from the liquid being sprayed 2 Chemical corrosion from the ambience outside the nozzle3 Exposure to high temperature 4 Exposure to mechanical shocks5

NOZZLE MATERIALSPnr material codes 34Properties of materials 35Mechanical properties of materials 39Chemical resistance of materials 40

NOZZLE MATERIALS

34 wwwpnr-nozzlescom CTG SH 07 EU

PNR has adopted a short code to identify construction materials for nozzles and nozzle partsHere below the most frequenty used materials

MATERIAL STANDARDS

The following standards are mentioned with reference to materials identification

NOZ

ZLE

MAT

ERIA

LS

A1 Free Cutting Steel E1 TEFLONreg (PTFE) L3 NICROFERreg 5923

A2 Carbon Steel E3 DELRINreg (POM) L4 STELLITEreg 6

A8 Zinc Plated Mild Steel E6 PERSPEXreg (PMMA) L5 HASTELLOYreg B2

A9 Nickel Plated Mild Steel E7 VITONreg (FPM) L6 HASTELLOYreg C4

B2 AISI 304 Stainless Steel E8 NBR- Sh 70 Rubber L61 HASTELLOYreg C22

B3 AISI 316 Stainless Steel E81 SANTOPRENEreg Rubber L62 ULTIMETreg

B31 AISI 316L Stainless Steel E82 KLINGERITEreg L7 NICKEL 201

B4 AISI 321 Stainless Steel E83 HYPALONreg L8 HASTELLOYreg C276

B8 AISI 309 Stainless Steel E91 Silicon L9 SANICROreg 28 SS

B81 AISI 310 Stainless Steel F12 Tungsten Carbide (TC) N1 AISI 302 Stainless Steel

C1 AISI 420 St Steel hardened F2 PIREXreg P6 ABS

C4 AISI 317 Stainless Steel F3 Rubin P7 FASIT OIL

C6 SAF 2205 Stainless Steel F4 Zapphire P8 EPDM ShA Rubber

D1 Polyvinylchloride (PVC) F5 Ceramic P9 STIROLUXreg 637

D2 Polypropylene (PP) F6 Silicon Carbide (SC) T1 Brass

D3 Polyamide (PA) G1 Cast Iron T3 Copper

D5 Powder Charged PP H1 Titanium T5 Bronze

D6 Fiberglass Charged PP L1 MONEL 400 T8 Nickel Plated Brass

D7 High Density Polyethylene L2 INCOLOYreg 825 V1 Aluminium

D8 Polyvinylidenefluoride (PVDF) L21 INCONELreg 600 V7 Aluminium ENP

STANDARD ORGANIZATION COUNTRY STANDARD CODE

AFNOR Association Franccedilaise de Normalisation France NF

AISI American Iron and Steel Institute USA AISI

ANSI American National Standards Institute USA ANSI

ASTM American Society for Testing and Materials USA ASTM

BSI British Standards Institution UK BS

DIN Deutsches Institut fuumlr Normung Germany DIN

DSIT Dansk StandardsInformation Technology Denmark DS

ISO International Organization for Standardization International ISO

JIS Japanese Institute for Standard Japan JIS

UNI Ente Nazionale di Unificazione Italy UNI

NOTEThe complete list of the Materials Codes may be requested to our Technical Service mentioning release code TGCE CODMAT

NOZZLE MATERIALS PNR material codes

35wwwpnr-nozzlescomCTG SH 07 EU

NOZ

ZLE

MAT

ERIA

LS

B1 AISI 303 STAINLESS STEEL

Chemical composition CR 1750 NI 850 S 025 Coding correspondence

Type Stainless Steel Austenitic AISI 303

Hardening Not possible BS 303 S 21

Annealing 1050 1100deg C in water DIN Wnr 14305

Welding Possible with precautions Euro X10CrNiS1809

Corrosion properties

Good resistance Atmospheric exposure food substances organic chemicalsLow resistance Chlorides reducing acids and over 800deg C

JIS SUS 303

NF Z6CN 18-09

SIS 2346

UNI XWCrNiS 1809

B3 AISI 316 STAINLESS STEEL

Chemical composition C 005 CR 170 NI 120 MO 225 Coding correspondence

Type Stainless Steel Austenitic AISI 316

Hardening Not possible BS 316 S 21

Annealing 1050 1100deg C in water DIN Wnr 14401

Welding Easy using same steel electrodes Euro X6CrNiMo17122

Corrosion properties

Good resistance Atmosphere great number of salts organic acids foodsLow resistance Solutions of reducing acids temperatures over 500deg C

JIS SUS 316

NF Z6CND 17-11

SIS 2347

UNI X5CrNiMo1712

B31 AISI 316L STAINLESS STEEL

Chemical composition C 003 CR 170 NI 130 MO 225 Coding correspondence

Type Stainless Steel Austenitic AISI 316 L

Hardening Not possible BS 316S12

Annealing 1050 1100deg C in water DIN Wnr 14404

Welding Easy using same steel electrodes Euro X3CrNiMo1810

Corrosion properties

Good resistance Atmosphere great number of salts organic acids foods salt waterLow resistance Solutions of reducing acids temperatures over 500deg C

JIS SUS 316L

NF Z2CND17-12

SIS 2348

UNI X2CrNiMo 1712

NOZZLE MATERIALS Properties of materials

36 wwwpnr-nozzlescom CTG SH 07 EU

C1 AISI 420 STAINLESS STEEL

Chemical composition C 020 CR 1300 Coding correspondence

Type Stainless Steel Martensitic AISI 420

Hardening 980deg - 1030deg C in oil BS 420 S 29

Annealing 750deg - 800deg C in air DIN Wnr 14021

Welding Possible with precautions Euro X20Cr13

Corrosion properties Good resistance Drinkable water steamgasoline oil alcohol ammonia

JIS SUS 420 J1

NF Z20C13

SIS 2303

UNI X20Cr13

C2 AISI 416 STAINLESS STEEL

Chemical composition C 012 CR 1250 S 022 Coding correspondence

Type Stainless Steel Martensitic AISI 416

Hardening 950deg - 1100deg C in oil BS 416 S 21

Annealing 750deg - 800deg C DIN Wnr ---

Welding Not possible Euro X120CrS13

Corrosion properties Good resistance Drinkable water steamgasoline oil alcohol ammonia

JIS SUS 416

NF Z12CF13

SIS ---

UNI X12CrS13

D8 POLYVINYLIDENE FLUORIDE (PVDF)

Description HIGH-MOLECULAR WEIGHT THE TOUGHEST OF THE FLUOROCARBON RESINS

Trade names amp SuppliersKYNAR (Atochem North America Inc formerly Penwalt Corporation)

SOLEF (Solvay Polymer Corporation)

Physical andMechanical Properties

Excellent resistance to abrasion and stress fatigue

Extremely pure opaque white resin

Thermal Properties UsefuI in temperatures ranging from -73 149degC (-100 300degF)Heat deflection temperature is (8090deg C at 182 Bars (176 194deg F at 264 psi)

Chemical Compatibility

Excellent chemical resistanceCan be used with wet or dry halogens most strong acids and bases aliphatics aromaticsalcohols and strong oxidizing agentsNot recommended for contact with ketones esters amines and some organic acids(fuming sulfuric acid)

NOZZLE MATERIALS Properties of materialsN

OZZL

E M

ATER

IALS

37wwwpnr-nozzlescomCTG SH 07 EU

E1 POLYTETRAFLUOROETHYLENE (PTFE)

Description FLUOROPLASTIC THAT HAVE SOME OR ALL OF THEIR HYDROGEN MOLECULESREPLACED BY FLUORINE

Trade names amp Suppliers

TEFLON TFE FEP and PFA (Dupont Polymer Products)

NEOFLON (Daikin)

FLUON (ICI Americas Inc)

SST-2SST-3 (Shamrock Technologies Inc)

Physical andMechanical Properties

Low coefficient

Low adhesiveness

Buona resistenza agli agenti atmosferici

Good weatherabilityLow resistance to creep and wear unless reinforced with glass figravebers which results in superior resistance

Thermal Properties High and low temperature stabilityHeat deflection temperatures range from 4855deg C at 182 bar (118-132deg F at 264 psi)

Chemical CompatibilityChemically inert

Totally insoluble

E3 ACETAL (ACETAL HOMOPOLYMERS AND COPOLYMERS)

Description HIGHLY CRYSTALLINE RESINS BASED ON FORMALDEHYDE POLYMERIZATION TECHNOLOGY

Trade names amp Suppliers

DELRIN (Dupont Polymer Products Corporation)

CELCON (Hoechst Celanese Corporation)

ULTRAFORM (BASF Corporation)

RTP 800 (RTP Corporation)

LUPITAL amp TENAL (Franklin Polymers Inc)

FULTRON 404 (ICI Americas Inc)

Physical andMechanical Properties

High tensile strength rigidity and esilience

High fatigue endurance

Excellent dimensional stability

Low coefficient of friction

Outstanding abrasion and wear resistance

Excellent creep resistance

Thermal Properties Heat deflection temperatures range from 110 -136deg C at 182 bars(230 - 270deg F at 264 psi) higher if glass figravelled

Chemical Compatibility

Remains stable in long-term high temperature water immersionExcellent resistance to chemicals and solvents but prolonged exposure to strong acids not recommendedNote Suitable for close-tolerance high-performance partsAvailable for machined parts or may be injection molded

NOZZLE MATERIALS Properties of materials

NOZ

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MAT

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38 wwwpnr-nozzlescom CTG SH 07 EU

L6 HASTELLOY C4

PHYSICAL AND MECHANICAL PROPERTIES CHEMICAL COMPOSITION CORROSION RESISTANCE

R = 650800 Mpa C = 0015 max

Very good against pitting and tensile-corrosion specially in oxydizing atmosphereResistance in welded joints definitely better than C 276 lower than C22

Rp02 = 250470 Mpa Ni = 65

HRB = 90 Cr = 160

Mo = 155

W = --

Fe = 3 max

Ti = 05

Co = 2 max

APPLICATIONSRecommended for applications with strongly oxidizing atmosphere

L61 HASTELLOY C 22

PHYSICAL AND MECHANICAL PROPERTIES CHEMICAL COMPOSITION CORROSION RESISTANCE

R = 700800 Mpa C = 001 max

Excellent performances with oxydizing atmospheres as well as for pitting and tensile-corrosion conditionsVery good resistance in reducing atmospheres and for welded joints

Rp02 = 360420 Mpa Ni = 56

HRB = 93 Cr = 22

Mo = 13

W = 3

Fe = 3

Ti = --

Co = 25 max

APPLICATIONSChemical industry (gas ducts gas washing and treatment systems phosphoric acid production) Heat exchangers pumps chlorination reactors

L8 HASTELLOY C 276

PHYSICAL AND MECHANICAL PROPERTIES CHEMICAL COMPOSITION CORROSION RESISTANCE

R = 600800 Mpa C = 0015 max

Very good in reducing and oxydizing atmospheresVery good against pitting and tensile-corrosionAcceptable resistance in welded jointsIn cast parts excessive segregation not eliminated by thermal treatment of annealing makes it convenient to use C22 or C4 qualitieswhich assure better corrosion resistance and mechanical properties

Rp02 = 300370 Mpa Ni = 57

HRB = 90 Cr = 145165

Mo = 1517

W = frac345

Fe =

V = 035 max

Co = 25 max

APPLICATIONSChemical industry (air ducts scrubbers fans) Paper industry Thermoelectric plants Steel thermal treatments

NOZ

ZLE

MAT

ERIA

LSNOZZLE MATERIALS Properties of materials

39wwwpnr-nozzlescomCTG SH 07 EU

MATERIALTENSILE STRENGHT

CORROSION RESISTANCERp 02 R

20degC 800degC 20degC 800degC

(68degF) (1408degF) (68degC) (1408degC)

AISI 302 280 100 680 200

Good sensitive to corrosionbetween grains for slow heatingand cooling in the 450-900deg Crange temperature

AISI 303 280 100 680 200 Discrete

AISI 304304L 270 90 600 100Good especially for 304L304 sensitive to corrosionbetween grains like AISI 302

AISI 309 250 100 640 220 Good Sensitive to corrosion between grains like AISI 302

AISI 310 310 170 650 270Good (gt 304 - 304L)Sensitive to corrosionbetween grains like AISI 302

AISI 316316L 270 110 560 220 Very high especially for 316L

AISI 321 210 100 540 140 Good

AISI 347 280 120 620 200 Good

AISI 416 620 70 750 90

Good in medium corrosive ambient (atmosphere water gasoline alcohol N1-13 foods)Not in high corrosive

BRASS 110-150 --- 360-410 --- Good especially when nickel plated

BRONZE 100-300 --- 200-600 --- Discrete especially with sea water

CAST IRON le 500 V 100-800 V

NICKEL ALLOYS 100-1000 V 300-1300 VVery high also for high temperature To use in the temperaturerange 800-1200deg C

PLASTICS --- --- 20-200 ---

Good also for erosionGenerally they are attackedwith oxidizers like nitric acidhalogens ect

PTFE --- --- 30-40 ---

Very high except for elementarystate of alkaline metalsand to compounds containingfluorine at high temp

DUPLEX STEEL gtAISI 3 gtAISI 3 gtAISI 3 gtAISI 3 Very high also with high temperatureand also for pitting

TITANIUM alloy 195-850 V 300-900 VVery high in oxidizing ambientVery low in reducing ambient and with compounds containing fluorine

Legend Rp 02 = 02 YIELD STRENGHT [MPa]R = ULTIMATE TENSILE STRENGHT [MPa]V = To verify time by time

NOZZLE MATERIALS Mechanical properties of materials

NOZ

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MAT

ERIA

LS

73wwwpnr-nozzlescomCTG SH 07 EU

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PIPINGPipes data 74Economic pipe sizes 75Pressure drop in clean steel pipes 76Flange dimensions 78Sieve size conversion chart 80

PIPING

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The following table report the data of pipes according to ANSI B3619 that is one of the most used standards that regulate welded stainless steel pipes

DN NPS OD[mm]

SCHEDULE

5S 10S 40SSTD 80SXS

t m t m t m t m

[mm] [kgm] [mm] [kgm] [mm] [kgm] [mm] [kgm]

6 18 103 NA NA 124 028 173 037 241 048

8 14 137 NA NA 165 050 224 064 302 081

10 38 172 NA NA 165 064 231 086 320 112

15 12 213 165 081 211 101 277 128 373 164

20 34 267 165 103 211 130 287 171 391 223

25 1 334 165 131 277 212 338 254 455 328

32 1frac14 422 165 167 277 273 356 344 485 453

40 1frac12 483 165 192 277 315 368 411 508 549

50 2 603 165 242 277 399 391 551 554 759

65 2frac12 730 211 374 305 534 516 875 701 116

80 3 889 211 458 305 655 549 115 762 155

90 3frac12 1016 211 525 305 752 574 138 808 189

100 4 1143 211 592 305 849 602 163 856 226

125 5 1413 277 960 340 117 655 221 953 314

150 6 1683 277 115 340 140 711 287 1097 432

200 8 2191 277 150 376 202 818 431 1270 656

250 10 2730 340 229 419 282 927 611 1270 827

300 12 3239 396 317 457 365 953 749 1270 988

350 14 3556 396 348 478 419 NA NA NA NA

400 16 4064 419 421 478 480 NA NA NA NA

450 18 457 419 474 478 541 NA NA NA NA

500 20 508 478 602 554 696 NA NA NA NA

550 22 559 478 662 554 767 NA NA NA NA

600 24 610 554 837 635 959 NA NA NA NA

Where

DN = Nominal diameter NPD = Nominal Pipe Size OD = Outside Diameter t = Wall Thickness m = Specific WeightPIPI

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PIPING Pipes data

75wwwpnr-nozzlescomCTG SH 07 EU

The following Specific Pressure Drops (Y) are normally used in the good engineering practice(where Y=ΔPL ΔP Pressur Drop and L Pipe Lenght)

For pipe sizing the Velocity (V) is also usedIn the following table are shown the typical liquid velocities in steel pipes

Some fixed pressure drop values indicationsfor gate valves (fully open) consider a pressure drop of 5 metersbullfor normal bends consider a pressure drop of 5 metersbullfor a check valve consider a pressure drop of 15 metersbull

In the succeeding tables we show the velocity and specific pressure drop for several flow rates and pipe diameters

Not boiling waterY = 02divide05 bar100 m for pump discharge (07 bar100 m max if P gt 50 bar)

Y lt 0110 bar100 m for pump suction

Boiling water Y = 004divide005 bar100 m for pump suction (velocity = 03divide09 ms)

LIQUID LINE TYPE

Specific Pressure Dropsvs Velocity [ms]

0 lt V lt 2 3 lt V lt 10 10 lt V lt 20

NOT BOILING WATER

Pump suctionPump discharge (long)Discharge leads (short)Boiler feedDrainsSloped sewer

03 divide 0606 divide 0912 divide 2712 divide 2709 divide 12

-

06 divide 1209 divide 1515 divide 3715 divide 3709 divide 1509 divide 15

09 divide 1812 divide 2124 divide 4224 divide 42

-12 divide 21

HYDROCARBON LIQUIDS(normal viscosity)

Pump suctionDischarge heather (long)Discharge leads (short)Drains

05 divide 0808 divide 1112 divide 2709 divide 12

06 divide 1209 divide 1515 divide 3709 divide 15

09 divide 1812 divide 2124 divide 46

-

MEDIUM VISCOSITY OILPump suctionDischarge (short)Drains

--

03

05 divide 0901 divide 0209 divide 15

08 divide 1501 divide 0312 divide 18

OTHER WATERCooling tower Chilled waterSea water and generally foulingwater (long pipes) ()

06 divide 09 09 divide 15 12 divide 21

Note () In this case Cameron method has to be used with C=1 Y = 005 divide 012 bar100 m for principal manifold Y = 012 divide 023 bar100 m for secondary manifold

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PIPING Economic pipe sizes

76 wwwpnr-nozzlescom CTG SH 07 EU

18rdquo 14rdquo

1 0350 0370 0200 0090 38rdquo 12rdquo

2 0705 1340 0395 0331 0223 0082 0145 0029 34rdquo

3 1060 2890 0593 0673 0333 0176 0217 0061 0125 0016 1rdquo

4 1410 4940 0788 1150 0444 0291 0290 0101 0167 0027 0110 0010

5 1760 7460 0985 1750 0556 0424 0362 0149 0209 0040 0137 0014

6 1180 2460 0667 0594 0434 0207 0251 0054 0165 0019 114rdquo

8 1580 4060 0892 1020 0579 0351 0335 0091 0219 0033 0126 0009 112rdquo

10 1110 1530 0724 0534 0418 0136 0274 0049 0158 0012 0116 0006

15 1670 3250 1090 1130 0627 0284 0411 0099 0236 0026 0174 0012

20 2rdquo 2230 5600 1450 1900 0836 0481 0549 0168 0315 0043 0233 0021

30 0212 0013 212rdquo 2170 4130 1250 1020 0823 0353 0473 0092 0348 0043

40 0283 0022 0190 0007 2900 7180 1670 1760 1100 0606 0631 0155 0465 0073

50 0354 0032 0237 0012 2090 2700 1370 0911 0789 0233 0581 0108

60 0424 0044 0284 0017 2510 3810 1650 1290 0943 0321 0697 0150

70 0495 0079 0332 0022 3rdquo 2930 5120 1920 1720 111 0434 0814 0199

80 0566 0074 0379 0028 0248 0010 312rdquo 2190 2210 126 0554 0925 0253

90 0636 0093 0427 0035 0279 0013 0209 0006 2470 2770 142 0692 1040 0319

100 0707 0114 0474 0043 0310 0015 0232 0007 4rdquo 2740 3400 158 0843 1160 0392

150 1060 0238 0711 0090 0464 0031 0349 0016 0272 0008 4110 7440 236 181 1740 0828

200 1410 0414 0948 0153 0619 0053 0466 0027 0362 0014 315 314 2330 1450

250 1760 0625 1190 0233 0774 0080 0581 0040 0453 0021 5rdquo 2900 2200

300 2120 0889 1420 0324 0930 0112 0698 0055 0543 0030 0352 0011 3480 3070

350 2470 1190 1660 0438 1080 0150 0815 0074 0634 0040 0411 0014 6rdquo 4070 4160

400 2830 1550 1900 0563 1240 0195 0935 0096 0724 0051 0469 0018 0341 0007 4650 5380

450 3180 1930 2130 0707 1390 0242 1050 0120 0815 0063 0528 0022 0366 0009 5230 6790

500 3540 2380 2370 0867 1550 0298 1170 0147 0902 0076 0587 0027 0407 0011

550 3880 2870 2610 1040 1700 0354 1280 0174 0991 0092 0645 0032 0447 0013

600 4240 3390 2840 1220 1860 0418 1400 0204 1090 0110 0704 0037 0488 0015

650 4590 5560 3080 1420 2010 0486 1510 0239 1180 0127 0762 0043 0529 0017

700 4950 4550 3320 1650 2170 0560 1630 0275 1270 0146 0821 0050 0569 0020

750 5300 5200 3560 1880 2320 0637 1750 0314 1360 0164 0879 0057 0610 0023

800 3790 2130 2480 0721 1860 0354 1450 0185 0936 0064 0651 0025 8rdquo

850 4030 2390 2630 0805 1980 0395 1540 0209 1000 0072 0692 0028 0403 0007

900 2790 0901 2090 0438 1630 0232 1050 0008 0732 0032 0427 0008

950 2940 1000 2210 0486 1720 0258 1120 0087 0773 0036 0451 0010

1000 3100 1110 2320 0534 1810 0284 1170 0096 0814 0039 0474 0011

1100 3410 1290 2560 0643 1990 0341 1290 0116 0895 0047 0522 0012

1200 3720 1 580 2800 0763 2170 0403 1410 0135 0974 0055 0569 0015

1300 3030 0890 2360 0473 1530 0157 1060 0063 0616 0017

1400 3260 1020 2540 0544 1640 0183 1140 0072 0664 0019

1500 3490 1170 2720 0617 176 0208 1220 0083 0712 0022

1600 3720 1330 2890 0697 1880 0234 1300 0093 0758 0025

1700 10rdquo 3950 1490 3080 0784 1990 0260 1380 0104 0806 0028

1800 0546 0010 3260 0875 2110 0290 1470 0116 0854 0032

1900 0575 0012 3440 0965 2230 0323 1550 0129 0901 0034

2000 0606 0012 3617 1060 2340 0356 1630 0143 0946 0037

2200 0667 0015 3980 1280 2580 0429 1790 0172 1050 0045

2400 0727 0017 12rdquo 2820 0507 1950 0200 1140 0053

2600 0788 0021 0563 0009 3050 0589 2110 0234 1230 0061

2800 0848 0023 0606 0010 14rdquo 3280 0676 2280 0268 1330 0070

3000 0909 0026 0649 0011 0532 0007 3520 0773 2440 0306 1420 0080

3500 1060 0035 0760 0015 0620 0009 4110 105 2850 0416 1660 0108

4000 1210 0045 0866 0020 0709 0012 16rdquo 4690 135 3250 0532 1900 0139

4500 1360 0056 0976 0025 0798 0015 0606 0007 3660 0674 2130 0173

5000 1520 0069 1080 0029 0886 0018 0674 0009 4070 0822 2370 0212

6000 1810 0097 1290 0042 1070 0026 0808 0013 18rdquo 4880 1160 2850 0301

7000 2120 0130 1510 0055 1240 0035 0940 0017 0741 0010 5690 1580 3310 0403

8000 2420 0168 1730 0072 1420 0045 1080 0022 0847 0012 6510 2050 3790 0525

9000 2730 0210 1950 0091 1600 0056 1210 0027 0954 0015 4270 0659

10000 3030 0257 2170 0111 1770 0067 1350 0033 1050 0019 4740 0801

Legend Q Water Flow Rate (Lpm) V Velocity (ms) Y Specific Pressure Drops (bar100m)Water at ambient temperature in straight pipe

SPECIfIC PRESSURE DROPS fOR WATER fLOW IN CLEAN STEEL PIPE SCH 10S

Q V Y V Y V Y V Y V Y V Y V Y V Y [lm] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m]

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77wwwpnr-nozzlescomCTG SH 07 EU

SPECIfIC PRESSURE DROPS fOR WATER fLOW IN CLEAN STEEL PIPE SCH 40S

Legend Q Water Flow Rate (Lpm) V Velocity (ms) Y Specific Pressure Drops (bar100m)Water at ambient temperature in straight pipe

18rdquo 14rdquo

1 0458 0726 0251 0170 38rdquo 12rdquo

2 0918 2590 0501 0600 0272 0136 0170 0044 34rdquo

3 1380 5590 0752 1220 0407 029 0255 0091 0144 0023 1rdquo

4 1840 9570 1000 2090 0543 048 0340 0151 0192 0038 0120 0012

5 2290 14450 1250 3180 0679 070 0425 0223 0241 0057 0150 0017

6 1500 4460 0815 0980 0510 0309 0289 0077 0180 0024 114rdquo

8 2010 7360 1090 1690 0680 0524 0385 0129 0240 0041 0138 0011 112rdquo

10 1360 2520 0850 0798 0481 0193 0300 0061 0172 0015 0127 0008

15 2040 5370 1280 1690 0722 0403 0450 0124 0258 0032 019 0015

20 2rdquo 2720 9240 1700 2840 0962 0683 0600 0210 0344 0054 0254 0026

30 0231 0016 212rdquo 2550 6170 1440 1450 0900 0442 0517 0114 038 0053

40 0308 0027 0216 0010 3400 10720 1920 2500 1200 0758 0689 0193 0507 0091

50 0385 0039 0270 0017 2410 3830 1500 1140 0861 029 0634 0135

60 0462 0055 0324 0023 2890 5410 1800 1610 103 0400 0761 0187

70 0539 0098 0378 0031 3rdquo 3370 7270 2100 2150 1210 0541 0888 0248

80 0616 0092 0432 0039 028 0014 312rdquo 2400 2760 1380 0690 1010 0315

90 0693 0115 0486 0048 0315 0017 0235 0008 2700 3470 1550 0862 1140 0397

100 0770 0141 0540 0059 035 002 0261 0010 4rdquo 3000 4250 1720 1050 1270 0488

150 1150 0295 0810 0125 0524 0042 0392 0021 0304 0011 4500 9300 2580 2260 1900 1030

200 1540 0512 1080 0212 0699 0072 0523 0036 0405 0019 3440 3910 2540 1810

250 1920 0773 1350 0322 0874 0108 0653 0053 0507 0028 5rdquo 3170 2740

300 2310 1100 1620 0449 105 0152 0784 0074 0608 004 0387 0014 3800 3820

350 2690 1470 1890 0606 122 0203 0915 0099 0710 0053 0452 0018 6rdquo 4440 5180

400 3080 1920 2160 0780 14 0264 1050 0128 0811 0068 0516 0023 0375 0009 5070 6690

450 3460 2390 2430 0979 157 0328 1180 0161 0912 0084 0581 0028 0402 0012 5710 8450

500 3850 2950 2700 1200 175 0403 1310 0196 1010 0101 0646 0034 0447 0014

550 4230 3550 2970 1440 192 0479 1440 0232 1110 0122 0710 0041 0491 0016

600 4620 4200 3240 1690 2100 0566 1570 0273 1220 0146 0775 0047 0536 0019

650 5000 6880 3510 1970 2270 0658 1700 0319 1320 0169 0839 0055 0581 0022

700 5390 5630 3780 2280 2450 0759 1830 0368 1420 0194 0904 0063 0625 0025

750 577 6440 4050 2600 2620 0863 1960 042 1520 0218 0968 0072 067 0029

800 4320 2950 2800 0977 2090 0473 1620 0246 1030 0081 0715 0032 8rdquo

850 4590 3310 2970 1090 2220 0528 1720 0277 1100 0091 076 0036 0439 0009

900 3150 1220 2350 0585 1820 0308 1160 0100 0804 0041 0465 001

950 3320 1350 248 0649 1930 0342 1230 0111 0849 0045 0491 0012

1000 3500 1500 261 0714 2030 0377 1290 0122 0894 0049 0516 0013

1100 3850 1750 2870 0860 2230 0452 1420 0147 0983 0059 0568 0015

1200 4200 2140 3140 1020 2430 0534 1550 0172 1070 0069 0620 0018

1300 3400 1190 2640 0627 1680 0200 1160 008 0671 0021

1400 3660 1370 2840 0722 1810 0232 1250 0091 0723 0024

1500 3920 1560 3040 0818 1940 0264 1340 0105 0775 0027

1600 4180 1780 3240 0924 2070 0297 1430 0118 0826 0031

1700 10rdquo 4440 1990 3450 1040 2190 0331 1520 0132 0878 0035

1800 0590 0012 3650 1160 2320 0369 1610 0147 0930 0039

1900 0622 0014 3850 1280 2450 041 1700 0163 0981 0042

2000 0655 0015 40500 1410 2580 0452 1790 0181 1030 0046

2200 0721 0018 4460 1700 2840 0545 1970 0217 1140 0056

2400 0786 0021 12rdquo 3100 0645 2140 0253 1240 0065

2600 0852 0025 0600 001 3360 0749 2320 0296 1340 0076

2800 0917 0028 0646 0012 14rdquo 3610 0859 2500 0339 1450 0087

3000 0983 0032 0692 0013 0573 0008 3870 0982 268 0387 1550 0099

3500 1150 0043 0810 0018 0668 0011 4520 1330 3130 0526 1810 0134

4000 1310 0055 0923 0023 0764 0014 16rdquo 5160 1720 3570 0673 2070 0172

4500 1470 0068 1040 0029 0860 0018 0658 0009 4020 0853 2320 0214

5000 1640 0084 1150 0034 0955 0022 0731 0011 4470 1040 2580 0262

6000 1960 0118 1380 0049 1150 0031 0877 0016 18rdquo 5360 1470 3100 0373

7000 2290 0158 1610 0065 1340 0042 1020 0021 0808 0012 6250 2000 3610 0499

8000 2620 0204 1840 0085 1530 0054 1170 0027 0924 0015 7150 2590 4130 065

9000 2950 0256 2080 0107 1720 0067 1310 0033 1040 0019 4650 0816

10000 3280 0313 2310 0130 1910 0081 1460 0041 1150 0023 5160 0992

Q V Y V P V Y V Y V Y V Y V Y V Y [lm] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m]

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78 wwwpnr-nozzlescom CTG SH 07 EU

10 75 12 038 4 11 50

15 80 12 044 4 11 55

20 90 14 065 4 11 65

25 100 14 082 4 11 75

32 120 14 117 4 14 90

40 130 14 139 4 14 100

50 140 14 162 4 14 110

65 160 14 214 4 14 130

80 190 16 343 4 18 150

100 210 16 422 4 18 170

125 240 18 611 8 18 200

150 265 18 751 8 18 225

175 295 20 1020 8 18 255

200 320 20 1230 8 18 280

250 375 22 1850 12 18 335

300 440 22 2550 12 22 395

350 490 22 3180 12 22 445

400 540 22 3850 16 22 495

450 595 22 4700 16 22 550

500 645 24 6040 20 22 600

PN 6 (UNI 6091)

ND 6 (DIN 2527) DN Flange Holes

D t W N Oslash a

90 14 063 4 14 60

95 14 071 4 14 65

105 16 101 4 14 75

115 16 122 4 14 85

140 16 180 4 18 100

150 16 209 4 18 110

165 18 287 4 18 125

185 18 365 4 18 145

200 20 461 8 18 160

220 20 565 8 18 180

250 22 812 8 18 210

285 22 1050 8 22 240

315 24 1410 8 22 270

340 24 1620 12 22 295

405 28 2510 12 25 355

460 28 3520 12 25 410

520 30 4820 16 25 470

580 32 6350 16 30 525

640 32 7720 20 30 585

715 34 1020 20 33 650

PN 16 (UNI 6093)

ND 16 (DIN 2527) Dimensions Holes

D t W N Oslash a

ND 10 (DIN 2527) Dimensions Holes

D t W N Oslash a

90 14 063 4 14 60

95 14 071 4 14 65

105 16 101 4 14 75

115 16 122 4 14 85

140 16 180 4 18 100

150 16 209 4 18 110

165 18 287 4 18 125

185 18 365 4 18 145

200 20 461 4 18 160

220 20 565 8 18 180

250 22 812 8 18 210

285 22 1050 8 22 240

315 24 1410 8 22 270

340 24 1650 8 22 295

395 26 2410 12 22 350

445 26 3080 12 22 400

505 26 3960 16 22 460

565 26 4960 16 25 515

615 26 5860 20 25 565

670 28 7530 20 25 620

PN 10 (UNI 6092)

LegendaDN Nominal DiameterD Flange External Diametert Flange ThicknessW Flange WeightN Hole NumberOslash Hole Diametera Hole axis

PIPING Flange dimensionsPI

PIN

G

Blind flanges to DIN 2527

79wwwpnr-nozzlescomCTG SH 07 EU

LegendDN Nominal DiameterD Flange External Diametert Flange ThicknessW Flange WeightN Hole NumberOslash Hole Diametera Hole axis

12rsquorsquo 889 111 08 4 159 603

34rsquorsquo 984 127 09 6 159 698

1rsquorsquo 1079 143 10 4 159 794

114rsquorsquo 1175 159 13 4 159 889

112rsquorsquo 1270 175 14 4 159 984

2rsquorsquo 1524 190 18 4 190 1206

212rsquorsquo 1778 222 32 4 190 1397

3rsquorsquo 1905 238 41 4 190 1524

312rsquorsquo 2159 238 59 8 190 1778

4rsquorsquo 2286 238 77 8 190 1905

5rsquorsquo 2540 238 91 8 222 2159

6rsquorsquo 2794 254 118 8 222 2413

8rsquorsquo 3429 286 204 8 222 2984

10rsquorsquo 4064 302 318 12 254 3619

12rsquorsquo 4826 317 500 12 254 4318

14rsquorsquo 5334 349 600 12 286 4762

16rsquorsquo 5969 365 770 16 286 5397

18rsquorsquo 6350 397 950 16 317 5778

20rsquorsquo 6985 429 1230 20 317 6350

22rsquorsquo 7493 460 1510 20 349 6921

ANSI 150 lb DN Flange Holes

D t W N Oslash a

952 143 10 4 159 667

1175 159 14 4 190 825

1238 175 18 4 190 889

1333 206 27 4 190 984

1556 222 36 4 222 1143

1651 254 45 8 190 1270

190S 286 68 8 222 1492

209S 317 91 8 222 1683

2286 349 132 8 254 1841

2540 349 150 8 254 2000

2794 381 200 8 254 2349

3175 413 277 12 254 2699

3810 476 450 12 286 3302

4445 540 700 16 317 3873

5207 571 103 16 349 4508

5842 603 141 20 349 5143

6477 635 181 20 381 5715

7112 667 228 24 381 6286

7747 698 282 24 413 6858

8382 730 311 24 444 7429

ANSI 400 lb Dimensions Holes

D t W N Oslash a

ANSI 300 lb Dimensions Holes

D t W N Oslash a

952 143 10 4 159 667

1175 159 14 4 190 825

1238 175 18 4 190 889

1333 190 27 4 190 984

1556 206 32 4 220 1143

1651 222 36 8 190 1270

1905 254 54 8 222 1492

2095 286 73 8 222 1683

2286 302 95 8 222 1841

2540 317 122 8 222 2000

2794 349 159 8 222 2349

3175 365 227 12 222 2699

3810 413 370 12 254 3302

4445 476 580 16 286 3873

5207 508 840 16 317 4508

5842 540 1070 20 317 5143

6477 571 1390 20 349 5715

7112 603 3900 24 349 6286

7747 635 2230 24 349 6858

8382 667 2700 24 413 7429

PIPING Flange dimensions

PIPI

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flanges to ANSI norms

80 wwwpnr-nozzlescom CTG SH 07 EU

PIPI

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Sieves are used both for determining the particle size distribution of a granular material and to filter solid particles in a liquid Normally the sieve is made with a fabric whose characteristic dimensions areL is the Opening Width (free passage)D is the Diameter of the wireP is the Pitch of the wireS is the Thickness of the fabricTo classify particle sizes there is some Sieve Series according to specific standardsthe most known are Tyler Sieve Series US Sieve Series UK Sieve SerieshellipThe Tyler mesh size indicates exactly the number of openings per linear inch of mesh

L[microm]

TYLER Sieve[Mesh No]

ASTM E11 Sieve[Mesh No]

BS 410 Sieve[Mesh No]

DIN 4188 Sieve[mm]

5 2500 2500 0005

10 1250 1250 0010

15 800 800 0015

20 625 635 625 0020

22 0022

25 500 500 500 0025

28 0028

32 na 450 440 0032

36 0036

38 400 400 400

40 0040

45 325 325 350 0045

50 0050

53 270 270 300

56 0056

63 250 230 240 0063

71 0071

75 200 200 200

80 0080

90 170 170 170 0090

100 0100

106 150 140 150

112 0112

125 115 120 120 0125

140 0140

150 100 100 100

160 0160

180 80 80 85 0180

200 0200

In the german standard (DIN norm 4188) the Opening Width (L) is given in millimeters

PIPING Sieve size conversion chartPI

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L[microm]

TYLER Sieve[Mesh No]

ASTM E11 Sieve[Mesh No]

BS 410 Sieve[Mesh No]

DIN 4188 Sieve[mm]

212 65 70 72

250 60 60 60 0250

280 0280

300 48 50 52

315 0315

355 42 45 44 0355

400 0400

425 35 40 36

450 0450

500 32 35 30 0500

560 0560

600 28 30 25

630 0630

710 24 25 22 0710

800 0800

850 20 20 18

900 0900

1000 16 18 16 1000

1120 1120

1180 14 16 14

1250 1250

1400 12 14 12 1400

1600 1600

1700 10 12 10

1800 1800

2000 9 10 8 2000

2240 2240

2360 8 8 7

2500 2500

2800 7 7 6 2800

3150 3150

3350 6 6 5

3550 3550

4000 5 5 4 4000

4500 4500

4750 4 4 35

5000 5000

5600 35 35 3

6700 3 0265 in 1

8000 25 516 in na

Applicable standards areISO 565 (1987) ISO 3310 (1999) ASTM E 11-70 (1995)DIN 4188 (1977) BS 410 (1986) AFNOR NFX11-501 (1987)

Legend Q Water Flow Rate V Velocity P Pressure drop Pressure drop in bar per 100 meters of straight pipe (water at ambient temperature)

PIPING Sieve size conversion chart

PIPI

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Besides its main range of nozzles for industrial applications PNR manufactures a wide range of complementary products and systems to optimize the use of spray jets and fluids control in most of the modern industrial processes

PNR PRODUCT RANGE

CTG AC

CTG LS

CTG UG

CTG AZ

Complementary Products andAssembly FittingsA complete line of nipples clamps swivel joints and everything that helps you to assemble align and service your spraying systems quickly and easilyAir blowers mixing eductors filters clean-ing guns and lances hose reels steam heaters pressure tanks quick couplings to help you build up a professional system upgraded to the latest standards

Tank washing systemsA complete range from simple fixed washing heads to the two-axis heads from mushroom nozzles to fluid driven reaction heads up to the motor driven washing heads equipped with a pneu-matic or electric motorAll for the inside cleaning of industrial tanks according to the latest technology accessories included

Spray nozzles for industrial applicationsOne of the world most complete lines of nozzles for numberless industrial appli-cations Nozzles with a wide openings range various types of vanes several spray patterns anti-clog design available in small and big dimensions and made in many food-grade materials like PFTE and Stainless Steel 316L with threaded and flanged connections

Air assisted atomizersUltrasonic classic and automatic atomiz-ers for the finest atomization in any insus-trial process High quality machining and strict quality control ensure your systems top professional resultsProgramming and control panels for an easy assembly of complete humidification systems

CTG SP

CTG PM

CTG SW

CTG LN

Spraydry nozzlesAir assisted or hydraulic high pressure ato-mizers made in high-quality metal alloys or tungsten carbideA complete line of nozzles for the moder-nization of existing facilities at competitive prices To ensure highly accurate results and a long service life these nozzles are manufactured with the finest materials and technologically advanced machines

Paper mill productsA line of products specifically designed for perfect results on paper mill machines including disc nozzles patented for self-cleaning filters flat jet nozzles with orifices in sapphire ruby and ceramic oscillating tubes equipped with a computer driven motor

Steelwork nozzlesA complete line of nozzles for steelwork applications including continuous casting air atomizers and conventional nozzles descaling nozzles for high pressure sys-tems dovetail tips for cylinders cooling and high capacity flanged nozzles for coke quenching

Gas cooling lancesSpillback or air assited lances for gas coo-ling in steelworks cement plants and other industrial applicationsWe can supply spare parts upgrade your plant and even supply a complete PLC driven system to enhance the towers per-formances to the highest efficiency level allowed by today technology

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Our products are distributed through

We are also represented in

PNR AmericaPNR Asia

PNR BalticPNR Benelux

PNR ChinaPNR Czech Republic

PNR DeutschlandPNR France

PNR ItaliaPNR Mexico

PNR UK

ArgentinaAustraliaAustriaBrazil

BulgariaCanada

ChileCroatia

DenmarkFinlandGreece

IndiaIndonesia

IranIrelandKorea

MalaysiaNorway

New ZealandPakistan

PhilippinesPoland

Portugal

RumeniaRussiaSerbia

SingaporeSlovenja

SpainSouth Africa

SwedenTaiwanTurkey

Venezuela

Page 8: SPRAY CTG SH 07 EU ENGINEERING HANDBOOK

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LIQUID SPRAY AND SPRAY NOZZLESLiquid spray 9Spray nozzle types 11Spray nozzle coding 13Computerized fluid dynamics 14Spray generation 15Droplet spectrum 16Nozzle flow rate 19Spray angle 21Spray distribution 23Influence of liquid viscosity 27Influence of liquid specific gravity 29Jet impact 30Pressure drop through a nozzle 32

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A nozzle is a device which converts the energy from a fluid into velocity of the spray dropletsApplications in many industrial processes are numberless with spray nozzles being very often a critical component in determining the final quality of the product or the efficiency of the processFor this reason the available nozzle range types for industrial applications can be found in PNR nozzle catalogue as well as a concise but complete information about the most important parameters which can give a technical definition of a spray and its qualityWe have grouped in the following the most useful formulas for designing a spray system showing the influence of the different factors which can affect the process of sprayingMore information about the working life of a nozzle and the best suited material for a given purpose can be found at page 17 of this publication AlI the following data when not otherwise specified refer to spraying water at 15deg C

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LIQUID SPRAY AND SPRAY NOZZLES Liquid spray

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LIQUID SPRAY AS A PROCESS

The process of spraying a liquid can be described as composed of two phases namely

1 Breaking up the liquid into separated drops2 Directing the liquid drops onto a surface or an object to achieve the desired result

The above two phases are normally performed by the types of nozzles being used in industrial processes at the same time by means of different techniques which shall be illustrated in the followingThe continuous progress in the manufacturing techniques in recent years has requested the nozzle manufacturer to make available to the industry an always more complete range of spray nozzle types to perform the different processes in a more efficient wayIt is the interest of the engineer using spray nozzles in manufacturing processes to become familiar with the different types of nozzles which are available today and with their individual characteristics in order to be able to choose the nozzle which performs with the highest possible efficiency on a given application

Spraying a liquid through a spray nozzle can serve different purposes among which the most important are the following

1 Cooling by means of heat transfer between the product itself and the liquid running on its surface2 Washing where the water directed onto the product takes away dirt or undesired substances from the product surface3 Humidifying with sprays carrying very little liquid quantities to the product surfaceinto a chamber or into a room4 Metering the desired liquid quantity in a unit of time into the product being handled5 Applying a product on a surface as in the case of spray painting or surface pre-treatment before painting6 Increasing the liquid surface to speed up heat transfer processes or chemical reactions and many others in numerous applications throughout modern industry

It is self evident that the best results for every application are only obtained when the right choices in terms of nozzle type flow value spray angle drop dimensions and nozzle material are madeThe purpose of the following pages is to give the reader the basic knowledge which is needed to properly select a spray nozzle for a given application

Spray nozzles

a spray nozzle is a device which makes use of the pressure energy of a liquid to increase its speed through an orifice and break it into dropsIts performances can be identified and described precisely so that the design engineer can specify exactly the spray nozzle required for a given process

The relevant characteristics which identify the performances of a nozzle are the following

1 The liquid flow delivered as a function of the nozzle feed pressure2 The opening angle of the produced spray3 The nozzle efficiency as the ratio between the energy of the spray and the energy used by the nozzle4 The evenness of the flow distribution over the target5 The droplet size distribution of the spray6 The jet impact of the spray

The above characteristics will be discussed in the following pages in connection with the different nozzle types

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TECHNIQUES FOR SPRAY PRODUCTION

Many different techniques can be used to produce a spray and most of them are used today for nozzles to be applied in industrial processes Based on the different techniques the following nozzle types can be used in industrial applications to generate a liquid spray

1 Pressure nozzlesThis is the simplest type of nozzles where an orifice is opened into a chamber where the liquid to be sprayed is fed under pressure A spray is produced through the orifice with spray pattern flow rate and spray angle depending upon the orifice edge profile and the design of the inside pressure chamberTypical pressure nozzles are the flat jet nozzles series GA J GX and GY

2 Turbulence nozzlesIn these nozzles the liquid moving towards the chamber preceding the orifice is given a rotational speed component so as to open up in a conical shape as soon as it leaves the orifice edge because of centrifugal force Based on the nozzle design and the technique used to generate the rotational speed the drops produced can be confined to the cone outer surface (hollow cone spray) or be evenly distributed to fill the entire volume of the cone (full cone spray)

3 Impact nozzlesHere the desired spray shape is obtained producing an impact of the liquid jet onto a properly designed surface The liquid jet is subsequently changed into a fluid lamina and then broken into drops with the desired spray pattern after leaving the nozzle edge

4 Air assisted atomizersFine and very fine sprays can be obtained by means of air assisted atomizers working upon various different principles More detailed information about air assisted atomizing can be found in our Catalogue Air assisted atomizers (ordering code CTG AZ18)

LIQUID SPRAY AND SPRAY NOZZLES Liquid spray

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FULL CONE PATTERN

In a full cone spray the droplets are distributed into a volume which is limited by a cone having its origin point at the nozzle orifice Such spray pattern is commonly used in a large variety of industrial processes since it is the one which allows to distribute in an even way the water flow onto a surface the full cone spray pattern is therefore useful as a typical example to evenly spray cooling liquid on a still surface Another typical use is to distribute liquid droplets within a certain volume like for example evenly distributing water droplets in the inside volume of a cooling tower

Because of the wide number of processes performed by means of full cone nozzles the original shape has evolved into a range of specialised types where the full cone spray pattern or a pattern similar to a full cone one is obtained by different techniques

Standard full cone (turbulence nozzle)These nozzles use a specially shaped vane placed at the nozzle inlet to give a rotational speed to the fluid flowing through the nozzleBecause of the rotational speed of the fluid water exiting the nozzle orifice is subjected to centrifu-gal force and opens up in the shape of a full coneThe extent of the angle of the cone is a function of both exit speed (created from the inlet pressure) and the internal design of the nozzle It can vary in practice from 15deg to 120deg

These nozzles can be also produced as square full cone nozzles where the square shape of the pyramidal spray is obtained by a special design of the outlet orificeTwo important details have to be noted from the system designer when using these type of noz-zles

the spray angle is measured on the side of the square sectionbullthe square section of the spray rotates within the distance from the nozzle orifice to the bulltarget area

Spiral full cone (deflection nozzle)This is not properly a full cone but rather a continuous liquid curtain evolving with the shape of a spiral inside a conical volume The disadvantage of a scarcely even distribution is compensated by an exceptionally good resistance to plugging which makes this nozzle the best choice in those applications where safety or system reliability are the prime concern eg fire fighting systems

Multiple full cone (turbulence nozzle air atomizer)This spray pattern is used in two cases that is

1 When a wide spray angle is to be reached with nozzles which inherently can only produce a narrow one or in such cases where small size droplets and rather high capacities are required Therefore several nozzles are grouped in a cluster with different spray directions the resulting spray pattern occurs from the additional group of single nozzle sprays and the droplet size of the spray remains the same as one of single nozzle It must be noted that a smaller nozzle will normally make smaller drops as compared to a larger size nozzle of the same type operating under the same conditions

2 When it is necessary to obtain a wide angle jet using nozzles which inherently deliver a lim-ited angle spray In the case of a wide angle air atomizer for example the droplet distribution is obviously not homogeneous and the result is rather a number of small angle sprays with different directions but still the liquid is atomized towards all the parts of the volume to be treated

LIQUID SPRAY AND SPRAY NOZZLES Spray nozzle types

Standard full cone

Spiral full cone

Multiple full cone

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FLAT JET SPRAY PATTERN

In a flat jet spray the liquid droplets are sprayed in the shape of a flat liquid layer with different thickness according to the principle used to generate the spray A flat jet spray nozzle serves the purpose of spraying onto a surface or an object moving in a transverse direction with respect to the one of the jet surface a typical example being the nozzles in a car washing tunnel The vast majority of flat spray nozzles used in the industry work according to one of the following principles

In line flat jet (pressure nozzle)This is the general purpose flat jet nozzle where the liquid enters the nozzle in line with the axis length and is fed to a pressure chamber from where it is ejected through the nozzle orifice Flow value and spray angle are determined respectively from the orifice cross section and the orifice edge profile

In line straight jet (pressure nozzle)These nozzles can be considered a special kind of flat jet nozzle with naught degree spray angle They are designed to produce a sharp stable stream with powerful impact on a given point and serve normally to perform cleaning processes or to cut soft materials

Spoon flat jet (deflection nozzle)In this type of nozzle the liquid is fed under pressure to a round outlet orifice and then deflected onto a smooth profiled surface so as to assume a flat jet shape This sophisticated design is of advantage since it offers a stronger jet impact using the same feed pressureHigher efficiency comes from the very little energy required to just change the direction of the liquid flow this being the only energy required to generate the flat jet

HOLLOW CONE SPRAY PATTERN

A hollow cone spray pattern consists of droplets concentrated onto the outer surface of a conical shape volume with no droplets contained in the inside of the conical jet shape These nozzles are normally used for smoke washing or gas cooling applications in several industrial processes

Hollow cone (turbulence nozzle)These nozzles use a tangential injection of liquid into a whirling chamber to generate centrifugal forces which break up the liquid vein as soon as it leaves the orifice Precisely designed orifice profiles making use of the Coanda effect provides the ability to obtain very large spray angles

Hollow cone (deflection nozzle)A hollow cone can also be obtained taking a liquid flow to change direction onto a properly designed surface in order to break the liquid into droplets and distributing them as a hollow cone spray patternThis kind of nozzle is mainly used for applications in dust control and fire fighting systems

LIQUID SPRAY AND SPRAY NOZZLES Spray nozzle typesLI

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PNR CODING SYSTEM

As any other industrial product spray nozzles need to be precisely identified by means of a code in order to avoid mistakesPNR coding system has been designed with the following requirements in mind

Codes must be easily processed by a computer in ascending orderbullCodes must describe completely the product without any need for additional descriptionbullCodes must show to the user the basic specifications of the nozzle in order to ease the search in the cataloguebull

We have therefore determined our coding system described as follows

LIQUID SPRAY AND SPRAY NOZZLES Spray nozzle coding

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AA U X YB312 305

Thread type or other connection

Special features

Nozzle material code (see below)

The three digits give the nozzle capacity in lpm at 3 bar according to rank value

Rank of flow value see table below

Nozzle spray angle see table below

Nozzle type as described in the catalogue pages shown in ascending order

Nozzle tables report on a blue background the nominal flow value measured at 30 barFlow values at different pressures have been calculated

These codes serve as an indication onlyBased on different types of nozzles their significance can occasionally be different

CAPACITY RANK

Rank Flow digits Actual flow (lmin)

0 0 490 049

1 1 490 490

2 2 490 490

3 3 490 490

4 4 490 4900

SOME SPRAY ANGLE CODES (DEGREES)

A = 0 L = 40 T = 80

B = 15 M = 45 U = 90

C = 20 N = 50 J = 110

D = 25 Q = 60 W = 120

F = 30 R = 65 Y = 130

H = 35 S = 75 Z = 180

A1 Carbon steel D6 Glassfibre reinforced PP L2 Incolloy 825

A2 High speed steel D7 High density polyethilene L8 Hastelloy C276

A8 Zinc coated steel D8 Polyvinylidenefluoride (PVDF) P6 Acr But Styrene (ABS)

A9 Nickel coated steel E0 EPDM P8 EPDM 40 Shore

B1 AISI 303 Stainless steel E1 Polytetrafluorethylene (PTFE) T1 Brass

B2 AISI 304 Stainless steel E2 PTFE (25 glassfibers) T2 Brass chrome plated

B21 AISI 304 L Stainless steel E31 Acetalic resin (POM) T3 Copper

B3 AISI 316 Stainless steel E7 Viton T5 Bronze

B31 AISI 316 L Stainless steel E8 Synthetic rubber (NBR) T8 Brass nickel plated

C2 AISI 416 Stainless steel hardened F5 Ceramic T81 Brass electroless nickel plated

D1 Polyvinylchloride (PVC) F31 Ruby insert 303 body V1 Aluminum

D2 Polypropylene (PP) G1 Cast iron V7 Aluminum electroless n plated

d3 Polyamide (PA) H1 Titanium

D5 Talcum filled Polypropylene L1 Monel 400

NOZZLE MATERIAL CODES

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LIQUID SPRAY AND SPRAY NOZZLES Computerized fluid dynamics

The customers demand for an always higher efficiency requires to use not only the best tooling but in addition control instruments and design methods always more sophisticated like for example new software for obtaining the velocity distribution of a fluid flowing through a conduit

These software programs require that the geometry of the inner con-duit to be geometrically defined and in addition the process conditions ( pressure temperature fluid capacity ) and the fluid properties ( specific weight viscosity ) to be Introduced

Based on the above data it is pos-sible to obtain a very precise dis-tribution for the velocity value in each single point of the conduit both under numeric form and flow diagramsThese Information make it possi-ble as an example to minimize the flow turbulence and consequently to Increase the nozzle efficiency through an increase in the fluid exit velocityThis is of basic Importance for some kind of nozzles for example those nozzles required to supply an high impact jet when performing descal-ing processes in a rolling millBy trial and error it is also possible to eliminate problems like jet Instability or cavitation

The overall process efficiency in the flow path before the nozzle can also be considered which often results into the design of geometry modifi-cation or the Introduction of special flow improving profiles along the conduit

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The diagram on the right shows the idealization of the process generating the droplets while the water jet exiting the nozzle is breaking up The theoretical model whose exactitude seems to be confirmed by scientific research considers that the liquid flowing through the nozzle and past the orifice edge evolves into a liquid lamina This lamina because of instability induced by aerodynamic forces breaks up first into elongated ligaments more or less cylindrical and later into droplets

Taking the above process as a guideline one can easily appreciate that the average droplet diameter is some what related to several factors like

1 The thickness of the lamina itself2 The evenness of the lamina 3 A steady flow and break up process

For what has been said above and limited to hydraulic nozzles the system designer looking for fine droplet sprays should consider that the following results can be expected

Impact nozzles best

Centrifugal hollow cone nozzles multiple full cone nozzles good

Turbulence nozzles fair

Centrifugal Vaneless full cones worst

The above choice is obviously based on the droplet generation process which changes from one nozzle type to another and allows to forecast which type is best fro the applicationAn additional consideration of interest is that the expected droplet size changes for the same type of nozzle with the nozzle size it is possible to generate smaller drops spraying the same water quantity at the same pressure using a greater number of smaller nozzles

In cases where energy requirements are not a problem or where a specified small droplet diameter is required the smal-lest droplets can be obtained by means of an air assisted atomizerHere the shear action of a high speed compressed air flow is used with several different techniques to obtain a value for SMD (Sauter Mean Diameter) of 50 microns and less

LIQUID SPRAY AND SPRAY NOZZLES Spray generation

Theoretical Mechanism of droplet generation

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SLIQUID SPRAY AND SPRAY NOZZLES Droplet spectrum

The atomization of a liquid by means of a compressible fluid like air steam or a gas is defined pneumatic two-phase or twin-fluid atomization Many industrial processes require the availability of finely atomized droplets and the techniques to produce atomized jets have been largely improved in the recent years In addition more sophisticated process techniques have incre-ased the demand for a precise definition about the characteristics of the spray and are now available to the design engineer Since many years PNR can supply upon request complete documentation containing test reports about the more interesting and additional information which are described below for all PNR products

Laser Interpherometer Test (By Pdpa)

PNR droplet size test reports are performed by means of a Laser Interpherometer (Phase Doppler Particle Analyzer) where two laser beams cross in a given point of the spray and define a test probe area Droplet flying through the probe area cause a light scatter which is picked up by the instrument receiver and processed through a computer in order to obtain relevant information about the spray characteristics

Report information

Report information is made of data printed on three pages where the first page contains the most interesting data which make possible to base process calculations upon precise data about spraying degrees process efficiency and jet behavior in operational ambiance These pages contain the Sauter Mean Diameter value whose knowledge is of special importance in heat exchange calculations about evaporative gas cooling processes since it gives the possibility of evaluating the exchange surface obtained by atomizing for a given liquid volume

The upper picture at page 18 referring to atomizing water by means compressed air shows two following histograms

bull Distribution curve of droplet diameter (micron)

bull Distribution curve of droplet velocities (mps)

and the below described values

bull Arithmetic Mean Diameter (D10)

bull Surface Mean Diameter (D20)

bull Volume Mean Diameter (D30)

bull Sauter Mean Diameter (D32)

ARITHMETIC MEAN DIAMETERThis is a diameter value which multiplied by the local num-ber of droplets in the sample equals the addition of alI droplets diameters

SURFACE MEAN DIAMETERThis is the diameter of such a droplet whose surface mul-tiplied by the total droplets number equals the sum of alI droplets surfaces

VOLUME MEAN DIAMETERThis is the diameter of such a droplet whose volume mul-tiplied by the total droplets number equals the sum of all droplets volumes

SAUTER MEAN DIAMETERThis is the diameter of such a droplet whose volumearea ratio equals the ratio between the sum of alI droplet volu-mes divided by the sum of alI droplet surfaces

D10 = Σ i ni di

Σ i ni

D20 = Σ i ni di

2

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D30 = Σ i ni di

3

Σ i ni

D32 = Σ i ni di

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AttemptsDroplet number crossing probe area during test time This includes both validated and not validated droplet

Correct Count Criteria A mathematic correction is applied to validate droplets which cross Probe Area in a peripheral belt or to droplets without a perfect spherical shape so that alI validated droplets parameters are homogeneous (This correction is necessary so that there is direct proportionally between laser beam phase and droplet number diameter)

Number Density It is the number of droplets passing through probe area within test time

Probe areaThis is the area where the two laser beams are crossing so determining the probe area AlI droplets intersecting probe area are checked droplets which respect given parameters for shape are taken as valid droplets and make up the sample whose size and velocity parameters are reported

ValidationsDroplets accepted based on given shape parameters to make up for test sample

Velocity MeanDroplets distribution speed histogram (ms)

Volume Flow RateIt is the volume measured in cubic centimeter per second of the validated droplets making up for the sample

Volume FluxIt is the flow rate per specific area measured in cubic centimeter per second and square centimeter of the validated droplets making up the sample

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LIQUID SPRAY AND SPRAY NOZZLES Droplet spectrum

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SLIQUID SPRAY AND SPRAY NOZZLES Droplet spectrum

PNR can supply upon request complete documentation con-taining test reports about the aforementioned parameters and additional information for all PNR atomizersThe diagrams beside show the distribution of droplet diameters and droplet velocities of a spray under test as available to our customers

In the photo beside a test being performed at our laboratoriesWe use a computer driven laser interpherometer to detect and record the spray parameters while fluid capacities and feed pressure values are monitored through high precision instru-ments

IMPORTANT NOTE

The droplet size values measured with a PDPA instrumentation are representative of a well specified volume inside the spray and taking measurements in a different volume they can be considerably differentA correct spray droplet size characterization requires then not only tests being performed in several volumes within the spray but also that those measure volumes are selected with regard to the process the droplets are expected to performAs an example the droplet characterization of a spray should define how many volumes have been tested and which are the coordinates of each single test volume in relation to the nozzle orifice

Most of the times pretending to describe the droplet spectrum of a spray nozzle at a given pressure with only one diagram is therefore not correct

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In order to calculate the discharge flow rate from a given nozzle the Bernoulli law shall be used which says that the energy of a liquid flow remains unchanged over alI the sections of the flow Friction and turbu-lence losses are neglected which is reasonable for our purposes if the cal-culation is performed over two sections not too far away from each other

The Bernoulli law can be written as follows

Therefore if we consider two sections of the same pipe section A and section B we can write that the flow energy remains constant in the form

If we finally consider that the two above sections are taken immediately before and immediately after the nozzle outlet orifice being

ZA = ZB PB = 0 (PA is a differential pressure referred at the atmosphere pressure)

VA cong 0 negligible as compared to VB (for orifice diameter much smaller than the duct diameter)

we shall come to the formula

When we define a new constant k to include the value of the nozzle orifice outlet area (A) then we come to the following equation which says that for a nozzle spraying into a room at ambient pressure the exiting flow is proportional to the feed line pressure

Considering now two different pressure values for the same nozzle since k is a constant quantity we can write that

and derive from the above an equation that makes it possible to calculate the nozzle flow value at any given pressure value once the flow value at another pressure value is known

The energy of a given liquid flow crossing a given pipe section is composed of three parts namely

P Pressure energy of liquid particle per volume unit

1 ρV2 Kinetic energy of liquid particle per volume unit2ρgz Potential Energy of liquid particle per volume unit

Where ρ = density of liquid g = gravitational acceleration

z = height respect to one plane of reference V = liquid velocity

PA = 1 ρVB 2 rArr

2

K = Q rArr

PK =

Q1 = Q2 rArr

P1 P2

Q = A V rArr

Q = A x C x P rArr

1 P + 1 ρV2 + ρgz = E

2

VB = 2 PA rArr ρ

Q1 = P1

Q2 P2

3 V = C P

4 Q = K P

2 PA + 1 ρVA 2 + ρgzA = PB + 1 ρVB

2 + ρgzB 2 2

EXIT VELOCITY DEPENDS UPON PRESSURE

NOZZLE CAPACITY DEPENDS UPON PRESSURE

NOZZLE CAPACITYAT A DIFFERENT PRESSURE

5 Q2 = Q1 P2

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SLIQUID SPRAY AND SPRAY NOZZLES Nozzle flow rate

The Equation (5) has been obtained after having simplified the real problem neglecting several factors like for examplebullInmostofthepracticalapplicationcasestheflowisturbulentandnotlaminarbullFrictionlossestendtostronglyincreasewithliquidvelocitybullDependinguponthetypeofnozzleadifferentpercentageoftheavailableenergyisusedtobreakupthejetandgivethe

desired spray pattern and spray angle

For the above reason equation (5) gives reliable results if used in a limited pressure range around the pressure value where the flow rate is known with this pressure range depending upon the type of nozzleOur experience has shown that one can expect the error in the calculated value to be lower than +- 6 for pressure values ranging from 13 to 3 times the reference value

As an example a nozzle rated for 10 lpm at 3 bars would have according to equation (5) the following flow valuesa 1 bar 577 lpma 9 bar 173 lpmin real conditions it can be expected the flow rate values to beas high as 61 lpm a 1 baras low as 162 lpm a 9 barAbove considerations are to be used as a guideline only because of the many factors influencing real operations which have not been considered here for example liquid temperature viscosity and density

Possible percentage deviation from theoretical flow rate values

Also above mentioned percentage errors have to be understood for nozzles using part of the flow energy to produce wide angle spray patternsLower values can be expected for narrow angle nozzles impact nozzles and straight jet nozzles Laboratory tests and diagrams showing real flow rate values for each nozzles are used in practice when a precise result must be available

Nozzle discharge coefficient

With reference to equation (4) if we consider the pressure value to be equal to 1 (P = 1 bar) the flow rate of the nozzle becomes

K is a parameter widely used in the fire fighting industry

In some instances reference is made to the nozzle discharge coefficient or shortly to the nozzle coefficient to indicate the nozzle flow rate for a unitary pressure Of course for a given pressure value Pn the flow value will be

+ 6

+ 3

- 3

- 6

CAPACITY AT A GIVEN PRESSURE VALUEWHEN K KHOWN

NOZZLE CAPACITYFOR P=1 barQ = K P = K 1 = K

6 Qn = K Pn

21wwwpnr-nozzlescomCTG SH 07 EU

The spray angle is the opening angle which the nozzle jet of droplets forms at the moment when it leaves the nozzle orifice and it is one of the fundamental parameters for the choice of a given nozzleIn fact the amplitude of the spray angle determines in connection with the distance between the nozzle orifice and the target to be covered the spray coverage and the density of liquid sprayed with respect to the cover area See our Catalogue for description of the different nozzle spray patterns The table at the bottom of the page gives the theoretical spray width based on the nozzle spray angle and the distance from the nozzle orifice It is important to note that because of several factors like gravity forces and aerodynamic drag the spray angle value cannot be maintained but in in a limited distance normally up to 300 mm from the orifice For air assisted atomizers it is improper to use the term spray angle since no precise value can be measured Therefore the values given by Catalogues are to be intended as guidelines only

THEORETICAL SPRAY COVERAGE

at various distances from nozzle orifice

Spray 50 100 150 200 250 300 400 500 600 700 800 1000 Angle mm mm mm mm mm mm mm mm mm mm mm mm

15deg 13 26 40 53 66 79 105 132 158 184 211 263 25deg 22 44 67 89 111 133 177 222 266 310 355 443 30deg 27 54 80 107 134 161 214 268 322 375 429 536 35deg 32 63 95 126 158 189 252 315 378 441 505 631 40deg 36 73 109 146 182 218 291 364 437 510 582 728 45deg 41 83 124 166 207 249 331 414 497 580 663 828 50deg 47 93 140 187 233 280 373 466 560 653 746 933 60deg 58 116 173 231 289 346 462 577 693 808 924 1150 65deg 64 127 191 255 319 382 510 637 765 892 1020 1270 70deg 70 140 210 280 350 420 560 700 840 980 1120 1400 75deg 77 154 230 307 384 460 614 767 921 1070 1230 1530 80deg 84 168 252 336 420 504 671 839 1010 1180 1340 1680 90deg 100 200 300 400 500 600 800 1000 1200 1400 1600 2000 95deg 109 218 327 437 546 655 873 1090 1310 1530 1750 2180 100deg 119 238 358 477 596 715 953 1190 1430 1670 1910 2380 110deg 143 286 429 571 714 857 1140 1430 1710 2000 2290 2856 120deg 173 346 520 693 866 1040 1390 1730 2080 2430 2771 3464 130deg 215 429 643 858 1070 1290 1720 2150 2570 3002 3431 4289

WhereASCbull = Actual Spray CoverageTSCbull = Theoretical Spray CoverageASAbull = Actual Spray AngleTSAbull = Theoretical Spray AngleL bull = Spray Distances

TSC = 2 middot L middot ctan ( TSA )2

7

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S

LIQUID SPRAY AND SPRAY NOZZLES Spray angle

22 wwwpnr-nozzlescom CTG SH 07 EU

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SLIQUID SPRAY AND SPRAY NOZZLES Spray angle

Depending upon the nozzle design variations of feed pressure may have a great influence on the spray angle valueGenerally with increasing pressure turbulence full cone nozzles will produce narrower angles flat jet nozzles will show a wider angle spray while nozzles working on the deflection principle like spiral nozzles and K style flat jet nozzles will be less affected by pressure changesAll nozzles will not function properly with very low pressure values (from 05 bar down depending upon nozzle type ) with a marked decay in performance larger drops not well defined spray pattern lower spray angle values

The above pictures show spray angles for different nozzles and different pressure valuesShould your application strictly require that a given value of the spray angle is obtained under a given pressure value or pressure range of values please obtain a test report from our laboratories

Full cone nozze DDW 2235

Flat jet nozzleJCW 2245

Spiral nozzeECW 2230

Pressure 05 bar Pressure 05 bar Pressure 05 bar

Pressure 3 bar Pressure 3 bar Pressure 3 bar

Pressure 10 bar Pressure 10 bar Pressure 10 bar

Photo obtained with 120000s flashlight

picture 1

picture 4

picture 7

picture 2

picture 5

picture 8

picture 3

picture 6

picture 9

NotePicture 2 shows clearly the droplet generation mechanism as described at page 15

23wwwpnr-nozzlescomCTG SH 07 EU

Terms and definitions

A very important characteristic of a spray nozzle is a parameter called Spray Distribution which gives a precise information about how evenly the drops of the spray are distributed onto the area covered by the sprayIt is self understood that normally it is preferable to obtain the most even distribution possibleIn the past this was done through the visual examination of a diagram reporting the quantity of water contained for example in glass pipes aligned onto the spray coverage areaPnr has determined to obtain such a result in a scientific way through high technology instrumentation as shown in the pictures below showing one of our patternators and a typical distribution diagram

Now to the spray geometry and some definition letrsquos consider a nozzle with a capa-city Q at the pressure PAt every value for distance H which we call height of spray we can define a plane lsquonrsquo normal to the nozzle axis on which a line can define the intersection of the spray onto the planeThe area covered by the spray on the plane lsquonrsquo has a surface S depending from the following parametersa) Spray pattern Fb) Opening angle of the spray αc) Height of the spray H

We can then write S=S( F α H )

In case of a full cone nozzle S is a circle with diameter C and S = 0785 C2

The capacity of the nozzle flows through the surface S but each smaller area inside the surface S will probably have a different value for the flow passing through itWe introduce then the value of Specific Capacity q

1) Specific Capacity

The function q depends upon the single point (xy) in the section S and then

Determining the function q is however very expensive therefore in practice two different functions are used which give in most occurrences sufficient information

2) Linear Distribution

3) Angular distribution

part Qpart x

qx =

Diagram 1

q = limΔS 0

ΔQΔS

q = = f (x y H)part Qpart S

part Qpart φ

qφ =

ΔQ is the liquid flowing through a surface ΔSwhere ΔS is a fraction of the surface S

x and y are the local coordinates in the section planewhere H is the distance of the test surface from the nozzle orifice

partQ is the variation in capacitywhere partx is the variation of a generic linear coordinate

partQ is the variation in capacitywhere partφ is the variation of a generic angular coordinate

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LIQUID SPRAY AND SPRAY NOZZLES Spray Distribution

24 wwwpnr-nozzlescom CTG SH 07 EU

LIQUID SPRAY AND SPRAY NOZZLES Spray Distribution

Values extracted from these functions can characterize the spray and allow for drawing the diagrams defined as Distribution Curves

Analyzing the above curves it is possible to determine the type of water distribution along the spray coverage and the type of spray pattern like for example a full cone hollow cone flat or straight jet spray

Distribution measurement

The water distribution along the spray coverage is determined by means of an instrument called Patternator

A patternator consists of the following parts 1) Liquid collector2) Cell block3) Measure block4) Unloading block

The nozzle is above the instrument and it is orienta-ted in such a way the jet is collected into the upper liquid collectorThe liquid collector can be linear ( diagram 5 ) or round ( diagram 6 ) according to the test being runFrom the single parts in the collector the liquid is sent into the corresponding cells below (2)

The Measure block (3) determines the liquid content in each single cell then the unloading block (4) empties the instrument sending the liquid to the collection drain

There are two types of patternators

Analogic1 the different levels of liquid is visible through the transparent walls of the cells or pipes sometimes containing some kind of floating balls and a picture can be taken with a cameraDigital2 Delivering an automatic reading of the values in the cells the values being supplied as an electronic file from which a distribution curve can be easily obtained

Diagram 2 Linear distribution Diagram 3 Angular distribution

Diagram 4

Diagram 6 Circular collectorDiagram 5 Linear collector

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25wwwpnr-nozzlescomCTG SH 07 EU

LIQUID SPRAY AND SPRAY NOZZLES Spray Distribution

Normalizing distribution curve

The values obtained from the cells of the patternator showing the water quantity collected in the single cells allow for preparing a Distribution curve which can be given as a single line curve or as a row of vertical barsThese resemble the liquid level collected into the glass pipes of the old type instrumentation

The curves prepared based on the liquid level in the single cells still are not precise they depend in fact from the testing time the longer this time the larger the liquid quantity sprayedTo eliminate the influence of time from the test it is necessary to transform the effective curves to normalized curves

Normalized4) linear distribution

Normalized5) angular distribution

Please note that Maximum value is the one belonging to the series of values measured in the cellsIn addition to the distribution it is possible to normalize the intervals to with the following formulas

Normalized 6) linear interval

Normalized 7) angular interval

The linear normalized amplitude is defined inside an interval [-1 +1]The angular normalized amplitude is defined inside an interval [0+2π]

Diagram 7 Effective linear distribution curve Diagram 8 Effective angular distribution curve

Mx

xx q

q=δ

N

πθ

2=Δ

Diagram 9 Normalized linear distribution curve Diagram 10 Normalized angular distribution curve

qx is the linear distribution of a generic cellwhere qx

M is the maximum linear distribution measured

qφ is the linear distribution of a generic cellwhere qφ

M is the maximum linear distribution measured

2 is the normalized linear amplitude of the spraywhere N is the number of active cells (active cells = cells containing liquid)

2π is the normalized angular amplitude of the spraywhere N is the number of active cells (active cells = cells containing liquid)

Mq

q

ϕ

ϕϕδ =φ

φ

φ

2

N=Δλ

2

N=Δλ

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26 wwwpnr-nozzlescom CTG SH 07 EU

Evaluation of spray distribution

To evaluate distribution curves it is necessary to take three properties into consideration

a) UNIFORMITY b) MONOTONY c) SIMMETRY

As described in the following diagrams and definitions

a) UNIFORM A distribution that minimizes the ratio AAdeg

b) MONOTONE Is a distribution with a curve which grows on the left side and decreases on the left side c) SYMMETRIC Is a distribution which minimizes the Ratio A+A-

Based on the above definitions the following curves show the ideal situations

The three properties are then evaluated by means of the following parameters

1 Integral uniformity

2 Incremental uniformity

3 Symmetry index

Complete details about the above formulas and definition can be found in our Technical Bulletin REL 080002 which shall be released from our Technical Department on request

Diagram 12Normalized and monotone distribution

Diagram 11Normalized and monotone distribution

Diagram 14Ideal monotony

Diagram 15Ideal symmetry

Diagram 13Ideal uniformity

1001 sdot=MA

AU

1002

2 sdot=lowastσ

U

1001

sdot⎥⎦

⎤⎢⎣

sdotminus=

lowast

lowast

δ

ε

NI S

sum minus=lowast

M

i iδδε

A is the area included in the normalized curvewhere Adeg is the rest of the area included in the 2x1 rectangle

Left side is the area -1 0where Right side is the area 0 +1

A+ is the area included below the curve on the right sidewhere A- is the area included below the curve on the left side

where

where δrsquo is the value of normalized liquid content in the symmetric cell N number of cells containing liquid in half of the diagram

lowast

lowast sum=

N

N

i i

δ

δ N Number of cells containing liquid

A area included below the curve AM area included below the ideal curvewhere

sum minus= +lowast

1

N

i ii δδσ

N Number of cells containing liquid

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SLIQUID SPRAY AND SPRAY NOZZLES Spray Distribution

27wwwpnr-nozzlescomCTG SH 07 EU

Liquids are characterized for their property of undergoing continuous deformation when subjected to shear stress The property of fluids (liquids or gases) to resist flowing due to the existence of internal friction within the fluid is called visco-sity

Thus if we imagine the different layers of fluid sliding one over the other with friction we can imagine that viscosity is defined the force required to move a unit area of fluid for a unit distance Viscosity is measured with many different systems among which the most used are the following

The following table shows correspondences between the most used viscosity units

The viscosity value of a liquid depends upon the temperature therefore the viscosity value must always be given with reference to a temperature value The viscosity of water (20deg C) is 1 Centipoise and 1 Centistoke since water mass density = 1

KINEMATIC SAYBOLT SAYBOLT ENGLER VISCOSITY UNIVERSAL FUROL

Centistoke Sq feetsec SSU SSF Degrees

100 000001076 310 --- 100

500 000005382 424 --- 137

1000 00001076 588 --- 183

1566 00001686 80 --- 245

2052 00002209 100 --- 302

2515 00002707 120 --- 357

4295 00004623 200 --- 592

1080 0001163 500 523 1460

1510 0001625 700 720 2044

1942 0002090 900 921 2628

3023 0003254 1400 143 4090

3885 0004182 1800 183 5260

5394 0005806 2500 254 7300

10788 001161 5000 509 146

15103 001626 7000 712 204

19419 002092 9000 916 263

32365 003483 15000 1526 438

METHOD UNIT DIMENSIONS NOTES

1 Dynamic viscosity(Absolute viscosity) Poise ML T-1 Poise = 100 Centipoises = (1 dyne per seccm2)

2 Kinematic viscosity Stoke L2 T-1 1 Stoke = 100 Centistoke = (cm2sec)Kinematic viscosity = Dynamic viscositydensity

3 SSUSSF

One of the most widely instruments to determine is the Saybolt viscosimeter which measures the time in seconds required for a fixed volume of a given liquid to flow through an orificeSSU = Seconds Saybolt Universal relates to a smaller orifice for less viscous liquidsSSF = Seconds Saybolt Furol relates to a larger orifice for more viscous liquids

LIQUID SPRAY AND SPRAY NOZZLES Influence of liquid viscosity

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28 wwwpnr-nozzlescom CTG SH 07 EU

Viscosity influence on nozzle flow rate

AlI nozzle Catalogue data refer to spraying water (water cinematic viscosity is equal to 1 Centistoke)A liquid with viscosity higher than water will require more energy to be pumped and sprayed and will flow with lower velocity at the same pressure and this will cause a reduction in the turbulence of the flow For the above reason nozzles working on the turbulence principle like normal full cone nozzles and whirl hollow cone nozzles will show an increase in capacity while spraying liquids with viscosity higher than water This increase is very consistent for small size nozzles where the small radius of the whirl chamber tends to cause high turbu-lence in the flow and tends to diminish and to disappear for nominal capacity valves (capacity values at 3 bar) larger than 15 liters per minute

The graph below shows for a liquid with a viscosity of about 4 Centistokes typical variations in the nozzle flow rate value for different values of the nozzle whirl chamber diameter As it may be seen these variations can be neglected in most practical applications where nozzles with whirl chamber diameters well over 3 mm are used

For other types of nozzles not working on the turbulence principle the increase on viscosity will simply reduce the liquid exit velocity at the orifice thus causing a decrease in capacity Experience shows that this decrease ranges between 3 and 6 of nominal water capacity that is to say that the variation introduced is in the same order of magnitude as the nozzle flow rate toler-ance

Viscosity influence on nozzle spray angle and spray pattern

With reference to the theory of jet break-up and droplet information it can be easily imagined that spraying a liquid more viscous than water is a difficult task

Al the properties of the spray tend to worsen therefore one can expectA higher value for the minimum operating pressure that is the pressure value which allows for obtaining a well defined 1 spray with the expected spray angle A worse spray distribution since the viscous behavior of the liquid makes it more difficult to pro-duce fine droplets and 2 to distribute them evenly with the desired spray pattern A narrower spray angle It is difficult to give guidelines since results on different nozzles at different pressures and with 3 different liquids are scarcely predictableHowever our experience shows that in many cases the use of impact nozzles can give acceptable results where all other type of nozzle failsA laboratory test or a field test are stili the safest way to obtain sound results

50

45

40

35

30

25

20

15

10

5

0 2 3 4 5 6 7 8 9

Increase Flow rate vs Whirl Chamber Diameter

Incr

ease

Flo

w R

ate

[mm

]

Whirl Chamber Diameter [mm]

LIQUID SPRAY AND SPRAY NOZZLES Influence of liquid viscosityLI

QUID

SPR

AYAN

D SP

RAY

NOZZ

LES

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With reference to the Bernoulli Rule as exposed in page 6 one can say that the pressure energy of the liquid flow at the nozzle inlet is transformed totally (minus some losses due to friction inside the nozzle) into liquid velocity at the nozzle orificeCatalogue figures give nozzle capacities when spraying waterIf the specific gravity or density of the liquid is different from that of water the available pressure energy will produce a different liquid velocity at the nozzle orificesIn other words a given quantity of energy will spray always the same quantity of liquid mass but different volumes (flow rates) according to the liquid specific gravity or density

Therefore a liquid heavier than water will exit the nozzle with a lower velocity at lower flow rate while to the contrary a liquid lighter than water will be sprayed at higher velocity at higher flow rate

The following formula is to be applied

The table below gives the value of a correction factor to obtain the flow rate of a liquid with different specific weight as water

WhereQL Liquid flow rateQW Water flow rateF Correction factor

kgliter Libregallon F

06 50 129

07 58 120

08 67 112

09 75 105

10 83 100

11 92 095

12 100 091

13 109 088

14 117 085

15 125 082

16 134 079

17 142 077

18 150 075

19 159 073

20 167 071

QL = F QW8

LIQUID SPRAY AND SPRAY NOZZLES Influence of liquid specific gravity

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30 wwwpnr-nozzlescom CTG SH 07 EU

The spraying water impact of a nozzle depends on several factors and more precisely spray distribution pattern and spray angle The first step to calculate the impact value which is usually expressed in Kilograms per square centimeter is to deter-mine Total Theoretical lmpact Value using the following formula

The obtained value has to be multiplied by the Total Theoretical Impact per Square Centimeter Coefficient (E)The final value is the Spraying Liquid Impact expressed in kgpcm2Of course not alI the energy of the fluid vein is transferred to the impact point

A part of this energy sometimes a considerable part goes to obtain a desired spraying angle by having the liquid vein acquire a high rotational speed inside the whirl chamber The highest value of impact is obtained with straight jet nozzle and the value can be calculated multiplying spraying pressure per 19The tables below containing the Total Theoretical Impact sqcm coefficient values for different spray pattern nozzles for a dis-tance of 300 mm

[kgpcm2]

TOTAL THEORETICAL IMPACT PER SQ CM COEFFICIENT AT DISTANCE OF 300 MM (E)

Spray Flat jet nozzle Spray Full cone nozzle Spray Hollow cone nozzle Angle Angle Angle

15deg 0300 15deg 0110 25deg 0180 35deg 0130 30deg 0025 40deg 0120 50deg 0100 50deg 0010 65deg 0070 65deg 0004 60deg80deg 001002 80deg 0050 80deg 0002 100deg 0001

WhereQ is the flow rate at working pressure in lpmP is the pressure value in kgpcm2

[kgpcm2]TTI = 0024 Q P

SLI = E TTI

9

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SLIQUID SPRAY AND SPRAY NOZZLES Jet impact

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Jet impact diagram

A further parameter to characterize the performance of a spray nozzle is the distribution of the jet impact force which could be derived by means of mathematical methods from the values of the spray distribution onto the surface covered by the spray but which can more easily be measured with the help of specifically designed instrumentation

In some applications the jet impact force Is the most important parameter used to realize the required processSteel sheet descaling in a rolling mill is a typical example where the jet impact is required to take away the surface scale and obtain a perfectly even surfaceFor that reason special nozzles have been developed to perform this very task where service life impact value and spray distribution reach the values required for satisfactory resultThese test are performed in a laboratory equipped with a specifically designed instrumentation where the high pressures involved in these process can be reached which can measure the pressure values along a matrix of points distributed in the spray area covered by the nozzle

These values are supplied both in a table of values and as a 3D pressure diagram similar to those shown below

On such applications where producing high impact values in the jet is necessary it is of paramount importance that the liquid flow turbulence is kept to a minimum and therefore it is widely used to insert into the nozzle entrance devices designed to improve the operating conditions by forcing the liquid flow through straight passages with several different shapes by doing so the impact delivered by the spray is increased with the same feed pressure

One typical shape used by Pnr is shown on the right and the two dia-grams below show the impact force diagrams for the same nozzle with and without a flow straightener the reduction of flow turbulence can lead in increase of impact force often higher than 20Further improvements of course are available when the nozzle inside profile is properly designed in order to avoid sharp cross section changes and all surfaces are finished as smoothly as possible

Typical design of a Pnr flow straightener

Impact pressure diagram with flow straightenerImpact pressure diagram without flow straightener

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LIQUID SPRAY AND SPRAY NOZZLES Jet impact

32 wwwpnr-nozzlescom CTG SH 07 EU

LIQUID SPRAY AND SPRAY NOZZLES Pressure drop through a nozzle

Pressure drop through a nozzle

Some of our customers have asked us In the past which Is the pressure drop through a nozzle since they consider a nozzle one of the parts in a piping like a valve or an elbow which causes a given pressure drop along the line

The reality is different and can be easily understood when considering the Bernoulli formula [2] as given at page 19 of this manual the formula says that the total energy of a liquid flow is made from the addition of three facors

Potential energy due to elevationbullPressure energybullVelocity energybull

When we apply the formula at the entrance and at the outlet ( the orifice ) of a nozzle and we neglect the influence of turbulence losses in between we can easily see that

The potential energy variation can be neglected because of the limited dimensions of the nozzle since the distance bullbetween the nozzle entrance and the nozzle orifice plays no role-The pressure energy variation is important since the liquid pressure value falls abruptly from the pressure inside the feed bullpipe to the ambient pressureThe velocity energy variation is also consistent since the liquid is ejected from the orifice at high speedbull

In other words the pressure energy of the liquid flowing through the orifice is suddenly transformed in liquid drops velocity which is exactly what a nozzle is designed to do

This is shown from equation [3] at page 19 which allows the exit velocity from the nozzle to be calculated from the pressure inside the pipe ( we actually consider the pressure difference between the inside of the pipe and the ambient pressure in this formula )

In other words all the energy still available at the nozzle is converted into velocity or if you so prefer you have a total pressure fall The system designer shall therefore evaluate all the pressure drop between the pump outlet flange and the nozzle entrance in order to be sure that the nozzle feed pressure is sufficient to assure the desired capacity for the liquid being sprayed

parameters valuesat nozzle outlet

nozzle inlet nozzle oulet or orice

feed pressure

inlet velocity

parameters valuesat the nozzle inlet

(A)potential elevation

energy

(A)velocity ( kinetic ) energy

(A)pressure energy

ambient pressure

exit velocity

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33wwwpnr-nozzlescomCTG SH 07 EU

NOZ

ZLE

MAT

ERIA

LS

The choice of the right material for a nozzle is sometimes the most important one to do since the nozzle operating life depends upon it There are several factors to influence or shorten the nozzle operating life sometimes more than one at the same time the most important being

Wear from solid particles suspended into the liquid being sprayed1 Chemical corrosion from the liquid being sprayed 2 Chemical corrosion from the ambience outside the nozzle3 Exposure to high temperature 4 Exposure to mechanical shocks5

NOZZLE MATERIALSPnr material codes 34Properties of materials 35Mechanical properties of materials 39Chemical resistance of materials 40

NOZZLE MATERIALS

34 wwwpnr-nozzlescom CTG SH 07 EU

PNR has adopted a short code to identify construction materials for nozzles and nozzle partsHere below the most frequenty used materials

MATERIAL STANDARDS

The following standards are mentioned with reference to materials identification

NOZ

ZLE

MAT

ERIA

LS

A1 Free Cutting Steel E1 TEFLONreg (PTFE) L3 NICROFERreg 5923

A2 Carbon Steel E3 DELRINreg (POM) L4 STELLITEreg 6

A8 Zinc Plated Mild Steel E6 PERSPEXreg (PMMA) L5 HASTELLOYreg B2

A9 Nickel Plated Mild Steel E7 VITONreg (FPM) L6 HASTELLOYreg C4

B2 AISI 304 Stainless Steel E8 NBR- Sh 70 Rubber L61 HASTELLOYreg C22

B3 AISI 316 Stainless Steel E81 SANTOPRENEreg Rubber L62 ULTIMETreg

B31 AISI 316L Stainless Steel E82 KLINGERITEreg L7 NICKEL 201

B4 AISI 321 Stainless Steel E83 HYPALONreg L8 HASTELLOYreg C276

B8 AISI 309 Stainless Steel E91 Silicon L9 SANICROreg 28 SS

B81 AISI 310 Stainless Steel F12 Tungsten Carbide (TC) N1 AISI 302 Stainless Steel

C1 AISI 420 St Steel hardened F2 PIREXreg P6 ABS

C4 AISI 317 Stainless Steel F3 Rubin P7 FASIT OIL

C6 SAF 2205 Stainless Steel F4 Zapphire P8 EPDM ShA Rubber

D1 Polyvinylchloride (PVC) F5 Ceramic P9 STIROLUXreg 637

D2 Polypropylene (PP) F6 Silicon Carbide (SC) T1 Brass

D3 Polyamide (PA) G1 Cast Iron T3 Copper

D5 Powder Charged PP H1 Titanium T5 Bronze

D6 Fiberglass Charged PP L1 MONEL 400 T8 Nickel Plated Brass

D7 High Density Polyethylene L2 INCOLOYreg 825 V1 Aluminium

D8 Polyvinylidenefluoride (PVDF) L21 INCONELreg 600 V7 Aluminium ENP

STANDARD ORGANIZATION COUNTRY STANDARD CODE

AFNOR Association Franccedilaise de Normalisation France NF

AISI American Iron and Steel Institute USA AISI

ANSI American National Standards Institute USA ANSI

ASTM American Society for Testing and Materials USA ASTM

BSI British Standards Institution UK BS

DIN Deutsches Institut fuumlr Normung Germany DIN

DSIT Dansk StandardsInformation Technology Denmark DS

ISO International Organization for Standardization International ISO

JIS Japanese Institute for Standard Japan JIS

UNI Ente Nazionale di Unificazione Italy UNI

NOTEThe complete list of the Materials Codes may be requested to our Technical Service mentioning release code TGCE CODMAT

NOZZLE MATERIALS PNR material codes

35wwwpnr-nozzlescomCTG SH 07 EU

NOZ

ZLE

MAT

ERIA

LS

B1 AISI 303 STAINLESS STEEL

Chemical composition CR 1750 NI 850 S 025 Coding correspondence

Type Stainless Steel Austenitic AISI 303

Hardening Not possible BS 303 S 21

Annealing 1050 1100deg C in water DIN Wnr 14305

Welding Possible with precautions Euro X10CrNiS1809

Corrosion properties

Good resistance Atmospheric exposure food substances organic chemicalsLow resistance Chlorides reducing acids and over 800deg C

JIS SUS 303

NF Z6CN 18-09

SIS 2346

UNI XWCrNiS 1809

B3 AISI 316 STAINLESS STEEL

Chemical composition C 005 CR 170 NI 120 MO 225 Coding correspondence

Type Stainless Steel Austenitic AISI 316

Hardening Not possible BS 316 S 21

Annealing 1050 1100deg C in water DIN Wnr 14401

Welding Easy using same steel electrodes Euro X6CrNiMo17122

Corrosion properties

Good resistance Atmosphere great number of salts organic acids foodsLow resistance Solutions of reducing acids temperatures over 500deg C

JIS SUS 316

NF Z6CND 17-11

SIS 2347

UNI X5CrNiMo1712

B31 AISI 316L STAINLESS STEEL

Chemical composition C 003 CR 170 NI 130 MO 225 Coding correspondence

Type Stainless Steel Austenitic AISI 316 L

Hardening Not possible BS 316S12

Annealing 1050 1100deg C in water DIN Wnr 14404

Welding Easy using same steel electrodes Euro X3CrNiMo1810

Corrosion properties

Good resistance Atmosphere great number of salts organic acids foods salt waterLow resistance Solutions of reducing acids temperatures over 500deg C

JIS SUS 316L

NF Z2CND17-12

SIS 2348

UNI X2CrNiMo 1712

NOZZLE MATERIALS Properties of materials

36 wwwpnr-nozzlescom CTG SH 07 EU

C1 AISI 420 STAINLESS STEEL

Chemical composition C 020 CR 1300 Coding correspondence

Type Stainless Steel Martensitic AISI 420

Hardening 980deg - 1030deg C in oil BS 420 S 29

Annealing 750deg - 800deg C in air DIN Wnr 14021

Welding Possible with precautions Euro X20Cr13

Corrosion properties Good resistance Drinkable water steamgasoline oil alcohol ammonia

JIS SUS 420 J1

NF Z20C13

SIS 2303

UNI X20Cr13

C2 AISI 416 STAINLESS STEEL

Chemical composition C 012 CR 1250 S 022 Coding correspondence

Type Stainless Steel Martensitic AISI 416

Hardening 950deg - 1100deg C in oil BS 416 S 21

Annealing 750deg - 800deg C DIN Wnr ---

Welding Not possible Euro X120CrS13

Corrosion properties Good resistance Drinkable water steamgasoline oil alcohol ammonia

JIS SUS 416

NF Z12CF13

SIS ---

UNI X12CrS13

D8 POLYVINYLIDENE FLUORIDE (PVDF)

Description HIGH-MOLECULAR WEIGHT THE TOUGHEST OF THE FLUOROCARBON RESINS

Trade names amp SuppliersKYNAR (Atochem North America Inc formerly Penwalt Corporation)

SOLEF (Solvay Polymer Corporation)

Physical andMechanical Properties

Excellent resistance to abrasion and stress fatigue

Extremely pure opaque white resin

Thermal Properties UsefuI in temperatures ranging from -73 149degC (-100 300degF)Heat deflection temperature is (8090deg C at 182 Bars (176 194deg F at 264 psi)

Chemical Compatibility

Excellent chemical resistanceCan be used with wet or dry halogens most strong acids and bases aliphatics aromaticsalcohols and strong oxidizing agentsNot recommended for contact with ketones esters amines and some organic acids(fuming sulfuric acid)

NOZZLE MATERIALS Properties of materialsN

OZZL

E M

ATER

IALS

37wwwpnr-nozzlescomCTG SH 07 EU

E1 POLYTETRAFLUOROETHYLENE (PTFE)

Description FLUOROPLASTIC THAT HAVE SOME OR ALL OF THEIR HYDROGEN MOLECULESREPLACED BY FLUORINE

Trade names amp Suppliers

TEFLON TFE FEP and PFA (Dupont Polymer Products)

NEOFLON (Daikin)

FLUON (ICI Americas Inc)

SST-2SST-3 (Shamrock Technologies Inc)

Physical andMechanical Properties

Low coefficient

Low adhesiveness

Buona resistenza agli agenti atmosferici

Good weatherabilityLow resistance to creep and wear unless reinforced with glass figravebers which results in superior resistance

Thermal Properties High and low temperature stabilityHeat deflection temperatures range from 4855deg C at 182 bar (118-132deg F at 264 psi)

Chemical CompatibilityChemically inert

Totally insoluble

E3 ACETAL (ACETAL HOMOPOLYMERS AND COPOLYMERS)

Description HIGHLY CRYSTALLINE RESINS BASED ON FORMALDEHYDE POLYMERIZATION TECHNOLOGY

Trade names amp Suppliers

DELRIN (Dupont Polymer Products Corporation)

CELCON (Hoechst Celanese Corporation)

ULTRAFORM (BASF Corporation)

RTP 800 (RTP Corporation)

LUPITAL amp TENAL (Franklin Polymers Inc)

FULTRON 404 (ICI Americas Inc)

Physical andMechanical Properties

High tensile strength rigidity and esilience

High fatigue endurance

Excellent dimensional stability

Low coefficient of friction

Outstanding abrasion and wear resistance

Excellent creep resistance

Thermal Properties Heat deflection temperatures range from 110 -136deg C at 182 bars(230 - 270deg F at 264 psi) higher if glass figravelled

Chemical Compatibility

Remains stable in long-term high temperature water immersionExcellent resistance to chemicals and solvents but prolonged exposure to strong acids not recommendedNote Suitable for close-tolerance high-performance partsAvailable for machined parts or may be injection molded

NOZZLE MATERIALS Properties of materials

NOZ

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MAT

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38 wwwpnr-nozzlescom CTG SH 07 EU

L6 HASTELLOY C4

PHYSICAL AND MECHANICAL PROPERTIES CHEMICAL COMPOSITION CORROSION RESISTANCE

R = 650800 Mpa C = 0015 max

Very good against pitting and tensile-corrosion specially in oxydizing atmosphereResistance in welded joints definitely better than C 276 lower than C22

Rp02 = 250470 Mpa Ni = 65

HRB = 90 Cr = 160

Mo = 155

W = --

Fe = 3 max

Ti = 05

Co = 2 max

APPLICATIONSRecommended for applications with strongly oxidizing atmosphere

L61 HASTELLOY C 22

PHYSICAL AND MECHANICAL PROPERTIES CHEMICAL COMPOSITION CORROSION RESISTANCE

R = 700800 Mpa C = 001 max

Excellent performances with oxydizing atmospheres as well as for pitting and tensile-corrosion conditionsVery good resistance in reducing atmospheres and for welded joints

Rp02 = 360420 Mpa Ni = 56

HRB = 93 Cr = 22

Mo = 13

W = 3

Fe = 3

Ti = --

Co = 25 max

APPLICATIONSChemical industry (gas ducts gas washing and treatment systems phosphoric acid production) Heat exchangers pumps chlorination reactors

L8 HASTELLOY C 276

PHYSICAL AND MECHANICAL PROPERTIES CHEMICAL COMPOSITION CORROSION RESISTANCE

R = 600800 Mpa C = 0015 max

Very good in reducing and oxydizing atmospheresVery good against pitting and tensile-corrosionAcceptable resistance in welded jointsIn cast parts excessive segregation not eliminated by thermal treatment of annealing makes it convenient to use C22 or C4 qualitieswhich assure better corrosion resistance and mechanical properties

Rp02 = 300370 Mpa Ni = 57

HRB = 90 Cr = 145165

Mo = 1517

W = frac345

Fe =

V = 035 max

Co = 25 max

APPLICATIONSChemical industry (air ducts scrubbers fans) Paper industry Thermoelectric plants Steel thermal treatments

NOZ

ZLE

MAT

ERIA

LSNOZZLE MATERIALS Properties of materials

39wwwpnr-nozzlescomCTG SH 07 EU

MATERIALTENSILE STRENGHT

CORROSION RESISTANCERp 02 R

20degC 800degC 20degC 800degC

(68degF) (1408degF) (68degC) (1408degC)

AISI 302 280 100 680 200

Good sensitive to corrosionbetween grains for slow heatingand cooling in the 450-900deg Crange temperature

AISI 303 280 100 680 200 Discrete

AISI 304304L 270 90 600 100Good especially for 304L304 sensitive to corrosionbetween grains like AISI 302

AISI 309 250 100 640 220 Good Sensitive to corrosion between grains like AISI 302

AISI 310 310 170 650 270Good (gt 304 - 304L)Sensitive to corrosionbetween grains like AISI 302

AISI 316316L 270 110 560 220 Very high especially for 316L

AISI 321 210 100 540 140 Good

AISI 347 280 120 620 200 Good

AISI 416 620 70 750 90

Good in medium corrosive ambient (atmosphere water gasoline alcohol N1-13 foods)Not in high corrosive

BRASS 110-150 --- 360-410 --- Good especially when nickel plated

BRONZE 100-300 --- 200-600 --- Discrete especially with sea water

CAST IRON le 500 V 100-800 V

NICKEL ALLOYS 100-1000 V 300-1300 VVery high also for high temperature To use in the temperaturerange 800-1200deg C

PLASTICS --- --- 20-200 ---

Good also for erosionGenerally they are attackedwith oxidizers like nitric acidhalogens ect

PTFE --- --- 30-40 ---

Very high except for elementarystate of alkaline metalsand to compounds containingfluorine at high temp

DUPLEX STEEL gtAISI 3 gtAISI 3 gtAISI 3 gtAISI 3 Very high also with high temperatureand also for pitting

TITANIUM alloy 195-850 V 300-900 VVery high in oxidizing ambientVery low in reducing ambient and with compounds containing fluorine

Legend Rp 02 = 02 YIELD STRENGHT [MPa]R = ULTIMATE TENSILE STRENGHT [MPa]V = To verify time by time

NOZZLE MATERIALS Mechanical properties of materials

NOZ

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MAT

ERIA

LS

73wwwpnr-nozzlescomCTG SH 07 EU

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PIPINGPipes data 74Economic pipe sizes 75Pressure drop in clean steel pipes 76Flange dimensions 78Sieve size conversion chart 80

PIPING

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The following table report the data of pipes according to ANSI B3619 that is one of the most used standards that regulate welded stainless steel pipes

DN NPS OD[mm]

SCHEDULE

5S 10S 40SSTD 80SXS

t m t m t m t m

[mm] [kgm] [mm] [kgm] [mm] [kgm] [mm] [kgm]

6 18 103 NA NA 124 028 173 037 241 048

8 14 137 NA NA 165 050 224 064 302 081

10 38 172 NA NA 165 064 231 086 320 112

15 12 213 165 081 211 101 277 128 373 164

20 34 267 165 103 211 130 287 171 391 223

25 1 334 165 131 277 212 338 254 455 328

32 1frac14 422 165 167 277 273 356 344 485 453

40 1frac12 483 165 192 277 315 368 411 508 549

50 2 603 165 242 277 399 391 551 554 759

65 2frac12 730 211 374 305 534 516 875 701 116

80 3 889 211 458 305 655 549 115 762 155

90 3frac12 1016 211 525 305 752 574 138 808 189

100 4 1143 211 592 305 849 602 163 856 226

125 5 1413 277 960 340 117 655 221 953 314

150 6 1683 277 115 340 140 711 287 1097 432

200 8 2191 277 150 376 202 818 431 1270 656

250 10 2730 340 229 419 282 927 611 1270 827

300 12 3239 396 317 457 365 953 749 1270 988

350 14 3556 396 348 478 419 NA NA NA NA

400 16 4064 419 421 478 480 NA NA NA NA

450 18 457 419 474 478 541 NA NA NA NA

500 20 508 478 602 554 696 NA NA NA NA

550 22 559 478 662 554 767 NA NA NA NA

600 24 610 554 837 635 959 NA NA NA NA

Where

DN = Nominal diameter NPD = Nominal Pipe Size OD = Outside Diameter t = Wall Thickness m = Specific WeightPIPI

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PIPING Pipes data

75wwwpnr-nozzlescomCTG SH 07 EU

The following Specific Pressure Drops (Y) are normally used in the good engineering practice(where Y=ΔPL ΔP Pressur Drop and L Pipe Lenght)

For pipe sizing the Velocity (V) is also usedIn the following table are shown the typical liquid velocities in steel pipes

Some fixed pressure drop values indicationsfor gate valves (fully open) consider a pressure drop of 5 metersbullfor normal bends consider a pressure drop of 5 metersbullfor a check valve consider a pressure drop of 15 metersbull

In the succeeding tables we show the velocity and specific pressure drop for several flow rates and pipe diameters

Not boiling waterY = 02divide05 bar100 m for pump discharge (07 bar100 m max if P gt 50 bar)

Y lt 0110 bar100 m for pump suction

Boiling water Y = 004divide005 bar100 m for pump suction (velocity = 03divide09 ms)

LIQUID LINE TYPE

Specific Pressure Dropsvs Velocity [ms]

0 lt V lt 2 3 lt V lt 10 10 lt V lt 20

NOT BOILING WATER

Pump suctionPump discharge (long)Discharge leads (short)Boiler feedDrainsSloped sewer

03 divide 0606 divide 0912 divide 2712 divide 2709 divide 12

-

06 divide 1209 divide 1515 divide 3715 divide 3709 divide 1509 divide 15

09 divide 1812 divide 2124 divide 4224 divide 42

-12 divide 21

HYDROCARBON LIQUIDS(normal viscosity)

Pump suctionDischarge heather (long)Discharge leads (short)Drains

05 divide 0808 divide 1112 divide 2709 divide 12

06 divide 1209 divide 1515 divide 3709 divide 15

09 divide 1812 divide 2124 divide 46

-

MEDIUM VISCOSITY OILPump suctionDischarge (short)Drains

--

03

05 divide 0901 divide 0209 divide 15

08 divide 1501 divide 0312 divide 18

OTHER WATERCooling tower Chilled waterSea water and generally foulingwater (long pipes) ()

06 divide 09 09 divide 15 12 divide 21

Note () In this case Cameron method has to be used with C=1 Y = 005 divide 012 bar100 m for principal manifold Y = 012 divide 023 bar100 m for secondary manifold

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PIPING Economic pipe sizes

76 wwwpnr-nozzlescom CTG SH 07 EU

18rdquo 14rdquo

1 0350 0370 0200 0090 38rdquo 12rdquo

2 0705 1340 0395 0331 0223 0082 0145 0029 34rdquo

3 1060 2890 0593 0673 0333 0176 0217 0061 0125 0016 1rdquo

4 1410 4940 0788 1150 0444 0291 0290 0101 0167 0027 0110 0010

5 1760 7460 0985 1750 0556 0424 0362 0149 0209 0040 0137 0014

6 1180 2460 0667 0594 0434 0207 0251 0054 0165 0019 114rdquo

8 1580 4060 0892 1020 0579 0351 0335 0091 0219 0033 0126 0009 112rdquo

10 1110 1530 0724 0534 0418 0136 0274 0049 0158 0012 0116 0006

15 1670 3250 1090 1130 0627 0284 0411 0099 0236 0026 0174 0012

20 2rdquo 2230 5600 1450 1900 0836 0481 0549 0168 0315 0043 0233 0021

30 0212 0013 212rdquo 2170 4130 1250 1020 0823 0353 0473 0092 0348 0043

40 0283 0022 0190 0007 2900 7180 1670 1760 1100 0606 0631 0155 0465 0073

50 0354 0032 0237 0012 2090 2700 1370 0911 0789 0233 0581 0108

60 0424 0044 0284 0017 2510 3810 1650 1290 0943 0321 0697 0150

70 0495 0079 0332 0022 3rdquo 2930 5120 1920 1720 111 0434 0814 0199

80 0566 0074 0379 0028 0248 0010 312rdquo 2190 2210 126 0554 0925 0253

90 0636 0093 0427 0035 0279 0013 0209 0006 2470 2770 142 0692 1040 0319

100 0707 0114 0474 0043 0310 0015 0232 0007 4rdquo 2740 3400 158 0843 1160 0392

150 1060 0238 0711 0090 0464 0031 0349 0016 0272 0008 4110 7440 236 181 1740 0828

200 1410 0414 0948 0153 0619 0053 0466 0027 0362 0014 315 314 2330 1450

250 1760 0625 1190 0233 0774 0080 0581 0040 0453 0021 5rdquo 2900 2200

300 2120 0889 1420 0324 0930 0112 0698 0055 0543 0030 0352 0011 3480 3070

350 2470 1190 1660 0438 1080 0150 0815 0074 0634 0040 0411 0014 6rdquo 4070 4160

400 2830 1550 1900 0563 1240 0195 0935 0096 0724 0051 0469 0018 0341 0007 4650 5380

450 3180 1930 2130 0707 1390 0242 1050 0120 0815 0063 0528 0022 0366 0009 5230 6790

500 3540 2380 2370 0867 1550 0298 1170 0147 0902 0076 0587 0027 0407 0011

550 3880 2870 2610 1040 1700 0354 1280 0174 0991 0092 0645 0032 0447 0013

600 4240 3390 2840 1220 1860 0418 1400 0204 1090 0110 0704 0037 0488 0015

650 4590 5560 3080 1420 2010 0486 1510 0239 1180 0127 0762 0043 0529 0017

700 4950 4550 3320 1650 2170 0560 1630 0275 1270 0146 0821 0050 0569 0020

750 5300 5200 3560 1880 2320 0637 1750 0314 1360 0164 0879 0057 0610 0023

800 3790 2130 2480 0721 1860 0354 1450 0185 0936 0064 0651 0025 8rdquo

850 4030 2390 2630 0805 1980 0395 1540 0209 1000 0072 0692 0028 0403 0007

900 2790 0901 2090 0438 1630 0232 1050 0008 0732 0032 0427 0008

950 2940 1000 2210 0486 1720 0258 1120 0087 0773 0036 0451 0010

1000 3100 1110 2320 0534 1810 0284 1170 0096 0814 0039 0474 0011

1100 3410 1290 2560 0643 1990 0341 1290 0116 0895 0047 0522 0012

1200 3720 1 580 2800 0763 2170 0403 1410 0135 0974 0055 0569 0015

1300 3030 0890 2360 0473 1530 0157 1060 0063 0616 0017

1400 3260 1020 2540 0544 1640 0183 1140 0072 0664 0019

1500 3490 1170 2720 0617 176 0208 1220 0083 0712 0022

1600 3720 1330 2890 0697 1880 0234 1300 0093 0758 0025

1700 10rdquo 3950 1490 3080 0784 1990 0260 1380 0104 0806 0028

1800 0546 0010 3260 0875 2110 0290 1470 0116 0854 0032

1900 0575 0012 3440 0965 2230 0323 1550 0129 0901 0034

2000 0606 0012 3617 1060 2340 0356 1630 0143 0946 0037

2200 0667 0015 3980 1280 2580 0429 1790 0172 1050 0045

2400 0727 0017 12rdquo 2820 0507 1950 0200 1140 0053

2600 0788 0021 0563 0009 3050 0589 2110 0234 1230 0061

2800 0848 0023 0606 0010 14rdquo 3280 0676 2280 0268 1330 0070

3000 0909 0026 0649 0011 0532 0007 3520 0773 2440 0306 1420 0080

3500 1060 0035 0760 0015 0620 0009 4110 105 2850 0416 1660 0108

4000 1210 0045 0866 0020 0709 0012 16rdquo 4690 135 3250 0532 1900 0139

4500 1360 0056 0976 0025 0798 0015 0606 0007 3660 0674 2130 0173

5000 1520 0069 1080 0029 0886 0018 0674 0009 4070 0822 2370 0212

6000 1810 0097 1290 0042 1070 0026 0808 0013 18rdquo 4880 1160 2850 0301

7000 2120 0130 1510 0055 1240 0035 0940 0017 0741 0010 5690 1580 3310 0403

8000 2420 0168 1730 0072 1420 0045 1080 0022 0847 0012 6510 2050 3790 0525

9000 2730 0210 1950 0091 1600 0056 1210 0027 0954 0015 4270 0659

10000 3030 0257 2170 0111 1770 0067 1350 0033 1050 0019 4740 0801

Legend Q Water Flow Rate (Lpm) V Velocity (ms) Y Specific Pressure Drops (bar100m)Water at ambient temperature in straight pipe

SPECIfIC PRESSURE DROPS fOR WATER fLOW IN CLEAN STEEL PIPE SCH 10S

Q V Y V Y V Y V Y V Y V Y V Y V Y [lm] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m]

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77wwwpnr-nozzlescomCTG SH 07 EU

SPECIfIC PRESSURE DROPS fOR WATER fLOW IN CLEAN STEEL PIPE SCH 40S

Legend Q Water Flow Rate (Lpm) V Velocity (ms) Y Specific Pressure Drops (bar100m)Water at ambient temperature in straight pipe

18rdquo 14rdquo

1 0458 0726 0251 0170 38rdquo 12rdquo

2 0918 2590 0501 0600 0272 0136 0170 0044 34rdquo

3 1380 5590 0752 1220 0407 029 0255 0091 0144 0023 1rdquo

4 1840 9570 1000 2090 0543 048 0340 0151 0192 0038 0120 0012

5 2290 14450 1250 3180 0679 070 0425 0223 0241 0057 0150 0017

6 1500 4460 0815 0980 0510 0309 0289 0077 0180 0024 114rdquo

8 2010 7360 1090 1690 0680 0524 0385 0129 0240 0041 0138 0011 112rdquo

10 1360 2520 0850 0798 0481 0193 0300 0061 0172 0015 0127 0008

15 2040 5370 1280 1690 0722 0403 0450 0124 0258 0032 019 0015

20 2rdquo 2720 9240 1700 2840 0962 0683 0600 0210 0344 0054 0254 0026

30 0231 0016 212rdquo 2550 6170 1440 1450 0900 0442 0517 0114 038 0053

40 0308 0027 0216 0010 3400 10720 1920 2500 1200 0758 0689 0193 0507 0091

50 0385 0039 0270 0017 2410 3830 1500 1140 0861 029 0634 0135

60 0462 0055 0324 0023 2890 5410 1800 1610 103 0400 0761 0187

70 0539 0098 0378 0031 3rdquo 3370 7270 2100 2150 1210 0541 0888 0248

80 0616 0092 0432 0039 028 0014 312rdquo 2400 2760 1380 0690 1010 0315

90 0693 0115 0486 0048 0315 0017 0235 0008 2700 3470 1550 0862 1140 0397

100 0770 0141 0540 0059 035 002 0261 0010 4rdquo 3000 4250 1720 1050 1270 0488

150 1150 0295 0810 0125 0524 0042 0392 0021 0304 0011 4500 9300 2580 2260 1900 1030

200 1540 0512 1080 0212 0699 0072 0523 0036 0405 0019 3440 3910 2540 1810

250 1920 0773 1350 0322 0874 0108 0653 0053 0507 0028 5rdquo 3170 2740

300 2310 1100 1620 0449 105 0152 0784 0074 0608 004 0387 0014 3800 3820

350 2690 1470 1890 0606 122 0203 0915 0099 0710 0053 0452 0018 6rdquo 4440 5180

400 3080 1920 2160 0780 14 0264 1050 0128 0811 0068 0516 0023 0375 0009 5070 6690

450 3460 2390 2430 0979 157 0328 1180 0161 0912 0084 0581 0028 0402 0012 5710 8450

500 3850 2950 2700 1200 175 0403 1310 0196 1010 0101 0646 0034 0447 0014

550 4230 3550 2970 1440 192 0479 1440 0232 1110 0122 0710 0041 0491 0016

600 4620 4200 3240 1690 2100 0566 1570 0273 1220 0146 0775 0047 0536 0019

650 5000 6880 3510 1970 2270 0658 1700 0319 1320 0169 0839 0055 0581 0022

700 5390 5630 3780 2280 2450 0759 1830 0368 1420 0194 0904 0063 0625 0025

750 577 6440 4050 2600 2620 0863 1960 042 1520 0218 0968 0072 067 0029

800 4320 2950 2800 0977 2090 0473 1620 0246 1030 0081 0715 0032 8rdquo

850 4590 3310 2970 1090 2220 0528 1720 0277 1100 0091 076 0036 0439 0009

900 3150 1220 2350 0585 1820 0308 1160 0100 0804 0041 0465 001

950 3320 1350 248 0649 1930 0342 1230 0111 0849 0045 0491 0012

1000 3500 1500 261 0714 2030 0377 1290 0122 0894 0049 0516 0013

1100 3850 1750 2870 0860 2230 0452 1420 0147 0983 0059 0568 0015

1200 4200 2140 3140 1020 2430 0534 1550 0172 1070 0069 0620 0018

1300 3400 1190 2640 0627 1680 0200 1160 008 0671 0021

1400 3660 1370 2840 0722 1810 0232 1250 0091 0723 0024

1500 3920 1560 3040 0818 1940 0264 1340 0105 0775 0027

1600 4180 1780 3240 0924 2070 0297 1430 0118 0826 0031

1700 10rdquo 4440 1990 3450 1040 2190 0331 1520 0132 0878 0035

1800 0590 0012 3650 1160 2320 0369 1610 0147 0930 0039

1900 0622 0014 3850 1280 2450 041 1700 0163 0981 0042

2000 0655 0015 40500 1410 2580 0452 1790 0181 1030 0046

2200 0721 0018 4460 1700 2840 0545 1970 0217 1140 0056

2400 0786 0021 12rdquo 3100 0645 2140 0253 1240 0065

2600 0852 0025 0600 001 3360 0749 2320 0296 1340 0076

2800 0917 0028 0646 0012 14rdquo 3610 0859 2500 0339 1450 0087

3000 0983 0032 0692 0013 0573 0008 3870 0982 268 0387 1550 0099

3500 1150 0043 0810 0018 0668 0011 4520 1330 3130 0526 1810 0134

4000 1310 0055 0923 0023 0764 0014 16rdquo 5160 1720 3570 0673 2070 0172

4500 1470 0068 1040 0029 0860 0018 0658 0009 4020 0853 2320 0214

5000 1640 0084 1150 0034 0955 0022 0731 0011 4470 1040 2580 0262

6000 1960 0118 1380 0049 1150 0031 0877 0016 18rdquo 5360 1470 3100 0373

7000 2290 0158 1610 0065 1340 0042 1020 0021 0808 0012 6250 2000 3610 0499

8000 2620 0204 1840 0085 1530 0054 1170 0027 0924 0015 7150 2590 4130 065

9000 2950 0256 2080 0107 1720 0067 1310 0033 1040 0019 4650 0816

10000 3280 0313 2310 0130 1910 0081 1460 0041 1150 0023 5160 0992

Q V Y V P V Y V Y V Y V Y V Y V Y [lm] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m]

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78 wwwpnr-nozzlescom CTG SH 07 EU

10 75 12 038 4 11 50

15 80 12 044 4 11 55

20 90 14 065 4 11 65

25 100 14 082 4 11 75

32 120 14 117 4 14 90

40 130 14 139 4 14 100

50 140 14 162 4 14 110

65 160 14 214 4 14 130

80 190 16 343 4 18 150

100 210 16 422 4 18 170

125 240 18 611 8 18 200

150 265 18 751 8 18 225

175 295 20 1020 8 18 255

200 320 20 1230 8 18 280

250 375 22 1850 12 18 335

300 440 22 2550 12 22 395

350 490 22 3180 12 22 445

400 540 22 3850 16 22 495

450 595 22 4700 16 22 550

500 645 24 6040 20 22 600

PN 6 (UNI 6091)

ND 6 (DIN 2527) DN Flange Holes

D t W N Oslash a

90 14 063 4 14 60

95 14 071 4 14 65

105 16 101 4 14 75

115 16 122 4 14 85

140 16 180 4 18 100

150 16 209 4 18 110

165 18 287 4 18 125

185 18 365 4 18 145

200 20 461 8 18 160

220 20 565 8 18 180

250 22 812 8 18 210

285 22 1050 8 22 240

315 24 1410 8 22 270

340 24 1620 12 22 295

405 28 2510 12 25 355

460 28 3520 12 25 410

520 30 4820 16 25 470

580 32 6350 16 30 525

640 32 7720 20 30 585

715 34 1020 20 33 650

PN 16 (UNI 6093)

ND 16 (DIN 2527) Dimensions Holes

D t W N Oslash a

ND 10 (DIN 2527) Dimensions Holes

D t W N Oslash a

90 14 063 4 14 60

95 14 071 4 14 65

105 16 101 4 14 75

115 16 122 4 14 85

140 16 180 4 18 100

150 16 209 4 18 110

165 18 287 4 18 125

185 18 365 4 18 145

200 20 461 4 18 160

220 20 565 8 18 180

250 22 812 8 18 210

285 22 1050 8 22 240

315 24 1410 8 22 270

340 24 1650 8 22 295

395 26 2410 12 22 350

445 26 3080 12 22 400

505 26 3960 16 22 460

565 26 4960 16 25 515

615 26 5860 20 25 565

670 28 7530 20 25 620

PN 10 (UNI 6092)

LegendaDN Nominal DiameterD Flange External Diametert Flange ThicknessW Flange WeightN Hole NumberOslash Hole Diametera Hole axis

PIPING Flange dimensionsPI

PIN

G

Blind flanges to DIN 2527

79wwwpnr-nozzlescomCTG SH 07 EU

LegendDN Nominal DiameterD Flange External Diametert Flange ThicknessW Flange WeightN Hole NumberOslash Hole Diametera Hole axis

12rsquorsquo 889 111 08 4 159 603

34rsquorsquo 984 127 09 6 159 698

1rsquorsquo 1079 143 10 4 159 794

114rsquorsquo 1175 159 13 4 159 889

112rsquorsquo 1270 175 14 4 159 984

2rsquorsquo 1524 190 18 4 190 1206

212rsquorsquo 1778 222 32 4 190 1397

3rsquorsquo 1905 238 41 4 190 1524

312rsquorsquo 2159 238 59 8 190 1778

4rsquorsquo 2286 238 77 8 190 1905

5rsquorsquo 2540 238 91 8 222 2159

6rsquorsquo 2794 254 118 8 222 2413

8rsquorsquo 3429 286 204 8 222 2984

10rsquorsquo 4064 302 318 12 254 3619

12rsquorsquo 4826 317 500 12 254 4318

14rsquorsquo 5334 349 600 12 286 4762

16rsquorsquo 5969 365 770 16 286 5397

18rsquorsquo 6350 397 950 16 317 5778

20rsquorsquo 6985 429 1230 20 317 6350

22rsquorsquo 7493 460 1510 20 349 6921

ANSI 150 lb DN Flange Holes

D t W N Oslash a

952 143 10 4 159 667

1175 159 14 4 190 825

1238 175 18 4 190 889

1333 206 27 4 190 984

1556 222 36 4 222 1143

1651 254 45 8 190 1270

190S 286 68 8 222 1492

209S 317 91 8 222 1683

2286 349 132 8 254 1841

2540 349 150 8 254 2000

2794 381 200 8 254 2349

3175 413 277 12 254 2699

3810 476 450 12 286 3302

4445 540 700 16 317 3873

5207 571 103 16 349 4508

5842 603 141 20 349 5143

6477 635 181 20 381 5715

7112 667 228 24 381 6286

7747 698 282 24 413 6858

8382 730 311 24 444 7429

ANSI 400 lb Dimensions Holes

D t W N Oslash a

ANSI 300 lb Dimensions Holes

D t W N Oslash a

952 143 10 4 159 667

1175 159 14 4 190 825

1238 175 18 4 190 889

1333 190 27 4 190 984

1556 206 32 4 220 1143

1651 222 36 8 190 1270

1905 254 54 8 222 1492

2095 286 73 8 222 1683

2286 302 95 8 222 1841

2540 317 122 8 222 2000

2794 349 159 8 222 2349

3175 365 227 12 222 2699

3810 413 370 12 254 3302

4445 476 580 16 286 3873

5207 508 840 16 317 4508

5842 540 1070 20 317 5143

6477 571 1390 20 349 5715

7112 603 3900 24 349 6286

7747 635 2230 24 349 6858

8382 667 2700 24 413 7429

PIPING Flange dimensions

PIPI

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flanges to ANSI norms

80 wwwpnr-nozzlescom CTG SH 07 EU

PIPI

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Sieves are used both for determining the particle size distribution of a granular material and to filter solid particles in a liquid Normally the sieve is made with a fabric whose characteristic dimensions areL is the Opening Width (free passage)D is the Diameter of the wireP is the Pitch of the wireS is the Thickness of the fabricTo classify particle sizes there is some Sieve Series according to specific standardsthe most known are Tyler Sieve Series US Sieve Series UK Sieve SerieshellipThe Tyler mesh size indicates exactly the number of openings per linear inch of mesh

L[microm]

TYLER Sieve[Mesh No]

ASTM E11 Sieve[Mesh No]

BS 410 Sieve[Mesh No]

DIN 4188 Sieve[mm]

5 2500 2500 0005

10 1250 1250 0010

15 800 800 0015

20 625 635 625 0020

22 0022

25 500 500 500 0025

28 0028

32 na 450 440 0032

36 0036

38 400 400 400

40 0040

45 325 325 350 0045

50 0050

53 270 270 300

56 0056

63 250 230 240 0063

71 0071

75 200 200 200

80 0080

90 170 170 170 0090

100 0100

106 150 140 150

112 0112

125 115 120 120 0125

140 0140

150 100 100 100

160 0160

180 80 80 85 0180

200 0200

In the german standard (DIN norm 4188) the Opening Width (L) is given in millimeters

PIPING Sieve size conversion chartPI

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L[microm]

TYLER Sieve[Mesh No]

ASTM E11 Sieve[Mesh No]

BS 410 Sieve[Mesh No]

DIN 4188 Sieve[mm]

212 65 70 72

250 60 60 60 0250

280 0280

300 48 50 52

315 0315

355 42 45 44 0355

400 0400

425 35 40 36

450 0450

500 32 35 30 0500

560 0560

600 28 30 25

630 0630

710 24 25 22 0710

800 0800

850 20 20 18

900 0900

1000 16 18 16 1000

1120 1120

1180 14 16 14

1250 1250

1400 12 14 12 1400

1600 1600

1700 10 12 10

1800 1800

2000 9 10 8 2000

2240 2240

2360 8 8 7

2500 2500

2800 7 7 6 2800

3150 3150

3350 6 6 5

3550 3550

4000 5 5 4 4000

4500 4500

4750 4 4 35

5000 5000

5600 35 35 3

6700 3 0265 in 1

8000 25 516 in na

Applicable standards areISO 565 (1987) ISO 3310 (1999) ASTM E 11-70 (1995)DIN 4188 (1977) BS 410 (1986) AFNOR NFX11-501 (1987)

Legend Q Water Flow Rate V Velocity P Pressure drop Pressure drop in bar per 100 meters of straight pipe (water at ambient temperature)

PIPING Sieve size conversion chart

PIPI

NG

Besides its main range of nozzles for industrial applications PNR manufactures a wide range of complementary products and systems to optimize the use of spray jets and fluids control in most of the modern industrial processes

PNR PRODUCT RANGE

CTG AC

CTG LS

CTG UG

CTG AZ

Complementary Products andAssembly FittingsA complete line of nipples clamps swivel joints and everything that helps you to assemble align and service your spraying systems quickly and easilyAir blowers mixing eductors filters clean-ing guns and lances hose reels steam heaters pressure tanks quick couplings to help you build up a professional system upgraded to the latest standards

Tank washing systemsA complete range from simple fixed washing heads to the two-axis heads from mushroom nozzles to fluid driven reaction heads up to the motor driven washing heads equipped with a pneu-matic or electric motorAll for the inside cleaning of industrial tanks according to the latest technology accessories included

Spray nozzles for industrial applicationsOne of the world most complete lines of nozzles for numberless industrial appli-cations Nozzles with a wide openings range various types of vanes several spray patterns anti-clog design available in small and big dimensions and made in many food-grade materials like PFTE and Stainless Steel 316L with threaded and flanged connections

Air assisted atomizersUltrasonic classic and automatic atomiz-ers for the finest atomization in any insus-trial process High quality machining and strict quality control ensure your systems top professional resultsProgramming and control panels for an easy assembly of complete humidification systems

CTG SP

CTG PM

CTG SW

CTG LN

Spraydry nozzlesAir assisted or hydraulic high pressure ato-mizers made in high-quality metal alloys or tungsten carbideA complete line of nozzles for the moder-nization of existing facilities at competitive prices To ensure highly accurate results and a long service life these nozzles are manufactured with the finest materials and technologically advanced machines

Paper mill productsA line of products specifically designed for perfect results on paper mill machines including disc nozzles patented for self-cleaning filters flat jet nozzles with orifices in sapphire ruby and ceramic oscillating tubes equipped with a computer driven motor

Steelwork nozzlesA complete line of nozzles for steelwork applications including continuous casting air atomizers and conventional nozzles descaling nozzles for high pressure sys-tems dovetail tips for cylinders cooling and high capacity flanged nozzles for coke quenching

Gas cooling lancesSpillback or air assited lances for gas coo-ling in steelworks cement plants and other industrial applicationsWe can supply spare parts upgrade your plant and even supply a complete PLC driven system to enhance the towers per-formances to the highest efficiency level allowed by today technology

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CTG SH 07 EUwwwpnr-nozzlescom

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Our products are distributed through

We are also represented in

PNR AmericaPNR Asia

PNR BalticPNR Benelux

PNR ChinaPNR Czech Republic

PNR DeutschlandPNR France

PNR ItaliaPNR Mexico

PNR UK

ArgentinaAustraliaAustriaBrazil

BulgariaCanada

ChileCroatia

DenmarkFinlandGreece

IndiaIndonesia

IranIrelandKorea

MalaysiaNorway

New ZealandPakistan

PhilippinesPoland

Portugal

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SingaporeSlovenja

SpainSouth Africa

SwedenTaiwanTurkey

Venezuela

Page 9: SPRAY CTG SH 07 EU ENGINEERING HANDBOOK

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LIQUID SPRAY AND SPRAY NOZZLES Liquid spray

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LIQUID SPRAY AS A PROCESS

The process of spraying a liquid can be described as composed of two phases namely

1 Breaking up the liquid into separated drops2 Directing the liquid drops onto a surface or an object to achieve the desired result

The above two phases are normally performed by the types of nozzles being used in industrial processes at the same time by means of different techniques which shall be illustrated in the followingThe continuous progress in the manufacturing techniques in recent years has requested the nozzle manufacturer to make available to the industry an always more complete range of spray nozzle types to perform the different processes in a more efficient wayIt is the interest of the engineer using spray nozzles in manufacturing processes to become familiar with the different types of nozzles which are available today and with their individual characteristics in order to be able to choose the nozzle which performs with the highest possible efficiency on a given application

Spraying a liquid through a spray nozzle can serve different purposes among which the most important are the following

1 Cooling by means of heat transfer between the product itself and the liquid running on its surface2 Washing where the water directed onto the product takes away dirt or undesired substances from the product surface3 Humidifying with sprays carrying very little liquid quantities to the product surfaceinto a chamber or into a room4 Metering the desired liquid quantity in a unit of time into the product being handled5 Applying a product on a surface as in the case of spray painting or surface pre-treatment before painting6 Increasing the liquid surface to speed up heat transfer processes or chemical reactions and many others in numerous applications throughout modern industry

It is self evident that the best results for every application are only obtained when the right choices in terms of nozzle type flow value spray angle drop dimensions and nozzle material are madeThe purpose of the following pages is to give the reader the basic knowledge which is needed to properly select a spray nozzle for a given application

Spray nozzles

a spray nozzle is a device which makes use of the pressure energy of a liquid to increase its speed through an orifice and break it into dropsIts performances can be identified and described precisely so that the design engineer can specify exactly the spray nozzle required for a given process

The relevant characteristics which identify the performances of a nozzle are the following

1 The liquid flow delivered as a function of the nozzle feed pressure2 The opening angle of the produced spray3 The nozzle efficiency as the ratio between the energy of the spray and the energy used by the nozzle4 The evenness of the flow distribution over the target5 The droplet size distribution of the spray6 The jet impact of the spray

The above characteristics will be discussed in the following pages in connection with the different nozzle types

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TECHNIQUES FOR SPRAY PRODUCTION

Many different techniques can be used to produce a spray and most of them are used today for nozzles to be applied in industrial processes Based on the different techniques the following nozzle types can be used in industrial applications to generate a liquid spray

1 Pressure nozzlesThis is the simplest type of nozzles where an orifice is opened into a chamber where the liquid to be sprayed is fed under pressure A spray is produced through the orifice with spray pattern flow rate and spray angle depending upon the orifice edge profile and the design of the inside pressure chamberTypical pressure nozzles are the flat jet nozzles series GA J GX and GY

2 Turbulence nozzlesIn these nozzles the liquid moving towards the chamber preceding the orifice is given a rotational speed component so as to open up in a conical shape as soon as it leaves the orifice edge because of centrifugal force Based on the nozzle design and the technique used to generate the rotational speed the drops produced can be confined to the cone outer surface (hollow cone spray) or be evenly distributed to fill the entire volume of the cone (full cone spray)

3 Impact nozzlesHere the desired spray shape is obtained producing an impact of the liquid jet onto a properly designed surface The liquid jet is subsequently changed into a fluid lamina and then broken into drops with the desired spray pattern after leaving the nozzle edge

4 Air assisted atomizersFine and very fine sprays can be obtained by means of air assisted atomizers working upon various different principles More detailed information about air assisted atomizing can be found in our Catalogue Air assisted atomizers (ordering code CTG AZ18)

LIQUID SPRAY AND SPRAY NOZZLES Liquid spray

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FULL CONE PATTERN

In a full cone spray the droplets are distributed into a volume which is limited by a cone having its origin point at the nozzle orifice Such spray pattern is commonly used in a large variety of industrial processes since it is the one which allows to distribute in an even way the water flow onto a surface the full cone spray pattern is therefore useful as a typical example to evenly spray cooling liquid on a still surface Another typical use is to distribute liquid droplets within a certain volume like for example evenly distributing water droplets in the inside volume of a cooling tower

Because of the wide number of processes performed by means of full cone nozzles the original shape has evolved into a range of specialised types where the full cone spray pattern or a pattern similar to a full cone one is obtained by different techniques

Standard full cone (turbulence nozzle)These nozzles use a specially shaped vane placed at the nozzle inlet to give a rotational speed to the fluid flowing through the nozzleBecause of the rotational speed of the fluid water exiting the nozzle orifice is subjected to centrifu-gal force and opens up in the shape of a full coneThe extent of the angle of the cone is a function of both exit speed (created from the inlet pressure) and the internal design of the nozzle It can vary in practice from 15deg to 120deg

These nozzles can be also produced as square full cone nozzles where the square shape of the pyramidal spray is obtained by a special design of the outlet orificeTwo important details have to be noted from the system designer when using these type of noz-zles

the spray angle is measured on the side of the square sectionbullthe square section of the spray rotates within the distance from the nozzle orifice to the bulltarget area

Spiral full cone (deflection nozzle)This is not properly a full cone but rather a continuous liquid curtain evolving with the shape of a spiral inside a conical volume The disadvantage of a scarcely even distribution is compensated by an exceptionally good resistance to plugging which makes this nozzle the best choice in those applications where safety or system reliability are the prime concern eg fire fighting systems

Multiple full cone (turbulence nozzle air atomizer)This spray pattern is used in two cases that is

1 When a wide spray angle is to be reached with nozzles which inherently can only produce a narrow one or in such cases where small size droplets and rather high capacities are required Therefore several nozzles are grouped in a cluster with different spray directions the resulting spray pattern occurs from the additional group of single nozzle sprays and the droplet size of the spray remains the same as one of single nozzle It must be noted that a smaller nozzle will normally make smaller drops as compared to a larger size nozzle of the same type operating under the same conditions

2 When it is necessary to obtain a wide angle jet using nozzles which inherently deliver a lim-ited angle spray In the case of a wide angle air atomizer for example the droplet distribution is obviously not homogeneous and the result is rather a number of small angle sprays with different directions but still the liquid is atomized towards all the parts of the volume to be treated

LIQUID SPRAY AND SPRAY NOZZLES Spray nozzle types

Standard full cone

Spiral full cone

Multiple full cone

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FLAT JET SPRAY PATTERN

In a flat jet spray the liquid droplets are sprayed in the shape of a flat liquid layer with different thickness according to the principle used to generate the spray A flat jet spray nozzle serves the purpose of spraying onto a surface or an object moving in a transverse direction with respect to the one of the jet surface a typical example being the nozzles in a car washing tunnel The vast majority of flat spray nozzles used in the industry work according to one of the following principles

In line flat jet (pressure nozzle)This is the general purpose flat jet nozzle where the liquid enters the nozzle in line with the axis length and is fed to a pressure chamber from where it is ejected through the nozzle orifice Flow value and spray angle are determined respectively from the orifice cross section and the orifice edge profile

In line straight jet (pressure nozzle)These nozzles can be considered a special kind of flat jet nozzle with naught degree spray angle They are designed to produce a sharp stable stream with powerful impact on a given point and serve normally to perform cleaning processes or to cut soft materials

Spoon flat jet (deflection nozzle)In this type of nozzle the liquid is fed under pressure to a round outlet orifice and then deflected onto a smooth profiled surface so as to assume a flat jet shape This sophisticated design is of advantage since it offers a stronger jet impact using the same feed pressureHigher efficiency comes from the very little energy required to just change the direction of the liquid flow this being the only energy required to generate the flat jet

HOLLOW CONE SPRAY PATTERN

A hollow cone spray pattern consists of droplets concentrated onto the outer surface of a conical shape volume with no droplets contained in the inside of the conical jet shape These nozzles are normally used for smoke washing or gas cooling applications in several industrial processes

Hollow cone (turbulence nozzle)These nozzles use a tangential injection of liquid into a whirling chamber to generate centrifugal forces which break up the liquid vein as soon as it leaves the orifice Precisely designed orifice profiles making use of the Coanda effect provides the ability to obtain very large spray angles

Hollow cone (deflection nozzle)A hollow cone can also be obtained taking a liquid flow to change direction onto a properly designed surface in order to break the liquid into droplets and distributing them as a hollow cone spray patternThis kind of nozzle is mainly used for applications in dust control and fire fighting systems

LIQUID SPRAY AND SPRAY NOZZLES Spray nozzle typesLI

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PNR CODING SYSTEM

As any other industrial product spray nozzles need to be precisely identified by means of a code in order to avoid mistakesPNR coding system has been designed with the following requirements in mind

Codes must be easily processed by a computer in ascending orderbullCodes must describe completely the product without any need for additional descriptionbullCodes must show to the user the basic specifications of the nozzle in order to ease the search in the cataloguebull

We have therefore determined our coding system described as follows

LIQUID SPRAY AND SPRAY NOZZLES Spray nozzle coding

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AA U X YB312 305

Thread type or other connection

Special features

Nozzle material code (see below)

The three digits give the nozzle capacity in lpm at 3 bar according to rank value

Rank of flow value see table below

Nozzle spray angle see table below

Nozzle type as described in the catalogue pages shown in ascending order

Nozzle tables report on a blue background the nominal flow value measured at 30 barFlow values at different pressures have been calculated

These codes serve as an indication onlyBased on different types of nozzles their significance can occasionally be different

CAPACITY RANK

Rank Flow digits Actual flow (lmin)

0 0 490 049

1 1 490 490

2 2 490 490

3 3 490 490

4 4 490 4900

SOME SPRAY ANGLE CODES (DEGREES)

A = 0 L = 40 T = 80

B = 15 M = 45 U = 90

C = 20 N = 50 J = 110

D = 25 Q = 60 W = 120

F = 30 R = 65 Y = 130

H = 35 S = 75 Z = 180

A1 Carbon steel D6 Glassfibre reinforced PP L2 Incolloy 825

A2 High speed steel D7 High density polyethilene L8 Hastelloy C276

A8 Zinc coated steel D8 Polyvinylidenefluoride (PVDF) P6 Acr But Styrene (ABS)

A9 Nickel coated steel E0 EPDM P8 EPDM 40 Shore

B1 AISI 303 Stainless steel E1 Polytetrafluorethylene (PTFE) T1 Brass

B2 AISI 304 Stainless steel E2 PTFE (25 glassfibers) T2 Brass chrome plated

B21 AISI 304 L Stainless steel E31 Acetalic resin (POM) T3 Copper

B3 AISI 316 Stainless steel E7 Viton T5 Bronze

B31 AISI 316 L Stainless steel E8 Synthetic rubber (NBR) T8 Brass nickel plated

C2 AISI 416 Stainless steel hardened F5 Ceramic T81 Brass electroless nickel plated

D1 Polyvinylchloride (PVC) F31 Ruby insert 303 body V1 Aluminum

D2 Polypropylene (PP) G1 Cast iron V7 Aluminum electroless n plated

d3 Polyamide (PA) H1 Titanium

D5 Talcum filled Polypropylene L1 Monel 400

NOZZLE MATERIAL CODES

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LIQUID SPRAY AND SPRAY NOZZLES Computerized fluid dynamics

The customers demand for an always higher efficiency requires to use not only the best tooling but in addition control instruments and design methods always more sophisticated like for example new software for obtaining the velocity distribution of a fluid flowing through a conduit

These software programs require that the geometry of the inner con-duit to be geometrically defined and in addition the process conditions ( pressure temperature fluid capacity ) and the fluid properties ( specific weight viscosity ) to be Introduced

Based on the above data it is pos-sible to obtain a very precise dis-tribution for the velocity value in each single point of the conduit both under numeric form and flow diagramsThese Information make it possi-ble as an example to minimize the flow turbulence and consequently to Increase the nozzle efficiency through an increase in the fluid exit velocityThis is of basic Importance for some kind of nozzles for example those nozzles required to supply an high impact jet when performing descal-ing processes in a rolling millBy trial and error it is also possible to eliminate problems like jet Instability or cavitation

The overall process efficiency in the flow path before the nozzle can also be considered which often results into the design of geometry modifi-cation or the Introduction of special flow improving profiles along the conduit

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The diagram on the right shows the idealization of the process generating the droplets while the water jet exiting the nozzle is breaking up The theoretical model whose exactitude seems to be confirmed by scientific research considers that the liquid flowing through the nozzle and past the orifice edge evolves into a liquid lamina This lamina because of instability induced by aerodynamic forces breaks up first into elongated ligaments more or less cylindrical and later into droplets

Taking the above process as a guideline one can easily appreciate that the average droplet diameter is some what related to several factors like

1 The thickness of the lamina itself2 The evenness of the lamina 3 A steady flow and break up process

For what has been said above and limited to hydraulic nozzles the system designer looking for fine droplet sprays should consider that the following results can be expected

Impact nozzles best

Centrifugal hollow cone nozzles multiple full cone nozzles good

Turbulence nozzles fair

Centrifugal Vaneless full cones worst

The above choice is obviously based on the droplet generation process which changes from one nozzle type to another and allows to forecast which type is best fro the applicationAn additional consideration of interest is that the expected droplet size changes for the same type of nozzle with the nozzle size it is possible to generate smaller drops spraying the same water quantity at the same pressure using a greater number of smaller nozzles

In cases where energy requirements are not a problem or where a specified small droplet diameter is required the smal-lest droplets can be obtained by means of an air assisted atomizerHere the shear action of a high speed compressed air flow is used with several different techniques to obtain a value for SMD (Sauter Mean Diameter) of 50 microns and less

LIQUID SPRAY AND SPRAY NOZZLES Spray generation

Theoretical Mechanism of droplet generation

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SLIQUID SPRAY AND SPRAY NOZZLES Droplet spectrum

The atomization of a liquid by means of a compressible fluid like air steam or a gas is defined pneumatic two-phase or twin-fluid atomization Many industrial processes require the availability of finely atomized droplets and the techniques to produce atomized jets have been largely improved in the recent years In addition more sophisticated process techniques have incre-ased the demand for a precise definition about the characteristics of the spray and are now available to the design engineer Since many years PNR can supply upon request complete documentation containing test reports about the more interesting and additional information which are described below for all PNR products

Laser Interpherometer Test (By Pdpa)

PNR droplet size test reports are performed by means of a Laser Interpherometer (Phase Doppler Particle Analyzer) where two laser beams cross in a given point of the spray and define a test probe area Droplet flying through the probe area cause a light scatter which is picked up by the instrument receiver and processed through a computer in order to obtain relevant information about the spray characteristics

Report information

Report information is made of data printed on three pages where the first page contains the most interesting data which make possible to base process calculations upon precise data about spraying degrees process efficiency and jet behavior in operational ambiance These pages contain the Sauter Mean Diameter value whose knowledge is of special importance in heat exchange calculations about evaporative gas cooling processes since it gives the possibility of evaluating the exchange surface obtained by atomizing for a given liquid volume

The upper picture at page 18 referring to atomizing water by means compressed air shows two following histograms

bull Distribution curve of droplet diameter (micron)

bull Distribution curve of droplet velocities (mps)

and the below described values

bull Arithmetic Mean Diameter (D10)

bull Surface Mean Diameter (D20)

bull Volume Mean Diameter (D30)

bull Sauter Mean Diameter (D32)

ARITHMETIC MEAN DIAMETERThis is a diameter value which multiplied by the local num-ber of droplets in the sample equals the addition of alI droplets diameters

SURFACE MEAN DIAMETERThis is the diameter of such a droplet whose surface mul-tiplied by the total droplets number equals the sum of alI droplets surfaces

VOLUME MEAN DIAMETERThis is the diameter of such a droplet whose volume mul-tiplied by the total droplets number equals the sum of all droplets volumes

SAUTER MEAN DIAMETERThis is the diameter of such a droplet whose volumearea ratio equals the ratio between the sum of alI droplet volu-mes divided by the sum of alI droplet surfaces

D10 = Σ i ni di

Σ i ni

D20 = Σ i ni di

2

Σ i ni

D30 = Σ i ni di

3

Σ i ni

D32 = Σ i ni di

3

Σ i di

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3

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AttemptsDroplet number crossing probe area during test time This includes both validated and not validated droplet

Correct Count Criteria A mathematic correction is applied to validate droplets which cross Probe Area in a peripheral belt or to droplets without a perfect spherical shape so that alI validated droplets parameters are homogeneous (This correction is necessary so that there is direct proportionally between laser beam phase and droplet number diameter)

Number Density It is the number of droplets passing through probe area within test time

Probe areaThis is the area where the two laser beams are crossing so determining the probe area AlI droplets intersecting probe area are checked droplets which respect given parameters for shape are taken as valid droplets and make up the sample whose size and velocity parameters are reported

ValidationsDroplets accepted based on given shape parameters to make up for test sample

Velocity MeanDroplets distribution speed histogram (ms)

Volume Flow RateIt is the volume measured in cubic centimeter per second of the validated droplets making up for the sample

Volume FluxIt is the flow rate per specific area measured in cubic centimeter per second and square centimeter of the validated droplets making up the sample

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LIQUID SPRAY AND SPRAY NOZZLES Droplet spectrum

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SLIQUID SPRAY AND SPRAY NOZZLES Droplet spectrum

PNR can supply upon request complete documentation con-taining test reports about the aforementioned parameters and additional information for all PNR atomizersThe diagrams beside show the distribution of droplet diameters and droplet velocities of a spray under test as available to our customers

In the photo beside a test being performed at our laboratoriesWe use a computer driven laser interpherometer to detect and record the spray parameters while fluid capacities and feed pressure values are monitored through high precision instru-ments

IMPORTANT NOTE

The droplet size values measured with a PDPA instrumentation are representative of a well specified volume inside the spray and taking measurements in a different volume they can be considerably differentA correct spray droplet size characterization requires then not only tests being performed in several volumes within the spray but also that those measure volumes are selected with regard to the process the droplets are expected to performAs an example the droplet characterization of a spray should define how many volumes have been tested and which are the coordinates of each single test volume in relation to the nozzle orifice

Most of the times pretending to describe the droplet spectrum of a spray nozzle at a given pressure with only one diagram is therefore not correct

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In order to calculate the discharge flow rate from a given nozzle the Bernoulli law shall be used which says that the energy of a liquid flow remains unchanged over alI the sections of the flow Friction and turbu-lence losses are neglected which is reasonable for our purposes if the cal-culation is performed over two sections not too far away from each other

The Bernoulli law can be written as follows

Therefore if we consider two sections of the same pipe section A and section B we can write that the flow energy remains constant in the form

If we finally consider that the two above sections are taken immediately before and immediately after the nozzle outlet orifice being

ZA = ZB PB = 0 (PA is a differential pressure referred at the atmosphere pressure)

VA cong 0 negligible as compared to VB (for orifice diameter much smaller than the duct diameter)

we shall come to the formula

When we define a new constant k to include the value of the nozzle orifice outlet area (A) then we come to the following equation which says that for a nozzle spraying into a room at ambient pressure the exiting flow is proportional to the feed line pressure

Considering now two different pressure values for the same nozzle since k is a constant quantity we can write that

and derive from the above an equation that makes it possible to calculate the nozzle flow value at any given pressure value once the flow value at another pressure value is known

The energy of a given liquid flow crossing a given pipe section is composed of three parts namely

P Pressure energy of liquid particle per volume unit

1 ρV2 Kinetic energy of liquid particle per volume unit2ρgz Potential Energy of liquid particle per volume unit

Where ρ = density of liquid g = gravitational acceleration

z = height respect to one plane of reference V = liquid velocity

PA = 1 ρVB 2 rArr

2

K = Q rArr

PK =

Q1 = Q2 rArr

P1 P2

Q = A V rArr

Q = A x C x P rArr

1 P + 1 ρV2 + ρgz = E

2

VB = 2 PA rArr ρ

Q1 = P1

Q2 P2

3 V = C P

4 Q = K P

2 PA + 1 ρVA 2 + ρgzA = PB + 1 ρVB

2 + ρgzB 2 2

EXIT VELOCITY DEPENDS UPON PRESSURE

NOZZLE CAPACITY DEPENDS UPON PRESSURE

NOZZLE CAPACITYAT A DIFFERENT PRESSURE

5 Q2 = Q1 P2

P1

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LIQUID SPRAY AND SPRAY NOZZLES Nozzle flow rate

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SLIQUID SPRAY AND SPRAY NOZZLES Nozzle flow rate

The Equation (5) has been obtained after having simplified the real problem neglecting several factors like for examplebullInmostofthepracticalapplicationcasestheflowisturbulentandnotlaminarbullFrictionlossestendtostronglyincreasewithliquidvelocitybullDependinguponthetypeofnozzleadifferentpercentageoftheavailableenergyisusedtobreakupthejetandgivethe

desired spray pattern and spray angle

For the above reason equation (5) gives reliable results if used in a limited pressure range around the pressure value where the flow rate is known with this pressure range depending upon the type of nozzleOur experience has shown that one can expect the error in the calculated value to be lower than +- 6 for pressure values ranging from 13 to 3 times the reference value

As an example a nozzle rated for 10 lpm at 3 bars would have according to equation (5) the following flow valuesa 1 bar 577 lpma 9 bar 173 lpmin real conditions it can be expected the flow rate values to beas high as 61 lpm a 1 baras low as 162 lpm a 9 barAbove considerations are to be used as a guideline only because of the many factors influencing real operations which have not been considered here for example liquid temperature viscosity and density

Possible percentage deviation from theoretical flow rate values

Also above mentioned percentage errors have to be understood for nozzles using part of the flow energy to produce wide angle spray patternsLower values can be expected for narrow angle nozzles impact nozzles and straight jet nozzles Laboratory tests and diagrams showing real flow rate values for each nozzles are used in practice when a precise result must be available

Nozzle discharge coefficient

With reference to equation (4) if we consider the pressure value to be equal to 1 (P = 1 bar) the flow rate of the nozzle becomes

K is a parameter widely used in the fire fighting industry

In some instances reference is made to the nozzle discharge coefficient or shortly to the nozzle coefficient to indicate the nozzle flow rate for a unitary pressure Of course for a given pressure value Pn the flow value will be

+ 6

+ 3

- 3

- 6

CAPACITY AT A GIVEN PRESSURE VALUEWHEN K KHOWN

NOZZLE CAPACITYFOR P=1 barQ = K P = K 1 = K

6 Qn = K Pn

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The spray angle is the opening angle which the nozzle jet of droplets forms at the moment when it leaves the nozzle orifice and it is one of the fundamental parameters for the choice of a given nozzleIn fact the amplitude of the spray angle determines in connection with the distance between the nozzle orifice and the target to be covered the spray coverage and the density of liquid sprayed with respect to the cover area See our Catalogue for description of the different nozzle spray patterns The table at the bottom of the page gives the theoretical spray width based on the nozzle spray angle and the distance from the nozzle orifice It is important to note that because of several factors like gravity forces and aerodynamic drag the spray angle value cannot be maintained but in in a limited distance normally up to 300 mm from the orifice For air assisted atomizers it is improper to use the term spray angle since no precise value can be measured Therefore the values given by Catalogues are to be intended as guidelines only

THEORETICAL SPRAY COVERAGE

at various distances from nozzle orifice

Spray 50 100 150 200 250 300 400 500 600 700 800 1000 Angle mm mm mm mm mm mm mm mm mm mm mm mm

15deg 13 26 40 53 66 79 105 132 158 184 211 263 25deg 22 44 67 89 111 133 177 222 266 310 355 443 30deg 27 54 80 107 134 161 214 268 322 375 429 536 35deg 32 63 95 126 158 189 252 315 378 441 505 631 40deg 36 73 109 146 182 218 291 364 437 510 582 728 45deg 41 83 124 166 207 249 331 414 497 580 663 828 50deg 47 93 140 187 233 280 373 466 560 653 746 933 60deg 58 116 173 231 289 346 462 577 693 808 924 1150 65deg 64 127 191 255 319 382 510 637 765 892 1020 1270 70deg 70 140 210 280 350 420 560 700 840 980 1120 1400 75deg 77 154 230 307 384 460 614 767 921 1070 1230 1530 80deg 84 168 252 336 420 504 671 839 1010 1180 1340 1680 90deg 100 200 300 400 500 600 800 1000 1200 1400 1600 2000 95deg 109 218 327 437 546 655 873 1090 1310 1530 1750 2180 100deg 119 238 358 477 596 715 953 1190 1430 1670 1910 2380 110deg 143 286 429 571 714 857 1140 1430 1710 2000 2290 2856 120deg 173 346 520 693 866 1040 1390 1730 2080 2430 2771 3464 130deg 215 429 643 858 1070 1290 1720 2150 2570 3002 3431 4289

WhereASCbull = Actual Spray CoverageTSCbull = Theoretical Spray CoverageASAbull = Actual Spray AngleTSAbull = Theoretical Spray AngleL bull = Spray Distances

TSC = 2 middot L middot ctan ( TSA )2

7

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LIQUID SPRAY AND SPRAY NOZZLES Spray angle

22 wwwpnr-nozzlescom CTG SH 07 EU

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SLIQUID SPRAY AND SPRAY NOZZLES Spray angle

Depending upon the nozzle design variations of feed pressure may have a great influence on the spray angle valueGenerally with increasing pressure turbulence full cone nozzles will produce narrower angles flat jet nozzles will show a wider angle spray while nozzles working on the deflection principle like spiral nozzles and K style flat jet nozzles will be less affected by pressure changesAll nozzles will not function properly with very low pressure values (from 05 bar down depending upon nozzle type ) with a marked decay in performance larger drops not well defined spray pattern lower spray angle values

The above pictures show spray angles for different nozzles and different pressure valuesShould your application strictly require that a given value of the spray angle is obtained under a given pressure value or pressure range of values please obtain a test report from our laboratories

Full cone nozze DDW 2235

Flat jet nozzleJCW 2245

Spiral nozzeECW 2230

Pressure 05 bar Pressure 05 bar Pressure 05 bar

Pressure 3 bar Pressure 3 bar Pressure 3 bar

Pressure 10 bar Pressure 10 bar Pressure 10 bar

Photo obtained with 120000s flashlight

picture 1

picture 4

picture 7

picture 2

picture 5

picture 8

picture 3

picture 6

picture 9

NotePicture 2 shows clearly the droplet generation mechanism as described at page 15

23wwwpnr-nozzlescomCTG SH 07 EU

Terms and definitions

A very important characteristic of a spray nozzle is a parameter called Spray Distribution which gives a precise information about how evenly the drops of the spray are distributed onto the area covered by the sprayIt is self understood that normally it is preferable to obtain the most even distribution possibleIn the past this was done through the visual examination of a diagram reporting the quantity of water contained for example in glass pipes aligned onto the spray coverage areaPnr has determined to obtain such a result in a scientific way through high technology instrumentation as shown in the pictures below showing one of our patternators and a typical distribution diagram

Now to the spray geometry and some definition letrsquos consider a nozzle with a capa-city Q at the pressure PAt every value for distance H which we call height of spray we can define a plane lsquonrsquo normal to the nozzle axis on which a line can define the intersection of the spray onto the planeThe area covered by the spray on the plane lsquonrsquo has a surface S depending from the following parametersa) Spray pattern Fb) Opening angle of the spray αc) Height of the spray H

We can then write S=S( F α H )

In case of a full cone nozzle S is a circle with diameter C and S = 0785 C2

The capacity of the nozzle flows through the surface S but each smaller area inside the surface S will probably have a different value for the flow passing through itWe introduce then the value of Specific Capacity q

1) Specific Capacity

The function q depends upon the single point (xy) in the section S and then

Determining the function q is however very expensive therefore in practice two different functions are used which give in most occurrences sufficient information

2) Linear Distribution

3) Angular distribution

part Qpart x

qx =

Diagram 1

q = limΔS 0

ΔQΔS

q = = f (x y H)part Qpart S

part Qpart φ

qφ =

ΔQ is the liquid flowing through a surface ΔSwhere ΔS is a fraction of the surface S

x and y are the local coordinates in the section planewhere H is the distance of the test surface from the nozzle orifice

partQ is the variation in capacitywhere partx is the variation of a generic linear coordinate

partQ is the variation in capacitywhere partφ is the variation of a generic angular coordinate

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LIQUID SPRAY AND SPRAY NOZZLES Spray Distribution

24 wwwpnr-nozzlescom CTG SH 07 EU

LIQUID SPRAY AND SPRAY NOZZLES Spray Distribution

Values extracted from these functions can characterize the spray and allow for drawing the diagrams defined as Distribution Curves

Analyzing the above curves it is possible to determine the type of water distribution along the spray coverage and the type of spray pattern like for example a full cone hollow cone flat or straight jet spray

Distribution measurement

The water distribution along the spray coverage is determined by means of an instrument called Patternator

A patternator consists of the following parts 1) Liquid collector2) Cell block3) Measure block4) Unloading block

The nozzle is above the instrument and it is orienta-ted in such a way the jet is collected into the upper liquid collectorThe liquid collector can be linear ( diagram 5 ) or round ( diagram 6 ) according to the test being runFrom the single parts in the collector the liquid is sent into the corresponding cells below (2)

The Measure block (3) determines the liquid content in each single cell then the unloading block (4) empties the instrument sending the liquid to the collection drain

There are two types of patternators

Analogic1 the different levels of liquid is visible through the transparent walls of the cells or pipes sometimes containing some kind of floating balls and a picture can be taken with a cameraDigital2 Delivering an automatic reading of the values in the cells the values being supplied as an electronic file from which a distribution curve can be easily obtained

Diagram 2 Linear distribution Diagram 3 Angular distribution

Diagram 4

Diagram 6 Circular collectorDiagram 5 Linear collector

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25wwwpnr-nozzlescomCTG SH 07 EU

LIQUID SPRAY AND SPRAY NOZZLES Spray Distribution

Normalizing distribution curve

The values obtained from the cells of the patternator showing the water quantity collected in the single cells allow for preparing a Distribution curve which can be given as a single line curve or as a row of vertical barsThese resemble the liquid level collected into the glass pipes of the old type instrumentation

The curves prepared based on the liquid level in the single cells still are not precise they depend in fact from the testing time the longer this time the larger the liquid quantity sprayedTo eliminate the influence of time from the test it is necessary to transform the effective curves to normalized curves

Normalized4) linear distribution

Normalized5) angular distribution

Please note that Maximum value is the one belonging to the series of values measured in the cellsIn addition to the distribution it is possible to normalize the intervals to with the following formulas

Normalized 6) linear interval

Normalized 7) angular interval

The linear normalized amplitude is defined inside an interval [-1 +1]The angular normalized amplitude is defined inside an interval [0+2π]

Diagram 7 Effective linear distribution curve Diagram 8 Effective angular distribution curve

Mx

xx q

q=δ

N

πθ

2=Δ

Diagram 9 Normalized linear distribution curve Diagram 10 Normalized angular distribution curve

qx is the linear distribution of a generic cellwhere qx

M is the maximum linear distribution measured

qφ is the linear distribution of a generic cellwhere qφ

M is the maximum linear distribution measured

2 is the normalized linear amplitude of the spraywhere N is the number of active cells (active cells = cells containing liquid)

2π is the normalized angular amplitude of the spraywhere N is the number of active cells (active cells = cells containing liquid)

Mq

q

ϕ

ϕϕδ =φ

φ

φ

2

N=Δλ

2

N=Δλ

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26 wwwpnr-nozzlescom CTG SH 07 EU

Evaluation of spray distribution

To evaluate distribution curves it is necessary to take three properties into consideration

a) UNIFORMITY b) MONOTONY c) SIMMETRY

As described in the following diagrams and definitions

a) UNIFORM A distribution that minimizes the ratio AAdeg

b) MONOTONE Is a distribution with a curve which grows on the left side and decreases on the left side c) SYMMETRIC Is a distribution which minimizes the Ratio A+A-

Based on the above definitions the following curves show the ideal situations

The three properties are then evaluated by means of the following parameters

1 Integral uniformity

2 Incremental uniformity

3 Symmetry index

Complete details about the above formulas and definition can be found in our Technical Bulletin REL 080002 which shall be released from our Technical Department on request

Diagram 12Normalized and monotone distribution

Diagram 11Normalized and monotone distribution

Diagram 14Ideal monotony

Diagram 15Ideal symmetry

Diagram 13Ideal uniformity

1001 sdot=MA

AU

1002

2 sdot=lowastσ

U

1001

sdot⎥⎦

⎤⎢⎣

sdotminus=

lowast

lowast

δ

ε

NI S

sum minus=lowast

M

i iδδε

A is the area included in the normalized curvewhere Adeg is the rest of the area included in the 2x1 rectangle

Left side is the area -1 0where Right side is the area 0 +1

A+ is the area included below the curve on the right sidewhere A- is the area included below the curve on the left side

where

where δrsquo is the value of normalized liquid content in the symmetric cell N number of cells containing liquid in half of the diagram

lowast

lowast sum=

N

N

i i

δ

δ N Number of cells containing liquid

A area included below the curve AM area included below the ideal curvewhere

sum minus= +lowast

1

N

i ii δδσ

N Number of cells containing liquid

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SLIQUID SPRAY AND SPRAY NOZZLES Spray Distribution

27wwwpnr-nozzlescomCTG SH 07 EU

Liquids are characterized for their property of undergoing continuous deformation when subjected to shear stress The property of fluids (liquids or gases) to resist flowing due to the existence of internal friction within the fluid is called visco-sity

Thus if we imagine the different layers of fluid sliding one over the other with friction we can imagine that viscosity is defined the force required to move a unit area of fluid for a unit distance Viscosity is measured with many different systems among which the most used are the following

The following table shows correspondences between the most used viscosity units

The viscosity value of a liquid depends upon the temperature therefore the viscosity value must always be given with reference to a temperature value The viscosity of water (20deg C) is 1 Centipoise and 1 Centistoke since water mass density = 1

KINEMATIC SAYBOLT SAYBOLT ENGLER VISCOSITY UNIVERSAL FUROL

Centistoke Sq feetsec SSU SSF Degrees

100 000001076 310 --- 100

500 000005382 424 --- 137

1000 00001076 588 --- 183

1566 00001686 80 --- 245

2052 00002209 100 --- 302

2515 00002707 120 --- 357

4295 00004623 200 --- 592

1080 0001163 500 523 1460

1510 0001625 700 720 2044

1942 0002090 900 921 2628

3023 0003254 1400 143 4090

3885 0004182 1800 183 5260

5394 0005806 2500 254 7300

10788 001161 5000 509 146

15103 001626 7000 712 204

19419 002092 9000 916 263

32365 003483 15000 1526 438

METHOD UNIT DIMENSIONS NOTES

1 Dynamic viscosity(Absolute viscosity) Poise ML T-1 Poise = 100 Centipoises = (1 dyne per seccm2)

2 Kinematic viscosity Stoke L2 T-1 1 Stoke = 100 Centistoke = (cm2sec)Kinematic viscosity = Dynamic viscositydensity

3 SSUSSF

One of the most widely instruments to determine is the Saybolt viscosimeter which measures the time in seconds required for a fixed volume of a given liquid to flow through an orificeSSU = Seconds Saybolt Universal relates to a smaller orifice for less viscous liquidsSSF = Seconds Saybolt Furol relates to a larger orifice for more viscous liquids

LIQUID SPRAY AND SPRAY NOZZLES Influence of liquid viscosity

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Viscosity influence on nozzle flow rate

AlI nozzle Catalogue data refer to spraying water (water cinematic viscosity is equal to 1 Centistoke)A liquid with viscosity higher than water will require more energy to be pumped and sprayed and will flow with lower velocity at the same pressure and this will cause a reduction in the turbulence of the flow For the above reason nozzles working on the turbulence principle like normal full cone nozzles and whirl hollow cone nozzles will show an increase in capacity while spraying liquids with viscosity higher than water This increase is very consistent for small size nozzles where the small radius of the whirl chamber tends to cause high turbu-lence in the flow and tends to diminish and to disappear for nominal capacity valves (capacity values at 3 bar) larger than 15 liters per minute

The graph below shows for a liquid with a viscosity of about 4 Centistokes typical variations in the nozzle flow rate value for different values of the nozzle whirl chamber diameter As it may be seen these variations can be neglected in most practical applications where nozzles with whirl chamber diameters well over 3 mm are used

For other types of nozzles not working on the turbulence principle the increase on viscosity will simply reduce the liquid exit velocity at the orifice thus causing a decrease in capacity Experience shows that this decrease ranges between 3 and 6 of nominal water capacity that is to say that the variation introduced is in the same order of magnitude as the nozzle flow rate toler-ance

Viscosity influence on nozzle spray angle and spray pattern

With reference to the theory of jet break-up and droplet information it can be easily imagined that spraying a liquid more viscous than water is a difficult task

Al the properties of the spray tend to worsen therefore one can expectA higher value for the minimum operating pressure that is the pressure value which allows for obtaining a well defined 1 spray with the expected spray angle A worse spray distribution since the viscous behavior of the liquid makes it more difficult to pro-duce fine droplets and 2 to distribute them evenly with the desired spray pattern A narrower spray angle It is difficult to give guidelines since results on different nozzles at different pressures and with 3 different liquids are scarcely predictableHowever our experience shows that in many cases the use of impact nozzles can give acceptable results where all other type of nozzle failsA laboratory test or a field test are stili the safest way to obtain sound results

50

45

40

35

30

25

20

15

10

5

0 2 3 4 5 6 7 8 9

Increase Flow rate vs Whirl Chamber Diameter

Incr

ease

Flo

w R

ate

[mm

]

Whirl Chamber Diameter [mm]

LIQUID SPRAY AND SPRAY NOZZLES Influence of liquid viscosityLI

QUID

SPR

AYAN

D SP

RAY

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LES

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With reference to the Bernoulli Rule as exposed in page 6 one can say that the pressure energy of the liquid flow at the nozzle inlet is transformed totally (minus some losses due to friction inside the nozzle) into liquid velocity at the nozzle orificeCatalogue figures give nozzle capacities when spraying waterIf the specific gravity or density of the liquid is different from that of water the available pressure energy will produce a different liquid velocity at the nozzle orificesIn other words a given quantity of energy will spray always the same quantity of liquid mass but different volumes (flow rates) according to the liquid specific gravity or density

Therefore a liquid heavier than water will exit the nozzle with a lower velocity at lower flow rate while to the contrary a liquid lighter than water will be sprayed at higher velocity at higher flow rate

The following formula is to be applied

The table below gives the value of a correction factor to obtain the flow rate of a liquid with different specific weight as water

WhereQL Liquid flow rateQW Water flow rateF Correction factor

kgliter Libregallon F

06 50 129

07 58 120

08 67 112

09 75 105

10 83 100

11 92 095

12 100 091

13 109 088

14 117 085

15 125 082

16 134 079

17 142 077

18 150 075

19 159 073

20 167 071

QL = F QW8

LIQUID SPRAY AND SPRAY NOZZLES Influence of liquid specific gravity

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30 wwwpnr-nozzlescom CTG SH 07 EU

The spraying water impact of a nozzle depends on several factors and more precisely spray distribution pattern and spray angle The first step to calculate the impact value which is usually expressed in Kilograms per square centimeter is to deter-mine Total Theoretical lmpact Value using the following formula

The obtained value has to be multiplied by the Total Theoretical Impact per Square Centimeter Coefficient (E)The final value is the Spraying Liquid Impact expressed in kgpcm2Of course not alI the energy of the fluid vein is transferred to the impact point

A part of this energy sometimes a considerable part goes to obtain a desired spraying angle by having the liquid vein acquire a high rotational speed inside the whirl chamber The highest value of impact is obtained with straight jet nozzle and the value can be calculated multiplying spraying pressure per 19The tables below containing the Total Theoretical Impact sqcm coefficient values for different spray pattern nozzles for a dis-tance of 300 mm

[kgpcm2]

TOTAL THEORETICAL IMPACT PER SQ CM COEFFICIENT AT DISTANCE OF 300 MM (E)

Spray Flat jet nozzle Spray Full cone nozzle Spray Hollow cone nozzle Angle Angle Angle

15deg 0300 15deg 0110 25deg 0180 35deg 0130 30deg 0025 40deg 0120 50deg 0100 50deg 0010 65deg 0070 65deg 0004 60deg80deg 001002 80deg 0050 80deg 0002 100deg 0001

WhereQ is the flow rate at working pressure in lpmP is the pressure value in kgpcm2

[kgpcm2]TTI = 0024 Q P

SLI = E TTI

9

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SLIQUID SPRAY AND SPRAY NOZZLES Jet impact

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Jet impact diagram

A further parameter to characterize the performance of a spray nozzle is the distribution of the jet impact force which could be derived by means of mathematical methods from the values of the spray distribution onto the surface covered by the spray but which can more easily be measured with the help of specifically designed instrumentation

In some applications the jet impact force Is the most important parameter used to realize the required processSteel sheet descaling in a rolling mill is a typical example where the jet impact is required to take away the surface scale and obtain a perfectly even surfaceFor that reason special nozzles have been developed to perform this very task where service life impact value and spray distribution reach the values required for satisfactory resultThese test are performed in a laboratory equipped with a specifically designed instrumentation where the high pressures involved in these process can be reached which can measure the pressure values along a matrix of points distributed in the spray area covered by the nozzle

These values are supplied both in a table of values and as a 3D pressure diagram similar to those shown below

On such applications where producing high impact values in the jet is necessary it is of paramount importance that the liquid flow turbulence is kept to a minimum and therefore it is widely used to insert into the nozzle entrance devices designed to improve the operating conditions by forcing the liquid flow through straight passages with several different shapes by doing so the impact delivered by the spray is increased with the same feed pressure

One typical shape used by Pnr is shown on the right and the two dia-grams below show the impact force diagrams for the same nozzle with and without a flow straightener the reduction of flow turbulence can lead in increase of impact force often higher than 20Further improvements of course are available when the nozzle inside profile is properly designed in order to avoid sharp cross section changes and all surfaces are finished as smoothly as possible

Typical design of a Pnr flow straightener

Impact pressure diagram with flow straightenerImpact pressure diagram without flow straightener

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LIQUID SPRAY AND SPRAY NOZZLES Jet impact

32 wwwpnr-nozzlescom CTG SH 07 EU

LIQUID SPRAY AND SPRAY NOZZLES Pressure drop through a nozzle

Pressure drop through a nozzle

Some of our customers have asked us In the past which Is the pressure drop through a nozzle since they consider a nozzle one of the parts in a piping like a valve or an elbow which causes a given pressure drop along the line

The reality is different and can be easily understood when considering the Bernoulli formula [2] as given at page 19 of this manual the formula says that the total energy of a liquid flow is made from the addition of three facors

Potential energy due to elevationbullPressure energybullVelocity energybull

When we apply the formula at the entrance and at the outlet ( the orifice ) of a nozzle and we neglect the influence of turbulence losses in between we can easily see that

The potential energy variation can be neglected because of the limited dimensions of the nozzle since the distance bullbetween the nozzle entrance and the nozzle orifice plays no role-The pressure energy variation is important since the liquid pressure value falls abruptly from the pressure inside the feed bullpipe to the ambient pressureThe velocity energy variation is also consistent since the liquid is ejected from the orifice at high speedbull

In other words the pressure energy of the liquid flowing through the orifice is suddenly transformed in liquid drops velocity which is exactly what a nozzle is designed to do

This is shown from equation [3] at page 19 which allows the exit velocity from the nozzle to be calculated from the pressure inside the pipe ( we actually consider the pressure difference between the inside of the pipe and the ambient pressure in this formula )

In other words all the energy still available at the nozzle is converted into velocity or if you so prefer you have a total pressure fall The system designer shall therefore evaluate all the pressure drop between the pump outlet flange and the nozzle entrance in order to be sure that the nozzle feed pressure is sufficient to assure the desired capacity for the liquid being sprayed

parameters valuesat nozzle outlet

nozzle inlet nozzle oulet or orice

feed pressure

inlet velocity

parameters valuesat the nozzle inlet

(A)potential elevation

energy

(A)velocity ( kinetic ) energy

(A)pressure energy

ambient pressure

exit velocity

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33wwwpnr-nozzlescomCTG SH 07 EU

NOZ

ZLE

MAT

ERIA

LS

The choice of the right material for a nozzle is sometimes the most important one to do since the nozzle operating life depends upon it There are several factors to influence or shorten the nozzle operating life sometimes more than one at the same time the most important being

Wear from solid particles suspended into the liquid being sprayed1 Chemical corrosion from the liquid being sprayed 2 Chemical corrosion from the ambience outside the nozzle3 Exposure to high temperature 4 Exposure to mechanical shocks5

NOZZLE MATERIALSPnr material codes 34Properties of materials 35Mechanical properties of materials 39Chemical resistance of materials 40

NOZZLE MATERIALS

34 wwwpnr-nozzlescom CTG SH 07 EU

PNR has adopted a short code to identify construction materials for nozzles and nozzle partsHere below the most frequenty used materials

MATERIAL STANDARDS

The following standards are mentioned with reference to materials identification

NOZ

ZLE

MAT

ERIA

LS

A1 Free Cutting Steel E1 TEFLONreg (PTFE) L3 NICROFERreg 5923

A2 Carbon Steel E3 DELRINreg (POM) L4 STELLITEreg 6

A8 Zinc Plated Mild Steel E6 PERSPEXreg (PMMA) L5 HASTELLOYreg B2

A9 Nickel Plated Mild Steel E7 VITONreg (FPM) L6 HASTELLOYreg C4

B2 AISI 304 Stainless Steel E8 NBR- Sh 70 Rubber L61 HASTELLOYreg C22

B3 AISI 316 Stainless Steel E81 SANTOPRENEreg Rubber L62 ULTIMETreg

B31 AISI 316L Stainless Steel E82 KLINGERITEreg L7 NICKEL 201

B4 AISI 321 Stainless Steel E83 HYPALONreg L8 HASTELLOYreg C276

B8 AISI 309 Stainless Steel E91 Silicon L9 SANICROreg 28 SS

B81 AISI 310 Stainless Steel F12 Tungsten Carbide (TC) N1 AISI 302 Stainless Steel

C1 AISI 420 St Steel hardened F2 PIREXreg P6 ABS

C4 AISI 317 Stainless Steel F3 Rubin P7 FASIT OIL

C6 SAF 2205 Stainless Steel F4 Zapphire P8 EPDM ShA Rubber

D1 Polyvinylchloride (PVC) F5 Ceramic P9 STIROLUXreg 637

D2 Polypropylene (PP) F6 Silicon Carbide (SC) T1 Brass

D3 Polyamide (PA) G1 Cast Iron T3 Copper

D5 Powder Charged PP H1 Titanium T5 Bronze

D6 Fiberglass Charged PP L1 MONEL 400 T8 Nickel Plated Brass

D7 High Density Polyethylene L2 INCOLOYreg 825 V1 Aluminium

D8 Polyvinylidenefluoride (PVDF) L21 INCONELreg 600 V7 Aluminium ENP

STANDARD ORGANIZATION COUNTRY STANDARD CODE

AFNOR Association Franccedilaise de Normalisation France NF

AISI American Iron and Steel Institute USA AISI

ANSI American National Standards Institute USA ANSI

ASTM American Society for Testing and Materials USA ASTM

BSI British Standards Institution UK BS

DIN Deutsches Institut fuumlr Normung Germany DIN

DSIT Dansk StandardsInformation Technology Denmark DS

ISO International Organization for Standardization International ISO

JIS Japanese Institute for Standard Japan JIS

UNI Ente Nazionale di Unificazione Italy UNI

NOTEThe complete list of the Materials Codes may be requested to our Technical Service mentioning release code TGCE CODMAT

NOZZLE MATERIALS PNR material codes

35wwwpnr-nozzlescomCTG SH 07 EU

NOZ

ZLE

MAT

ERIA

LS

B1 AISI 303 STAINLESS STEEL

Chemical composition CR 1750 NI 850 S 025 Coding correspondence

Type Stainless Steel Austenitic AISI 303

Hardening Not possible BS 303 S 21

Annealing 1050 1100deg C in water DIN Wnr 14305

Welding Possible with precautions Euro X10CrNiS1809

Corrosion properties

Good resistance Atmospheric exposure food substances organic chemicalsLow resistance Chlorides reducing acids and over 800deg C

JIS SUS 303

NF Z6CN 18-09

SIS 2346

UNI XWCrNiS 1809

B3 AISI 316 STAINLESS STEEL

Chemical composition C 005 CR 170 NI 120 MO 225 Coding correspondence

Type Stainless Steel Austenitic AISI 316

Hardening Not possible BS 316 S 21

Annealing 1050 1100deg C in water DIN Wnr 14401

Welding Easy using same steel electrodes Euro X6CrNiMo17122

Corrosion properties

Good resistance Atmosphere great number of salts organic acids foodsLow resistance Solutions of reducing acids temperatures over 500deg C

JIS SUS 316

NF Z6CND 17-11

SIS 2347

UNI X5CrNiMo1712

B31 AISI 316L STAINLESS STEEL

Chemical composition C 003 CR 170 NI 130 MO 225 Coding correspondence

Type Stainless Steel Austenitic AISI 316 L

Hardening Not possible BS 316S12

Annealing 1050 1100deg C in water DIN Wnr 14404

Welding Easy using same steel electrodes Euro X3CrNiMo1810

Corrosion properties

Good resistance Atmosphere great number of salts organic acids foods salt waterLow resistance Solutions of reducing acids temperatures over 500deg C

JIS SUS 316L

NF Z2CND17-12

SIS 2348

UNI X2CrNiMo 1712

NOZZLE MATERIALS Properties of materials

36 wwwpnr-nozzlescom CTG SH 07 EU

C1 AISI 420 STAINLESS STEEL

Chemical composition C 020 CR 1300 Coding correspondence

Type Stainless Steel Martensitic AISI 420

Hardening 980deg - 1030deg C in oil BS 420 S 29

Annealing 750deg - 800deg C in air DIN Wnr 14021

Welding Possible with precautions Euro X20Cr13

Corrosion properties Good resistance Drinkable water steamgasoline oil alcohol ammonia

JIS SUS 420 J1

NF Z20C13

SIS 2303

UNI X20Cr13

C2 AISI 416 STAINLESS STEEL

Chemical composition C 012 CR 1250 S 022 Coding correspondence

Type Stainless Steel Martensitic AISI 416

Hardening 950deg - 1100deg C in oil BS 416 S 21

Annealing 750deg - 800deg C DIN Wnr ---

Welding Not possible Euro X120CrS13

Corrosion properties Good resistance Drinkable water steamgasoline oil alcohol ammonia

JIS SUS 416

NF Z12CF13

SIS ---

UNI X12CrS13

D8 POLYVINYLIDENE FLUORIDE (PVDF)

Description HIGH-MOLECULAR WEIGHT THE TOUGHEST OF THE FLUOROCARBON RESINS

Trade names amp SuppliersKYNAR (Atochem North America Inc formerly Penwalt Corporation)

SOLEF (Solvay Polymer Corporation)

Physical andMechanical Properties

Excellent resistance to abrasion and stress fatigue

Extremely pure opaque white resin

Thermal Properties UsefuI in temperatures ranging from -73 149degC (-100 300degF)Heat deflection temperature is (8090deg C at 182 Bars (176 194deg F at 264 psi)

Chemical Compatibility

Excellent chemical resistanceCan be used with wet or dry halogens most strong acids and bases aliphatics aromaticsalcohols and strong oxidizing agentsNot recommended for contact with ketones esters amines and some organic acids(fuming sulfuric acid)

NOZZLE MATERIALS Properties of materialsN

OZZL

E M

ATER

IALS

37wwwpnr-nozzlescomCTG SH 07 EU

E1 POLYTETRAFLUOROETHYLENE (PTFE)

Description FLUOROPLASTIC THAT HAVE SOME OR ALL OF THEIR HYDROGEN MOLECULESREPLACED BY FLUORINE

Trade names amp Suppliers

TEFLON TFE FEP and PFA (Dupont Polymer Products)

NEOFLON (Daikin)

FLUON (ICI Americas Inc)

SST-2SST-3 (Shamrock Technologies Inc)

Physical andMechanical Properties

Low coefficient

Low adhesiveness

Buona resistenza agli agenti atmosferici

Good weatherabilityLow resistance to creep and wear unless reinforced with glass figravebers which results in superior resistance

Thermal Properties High and low temperature stabilityHeat deflection temperatures range from 4855deg C at 182 bar (118-132deg F at 264 psi)

Chemical CompatibilityChemically inert

Totally insoluble

E3 ACETAL (ACETAL HOMOPOLYMERS AND COPOLYMERS)

Description HIGHLY CRYSTALLINE RESINS BASED ON FORMALDEHYDE POLYMERIZATION TECHNOLOGY

Trade names amp Suppliers

DELRIN (Dupont Polymer Products Corporation)

CELCON (Hoechst Celanese Corporation)

ULTRAFORM (BASF Corporation)

RTP 800 (RTP Corporation)

LUPITAL amp TENAL (Franklin Polymers Inc)

FULTRON 404 (ICI Americas Inc)

Physical andMechanical Properties

High tensile strength rigidity and esilience

High fatigue endurance

Excellent dimensional stability

Low coefficient of friction

Outstanding abrasion and wear resistance

Excellent creep resistance

Thermal Properties Heat deflection temperatures range from 110 -136deg C at 182 bars(230 - 270deg F at 264 psi) higher if glass figravelled

Chemical Compatibility

Remains stable in long-term high temperature water immersionExcellent resistance to chemicals and solvents but prolonged exposure to strong acids not recommendedNote Suitable for close-tolerance high-performance partsAvailable for machined parts or may be injection molded

NOZZLE MATERIALS Properties of materials

NOZ

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38 wwwpnr-nozzlescom CTG SH 07 EU

L6 HASTELLOY C4

PHYSICAL AND MECHANICAL PROPERTIES CHEMICAL COMPOSITION CORROSION RESISTANCE

R = 650800 Mpa C = 0015 max

Very good against pitting and tensile-corrosion specially in oxydizing atmosphereResistance in welded joints definitely better than C 276 lower than C22

Rp02 = 250470 Mpa Ni = 65

HRB = 90 Cr = 160

Mo = 155

W = --

Fe = 3 max

Ti = 05

Co = 2 max

APPLICATIONSRecommended for applications with strongly oxidizing atmosphere

L61 HASTELLOY C 22

PHYSICAL AND MECHANICAL PROPERTIES CHEMICAL COMPOSITION CORROSION RESISTANCE

R = 700800 Mpa C = 001 max

Excellent performances with oxydizing atmospheres as well as for pitting and tensile-corrosion conditionsVery good resistance in reducing atmospheres and for welded joints

Rp02 = 360420 Mpa Ni = 56

HRB = 93 Cr = 22

Mo = 13

W = 3

Fe = 3

Ti = --

Co = 25 max

APPLICATIONSChemical industry (gas ducts gas washing and treatment systems phosphoric acid production) Heat exchangers pumps chlorination reactors

L8 HASTELLOY C 276

PHYSICAL AND MECHANICAL PROPERTIES CHEMICAL COMPOSITION CORROSION RESISTANCE

R = 600800 Mpa C = 0015 max

Very good in reducing and oxydizing atmospheresVery good against pitting and tensile-corrosionAcceptable resistance in welded jointsIn cast parts excessive segregation not eliminated by thermal treatment of annealing makes it convenient to use C22 or C4 qualitieswhich assure better corrosion resistance and mechanical properties

Rp02 = 300370 Mpa Ni = 57

HRB = 90 Cr = 145165

Mo = 1517

W = frac345

Fe =

V = 035 max

Co = 25 max

APPLICATIONSChemical industry (air ducts scrubbers fans) Paper industry Thermoelectric plants Steel thermal treatments

NOZ

ZLE

MAT

ERIA

LSNOZZLE MATERIALS Properties of materials

39wwwpnr-nozzlescomCTG SH 07 EU

MATERIALTENSILE STRENGHT

CORROSION RESISTANCERp 02 R

20degC 800degC 20degC 800degC

(68degF) (1408degF) (68degC) (1408degC)

AISI 302 280 100 680 200

Good sensitive to corrosionbetween grains for slow heatingand cooling in the 450-900deg Crange temperature

AISI 303 280 100 680 200 Discrete

AISI 304304L 270 90 600 100Good especially for 304L304 sensitive to corrosionbetween grains like AISI 302

AISI 309 250 100 640 220 Good Sensitive to corrosion between grains like AISI 302

AISI 310 310 170 650 270Good (gt 304 - 304L)Sensitive to corrosionbetween grains like AISI 302

AISI 316316L 270 110 560 220 Very high especially for 316L

AISI 321 210 100 540 140 Good

AISI 347 280 120 620 200 Good

AISI 416 620 70 750 90

Good in medium corrosive ambient (atmosphere water gasoline alcohol N1-13 foods)Not in high corrosive

BRASS 110-150 --- 360-410 --- Good especially when nickel plated

BRONZE 100-300 --- 200-600 --- Discrete especially with sea water

CAST IRON le 500 V 100-800 V

NICKEL ALLOYS 100-1000 V 300-1300 VVery high also for high temperature To use in the temperaturerange 800-1200deg C

PLASTICS --- --- 20-200 ---

Good also for erosionGenerally they are attackedwith oxidizers like nitric acidhalogens ect

PTFE --- --- 30-40 ---

Very high except for elementarystate of alkaline metalsand to compounds containingfluorine at high temp

DUPLEX STEEL gtAISI 3 gtAISI 3 gtAISI 3 gtAISI 3 Very high also with high temperatureand also for pitting

TITANIUM alloy 195-850 V 300-900 VVery high in oxidizing ambientVery low in reducing ambient and with compounds containing fluorine

Legend Rp 02 = 02 YIELD STRENGHT [MPa]R = ULTIMATE TENSILE STRENGHT [MPa]V = To verify time by time

NOZZLE MATERIALS Mechanical properties of materials

NOZ

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ERIA

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73wwwpnr-nozzlescomCTG SH 07 EU

PIPI

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PIPINGPipes data 74Economic pipe sizes 75Pressure drop in clean steel pipes 76Flange dimensions 78Sieve size conversion chart 80

PIPING

74 wwwpnr-nozzlescom CTG SH 07 EU

The following table report the data of pipes according to ANSI B3619 that is one of the most used standards that regulate welded stainless steel pipes

DN NPS OD[mm]

SCHEDULE

5S 10S 40SSTD 80SXS

t m t m t m t m

[mm] [kgm] [mm] [kgm] [mm] [kgm] [mm] [kgm]

6 18 103 NA NA 124 028 173 037 241 048

8 14 137 NA NA 165 050 224 064 302 081

10 38 172 NA NA 165 064 231 086 320 112

15 12 213 165 081 211 101 277 128 373 164

20 34 267 165 103 211 130 287 171 391 223

25 1 334 165 131 277 212 338 254 455 328

32 1frac14 422 165 167 277 273 356 344 485 453

40 1frac12 483 165 192 277 315 368 411 508 549

50 2 603 165 242 277 399 391 551 554 759

65 2frac12 730 211 374 305 534 516 875 701 116

80 3 889 211 458 305 655 549 115 762 155

90 3frac12 1016 211 525 305 752 574 138 808 189

100 4 1143 211 592 305 849 602 163 856 226

125 5 1413 277 960 340 117 655 221 953 314

150 6 1683 277 115 340 140 711 287 1097 432

200 8 2191 277 150 376 202 818 431 1270 656

250 10 2730 340 229 419 282 927 611 1270 827

300 12 3239 396 317 457 365 953 749 1270 988

350 14 3556 396 348 478 419 NA NA NA NA

400 16 4064 419 421 478 480 NA NA NA NA

450 18 457 419 474 478 541 NA NA NA NA

500 20 508 478 602 554 696 NA NA NA NA

550 22 559 478 662 554 767 NA NA NA NA

600 24 610 554 837 635 959 NA NA NA NA

Where

DN = Nominal diameter NPD = Nominal Pipe Size OD = Outside Diameter t = Wall Thickness m = Specific WeightPIPI

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PIPING Pipes data

75wwwpnr-nozzlescomCTG SH 07 EU

The following Specific Pressure Drops (Y) are normally used in the good engineering practice(where Y=ΔPL ΔP Pressur Drop and L Pipe Lenght)

For pipe sizing the Velocity (V) is also usedIn the following table are shown the typical liquid velocities in steel pipes

Some fixed pressure drop values indicationsfor gate valves (fully open) consider a pressure drop of 5 metersbullfor normal bends consider a pressure drop of 5 metersbullfor a check valve consider a pressure drop of 15 metersbull

In the succeeding tables we show the velocity and specific pressure drop for several flow rates and pipe diameters

Not boiling waterY = 02divide05 bar100 m for pump discharge (07 bar100 m max if P gt 50 bar)

Y lt 0110 bar100 m for pump suction

Boiling water Y = 004divide005 bar100 m for pump suction (velocity = 03divide09 ms)

LIQUID LINE TYPE

Specific Pressure Dropsvs Velocity [ms]

0 lt V lt 2 3 lt V lt 10 10 lt V lt 20

NOT BOILING WATER

Pump suctionPump discharge (long)Discharge leads (short)Boiler feedDrainsSloped sewer

03 divide 0606 divide 0912 divide 2712 divide 2709 divide 12

-

06 divide 1209 divide 1515 divide 3715 divide 3709 divide 1509 divide 15

09 divide 1812 divide 2124 divide 4224 divide 42

-12 divide 21

HYDROCARBON LIQUIDS(normal viscosity)

Pump suctionDischarge heather (long)Discharge leads (short)Drains

05 divide 0808 divide 1112 divide 2709 divide 12

06 divide 1209 divide 1515 divide 3709 divide 15

09 divide 1812 divide 2124 divide 46

-

MEDIUM VISCOSITY OILPump suctionDischarge (short)Drains

--

03

05 divide 0901 divide 0209 divide 15

08 divide 1501 divide 0312 divide 18

OTHER WATERCooling tower Chilled waterSea water and generally foulingwater (long pipes) ()

06 divide 09 09 divide 15 12 divide 21

Note () In this case Cameron method has to be used with C=1 Y = 005 divide 012 bar100 m for principal manifold Y = 012 divide 023 bar100 m for secondary manifold

PIPI

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PIPING Economic pipe sizes

76 wwwpnr-nozzlescom CTG SH 07 EU

18rdquo 14rdquo

1 0350 0370 0200 0090 38rdquo 12rdquo

2 0705 1340 0395 0331 0223 0082 0145 0029 34rdquo

3 1060 2890 0593 0673 0333 0176 0217 0061 0125 0016 1rdquo

4 1410 4940 0788 1150 0444 0291 0290 0101 0167 0027 0110 0010

5 1760 7460 0985 1750 0556 0424 0362 0149 0209 0040 0137 0014

6 1180 2460 0667 0594 0434 0207 0251 0054 0165 0019 114rdquo

8 1580 4060 0892 1020 0579 0351 0335 0091 0219 0033 0126 0009 112rdquo

10 1110 1530 0724 0534 0418 0136 0274 0049 0158 0012 0116 0006

15 1670 3250 1090 1130 0627 0284 0411 0099 0236 0026 0174 0012

20 2rdquo 2230 5600 1450 1900 0836 0481 0549 0168 0315 0043 0233 0021

30 0212 0013 212rdquo 2170 4130 1250 1020 0823 0353 0473 0092 0348 0043

40 0283 0022 0190 0007 2900 7180 1670 1760 1100 0606 0631 0155 0465 0073

50 0354 0032 0237 0012 2090 2700 1370 0911 0789 0233 0581 0108

60 0424 0044 0284 0017 2510 3810 1650 1290 0943 0321 0697 0150

70 0495 0079 0332 0022 3rdquo 2930 5120 1920 1720 111 0434 0814 0199

80 0566 0074 0379 0028 0248 0010 312rdquo 2190 2210 126 0554 0925 0253

90 0636 0093 0427 0035 0279 0013 0209 0006 2470 2770 142 0692 1040 0319

100 0707 0114 0474 0043 0310 0015 0232 0007 4rdquo 2740 3400 158 0843 1160 0392

150 1060 0238 0711 0090 0464 0031 0349 0016 0272 0008 4110 7440 236 181 1740 0828

200 1410 0414 0948 0153 0619 0053 0466 0027 0362 0014 315 314 2330 1450

250 1760 0625 1190 0233 0774 0080 0581 0040 0453 0021 5rdquo 2900 2200

300 2120 0889 1420 0324 0930 0112 0698 0055 0543 0030 0352 0011 3480 3070

350 2470 1190 1660 0438 1080 0150 0815 0074 0634 0040 0411 0014 6rdquo 4070 4160

400 2830 1550 1900 0563 1240 0195 0935 0096 0724 0051 0469 0018 0341 0007 4650 5380

450 3180 1930 2130 0707 1390 0242 1050 0120 0815 0063 0528 0022 0366 0009 5230 6790

500 3540 2380 2370 0867 1550 0298 1170 0147 0902 0076 0587 0027 0407 0011

550 3880 2870 2610 1040 1700 0354 1280 0174 0991 0092 0645 0032 0447 0013

600 4240 3390 2840 1220 1860 0418 1400 0204 1090 0110 0704 0037 0488 0015

650 4590 5560 3080 1420 2010 0486 1510 0239 1180 0127 0762 0043 0529 0017

700 4950 4550 3320 1650 2170 0560 1630 0275 1270 0146 0821 0050 0569 0020

750 5300 5200 3560 1880 2320 0637 1750 0314 1360 0164 0879 0057 0610 0023

800 3790 2130 2480 0721 1860 0354 1450 0185 0936 0064 0651 0025 8rdquo

850 4030 2390 2630 0805 1980 0395 1540 0209 1000 0072 0692 0028 0403 0007

900 2790 0901 2090 0438 1630 0232 1050 0008 0732 0032 0427 0008

950 2940 1000 2210 0486 1720 0258 1120 0087 0773 0036 0451 0010

1000 3100 1110 2320 0534 1810 0284 1170 0096 0814 0039 0474 0011

1100 3410 1290 2560 0643 1990 0341 1290 0116 0895 0047 0522 0012

1200 3720 1 580 2800 0763 2170 0403 1410 0135 0974 0055 0569 0015

1300 3030 0890 2360 0473 1530 0157 1060 0063 0616 0017

1400 3260 1020 2540 0544 1640 0183 1140 0072 0664 0019

1500 3490 1170 2720 0617 176 0208 1220 0083 0712 0022

1600 3720 1330 2890 0697 1880 0234 1300 0093 0758 0025

1700 10rdquo 3950 1490 3080 0784 1990 0260 1380 0104 0806 0028

1800 0546 0010 3260 0875 2110 0290 1470 0116 0854 0032

1900 0575 0012 3440 0965 2230 0323 1550 0129 0901 0034

2000 0606 0012 3617 1060 2340 0356 1630 0143 0946 0037

2200 0667 0015 3980 1280 2580 0429 1790 0172 1050 0045

2400 0727 0017 12rdquo 2820 0507 1950 0200 1140 0053

2600 0788 0021 0563 0009 3050 0589 2110 0234 1230 0061

2800 0848 0023 0606 0010 14rdquo 3280 0676 2280 0268 1330 0070

3000 0909 0026 0649 0011 0532 0007 3520 0773 2440 0306 1420 0080

3500 1060 0035 0760 0015 0620 0009 4110 105 2850 0416 1660 0108

4000 1210 0045 0866 0020 0709 0012 16rdquo 4690 135 3250 0532 1900 0139

4500 1360 0056 0976 0025 0798 0015 0606 0007 3660 0674 2130 0173

5000 1520 0069 1080 0029 0886 0018 0674 0009 4070 0822 2370 0212

6000 1810 0097 1290 0042 1070 0026 0808 0013 18rdquo 4880 1160 2850 0301

7000 2120 0130 1510 0055 1240 0035 0940 0017 0741 0010 5690 1580 3310 0403

8000 2420 0168 1730 0072 1420 0045 1080 0022 0847 0012 6510 2050 3790 0525

9000 2730 0210 1950 0091 1600 0056 1210 0027 0954 0015 4270 0659

10000 3030 0257 2170 0111 1770 0067 1350 0033 1050 0019 4740 0801

Legend Q Water Flow Rate (Lpm) V Velocity (ms) Y Specific Pressure Drops (bar100m)Water at ambient temperature in straight pipe

SPECIfIC PRESSURE DROPS fOR WATER fLOW IN CLEAN STEEL PIPE SCH 10S

Q V Y V Y V Y V Y V Y V Y V Y V Y [lm] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m]

PIPI

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77wwwpnr-nozzlescomCTG SH 07 EU

SPECIfIC PRESSURE DROPS fOR WATER fLOW IN CLEAN STEEL PIPE SCH 40S

Legend Q Water Flow Rate (Lpm) V Velocity (ms) Y Specific Pressure Drops (bar100m)Water at ambient temperature in straight pipe

18rdquo 14rdquo

1 0458 0726 0251 0170 38rdquo 12rdquo

2 0918 2590 0501 0600 0272 0136 0170 0044 34rdquo

3 1380 5590 0752 1220 0407 029 0255 0091 0144 0023 1rdquo

4 1840 9570 1000 2090 0543 048 0340 0151 0192 0038 0120 0012

5 2290 14450 1250 3180 0679 070 0425 0223 0241 0057 0150 0017

6 1500 4460 0815 0980 0510 0309 0289 0077 0180 0024 114rdquo

8 2010 7360 1090 1690 0680 0524 0385 0129 0240 0041 0138 0011 112rdquo

10 1360 2520 0850 0798 0481 0193 0300 0061 0172 0015 0127 0008

15 2040 5370 1280 1690 0722 0403 0450 0124 0258 0032 019 0015

20 2rdquo 2720 9240 1700 2840 0962 0683 0600 0210 0344 0054 0254 0026

30 0231 0016 212rdquo 2550 6170 1440 1450 0900 0442 0517 0114 038 0053

40 0308 0027 0216 0010 3400 10720 1920 2500 1200 0758 0689 0193 0507 0091

50 0385 0039 0270 0017 2410 3830 1500 1140 0861 029 0634 0135

60 0462 0055 0324 0023 2890 5410 1800 1610 103 0400 0761 0187

70 0539 0098 0378 0031 3rdquo 3370 7270 2100 2150 1210 0541 0888 0248

80 0616 0092 0432 0039 028 0014 312rdquo 2400 2760 1380 0690 1010 0315

90 0693 0115 0486 0048 0315 0017 0235 0008 2700 3470 1550 0862 1140 0397

100 0770 0141 0540 0059 035 002 0261 0010 4rdquo 3000 4250 1720 1050 1270 0488

150 1150 0295 0810 0125 0524 0042 0392 0021 0304 0011 4500 9300 2580 2260 1900 1030

200 1540 0512 1080 0212 0699 0072 0523 0036 0405 0019 3440 3910 2540 1810

250 1920 0773 1350 0322 0874 0108 0653 0053 0507 0028 5rdquo 3170 2740

300 2310 1100 1620 0449 105 0152 0784 0074 0608 004 0387 0014 3800 3820

350 2690 1470 1890 0606 122 0203 0915 0099 0710 0053 0452 0018 6rdquo 4440 5180

400 3080 1920 2160 0780 14 0264 1050 0128 0811 0068 0516 0023 0375 0009 5070 6690

450 3460 2390 2430 0979 157 0328 1180 0161 0912 0084 0581 0028 0402 0012 5710 8450

500 3850 2950 2700 1200 175 0403 1310 0196 1010 0101 0646 0034 0447 0014

550 4230 3550 2970 1440 192 0479 1440 0232 1110 0122 0710 0041 0491 0016

600 4620 4200 3240 1690 2100 0566 1570 0273 1220 0146 0775 0047 0536 0019

650 5000 6880 3510 1970 2270 0658 1700 0319 1320 0169 0839 0055 0581 0022

700 5390 5630 3780 2280 2450 0759 1830 0368 1420 0194 0904 0063 0625 0025

750 577 6440 4050 2600 2620 0863 1960 042 1520 0218 0968 0072 067 0029

800 4320 2950 2800 0977 2090 0473 1620 0246 1030 0081 0715 0032 8rdquo

850 4590 3310 2970 1090 2220 0528 1720 0277 1100 0091 076 0036 0439 0009

900 3150 1220 2350 0585 1820 0308 1160 0100 0804 0041 0465 001

950 3320 1350 248 0649 1930 0342 1230 0111 0849 0045 0491 0012

1000 3500 1500 261 0714 2030 0377 1290 0122 0894 0049 0516 0013

1100 3850 1750 2870 0860 2230 0452 1420 0147 0983 0059 0568 0015

1200 4200 2140 3140 1020 2430 0534 1550 0172 1070 0069 0620 0018

1300 3400 1190 2640 0627 1680 0200 1160 008 0671 0021

1400 3660 1370 2840 0722 1810 0232 1250 0091 0723 0024

1500 3920 1560 3040 0818 1940 0264 1340 0105 0775 0027

1600 4180 1780 3240 0924 2070 0297 1430 0118 0826 0031

1700 10rdquo 4440 1990 3450 1040 2190 0331 1520 0132 0878 0035

1800 0590 0012 3650 1160 2320 0369 1610 0147 0930 0039

1900 0622 0014 3850 1280 2450 041 1700 0163 0981 0042

2000 0655 0015 40500 1410 2580 0452 1790 0181 1030 0046

2200 0721 0018 4460 1700 2840 0545 1970 0217 1140 0056

2400 0786 0021 12rdquo 3100 0645 2140 0253 1240 0065

2600 0852 0025 0600 001 3360 0749 2320 0296 1340 0076

2800 0917 0028 0646 0012 14rdquo 3610 0859 2500 0339 1450 0087

3000 0983 0032 0692 0013 0573 0008 3870 0982 268 0387 1550 0099

3500 1150 0043 0810 0018 0668 0011 4520 1330 3130 0526 1810 0134

4000 1310 0055 0923 0023 0764 0014 16rdquo 5160 1720 3570 0673 2070 0172

4500 1470 0068 1040 0029 0860 0018 0658 0009 4020 0853 2320 0214

5000 1640 0084 1150 0034 0955 0022 0731 0011 4470 1040 2580 0262

6000 1960 0118 1380 0049 1150 0031 0877 0016 18rdquo 5360 1470 3100 0373

7000 2290 0158 1610 0065 1340 0042 1020 0021 0808 0012 6250 2000 3610 0499

8000 2620 0204 1840 0085 1530 0054 1170 0027 0924 0015 7150 2590 4130 065

9000 2950 0256 2080 0107 1720 0067 1310 0033 1040 0019 4650 0816

10000 3280 0313 2310 0130 1910 0081 1460 0041 1150 0023 5160 0992

Q V Y V P V Y V Y V Y V Y V Y V Y [lm] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m]

PIPI

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78 wwwpnr-nozzlescom CTG SH 07 EU

10 75 12 038 4 11 50

15 80 12 044 4 11 55

20 90 14 065 4 11 65

25 100 14 082 4 11 75

32 120 14 117 4 14 90

40 130 14 139 4 14 100

50 140 14 162 4 14 110

65 160 14 214 4 14 130

80 190 16 343 4 18 150

100 210 16 422 4 18 170

125 240 18 611 8 18 200

150 265 18 751 8 18 225

175 295 20 1020 8 18 255

200 320 20 1230 8 18 280

250 375 22 1850 12 18 335

300 440 22 2550 12 22 395

350 490 22 3180 12 22 445

400 540 22 3850 16 22 495

450 595 22 4700 16 22 550

500 645 24 6040 20 22 600

PN 6 (UNI 6091)

ND 6 (DIN 2527) DN Flange Holes

D t W N Oslash a

90 14 063 4 14 60

95 14 071 4 14 65

105 16 101 4 14 75

115 16 122 4 14 85

140 16 180 4 18 100

150 16 209 4 18 110

165 18 287 4 18 125

185 18 365 4 18 145

200 20 461 8 18 160

220 20 565 8 18 180

250 22 812 8 18 210

285 22 1050 8 22 240

315 24 1410 8 22 270

340 24 1620 12 22 295

405 28 2510 12 25 355

460 28 3520 12 25 410

520 30 4820 16 25 470

580 32 6350 16 30 525

640 32 7720 20 30 585

715 34 1020 20 33 650

PN 16 (UNI 6093)

ND 16 (DIN 2527) Dimensions Holes

D t W N Oslash a

ND 10 (DIN 2527) Dimensions Holes

D t W N Oslash a

90 14 063 4 14 60

95 14 071 4 14 65

105 16 101 4 14 75

115 16 122 4 14 85

140 16 180 4 18 100

150 16 209 4 18 110

165 18 287 4 18 125

185 18 365 4 18 145

200 20 461 4 18 160

220 20 565 8 18 180

250 22 812 8 18 210

285 22 1050 8 22 240

315 24 1410 8 22 270

340 24 1650 8 22 295

395 26 2410 12 22 350

445 26 3080 12 22 400

505 26 3960 16 22 460

565 26 4960 16 25 515

615 26 5860 20 25 565

670 28 7530 20 25 620

PN 10 (UNI 6092)

LegendaDN Nominal DiameterD Flange External Diametert Flange ThicknessW Flange WeightN Hole NumberOslash Hole Diametera Hole axis

PIPING Flange dimensionsPI

PIN

G

Blind flanges to DIN 2527

79wwwpnr-nozzlescomCTG SH 07 EU

LegendDN Nominal DiameterD Flange External Diametert Flange ThicknessW Flange WeightN Hole NumberOslash Hole Diametera Hole axis

12rsquorsquo 889 111 08 4 159 603

34rsquorsquo 984 127 09 6 159 698

1rsquorsquo 1079 143 10 4 159 794

114rsquorsquo 1175 159 13 4 159 889

112rsquorsquo 1270 175 14 4 159 984

2rsquorsquo 1524 190 18 4 190 1206

212rsquorsquo 1778 222 32 4 190 1397

3rsquorsquo 1905 238 41 4 190 1524

312rsquorsquo 2159 238 59 8 190 1778

4rsquorsquo 2286 238 77 8 190 1905

5rsquorsquo 2540 238 91 8 222 2159

6rsquorsquo 2794 254 118 8 222 2413

8rsquorsquo 3429 286 204 8 222 2984

10rsquorsquo 4064 302 318 12 254 3619

12rsquorsquo 4826 317 500 12 254 4318

14rsquorsquo 5334 349 600 12 286 4762

16rsquorsquo 5969 365 770 16 286 5397

18rsquorsquo 6350 397 950 16 317 5778

20rsquorsquo 6985 429 1230 20 317 6350

22rsquorsquo 7493 460 1510 20 349 6921

ANSI 150 lb DN Flange Holes

D t W N Oslash a

952 143 10 4 159 667

1175 159 14 4 190 825

1238 175 18 4 190 889

1333 206 27 4 190 984

1556 222 36 4 222 1143

1651 254 45 8 190 1270

190S 286 68 8 222 1492

209S 317 91 8 222 1683

2286 349 132 8 254 1841

2540 349 150 8 254 2000

2794 381 200 8 254 2349

3175 413 277 12 254 2699

3810 476 450 12 286 3302

4445 540 700 16 317 3873

5207 571 103 16 349 4508

5842 603 141 20 349 5143

6477 635 181 20 381 5715

7112 667 228 24 381 6286

7747 698 282 24 413 6858

8382 730 311 24 444 7429

ANSI 400 lb Dimensions Holes

D t W N Oslash a

ANSI 300 lb Dimensions Holes

D t W N Oslash a

952 143 10 4 159 667

1175 159 14 4 190 825

1238 175 18 4 190 889

1333 190 27 4 190 984

1556 206 32 4 220 1143

1651 222 36 8 190 1270

1905 254 54 8 222 1492

2095 286 73 8 222 1683

2286 302 95 8 222 1841

2540 317 122 8 222 2000

2794 349 159 8 222 2349

3175 365 227 12 222 2699

3810 413 370 12 254 3302

4445 476 580 16 286 3873

5207 508 840 16 317 4508

5842 540 1070 20 317 5143

6477 571 1390 20 349 5715

7112 603 3900 24 349 6286

7747 635 2230 24 349 6858

8382 667 2700 24 413 7429

PIPING Flange dimensions

PIPI

NG

flanges to ANSI norms

80 wwwpnr-nozzlescom CTG SH 07 EU

PIPI

NG

Sieves are used both for determining the particle size distribution of a granular material and to filter solid particles in a liquid Normally the sieve is made with a fabric whose characteristic dimensions areL is the Opening Width (free passage)D is the Diameter of the wireP is the Pitch of the wireS is the Thickness of the fabricTo classify particle sizes there is some Sieve Series according to specific standardsthe most known are Tyler Sieve Series US Sieve Series UK Sieve SerieshellipThe Tyler mesh size indicates exactly the number of openings per linear inch of mesh

L[microm]

TYLER Sieve[Mesh No]

ASTM E11 Sieve[Mesh No]

BS 410 Sieve[Mesh No]

DIN 4188 Sieve[mm]

5 2500 2500 0005

10 1250 1250 0010

15 800 800 0015

20 625 635 625 0020

22 0022

25 500 500 500 0025

28 0028

32 na 450 440 0032

36 0036

38 400 400 400

40 0040

45 325 325 350 0045

50 0050

53 270 270 300

56 0056

63 250 230 240 0063

71 0071

75 200 200 200

80 0080

90 170 170 170 0090

100 0100

106 150 140 150

112 0112

125 115 120 120 0125

140 0140

150 100 100 100

160 0160

180 80 80 85 0180

200 0200

In the german standard (DIN norm 4188) the Opening Width (L) is given in millimeters

PIPING Sieve size conversion chartPI

PIN

G

81wwwpnr-nozzlescomCTG SH 07 EU

L[microm]

TYLER Sieve[Mesh No]

ASTM E11 Sieve[Mesh No]

BS 410 Sieve[Mesh No]

DIN 4188 Sieve[mm]

212 65 70 72

250 60 60 60 0250

280 0280

300 48 50 52

315 0315

355 42 45 44 0355

400 0400

425 35 40 36

450 0450

500 32 35 30 0500

560 0560

600 28 30 25

630 0630

710 24 25 22 0710

800 0800

850 20 20 18

900 0900

1000 16 18 16 1000

1120 1120

1180 14 16 14

1250 1250

1400 12 14 12 1400

1600 1600

1700 10 12 10

1800 1800

2000 9 10 8 2000

2240 2240

2360 8 8 7

2500 2500

2800 7 7 6 2800

3150 3150

3350 6 6 5

3550 3550

4000 5 5 4 4000

4500 4500

4750 4 4 35

5000 5000

5600 35 35 3

6700 3 0265 in 1

8000 25 516 in na

Applicable standards areISO 565 (1987) ISO 3310 (1999) ASTM E 11-70 (1995)DIN 4188 (1977) BS 410 (1986) AFNOR NFX11-501 (1987)

Legend Q Water Flow Rate V Velocity P Pressure drop Pressure drop in bar per 100 meters of straight pipe (water at ambient temperature)

PIPING Sieve size conversion chart

PIPI

NG

Besides its main range of nozzles for industrial applications PNR manufactures a wide range of complementary products and systems to optimize the use of spray jets and fluids control in most of the modern industrial processes

PNR PRODUCT RANGE

CTG AC

CTG LS

CTG UG

CTG AZ

Complementary Products andAssembly FittingsA complete line of nipples clamps swivel joints and everything that helps you to assemble align and service your spraying systems quickly and easilyAir blowers mixing eductors filters clean-ing guns and lances hose reels steam heaters pressure tanks quick couplings to help you build up a professional system upgraded to the latest standards

Tank washing systemsA complete range from simple fixed washing heads to the two-axis heads from mushroom nozzles to fluid driven reaction heads up to the motor driven washing heads equipped with a pneu-matic or electric motorAll for the inside cleaning of industrial tanks according to the latest technology accessories included

Spray nozzles for industrial applicationsOne of the world most complete lines of nozzles for numberless industrial appli-cations Nozzles with a wide openings range various types of vanes several spray patterns anti-clog design available in small and big dimensions and made in many food-grade materials like PFTE and Stainless Steel 316L with threaded and flanged connections

Air assisted atomizersUltrasonic classic and automatic atomiz-ers for the finest atomization in any insus-trial process High quality machining and strict quality control ensure your systems top professional resultsProgramming and control panels for an easy assembly of complete humidification systems

CTG SP

CTG PM

CTG SW

CTG LN

Spraydry nozzlesAir assisted or hydraulic high pressure ato-mizers made in high-quality metal alloys or tungsten carbideA complete line of nozzles for the moder-nization of existing facilities at competitive prices To ensure highly accurate results and a long service life these nozzles are manufactured with the finest materials and technologically advanced machines

Paper mill productsA line of products specifically designed for perfect results on paper mill machines including disc nozzles patented for self-cleaning filters flat jet nozzles with orifices in sapphire ruby and ceramic oscillating tubes equipped with a computer driven motor

Steelwork nozzlesA complete line of nozzles for steelwork applications including continuous casting air atomizers and conventional nozzles descaling nozzles for high pressure sys-tems dovetail tips for cylinders cooling and high capacity flanged nozzles for coke quenching

Gas cooling lancesSpillback or air assited lances for gas coo-ling in steelworks cement plants and other industrial applicationsWe can supply spare parts upgrade your plant and even supply a complete PLC driven system to enhance the towers per-formances to the highest efficiency level allowed by today technology

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CTG SH 07 EUwwwpnr-nozzlescom

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Our products are distributed through

We are also represented in

PNR AmericaPNR Asia

PNR BalticPNR Benelux

PNR ChinaPNR Czech Republic

PNR DeutschlandPNR France

PNR ItaliaPNR Mexico

PNR UK

ArgentinaAustraliaAustriaBrazil

BulgariaCanada

ChileCroatia

DenmarkFinlandGreece

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IranIrelandKorea

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SwedenTaiwanTurkey

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Page 10: SPRAY CTG SH 07 EU ENGINEERING HANDBOOK

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TECHNIQUES FOR SPRAY PRODUCTION

Many different techniques can be used to produce a spray and most of them are used today for nozzles to be applied in industrial processes Based on the different techniques the following nozzle types can be used in industrial applications to generate a liquid spray

1 Pressure nozzlesThis is the simplest type of nozzles where an orifice is opened into a chamber where the liquid to be sprayed is fed under pressure A spray is produced through the orifice with spray pattern flow rate and spray angle depending upon the orifice edge profile and the design of the inside pressure chamberTypical pressure nozzles are the flat jet nozzles series GA J GX and GY

2 Turbulence nozzlesIn these nozzles the liquid moving towards the chamber preceding the orifice is given a rotational speed component so as to open up in a conical shape as soon as it leaves the orifice edge because of centrifugal force Based on the nozzle design and the technique used to generate the rotational speed the drops produced can be confined to the cone outer surface (hollow cone spray) or be evenly distributed to fill the entire volume of the cone (full cone spray)

3 Impact nozzlesHere the desired spray shape is obtained producing an impact of the liquid jet onto a properly designed surface The liquid jet is subsequently changed into a fluid lamina and then broken into drops with the desired spray pattern after leaving the nozzle edge

4 Air assisted atomizersFine and very fine sprays can be obtained by means of air assisted atomizers working upon various different principles More detailed information about air assisted atomizing can be found in our Catalogue Air assisted atomizers (ordering code CTG AZ18)

LIQUID SPRAY AND SPRAY NOZZLES Liquid spray

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FULL CONE PATTERN

In a full cone spray the droplets are distributed into a volume which is limited by a cone having its origin point at the nozzle orifice Such spray pattern is commonly used in a large variety of industrial processes since it is the one which allows to distribute in an even way the water flow onto a surface the full cone spray pattern is therefore useful as a typical example to evenly spray cooling liquid on a still surface Another typical use is to distribute liquid droplets within a certain volume like for example evenly distributing water droplets in the inside volume of a cooling tower

Because of the wide number of processes performed by means of full cone nozzles the original shape has evolved into a range of specialised types where the full cone spray pattern or a pattern similar to a full cone one is obtained by different techniques

Standard full cone (turbulence nozzle)These nozzles use a specially shaped vane placed at the nozzle inlet to give a rotational speed to the fluid flowing through the nozzleBecause of the rotational speed of the fluid water exiting the nozzle orifice is subjected to centrifu-gal force and opens up in the shape of a full coneThe extent of the angle of the cone is a function of both exit speed (created from the inlet pressure) and the internal design of the nozzle It can vary in practice from 15deg to 120deg

These nozzles can be also produced as square full cone nozzles where the square shape of the pyramidal spray is obtained by a special design of the outlet orificeTwo important details have to be noted from the system designer when using these type of noz-zles

the spray angle is measured on the side of the square sectionbullthe square section of the spray rotates within the distance from the nozzle orifice to the bulltarget area

Spiral full cone (deflection nozzle)This is not properly a full cone but rather a continuous liquid curtain evolving with the shape of a spiral inside a conical volume The disadvantage of a scarcely even distribution is compensated by an exceptionally good resistance to plugging which makes this nozzle the best choice in those applications where safety or system reliability are the prime concern eg fire fighting systems

Multiple full cone (turbulence nozzle air atomizer)This spray pattern is used in two cases that is

1 When a wide spray angle is to be reached with nozzles which inherently can only produce a narrow one or in such cases where small size droplets and rather high capacities are required Therefore several nozzles are grouped in a cluster with different spray directions the resulting spray pattern occurs from the additional group of single nozzle sprays and the droplet size of the spray remains the same as one of single nozzle It must be noted that a smaller nozzle will normally make smaller drops as compared to a larger size nozzle of the same type operating under the same conditions

2 When it is necessary to obtain a wide angle jet using nozzles which inherently deliver a lim-ited angle spray In the case of a wide angle air atomizer for example the droplet distribution is obviously not homogeneous and the result is rather a number of small angle sprays with different directions but still the liquid is atomized towards all the parts of the volume to be treated

LIQUID SPRAY AND SPRAY NOZZLES Spray nozzle types

Standard full cone

Spiral full cone

Multiple full cone

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FLAT JET SPRAY PATTERN

In a flat jet spray the liquid droplets are sprayed in the shape of a flat liquid layer with different thickness according to the principle used to generate the spray A flat jet spray nozzle serves the purpose of spraying onto a surface or an object moving in a transverse direction with respect to the one of the jet surface a typical example being the nozzles in a car washing tunnel The vast majority of flat spray nozzles used in the industry work according to one of the following principles

In line flat jet (pressure nozzle)This is the general purpose flat jet nozzle where the liquid enters the nozzle in line with the axis length and is fed to a pressure chamber from where it is ejected through the nozzle orifice Flow value and spray angle are determined respectively from the orifice cross section and the orifice edge profile

In line straight jet (pressure nozzle)These nozzles can be considered a special kind of flat jet nozzle with naught degree spray angle They are designed to produce a sharp stable stream with powerful impact on a given point and serve normally to perform cleaning processes or to cut soft materials

Spoon flat jet (deflection nozzle)In this type of nozzle the liquid is fed under pressure to a round outlet orifice and then deflected onto a smooth profiled surface so as to assume a flat jet shape This sophisticated design is of advantage since it offers a stronger jet impact using the same feed pressureHigher efficiency comes from the very little energy required to just change the direction of the liquid flow this being the only energy required to generate the flat jet

HOLLOW CONE SPRAY PATTERN

A hollow cone spray pattern consists of droplets concentrated onto the outer surface of a conical shape volume with no droplets contained in the inside of the conical jet shape These nozzles are normally used for smoke washing or gas cooling applications in several industrial processes

Hollow cone (turbulence nozzle)These nozzles use a tangential injection of liquid into a whirling chamber to generate centrifugal forces which break up the liquid vein as soon as it leaves the orifice Precisely designed orifice profiles making use of the Coanda effect provides the ability to obtain very large spray angles

Hollow cone (deflection nozzle)A hollow cone can also be obtained taking a liquid flow to change direction onto a properly designed surface in order to break the liquid into droplets and distributing them as a hollow cone spray patternThis kind of nozzle is mainly used for applications in dust control and fire fighting systems

LIQUID SPRAY AND SPRAY NOZZLES Spray nozzle typesLI

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PNR CODING SYSTEM

As any other industrial product spray nozzles need to be precisely identified by means of a code in order to avoid mistakesPNR coding system has been designed with the following requirements in mind

Codes must be easily processed by a computer in ascending orderbullCodes must describe completely the product without any need for additional descriptionbullCodes must show to the user the basic specifications of the nozzle in order to ease the search in the cataloguebull

We have therefore determined our coding system described as follows

LIQUID SPRAY AND SPRAY NOZZLES Spray nozzle coding

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AA U X YB312 305

Thread type or other connection

Special features

Nozzle material code (see below)

The three digits give the nozzle capacity in lpm at 3 bar according to rank value

Rank of flow value see table below

Nozzle spray angle see table below

Nozzle type as described in the catalogue pages shown in ascending order

Nozzle tables report on a blue background the nominal flow value measured at 30 barFlow values at different pressures have been calculated

These codes serve as an indication onlyBased on different types of nozzles their significance can occasionally be different

CAPACITY RANK

Rank Flow digits Actual flow (lmin)

0 0 490 049

1 1 490 490

2 2 490 490

3 3 490 490

4 4 490 4900

SOME SPRAY ANGLE CODES (DEGREES)

A = 0 L = 40 T = 80

B = 15 M = 45 U = 90

C = 20 N = 50 J = 110

D = 25 Q = 60 W = 120

F = 30 R = 65 Y = 130

H = 35 S = 75 Z = 180

A1 Carbon steel D6 Glassfibre reinforced PP L2 Incolloy 825

A2 High speed steel D7 High density polyethilene L8 Hastelloy C276

A8 Zinc coated steel D8 Polyvinylidenefluoride (PVDF) P6 Acr But Styrene (ABS)

A9 Nickel coated steel E0 EPDM P8 EPDM 40 Shore

B1 AISI 303 Stainless steel E1 Polytetrafluorethylene (PTFE) T1 Brass

B2 AISI 304 Stainless steel E2 PTFE (25 glassfibers) T2 Brass chrome plated

B21 AISI 304 L Stainless steel E31 Acetalic resin (POM) T3 Copper

B3 AISI 316 Stainless steel E7 Viton T5 Bronze

B31 AISI 316 L Stainless steel E8 Synthetic rubber (NBR) T8 Brass nickel plated

C2 AISI 416 Stainless steel hardened F5 Ceramic T81 Brass electroless nickel plated

D1 Polyvinylchloride (PVC) F31 Ruby insert 303 body V1 Aluminum

D2 Polypropylene (PP) G1 Cast iron V7 Aluminum electroless n plated

d3 Polyamide (PA) H1 Titanium

D5 Talcum filled Polypropylene L1 Monel 400

NOZZLE MATERIAL CODES

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LIQUID SPRAY AND SPRAY NOZZLES Computerized fluid dynamics

The customers demand for an always higher efficiency requires to use not only the best tooling but in addition control instruments and design methods always more sophisticated like for example new software for obtaining the velocity distribution of a fluid flowing through a conduit

These software programs require that the geometry of the inner con-duit to be geometrically defined and in addition the process conditions ( pressure temperature fluid capacity ) and the fluid properties ( specific weight viscosity ) to be Introduced

Based on the above data it is pos-sible to obtain a very precise dis-tribution for the velocity value in each single point of the conduit both under numeric form and flow diagramsThese Information make it possi-ble as an example to minimize the flow turbulence and consequently to Increase the nozzle efficiency through an increase in the fluid exit velocityThis is of basic Importance for some kind of nozzles for example those nozzles required to supply an high impact jet when performing descal-ing processes in a rolling millBy trial and error it is also possible to eliminate problems like jet Instability or cavitation

The overall process efficiency in the flow path before the nozzle can also be considered which often results into the design of geometry modifi-cation or the Introduction of special flow improving profiles along the conduit

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The diagram on the right shows the idealization of the process generating the droplets while the water jet exiting the nozzle is breaking up The theoretical model whose exactitude seems to be confirmed by scientific research considers that the liquid flowing through the nozzle and past the orifice edge evolves into a liquid lamina This lamina because of instability induced by aerodynamic forces breaks up first into elongated ligaments more or less cylindrical and later into droplets

Taking the above process as a guideline one can easily appreciate that the average droplet diameter is some what related to several factors like

1 The thickness of the lamina itself2 The evenness of the lamina 3 A steady flow and break up process

For what has been said above and limited to hydraulic nozzles the system designer looking for fine droplet sprays should consider that the following results can be expected

Impact nozzles best

Centrifugal hollow cone nozzles multiple full cone nozzles good

Turbulence nozzles fair

Centrifugal Vaneless full cones worst

The above choice is obviously based on the droplet generation process which changes from one nozzle type to another and allows to forecast which type is best fro the applicationAn additional consideration of interest is that the expected droplet size changes for the same type of nozzle with the nozzle size it is possible to generate smaller drops spraying the same water quantity at the same pressure using a greater number of smaller nozzles

In cases where energy requirements are not a problem or where a specified small droplet diameter is required the smal-lest droplets can be obtained by means of an air assisted atomizerHere the shear action of a high speed compressed air flow is used with several different techniques to obtain a value for SMD (Sauter Mean Diameter) of 50 microns and less

LIQUID SPRAY AND SPRAY NOZZLES Spray generation

Theoretical Mechanism of droplet generation

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SLIQUID SPRAY AND SPRAY NOZZLES Droplet spectrum

The atomization of a liquid by means of a compressible fluid like air steam or a gas is defined pneumatic two-phase or twin-fluid atomization Many industrial processes require the availability of finely atomized droplets and the techniques to produce atomized jets have been largely improved in the recent years In addition more sophisticated process techniques have incre-ased the demand for a precise definition about the characteristics of the spray and are now available to the design engineer Since many years PNR can supply upon request complete documentation containing test reports about the more interesting and additional information which are described below for all PNR products

Laser Interpherometer Test (By Pdpa)

PNR droplet size test reports are performed by means of a Laser Interpherometer (Phase Doppler Particle Analyzer) where two laser beams cross in a given point of the spray and define a test probe area Droplet flying through the probe area cause a light scatter which is picked up by the instrument receiver and processed through a computer in order to obtain relevant information about the spray characteristics

Report information

Report information is made of data printed on three pages where the first page contains the most interesting data which make possible to base process calculations upon precise data about spraying degrees process efficiency and jet behavior in operational ambiance These pages contain the Sauter Mean Diameter value whose knowledge is of special importance in heat exchange calculations about evaporative gas cooling processes since it gives the possibility of evaluating the exchange surface obtained by atomizing for a given liquid volume

The upper picture at page 18 referring to atomizing water by means compressed air shows two following histograms

bull Distribution curve of droplet diameter (micron)

bull Distribution curve of droplet velocities (mps)

and the below described values

bull Arithmetic Mean Diameter (D10)

bull Surface Mean Diameter (D20)

bull Volume Mean Diameter (D30)

bull Sauter Mean Diameter (D32)

ARITHMETIC MEAN DIAMETERThis is a diameter value which multiplied by the local num-ber of droplets in the sample equals the addition of alI droplets diameters

SURFACE MEAN DIAMETERThis is the diameter of such a droplet whose surface mul-tiplied by the total droplets number equals the sum of alI droplets surfaces

VOLUME MEAN DIAMETERThis is the diameter of such a droplet whose volume mul-tiplied by the total droplets number equals the sum of all droplets volumes

SAUTER MEAN DIAMETERThis is the diameter of such a droplet whose volumearea ratio equals the ratio between the sum of alI droplet volu-mes divided by the sum of alI droplet surfaces

D10 = Σ i ni di

Σ i ni

D20 = Σ i ni di

2

Σ i ni

D30 = Σ i ni di

3

Σ i ni

D32 = Σ i ni di

3

Σ i di

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3

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AttemptsDroplet number crossing probe area during test time This includes both validated and not validated droplet

Correct Count Criteria A mathematic correction is applied to validate droplets which cross Probe Area in a peripheral belt or to droplets without a perfect spherical shape so that alI validated droplets parameters are homogeneous (This correction is necessary so that there is direct proportionally between laser beam phase and droplet number diameter)

Number Density It is the number of droplets passing through probe area within test time

Probe areaThis is the area where the two laser beams are crossing so determining the probe area AlI droplets intersecting probe area are checked droplets which respect given parameters for shape are taken as valid droplets and make up the sample whose size and velocity parameters are reported

ValidationsDroplets accepted based on given shape parameters to make up for test sample

Velocity MeanDroplets distribution speed histogram (ms)

Volume Flow RateIt is the volume measured in cubic centimeter per second of the validated droplets making up for the sample

Volume FluxIt is the flow rate per specific area measured in cubic centimeter per second and square centimeter of the validated droplets making up the sample

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LIQUID SPRAY AND SPRAY NOZZLES Droplet spectrum

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SLIQUID SPRAY AND SPRAY NOZZLES Droplet spectrum

PNR can supply upon request complete documentation con-taining test reports about the aforementioned parameters and additional information for all PNR atomizersThe diagrams beside show the distribution of droplet diameters and droplet velocities of a spray under test as available to our customers

In the photo beside a test being performed at our laboratoriesWe use a computer driven laser interpherometer to detect and record the spray parameters while fluid capacities and feed pressure values are monitored through high precision instru-ments

IMPORTANT NOTE

The droplet size values measured with a PDPA instrumentation are representative of a well specified volume inside the spray and taking measurements in a different volume they can be considerably differentA correct spray droplet size characterization requires then not only tests being performed in several volumes within the spray but also that those measure volumes are selected with regard to the process the droplets are expected to performAs an example the droplet characterization of a spray should define how many volumes have been tested and which are the coordinates of each single test volume in relation to the nozzle orifice

Most of the times pretending to describe the droplet spectrum of a spray nozzle at a given pressure with only one diagram is therefore not correct

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In order to calculate the discharge flow rate from a given nozzle the Bernoulli law shall be used which says that the energy of a liquid flow remains unchanged over alI the sections of the flow Friction and turbu-lence losses are neglected which is reasonable for our purposes if the cal-culation is performed over two sections not too far away from each other

The Bernoulli law can be written as follows

Therefore if we consider two sections of the same pipe section A and section B we can write that the flow energy remains constant in the form

If we finally consider that the two above sections are taken immediately before and immediately after the nozzle outlet orifice being

ZA = ZB PB = 0 (PA is a differential pressure referred at the atmosphere pressure)

VA cong 0 negligible as compared to VB (for orifice diameter much smaller than the duct diameter)

we shall come to the formula

When we define a new constant k to include the value of the nozzle orifice outlet area (A) then we come to the following equation which says that for a nozzle spraying into a room at ambient pressure the exiting flow is proportional to the feed line pressure

Considering now two different pressure values for the same nozzle since k is a constant quantity we can write that

and derive from the above an equation that makes it possible to calculate the nozzle flow value at any given pressure value once the flow value at another pressure value is known

The energy of a given liquid flow crossing a given pipe section is composed of three parts namely

P Pressure energy of liquid particle per volume unit

1 ρV2 Kinetic energy of liquid particle per volume unit2ρgz Potential Energy of liquid particle per volume unit

Where ρ = density of liquid g = gravitational acceleration

z = height respect to one plane of reference V = liquid velocity

PA = 1 ρVB 2 rArr

2

K = Q rArr

PK =

Q1 = Q2 rArr

P1 P2

Q = A V rArr

Q = A x C x P rArr

1 P + 1 ρV2 + ρgz = E

2

VB = 2 PA rArr ρ

Q1 = P1

Q2 P2

3 V = C P

4 Q = K P

2 PA + 1 ρVA 2 + ρgzA = PB + 1 ρVB

2 + ρgzB 2 2

EXIT VELOCITY DEPENDS UPON PRESSURE

NOZZLE CAPACITY DEPENDS UPON PRESSURE

NOZZLE CAPACITYAT A DIFFERENT PRESSURE

5 Q2 = Q1 P2

P1

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LIQUID SPRAY AND SPRAY NOZZLES Nozzle flow rate

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SLIQUID SPRAY AND SPRAY NOZZLES Nozzle flow rate

The Equation (5) has been obtained after having simplified the real problem neglecting several factors like for examplebullInmostofthepracticalapplicationcasestheflowisturbulentandnotlaminarbullFrictionlossestendtostronglyincreasewithliquidvelocitybullDependinguponthetypeofnozzleadifferentpercentageoftheavailableenergyisusedtobreakupthejetandgivethe

desired spray pattern and spray angle

For the above reason equation (5) gives reliable results if used in a limited pressure range around the pressure value where the flow rate is known with this pressure range depending upon the type of nozzleOur experience has shown that one can expect the error in the calculated value to be lower than +- 6 for pressure values ranging from 13 to 3 times the reference value

As an example a nozzle rated for 10 lpm at 3 bars would have according to equation (5) the following flow valuesa 1 bar 577 lpma 9 bar 173 lpmin real conditions it can be expected the flow rate values to beas high as 61 lpm a 1 baras low as 162 lpm a 9 barAbove considerations are to be used as a guideline only because of the many factors influencing real operations which have not been considered here for example liquid temperature viscosity and density

Possible percentage deviation from theoretical flow rate values

Also above mentioned percentage errors have to be understood for nozzles using part of the flow energy to produce wide angle spray patternsLower values can be expected for narrow angle nozzles impact nozzles and straight jet nozzles Laboratory tests and diagrams showing real flow rate values for each nozzles are used in practice when a precise result must be available

Nozzle discharge coefficient

With reference to equation (4) if we consider the pressure value to be equal to 1 (P = 1 bar) the flow rate of the nozzle becomes

K is a parameter widely used in the fire fighting industry

In some instances reference is made to the nozzle discharge coefficient or shortly to the nozzle coefficient to indicate the nozzle flow rate for a unitary pressure Of course for a given pressure value Pn the flow value will be

+ 6

+ 3

- 3

- 6

CAPACITY AT A GIVEN PRESSURE VALUEWHEN K KHOWN

NOZZLE CAPACITYFOR P=1 barQ = K P = K 1 = K

6 Qn = K Pn

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The spray angle is the opening angle which the nozzle jet of droplets forms at the moment when it leaves the nozzle orifice and it is one of the fundamental parameters for the choice of a given nozzleIn fact the amplitude of the spray angle determines in connection with the distance between the nozzle orifice and the target to be covered the spray coverage and the density of liquid sprayed with respect to the cover area See our Catalogue for description of the different nozzle spray patterns The table at the bottom of the page gives the theoretical spray width based on the nozzle spray angle and the distance from the nozzle orifice It is important to note that because of several factors like gravity forces and aerodynamic drag the spray angle value cannot be maintained but in in a limited distance normally up to 300 mm from the orifice For air assisted atomizers it is improper to use the term spray angle since no precise value can be measured Therefore the values given by Catalogues are to be intended as guidelines only

THEORETICAL SPRAY COVERAGE

at various distances from nozzle orifice

Spray 50 100 150 200 250 300 400 500 600 700 800 1000 Angle mm mm mm mm mm mm mm mm mm mm mm mm

15deg 13 26 40 53 66 79 105 132 158 184 211 263 25deg 22 44 67 89 111 133 177 222 266 310 355 443 30deg 27 54 80 107 134 161 214 268 322 375 429 536 35deg 32 63 95 126 158 189 252 315 378 441 505 631 40deg 36 73 109 146 182 218 291 364 437 510 582 728 45deg 41 83 124 166 207 249 331 414 497 580 663 828 50deg 47 93 140 187 233 280 373 466 560 653 746 933 60deg 58 116 173 231 289 346 462 577 693 808 924 1150 65deg 64 127 191 255 319 382 510 637 765 892 1020 1270 70deg 70 140 210 280 350 420 560 700 840 980 1120 1400 75deg 77 154 230 307 384 460 614 767 921 1070 1230 1530 80deg 84 168 252 336 420 504 671 839 1010 1180 1340 1680 90deg 100 200 300 400 500 600 800 1000 1200 1400 1600 2000 95deg 109 218 327 437 546 655 873 1090 1310 1530 1750 2180 100deg 119 238 358 477 596 715 953 1190 1430 1670 1910 2380 110deg 143 286 429 571 714 857 1140 1430 1710 2000 2290 2856 120deg 173 346 520 693 866 1040 1390 1730 2080 2430 2771 3464 130deg 215 429 643 858 1070 1290 1720 2150 2570 3002 3431 4289

WhereASCbull = Actual Spray CoverageTSCbull = Theoretical Spray CoverageASAbull = Actual Spray AngleTSAbull = Theoretical Spray AngleL bull = Spray Distances

TSC = 2 middot L middot ctan ( TSA )2

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SLIQUID SPRAY AND SPRAY NOZZLES Spray angle

Depending upon the nozzle design variations of feed pressure may have a great influence on the spray angle valueGenerally with increasing pressure turbulence full cone nozzles will produce narrower angles flat jet nozzles will show a wider angle spray while nozzles working on the deflection principle like spiral nozzles and K style flat jet nozzles will be less affected by pressure changesAll nozzles will not function properly with very low pressure values (from 05 bar down depending upon nozzle type ) with a marked decay in performance larger drops not well defined spray pattern lower spray angle values

The above pictures show spray angles for different nozzles and different pressure valuesShould your application strictly require that a given value of the spray angle is obtained under a given pressure value or pressure range of values please obtain a test report from our laboratories

Full cone nozze DDW 2235

Flat jet nozzleJCW 2245

Spiral nozzeECW 2230

Pressure 05 bar Pressure 05 bar Pressure 05 bar

Pressure 3 bar Pressure 3 bar Pressure 3 bar

Pressure 10 bar Pressure 10 bar Pressure 10 bar

Photo obtained with 120000s flashlight

picture 1

picture 4

picture 7

picture 2

picture 5

picture 8

picture 3

picture 6

picture 9

NotePicture 2 shows clearly the droplet generation mechanism as described at page 15

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Terms and definitions

A very important characteristic of a spray nozzle is a parameter called Spray Distribution which gives a precise information about how evenly the drops of the spray are distributed onto the area covered by the sprayIt is self understood that normally it is preferable to obtain the most even distribution possibleIn the past this was done through the visual examination of a diagram reporting the quantity of water contained for example in glass pipes aligned onto the spray coverage areaPnr has determined to obtain such a result in a scientific way through high technology instrumentation as shown in the pictures below showing one of our patternators and a typical distribution diagram

Now to the spray geometry and some definition letrsquos consider a nozzle with a capa-city Q at the pressure PAt every value for distance H which we call height of spray we can define a plane lsquonrsquo normal to the nozzle axis on which a line can define the intersection of the spray onto the planeThe area covered by the spray on the plane lsquonrsquo has a surface S depending from the following parametersa) Spray pattern Fb) Opening angle of the spray αc) Height of the spray H

We can then write S=S( F α H )

In case of a full cone nozzle S is a circle with diameter C and S = 0785 C2

The capacity of the nozzle flows through the surface S but each smaller area inside the surface S will probably have a different value for the flow passing through itWe introduce then the value of Specific Capacity q

1) Specific Capacity

The function q depends upon the single point (xy) in the section S and then

Determining the function q is however very expensive therefore in practice two different functions are used which give in most occurrences sufficient information

2) Linear Distribution

3) Angular distribution

part Qpart x

qx =

Diagram 1

q = limΔS 0

ΔQΔS

q = = f (x y H)part Qpart S

part Qpart φ

qφ =

ΔQ is the liquid flowing through a surface ΔSwhere ΔS is a fraction of the surface S

x and y are the local coordinates in the section planewhere H is the distance of the test surface from the nozzle orifice

partQ is the variation in capacitywhere partx is the variation of a generic linear coordinate

partQ is the variation in capacitywhere partφ is the variation of a generic angular coordinate

LIQU

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LIQUID SPRAY AND SPRAY NOZZLES Spray Distribution

24 wwwpnr-nozzlescom CTG SH 07 EU

LIQUID SPRAY AND SPRAY NOZZLES Spray Distribution

Values extracted from these functions can characterize the spray and allow for drawing the diagrams defined as Distribution Curves

Analyzing the above curves it is possible to determine the type of water distribution along the spray coverage and the type of spray pattern like for example a full cone hollow cone flat or straight jet spray

Distribution measurement

The water distribution along the spray coverage is determined by means of an instrument called Patternator

A patternator consists of the following parts 1) Liquid collector2) Cell block3) Measure block4) Unloading block

The nozzle is above the instrument and it is orienta-ted in such a way the jet is collected into the upper liquid collectorThe liquid collector can be linear ( diagram 5 ) or round ( diagram 6 ) according to the test being runFrom the single parts in the collector the liquid is sent into the corresponding cells below (2)

The Measure block (3) determines the liquid content in each single cell then the unloading block (4) empties the instrument sending the liquid to the collection drain

There are two types of patternators

Analogic1 the different levels of liquid is visible through the transparent walls of the cells or pipes sometimes containing some kind of floating balls and a picture can be taken with a cameraDigital2 Delivering an automatic reading of the values in the cells the values being supplied as an electronic file from which a distribution curve can be easily obtained

Diagram 2 Linear distribution Diagram 3 Angular distribution

Diagram 4

Diagram 6 Circular collectorDiagram 5 Linear collector

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LIQUID SPRAY AND SPRAY NOZZLES Spray Distribution

Normalizing distribution curve

The values obtained from the cells of the patternator showing the water quantity collected in the single cells allow for preparing a Distribution curve which can be given as a single line curve or as a row of vertical barsThese resemble the liquid level collected into the glass pipes of the old type instrumentation

The curves prepared based on the liquid level in the single cells still are not precise they depend in fact from the testing time the longer this time the larger the liquid quantity sprayedTo eliminate the influence of time from the test it is necessary to transform the effective curves to normalized curves

Normalized4) linear distribution

Normalized5) angular distribution

Please note that Maximum value is the one belonging to the series of values measured in the cellsIn addition to the distribution it is possible to normalize the intervals to with the following formulas

Normalized 6) linear interval

Normalized 7) angular interval

The linear normalized amplitude is defined inside an interval [-1 +1]The angular normalized amplitude is defined inside an interval [0+2π]

Diagram 7 Effective linear distribution curve Diagram 8 Effective angular distribution curve

Mx

xx q

q=δ

N

πθ

2=Δ

Diagram 9 Normalized linear distribution curve Diagram 10 Normalized angular distribution curve

qx is the linear distribution of a generic cellwhere qx

M is the maximum linear distribution measured

qφ is the linear distribution of a generic cellwhere qφ

M is the maximum linear distribution measured

2 is the normalized linear amplitude of the spraywhere N is the number of active cells (active cells = cells containing liquid)

2π is the normalized angular amplitude of the spraywhere N is the number of active cells (active cells = cells containing liquid)

Mq

q

ϕ

ϕϕδ =φ

φ

φ

2

N=Δλ

2

N=Δλ

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Evaluation of spray distribution

To evaluate distribution curves it is necessary to take three properties into consideration

a) UNIFORMITY b) MONOTONY c) SIMMETRY

As described in the following diagrams and definitions

a) UNIFORM A distribution that minimizes the ratio AAdeg

b) MONOTONE Is a distribution with a curve which grows on the left side and decreases on the left side c) SYMMETRIC Is a distribution which minimizes the Ratio A+A-

Based on the above definitions the following curves show the ideal situations

The three properties are then evaluated by means of the following parameters

1 Integral uniformity

2 Incremental uniformity

3 Symmetry index

Complete details about the above formulas and definition can be found in our Technical Bulletin REL 080002 which shall be released from our Technical Department on request

Diagram 12Normalized and monotone distribution

Diagram 11Normalized and monotone distribution

Diagram 14Ideal monotony

Diagram 15Ideal symmetry

Diagram 13Ideal uniformity

1001 sdot=MA

AU

1002

2 sdot=lowastσ

U

1001

sdot⎥⎦

⎤⎢⎣

sdotminus=

lowast

lowast

δ

ε

NI S

sum minus=lowast

M

i iδδε

A is the area included in the normalized curvewhere Adeg is the rest of the area included in the 2x1 rectangle

Left side is the area -1 0where Right side is the area 0 +1

A+ is the area included below the curve on the right sidewhere A- is the area included below the curve on the left side

where

where δrsquo is the value of normalized liquid content in the symmetric cell N number of cells containing liquid in half of the diagram

lowast

lowast sum=

N

N

i i

δ

δ N Number of cells containing liquid

A area included below the curve AM area included below the ideal curvewhere

sum minus= +lowast

1

N

i ii δδσ

N Number of cells containing liquid

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SLIQUID SPRAY AND SPRAY NOZZLES Spray Distribution

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Liquids are characterized for their property of undergoing continuous deformation when subjected to shear stress The property of fluids (liquids or gases) to resist flowing due to the existence of internal friction within the fluid is called visco-sity

Thus if we imagine the different layers of fluid sliding one over the other with friction we can imagine that viscosity is defined the force required to move a unit area of fluid for a unit distance Viscosity is measured with many different systems among which the most used are the following

The following table shows correspondences between the most used viscosity units

The viscosity value of a liquid depends upon the temperature therefore the viscosity value must always be given with reference to a temperature value The viscosity of water (20deg C) is 1 Centipoise and 1 Centistoke since water mass density = 1

KINEMATIC SAYBOLT SAYBOLT ENGLER VISCOSITY UNIVERSAL FUROL

Centistoke Sq feetsec SSU SSF Degrees

100 000001076 310 --- 100

500 000005382 424 --- 137

1000 00001076 588 --- 183

1566 00001686 80 --- 245

2052 00002209 100 --- 302

2515 00002707 120 --- 357

4295 00004623 200 --- 592

1080 0001163 500 523 1460

1510 0001625 700 720 2044

1942 0002090 900 921 2628

3023 0003254 1400 143 4090

3885 0004182 1800 183 5260

5394 0005806 2500 254 7300

10788 001161 5000 509 146

15103 001626 7000 712 204

19419 002092 9000 916 263

32365 003483 15000 1526 438

METHOD UNIT DIMENSIONS NOTES

1 Dynamic viscosity(Absolute viscosity) Poise ML T-1 Poise = 100 Centipoises = (1 dyne per seccm2)

2 Kinematic viscosity Stoke L2 T-1 1 Stoke = 100 Centistoke = (cm2sec)Kinematic viscosity = Dynamic viscositydensity

3 SSUSSF

One of the most widely instruments to determine is the Saybolt viscosimeter which measures the time in seconds required for a fixed volume of a given liquid to flow through an orificeSSU = Seconds Saybolt Universal relates to a smaller orifice for less viscous liquidsSSF = Seconds Saybolt Furol relates to a larger orifice for more viscous liquids

LIQUID SPRAY AND SPRAY NOZZLES Influence of liquid viscosity

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Viscosity influence on nozzle flow rate

AlI nozzle Catalogue data refer to spraying water (water cinematic viscosity is equal to 1 Centistoke)A liquid with viscosity higher than water will require more energy to be pumped and sprayed and will flow with lower velocity at the same pressure and this will cause a reduction in the turbulence of the flow For the above reason nozzles working on the turbulence principle like normal full cone nozzles and whirl hollow cone nozzles will show an increase in capacity while spraying liquids with viscosity higher than water This increase is very consistent for small size nozzles where the small radius of the whirl chamber tends to cause high turbu-lence in the flow and tends to diminish and to disappear for nominal capacity valves (capacity values at 3 bar) larger than 15 liters per minute

The graph below shows for a liquid with a viscosity of about 4 Centistokes typical variations in the nozzle flow rate value for different values of the nozzle whirl chamber diameter As it may be seen these variations can be neglected in most practical applications where nozzles with whirl chamber diameters well over 3 mm are used

For other types of nozzles not working on the turbulence principle the increase on viscosity will simply reduce the liquid exit velocity at the orifice thus causing a decrease in capacity Experience shows that this decrease ranges between 3 and 6 of nominal water capacity that is to say that the variation introduced is in the same order of magnitude as the nozzle flow rate toler-ance

Viscosity influence on nozzle spray angle and spray pattern

With reference to the theory of jet break-up and droplet information it can be easily imagined that spraying a liquid more viscous than water is a difficult task

Al the properties of the spray tend to worsen therefore one can expectA higher value for the minimum operating pressure that is the pressure value which allows for obtaining a well defined 1 spray with the expected spray angle A worse spray distribution since the viscous behavior of the liquid makes it more difficult to pro-duce fine droplets and 2 to distribute them evenly with the desired spray pattern A narrower spray angle It is difficult to give guidelines since results on different nozzles at different pressures and with 3 different liquids are scarcely predictableHowever our experience shows that in many cases the use of impact nozzles can give acceptable results where all other type of nozzle failsA laboratory test or a field test are stili the safest way to obtain sound results

50

45

40

35

30

25

20

15

10

5

0 2 3 4 5 6 7 8 9

Increase Flow rate vs Whirl Chamber Diameter

Incr

ease

Flo

w R

ate

[mm

]

Whirl Chamber Diameter [mm]

LIQUID SPRAY AND SPRAY NOZZLES Influence of liquid viscosityLI

QUID

SPR

AYAN

D SP

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With reference to the Bernoulli Rule as exposed in page 6 one can say that the pressure energy of the liquid flow at the nozzle inlet is transformed totally (minus some losses due to friction inside the nozzle) into liquid velocity at the nozzle orificeCatalogue figures give nozzle capacities when spraying waterIf the specific gravity or density of the liquid is different from that of water the available pressure energy will produce a different liquid velocity at the nozzle orificesIn other words a given quantity of energy will spray always the same quantity of liquid mass but different volumes (flow rates) according to the liquid specific gravity or density

Therefore a liquid heavier than water will exit the nozzle with a lower velocity at lower flow rate while to the contrary a liquid lighter than water will be sprayed at higher velocity at higher flow rate

The following formula is to be applied

The table below gives the value of a correction factor to obtain the flow rate of a liquid with different specific weight as water

WhereQL Liquid flow rateQW Water flow rateF Correction factor

kgliter Libregallon F

06 50 129

07 58 120

08 67 112

09 75 105

10 83 100

11 92 095

12 100 091

13 109 088

14 117 085

15 125 082

16 134 079

17 142 077

18 150 075

19 159 073

20 167 071

QL = F QW8

LIQUID SPRAY AND SPRAY NOZZLES Influence of liquid specific gravity

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The spraying water impact of a nozzle depends on several factors and more precisely spray distribution pattern and spray angle The first step to calculate the impact value which is usually expressed in Kilograms per square centimeter is to deter-mine Total Theoretical lmpact Value using the following formula

The obtained value has to be multiplied by the Total Theoretical Impact per Square Centimeter Coefficient (E)The final value is the Spraying Liquid Impact expressed in kgpcm2Of course not alI the energy of the fluid vein is transferred to the impact point

A part of this energy sometimes a considerable part goes to obtain a desired spraying angle by having the liquid vein acquire a high rotational speed inside the whirl chamber The highest value of impact is obtained with straight jet nozzle and the value can be calculated multiplying spraying pressure per 19The tables below containing the Total Theoretical Impact sqcm coefficient values for different spray pattern nozzles for a dis-tance of 300 mm

[kgpcm2]

TOTAL THEORETICAL IMPACT PER SQ CM COEFFICIENT AT DISTANCE OF 300 MM (E)

Spray Flat jet nozzle Spray Full cone nozzle Spray Hollow cone nozzle Angle Angle Angle

15deg 0300 15deg 0110 25deg 0180 35deg 0130 30deg 0025 40deg 0120 50deg 0100 50deg 0010 65deg 0070 65deg 0004 60deg80deg 001002 80deg 0050 80deg 0002 100deg 0001

WhereQ is the flow rate at working pressure in lpmP is the pressure value in kgpcm2

[kgpcm2]TTI = 0024 Q P

SLI = E TTI

9

10

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SLIQUID SPRAY AND SPRAY NOZZLES Jet impact

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Jet impact diagram

A further parameter to characterize the performance of a spray nozzle is the distribution of the jet impact force which could be derived by means of mathematical methods from the values of the spray distribution onto the surface covered by the spray but which can more easily be measured with the help of specifically designed instrumentation

In some applications the jet impact force Is the most important parameter used to realize the required processSteel sheet descaling in a rolling mill is a typical example where the jet impact is required to take away the surface scale and obtain a perfectly even surfaceFor that reason special nozzles have been developed to perform this very task where service life impact value and spray distribution reach the values required for satisfactory resultThese test are performed in a laboratory equipped with a specifically designed instrumentation where the high pressures involved in these process can be reached which can measure the pressure values along a matrix of points distributed in the spray area covered by the nozzle

These values are supplied both in a table of values and as a 3D pressure diagram similar to those shown below

On such applications where producing high impact values in the jet is necessary it is of paramount importance that the liquid flow turbulence is kept to a minimum and therefore it is widely used to insert into the nozzle entrance devices designed to improve the operating conditions by forcing the liquid flow through straight passages with several different shapes by doing so the impact delivered by the spray is increased with the same feed pressure

One typical shape used by Pnr is shown on the right and the two dia-grams below show the impact force diagrams for the same nozzle with and without a flow straightener the reduction of flow turbulence can lead in increase of impact force often higher than 20Further improvements of course are available when the nozzle inside profile is properly designed in order to avoid sharp cross section changes and all surfaces are finished as smoothly as possible

Typical design of a Pnr flow straightener

Impact pressure diagram with flow straightenerImpact pressure diagram without flow straightener

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LIQUID SPRAY AND SPRAY NOZZLES Jet impact

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LIQUID SPRAY AND SPRAY NOZZLES Pressure drop through a nozzle

Pressure drop through a nozzle

Some of our customers have asked us In the past which Is the pressure drop through a nozzle since they consider a nozzle one of the parts in a piping like a valve or an elbow which causes a given pressure drop along the line

The reality is different and can be easily understood when considering the Bernoulli formula [2] as given at page 19 of this manual the formula says that the total energy of a liquid flow is made from the addition of three facors

Potential energy due to elevationbullPressure energybullVelocity energybull

When we apply the formula at the entrance and at the outlet ( the orifice ) of a nozzle and we neglect the influence of turbulence losses in between we can easily see that

The potential energy variation can be neglected because of the limited dimensions of the nozzle since the distance bullbetween the nozzle entrance and the nozzle orifice plays no role-The pressure energy variation is important since the liquid pressure value falls abruptly from the pressure inside the feed bullpipe to the ambient pressureThe velocity energy variation is also consistent since the liquid is ejected from the orifice at high speedbull

In other words the pressure energy of the liquid flowing through the orifice is suddenly transformed in liquid drops velocity which is exactly what a nozzle is designed to do

This is shown from equation [3] at page 19 which allows the exit velocity from the nozzle to be calculated from the pressure inside the pipe ( we actually consider the pressure difference between the inside of the pipe and the ambient pressure in this formula )

In other words all the energy still available at the nozzle is converted into velocity or if you so prefer you have a total pressure fall The system designer shall therefore evaluate all the pressure drop between the pump outlet flange and the nozzle entrance in order to be sure that the nozzle feed pressure is sufficient to assure the desired capacity for the liquid being sprayed

parameters valuesat nozzle outlet

nozzle inlet nozzle oulet or orice

feed pressure

inlet velocity

parameters valuesat the nozzle inlet

(A)potential elevation

energy

(A)velocity ( kinetic ) energy

(A)pressure energy

ambient pressure

exit velocity

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The choice of the right material for a nozzle is sometimes the most important one to do since the nozzle operating life depends upon it There are several factors to influence or shorten the nozzle operating life sometimes more than one at the same time the most important being

Wear from solid particles suspended into the liquid being sprayed1 Chemical corrosion from the liquid being sprayed 2 Chemical corrosion from the ambience outside the nozzle3 Exposure to high temperature 4 Exposure to mechanical shocks5

NOZZLE MATERIALSPnr material codes 34Properties of materials 35Mechanical properties of materials 39Chemical resistance of materials 40

NOZZLE MATERIALS

34 wwwpnr-nozzlescom CTG SH 07 EU

PNR has adopted a short code to identify construction materials for nozzles and nozzle partsHere below the most frequenty used materials

MATERIAL STANDARDS

The following standards are mentioned with reference to materials identification

NOZ

ZLE

MAT

ERIA

LS

A1 Free Cutting Steel E1 TEFLONreg (PTFE) L3 NICROFERreg 5923

A2 Carbon Steel E3 DELRINreg (POM) L4 STELLITEreg 6

A8 Zinc Plated Mild Steel E6 PERSPEXreg (PMMA) L5 HASTELLOYreg B2

A9 Nickel Plated Mild Steel E7 VITONreg (FPM) L6 HASTELLOYreg C4

B2 AISI 304 Stainless Steel E8 NBR- Sh 70 Rubber L61 HASTELLOYreg C22

B3 AISI 316 Stainless Steel E81 SANTOPRENEreg Rubber L62 ULTIMETreg

B31 AISI 316L Stainless Steel E82 KLINGERITEreg L7 NICKEL 201

B4 AISI 321 Stainless Steel E83 HYPALONreg L8 HASTELLOYreg C276

B8 AISI 309 Stainless Steel E91 Silicon L9 SANICROreg 28 SS

B81 AISI 310 Stainless Steel F12 Tungsten Carbide (TC) N1 AISI 302 Stainless Steel

C1 AISI 420 St Steel hardened F2 PIREXreg P6 ABS

C4 AISI 317 Stainless Steel F3 Rubin P7 FASIT OIL

C6 SAF 2205 Stainless Steel F4 Zapphire P8 EPDM ShA Rubber

D1 Polyvinylchloride (PVC) F5 Ceramic P9 STIROLUXreg 637

D2 Polypropylene (PP) F6 Silicon Carbide (SC) T1 Brass

D3 Polyamide (PA) G1 Cast Iron T3 Copper

D5 Powder Charged PP H1 Titanium T5 Bronze

D6 Fiberglass Charged PP L1 MONEL 400 T8 Nickel Plated Brass

D7 High Density Polyethylene L2 INCOLOYreg 825 V1 Aluminium

D8 Polyvinylidenefluoride (PVDF) L21 INCONELreg 600 V7 Aluminium ENP

STANDARD ORGANIZATION COUNTRY STANDARD CODE

AFNOR Association Franccedilaise de Normalisation France NF

AISI American Iron and Steel Institute USA AISI

ANSI American National Standards Institute USA ANSI

ASTM American Society for Testing and Materials USA ASTM

BSI British Standards Institution UK BS

DIN Deutsches Institut fuumlr Normung Germany DIN

DSIT Dansk StandardsInformation Technology Denmark DS

ISO International Organization for Standardization International ISO

JIS Japanese Institute for Standard Japan JIS

UNI Ente Nazionale di Unificazione Italy UNI

NOTEThe complete list of the Materials Codes may be requested to our Technical Service mentioning release code TGCE CODMAT

NOZZLE MATERIALS PNR material codes

35wwwpnr-nozzlescomCTG SH 07 EU

NOZ

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MAT

ERIA

LS

B1 AISI 303 STAINLESS STEEL

Chemical composition CR 1750 NI 850 S 025 Coding correspondence

Type Stainless Steel Austenitic AISI 303

Hardening Not possible BS 303 S 21

Annealing 1050 1100deg C in water DIN Wnr 14305

Welding Possible with precautions Euro X10CrNiS1809

Corrosion properties

Good resistance Atmospheric exposure food substances organic chemicalsLow resistance Chlorides reducing acids and over 800deg C

JIS SUS 303

NF Z6CN 18-09

SIS 2346

UNI XWCrNiS 1809

B3 AISI 316 STAINLESS STEEL

Chemical composition C 005 CR 170 NI 120 MO 225 Coding correspondence

Type Stainless Steel Austenitic AISI 316

Hardening Not possible BS 316 S 21

Annealing 1050 1100deg C in water DIN Wnr 14401

Welding Easy using same steel electrodes Euro X6CrNiMo17122

Corrosion properties

Good resistance Atmosphere great number of salts organic acids foodsLow resistance Solutions of reducing acids temperatures over 500deg C

JIS SUS 316

NF Z6CND 17-11

SIS 2347

UNI X5CrNiMo1712

B31 AISI 316L STAINLESS STEEL

Chemical composition C 003 CR 170 NI 130 MO 225 Coding correspondence

Type Stainless Steel Austenitic AISI 316 L

Hardening Not possible BS 316S12

Annealing 1050 1100deg C in water DIN Wnr 14404

Welding Easy using same steel electrodes Euro X3CrNiMo1810

Corrosion properties

Good resistance Atmosphere great number of salts organic acids foods salt waterLow resistance Solutions of reducing acids temperatures over 500deg C

JIS SUS 316L

NF Z2CND17-12

SIS 2348

UNI X2CrNiMo 1712

NOZZLE MATERIALS Properties of materials

36 wwwpnr-nozzlescom CTG SH 07 EU

C1 AISI 420 STAINLESS STEEL

Chemical composition C 020 CR 1300 Coding correspondence

Type Stainless Steel Martensitic AISI 420

Hardening 980deg - 1030deg C in oil BS 420 S 29

Annealing 750deg - 800deg C in air DIN Wnr 14021

Welding Possible with precautions Euro X20Cr13

Corrosion properties Good resistance Drinkable water steamgasoline oil alcohol ammonia

JIS SUS 420 J1

NF Z20C13

SIS 2303

UNI X20Cr13

C2 AISI 416 STAINLESS STEEL

Chemical composition C 012 CR 1250 S 022 Coding correspondence

Type Stainless Steel Martensitic AISI 416

Hardening 950deg - 1100deg C in oil BS 416 S 21

Annealing 750deg - 800deg C DIN Wnr ---

Welding Not possible Euro X120CrS13

Corrosion properties Good resistance Drinkable water steamgasoline oil alcohol ammonia

JIS SUS 416

NF Z12CF13

SIS ---

UNI X12CrS13

D8 POLYVINYLIDENE FLUORIDE (PVDF)

Description HIGH-MOLECULAR WEIGHT THE TOUGHEST OF THE FLUOROCARBON RESINS

Trade names amp SuppliersKYNAR (Atochem North America Inc formerly Penwalt Corporation)

SOLEF (Solvay Polymer Corporation)

Physical andMechanical Properties

Excellent resistance to abrasion and stress fatigue

Extremely pure opaque white resin

Thermal Properties UsefuI in temperatures ranging from -73 149degC (-100 300degF)Heat deflection temperature is (8090deg C at 182 Bars (176 194deg F at 264 psi)

Chemical Compatibility

Excellent chemical resistanceCan be used with wet or dry halogens most strong acids and bases aliphatics aromaticsalcohols and strong oxidizing agentsNot recommended for contact with ketones esters amines and some organic acids(fuming sulfuric acid)

NOZZLE MATERIALS Properties of materialsN

OZZL

E M

ATER

IALS

37wwwpnr-nozzlescomCTG SH 07 EU

E1 POLYTETRAFLUOROETHYLENE (PTFE)

Description FLUOROPLASTIC THAT HAVE SOME OR ALL OF THEIR HYDROGEN MOLECULESREPLACED BY FLUORINE

Trade names amp Suppliers

TEFLON TFE FEP and PFA (Dupont Polymer Products)

NEOFLON (Daikin)

FLUON (ICI Americas Inc)

SST-2SST-3 (Shamrock Technologies Inc)

Physical andMechanical Properties

Low coefficient

Low adhesiveness

Buona resistenza agli agenti atmosferici

Good weatherabilityLow resistance to creep and wear unless reinforced with glass figravebers which results in superior resistance

Thermal Properties High and low temperature stabilityHeat deflection temperatures range from 4855deg C at 182 bar (118-132deg F at 264 psi)

Chemical CompatibilityChemically inert

Totally insoluble

E3 ACETAL (ACETAL HOMOPOLYMERS AND COPOLYMERS)

Description HIGHLY CRYSTALLINE RESINS BASED ON FORMALDEHYDE POLYMERIZATION TECHNOLOGY

Trade names amp Suppliers

DELRIN (Dupont Polymer Products Corporation)

CELCON (Hoechst Celanese Corporation)

ULTRAFORM (BASF Corporation)

RTP 800 (RTP Corporation)

LUPITAL amp TENAL (Franklin Polymers Inc)

FULTRON 404 (ICI Americas Inc)

Physical andMechanical Properties

High tensile strength rigidity and esilience

High fatigue endurance

Excellent dimensional stability

Low coefficient of friction

Outstanding abrasion and wear resistance

Excellent creep resistance

Thermal Properties Heat deflection temperatures range from 110 -136deg C at 182 bars(230 - 270deg F at 264 psi) higher if glass figravelled

Chemical Compatibility

Remains stable in long-term high temperature water immersionExcellent resistance to chemicals and solvents but prolonged exposure to strong acids not recommendedNote Suitable for close-tolerance high-performance partsAvailable for machined parts or may be injection molded

NOZZLE MATERIALS Properties of materials

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38 wwwpnr-nozzlescom CTG SH 07 EU

L6 HASTELLOY C4

PHYSICAL AND MECHANICAL PROPERTIES CHEMICAL COMPOSITION CORROSION RESISTANCE

R = 650800 Mpa C = 0015 max

Very good against pitting and tensile-corrosion specially in oxydizing atmosphereResistance in welded joints definitely better than C 276 lower than C22

Rp02 = 250470 Mpa Ni = 65

HRB = 90 Cr = 160

Mo = 155

W = --

Fe = 3 max

Ti = 05

Co = 2 max

APPLICATIONSRecommended for applications with strongly oxidizing atmosphere

L61 HASTELLOY C 22

PHYSICAL AND MECHANICAL PROPERTIES CHEMICAL COMPOSITION CORROSION RESISTANCE

R = 700800 Mpa C = 001 max

Excellent performances with oxydizing atmospheres as well as for pitting and tensile-corrosion conditionsVery good resistance in reducing atmospheres and for welded joints

Rp02 = 360420 Mpa Ni = 56

HRB = 93 Cr = 22

Mo = 13

W = 3

Fe = 3

Ti = --

Co = 25 max

APPLICATIONSChemical industry (gas ducts gas washing and treatment systems phosphoric acid production) Heat exchangers pumps chlorination reactors

L8 HASTELLOY C 276

PHYSICAL AND MECHANICAL PROPERTIES CHEMICAL COMPOSITION CORROSION RESISTANCE

R = 600800 Mpa C = 0015 max

Very good in reducing and oxydizing atmospheresVery good against pitting and tensile-corrosionAcceptable resistance in welded jointsIn cast parts excessive segregation not eliminated by thermal treatment of annealing makes it convenient to use C22 or C4 qualitieswhich assure better corrosion resistance and mechanical properties

Rp02 = 300370 Mpa Ni = 57

HRB = 90 Cr = 145165

Mo = 1517

W = frac345

Fe =

V = 035 max

Co = 25 max

APPLICATIONSChemical industry (air ducts scrubbers fans) Paper industry Thermoelectric plants Steel thermal treatments

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MATERIALTENSILE STRENGHT

CORROSION RESISTANCERp 02 R

20degC 800degC 20degC 800degC

(68degF) (1408degF) (68degC) (1408degC)

AISI 302 280 100 680 200

Good sensitive to corrosionbetween grains for slow heatingand cooling in the 450-900deg Crange temperature

AISI 303 280 100 680 200 Discrete

AISI 304304L 270 90 600 100Good especially for 304L304 sensitive to corrosionbetween grains like AISI 302

AISI 309 250 100 640 220 Good Sensitive to corrosion between grains like AISI 302

AISI 310 310 170 650 270Good (gt 304 - 304L)Sensitive to corrosionbetween grains like AISI 302

AISI 316316L 270 110 560 220 Very high especially for 316L

AISI 321 210 100 540 140 Good

AISI 347 280 120 620 200 Good

AISI 416 620 70 750 90

Good in medium corrosive ambient (atmosphere water gasoline alcohol N1-13 foods)Not in high corrosive

BRASS 110-150 --- 360-410 --- Good especially when nickel plated

BRONZE 100-300 --- 200-600 --- Discrete especially with sea water

CAST IRON le 500 V 100-800 V

NICKEL ALLOYS 100-1000 V 300-1300 VVery high also for high temperature To use in the temperaturerange 800-1200deg C

PLASTICS --- --- 20-200 ---

Good also for erosionGenerally they are attackedwith oxidizers like nitric acidhalogens ect

PTFE --- --- 30-40 ---

Very high except for elementarystate of alkaline metalsand to compounds containingfluorine at high temp

DUPLEX STEEL gtAISI 3 gtAISI 3 gtAISI 3 gtAISI 3 Very high also with high temperatureand also for pitting

TITANIUM alloy 195-850 V 300-900 VVery high in oxidizing ambientVery low in reducing ambient and with compounds containing fluorine

Legend Rp 02 = 02 YIELD STRENGHT [MPa]R = ULTIMATE TENSILE STRENGHT [MPa]V = To verify time by time

NOZZLE MATERIALS Mechanical properties of materials

NOZ

ZLE

MAT

ERIA

LS

73wwwpnr-nozzlescomCTG SH 07 EU

PIPI

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PIPINGPipes data 74Economic pipe sizes 75Pressure drop in clean steel pipes 76Flange dimensions 78Sieve size conversion chart 80

PIPING

74 wwwpnr-nozzlescom CTG SH 07 EU

The following table report the data of pipes according to ANSI B3619 that is one of the most used standards that regulate welded stainless steel pipes

DN NPS OD[mm]

SCHEDULE

5S 10S 40SSTD 80SXS

t m t m t m t m

[mm] [kgm] [mm] [kgm] [mm] [kgm] [mm] [kgm]

6 18 103 NA NA 124 028 173 037 241 048

8 14 137 NA NA 165 050 224 064 302 081

10 38 172 NA NA 165 064 231 086 320 112

15 12 213 165 081 211 101 277 128 373 164

20 34 267 165 103 211 130 287 171 391 223

25 1 334 165 131 277 212 338 254 455 328

32 1frac14 422 165 167 277 273 356 344 485 453

40 1frac12 483 165 192 277 315 368 411 508 549

50 2 603 165 242 277 399 391 551 554 759

65 2frac12 730 211 374 305 534 516 875 701 116

80 3 889 211 458 305 655 549 115 762 155

90 3frac12 1016 211 525 305 752 574 138 808 189

100 4 1143 211 592 305 849 602 163 856 226

125 5 1413 277 960 340 117 655 221 953 314

150 6 1683 277 115 340 140 711 287 1097 432

200 8 2191 277 150 376 202 818 431 1270 656

250 10 2730 340 229 419 282 927 611 1270 827

300 12 3239 396 317 457 365 953 749 1270 988

350 14 3556 396 348 478 419 NA NA NA NA

400 16 4064 419 421 478 480 NA NA NA NA

450 18 457 419 474 478 541 NA NA NA NA

500 20 508 478 602 554 696 NA NA NA NA

550 22 559 478 662 554 767 NA NA NA NA

600 24 610 554 837 635 959 NA NA NA NA

Where

DN = Nominal diameter NPD = Nominal Pipe Size OD = Outside Diameter t = Wall Thickness m = Specific WeightPIPI

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PIPING Pipes data

75wwwpnr-nozzlescomCTG SH 07 EU

The following Specific Pressure Drops (Y) are normally used in the good engineering practice(where Y=ΔPL ΔP Pressur Drop and L Pipe Lenght)

For pipe sizing the Velocity (V) is also usedIn the following table are shown the typical liquid velocities in steel pipes

Some fixed pressure drop values indicationsfor gate valves (fully open) consider a pressure drop of 5 metersbullfor normal bends consider a pressure drop of 5 metersbullfor a check valve consider a pressure drop of 15 metersbull

In the succeeding tables we show the velocity and specific pressure drop for several flow rates and pipe diameters

Not boiling waterY = 02divide05 bar100 m for pump discharge (07 bar100 m max if P gt 50 bar)

Y lt 0110 bar100 m for pump suction

Boiling water Y = 004divide005 bar100 m for pump suction (velocity = 03divide09 ms)

LIQUID LINE TYPE

Specific Pressure Dropsvs Velocity [ms]

0 lt V lt 2 3 lt V lt 10 10 lt V lt 20

NOT BOILING WATER

Pump suctionPump discharge (long)Discharge leads (short)Boiler feedDrainsSloped sewer

03 divide 0606 divide 0912 divide 2712 divide 2709 divide 12

-

06 divide 1209 divide 1515 divide 3715 divide 3709 divide 1509 divide 15

09 divide 1812 divide 2124 divide 4224 divide 42

-12 divide 21

HYDROCARBON LIQUIDS(normal viscosity)

Pump suctionDischarge heather (long)Discharge leads (short)Drains

05 divide 0808 divide 1112 divide 2709 divide 12

06 divide 1209 divide 1515 divide 3709 divide 15

09 divide 1812 divide 2124 divide 46

-

MEDIUM VISCOSITY OILPump suctionDischarge (short)Drains

--

03

05 divide 0901 divide 0209 divide 15

08 divide 1501 divide 0312 divide 18

OTHER WATERCooling tower Chilled waterSea water and generally foulingwater (long pipes) ()

06 divide 09 09 divide 15 12 divide 21

Note () In this case Cameron method has to be used with C=1 Y = 005 divide 012 bar100 m for principal manifold Y = 012 divide 023 bar100 m for secondary manifold

PIPI

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PIPING Economic pipe sizes

76 wwwpnr-nozzlescom CTG SH 07 EU

18rdquo 14rdquo

1 0350 0370 0200 0090 38rdquo 12rdquo

2 0705 1340 0395 0331 0223 0082 0145 0029 34rdquo

3 1060 2890 0593 0673 0333 0176 0217 0061 0125 0016 1rdquo

4 1410 4940 0788 1150 0444 0291 0290 0101 0167 0027 0110 0010

5 1760 7460 0985 1750 0556 0424 0362 0149 0209 0040 0137 0014

6 1180 2460 0667 0594 0434 0207 0251 0054 0165 0019 114rdquo

8 1580 4060 0892 1020 0579 0351 0335 0091 0219 0033 0126 0009 112rdquo

10 1110 1530 0724 0534 0418 0136 0274 0049 0158 0012 0116 0006

15 1670 3250 1090 1130 0627 0284 0411 0099 0236 0026 0174 0012

20 2rdquo 2230 5600 1450 1900 0836 0481 0549 0168 0315 0043 0233 0021

30 0212 0013 212rdquo 2170 4130 1250 1020 0823 0353 0473 0092 0348 0043

40 0283 0022 0190 0007 2900 7180 1670 1760 1100 0606 0631 0155 0465 0073

50 0354 0032 0237 0012 2090 2700 1370 0911 0789 0233 0581 0108

60 0424 0044 0284 0017 2510 3810 1650 1290 0943 0321 0697 0150

70 0495 0079 0332 0022 3rdquo 2930 5120 1920 1720 111 0434 0814 0199

80 0566 0074 0379 0028 0248 0010 312rdquo 2190 2210 126 0554 0925 0253

90 0636 0093 0427 0035 0279 0013 0209 0006 2470 2770 142 0692 1040 0319

100 0707 0114 0474 0043 0310 0015 0232 0007 4rdquo 2740 3400 158 0843 1160 0392

150 1060 0238 0711 0090 0464 0031 0349 0016 0272 0008 4110 7440 236 181 1740 0828

200 1410 0414 0948 0153 0619 0053 0466 0027 0362 0014 315 314 2330 1450

250 1760 0625 1190 0233 0774 0080 0581 0040 0453 0021 5rdquo 2900 2200

300 2120 0889 1420 0324 0930 0112 0698 0055 0543 0030 0352 0011 3480 3070

350 2470 1190 1660 0438 1080 0150 0815 0074 0634 0040 0411 0014 6rdquo 4070 4160

400 2830 1550 1900 0563 1240 0195 0935 0096 0724 0051 0469 0018 0341 0007 4650 5380

450 3180 1930 2130 0707 1390 0242 1050 0120 0815 0063 0528 0022 0366 0009 5230 6790

500 3540 2380 2370 0867 1550 0298 1170 0147 0902 0076 0587 0027 0407 0011

550 3880 2870 2610 1040 1700 0354 1280 0174 0991 0092 0645 0032 0447 0013

600 4240 3390 2840 1220 1860 0418 1400 0204 1090 0110 0704 0037 0488 0015

650 4590 5560 3080 1420 2010 0486 1510 0239 1180 0127 0762 0043 0529 0017

700 4950 4550 3320 1650 2170 0560 1630 0275 1270 0146 0821 0050 0569 0020

750 5300 5200 3560 1880 2320 0637 1750 0314 1360 0164 0879 0057 0610 0023

800 3790 2130 2480 0721 1860 0354 1450 0185 0936 0064 0651 0025 8rdquo

850 4030 2390 2630 0805 1980 0395 1540 0209 1000 0072 0692 0028 0403 0007

900 2790 0901 2090 0438 1630 0232 1050 0008 0732 0032 0427 0008

950 2940 1000 2210 0486 1720 0258 1120 0087 0773 0036 0451 0010

1000 3100 1110 2320 0534 1810 0284 1170 0096 0814 0039 0474 0011

1100 3410 1290 2560 0643 1990 0341 1290 0116 0895 0047 0522 0012

1200 3720 1 580 2800 0763 2170 0403 1410 0135 0974 0055 0569 0015

1300 3030 0890 2360 0473 1530 0157 1060 0063 0616 0017

1400 3260 1020 2540 0544 1640 0183 1140 0072 0664 0019

1500 3490 1170 2720 0617 176 0208 1220 0083 0712 0022

1600 3720 1330 2890 0697 1880 0234 1300 0093 0758 0025

1700 10rdquo 3950 1490 3080 0784 1990 0260 1380 0104 0806 0028

1800 0546 0010 3260 0875 2110 0290 1470 0116 0854 0032

1900 0575 0012 3440 0965 2230 0323 1550 0129 0901 0034

2000 0606 0012 3617 1060 2340 0356 1630 0143 0946 0037

2200 0667 0015 3980 1280 2580 0429 1790 0172 1050 0045

2400 0727 0017 12rdquo 2820 0507 1950 0200 1140 0053

2600 0788 0021 0563 0009 3050 0589 2110 0234 1230 0061

2800 0848 0023 0606 0010 14rdquo 3280 0676 2280 0268 1330 0070

3000 0909 0026 0649 0011 0532 0007 3520 0773 2440 0306 1420 0080

3500 1060 0035 0760 0015 0620 0009 4110 105 2850 0416 1660 0108

4000 1210 0045 0866 0020 0709 0012 16rdquo 4690 135 3250 0532 1900 0139

4500 1360 0056 0976 0025 0798 0015 0606 0007 3660 0674 2130 0173

5000 1520 0069 1080 0029 0886 0018 0674 0009 4070 0822 2370 0212

6000 1810 0097 1290 0042 1070 0026 0808 0013 18rdquo 4880 1160 2850 0301

7000 2120 0130 1510 0055 1240 0035 0940 0017 0741 0010 5690 1580 3310 0403

8000 2420 0168 1730 0072 1420 0045 1080 0022 0847 0012 6510 2050 3790 0525

9000 2730 0210 1950 0091 1600 0056 1210 0027 0954 0015 4270 0659

10000 3030 0257 2170 0111 1770 0067 1350 0033 1050 0019 4740 0801

Legend Q Water Flow Rate (Lpm) V Velocity (ms) Y Specific Pressure Drops (bar100m)Water at ambient temperature in straight pipe

SPECIfIC PRESSURE DROPS fOR WATER fLOW IN CLEAN STEEL PIPE SCH 10S

Q V Y V Y V Y V Y V Y V Y V Y V Y [lm] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m]

PIPI

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77wwwpnr-nozzlescomCTG SH 07 EU

SPECIfIC PRESSURE DROPS fOR WATER fLOW IN CLEAN STEEL PIPE SCH 40S

Legend Q Water Flow Rate (Lpm) V Velocity (ms) Y Specific Pressure Drops (bar100m)Water at ambient temperature in straight pipe

18rdquo 14rdquo

1 0458 0726 0251 0170 38rdquo 12rdquo

2 0918 2590 0501 0600 0272 0136 0170 0044 34rdquo

3 1380 5590 0752 1220 0407 029 0255 0091 0144 0023 1rdquo

4 1840 9570 1000 2090 0543 048 0340 0151 0192 0038 0120 0012

5 2290 14450 1250 3180 0679 070 0425 0223 0241 0057 0150 0017

6 1500 4460 0815 0980 0510 0309 0289 0077 0180 0024 114rdquo

8 2010 7360 1090 1690 0680 0524 0385 0129 0240 0041 0138 0011 112rdquo

10 1360 2520 0850 0798 0481 0193 0300 0061 0172 0015 0127 0008

15 2040 5370 1280 1690 0722 0403 0450 0124 0258 0032 019 0015

20 2rdquo 2720 9240 1700 2840 0962 0683 0600 0210 0344 0054 0254 0026

30 0231 0016 212rdquo 2550 6170 1440 1450 0900 0442 0517 0114 038 0053

40 0308 0027 0216 0010 3400 10720 1920 2500 1200 0758 0689 0193 0507 0091

50 0385 0039 0270 0017 2410 3830 1500 1140 0861 029 0634 0135

60 0462 0055 0324 0023 2890 5410 1800 1610 103 0400 0761 0187

70 0539 0098 0378 0031 3rdquo 3370 7270 2100 2150 1210 0541 0888 0248

80 0616 0092 0432 0039 028 0014 312rdquo 2400 2760 1380 0690 1010 0315

90 0693 0115 0486 0048 0315 0017 0235 0008 2700 3470 1550 0862 1140 0397

100 0770 0141 0540 0059 035 002 0261 0010 4rdquo 3000 4250 1720 1050 1270 0488

150 1150 0295 0810 0125 0524 0042 0392 0021 0304 0011 4500 9300 2580 2260 1900 1030

200 1540 0512 1080 0212 0699 0072 0523 0036 0405 0019 3440 3910 2540 1810

250 1920 0773 1350 0322 0874 0108 0653 0053 0507 0028 5rdquo 3170 2740

300 2310 1100 1620 0449 105 0152 0784 0074 0608 004 0387 0014 3800 3820

350 2690 1470 1890 0606 122 0203 0915 0099 0710 0053 0452 0018 6rdquo 4440 5180

400 3080 1920 2160 0780 14 0264 1050 0128 0811 0068 0516 0023 0375 0009 5070 6690

450 3460 2390 2430 0979 157 0328 1180 0161 0912 0084 0581 0028 0402 0012 5710 8450

500 3850 2950 2700 1200 175 0403 1310 0196 1010 0101 0646 0034 0447 0014

550 4230 3550 2970 1440 192 0479 1440 0232 1110 0122 0710 0041 0491 0016

600 4620 4200 3240 1690 2100 0566 1570 0273 1220 0146 0775 0047 0536 0019

650 5000 6880 3510 1970 2270 0658 1700 0319 1320 0169 0839 0055 0581 0022

700 5390 5630 3780 2280 2450 0759 1830 0368 1420 0194 0904 0063 0625 0025

750 577 6440 4050 2600 2620 0863 1960 042 1520 0218 0968 0072 067 0029

800 4320 2950 2800 0977 2090 0473 1620 0246 1030 0081 0715 0032 8rdquo

850 4590 3310 2970 1090 2220 0528 1720 0277 1100 0091 076 0036 0439 0009

900 3150 1220 2350 0585 1820 0308 1160 0100 0804 0041 0465 001

950 3320 1350 248 0649 1930 0342 1230 0111 0849 0045 0491 0012

1000 3500 1500 261 0714 2030 0377 1290 0122 0894 0049 0516 0013

1100 3850 1750 2870 0860 2230 0452 1420 0147 0983 0059 0568 0015

1200 4200 2140 3140 1020 2430 0534 1550 0172 1070 0069 0620 0018

1300 3400 1190 2640 0627 1680 0200 1160 008 0671 0021

1400 3660 1370 2840 0722 1810 0232 1250 0091 0723 0024

1500 3920 1560 3040 0818 1940 0264 1340 0105 0775 0027

1600 4180 1780 3240 0924 2070 0297 1430 0118 0826 0031

1700 10rdquo 4440 1990 3450 1040 2190 0331 1520 0132 0878 0035

1800 0590 0012 3650 1160 2320 0369 1610 0147 0930 0039

1900 0622 0014 3850 1280 2450 041 1700 0163 0981 0042

2000 0655 0015 40500 1410 2580 0452 1790 0181 1030 0046

2200 0721 0018 4460 1700 2840 0545 1970 0217 1140 0056

2400 0786 0021 12rdquo 3100 0645 2140 0253 1240 0065

2600 0852 0025 0600 001 3360 0749 2320 0296 1340 0076

2800 0917 0028 0646 0012 14rdquo 3610 0859 2500 0339 1450 0087

3000 0983 0032 0692 0013 0573 0008 3870 0982 268 0387 1550 0099

3500 1150 0043 0810 0018 0668 0011 4520 1330 3130 0526 1810 0134

4000 1310 0055 0923 0023 0764 0014 16rdquo 5160 1720 3570 0673 2070 0172

4500 1470 0068 1040 0029 0860 0018 0658 0009 4020 0853 2320 0214

5000 1640 0084 1150 0034 0955 0022 0731 0011 4470 1040 2580 0262

6000 1960 0118 1380 0049 1150 0031 0877 0016 18rdquo 5360 1470 3100 0373

7000 2290 0158 1610 0065 1340 0042 1020 0021 0808 0012 6250 2000 3610 0499

8000 2620 0204 1840 0085 1530 0054 1170 0027 0924 0015 7150 2590 4130 065

9000 2950 0256 2080 0107 1720 0067 1310 0033 1040 0019 4650 0816

10000 3280 0313 2310 0130 1910 0081 1460 0041 1150 0023 5160 0992

Q V Y V P V Y V Y V Y V Y V Y V Y [lm] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m]

PIPI

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78 wwwpnr-nozzlescom CTG SH 07 EU

10 75 12 038 4 11 50

15 80 12 044 4 11 55

20 90 14 065 4 11 65

25 100 14 082 4 11 75

32 120 14 117 4 14 90

40 130 14 139 4 14 100

50 140 14 162 4 14 110

65 160 14 214 4 14 130

80 190 16 343 4 18 150

100 210 16 422 4 18 170

125 240 18 611 8 18 200

150 265 18 751 8 18 225

175 295 20 1020 8 18 255

200 320 20 1230 8 18 280

250 375 22 1850 12 18 335

300 440 22 2550 12 22 395

350 490 22 3180 12 22 445

400 540 22 3850 16 22 495

450 595 22 4700 16 22 550

500 645 24 6040 20 22 600

PN 6 (UNI 6091)

ND 6 (DIN 2527) DN Flange Holes

D t W N Oslash a

90 14 063 4 14 60

95 14 071 4 14 65

105 16 101 4 14 75

115 16 122 4 14 85

140 16 180 4 18 100

150 16 209 4 18 110

165 18 287 4 18 125

185 18 365 4 18 145

200 20 461 8 18 160

220 20 565 8 18 180

250 22 812 8 18 210

285 22 1050 8 22 240

315 24 1410 8 22 270

340 24 1620 12 22 295

405 28 2510 12 25 355

460 28 3520 12 25 410

520 30 4820 16 25 470

580 32 6350 16 30 525

640 32 7720 20 30 585

715 34 1020 20 33 650

PN 16 (UNI 6093)

ND 16 (DIN 2527) Dimensions Holes

D t W N Oslash a

ND 10 (DIN 2527) Dimensions Holes

D t W N Oslash a

90 14 063 4 14 60

95 14 071 4 14 65

105 16 101 4 14 75

115 16 122 4 14 85

140 16 180 4 18 100

150 16 209 4 18 110

165 18 287 4 18 125

185 18 365 4 18 145

200 20 461 4 18 160

220 20 565 8 18 180

250 22 812 8 18 210

285 22 1050 8 22 240

315 24 1410 8 22 270

340 24 1650 8 22 295

395 26 2410 12 22 350

445 26 3080 12 22 400

505 26 3960 16 22 460

565 26 4960 16 25 515

615 26 5860 20 25 565

670 28 7530 20 25 620

PN 10 (UNI 6092)

LegendaDN Nominal DiameterD Flange External Diametert Flange ThicknessW Flange WeightN Hole NumberOslash Hole Diametera Hole axis

PIPING Flange dimensionsPI

PIN

G

Blind flanges to DIN 2527

79wwwpnr-nozzlescomCTG SH 07 EU

LegendDN Nominal DiameterD Flange External Diametert Flange ThicknessW Flange WeightN Hole NumberOslash Hole Diametera Hole axis

12rsquorsquo 889 111 08 4 159 603

34rsquorsquo 984 127 09 6 159 698

1rsquorsquo 1079 143 10 4 159 794

114rsquorsquo 1175 159 13 4 159 889

112rsquorsquo 1270 175 14 4 159 984

2rsquorsquo 1524 190 18 4 190 1206

212rsquorsquo 1778 222 32 4 190 1397

3rsquorsquo 1905 238 41 4 190 1524

312rsquorsquo 2159 238 59 8 190 1778

4rsquorsquo 2286 238 77 8 190 1905

5rsquorsquo 2540 238 91 8 222 2159

6rsquorsquo 2794 254 118 8 222 2413

8rsquorsquo 3429 286 204 8 222 2984

10rsquorsquo 4064 302 318 12 254 3619

12rsquorsquo 4826 317 500 12 254 4318

14rsquorsquo 5334 349 600 12 286 4762

16rsquorsquo 5969 365 770 16 286 5397

18rsquorsquo 6350 397 950 16 317 5778

20rsquorsquo 6985 429 1230 20 317 6350

22rsquorsquo 7493 460 1510 20 349 6921

ANSI 150 lb DN Flange Holes

D t W N Oslash a

952 143 10 4 159 667

1175 159 14 4 190 825

1238 175 18 4 190 889

1333 206 27 4 190 984

1556 222 36 4 222 1143

1651 254 45 8 190 1270

190S 286 68 8 222 1492

209S 317 91 8 222 1683

2286 349 132 8 254 1841

2540 349 150 8 254 2000

2794 381 200 8 254 2349

3175 413 277 12 254 2699

3810 476 450 12 286 3302

4445 540 700 16 317 3873

5207 571 103 16 349 4508

5842 603 141 20 349 5143

6477 635 181 20 381 5715

7112 667 228 24 381 6286

7747 698 282 24 413 6858

8382 730 311 24 444 7429

ANSI 400 lb Dimensions Holes

D t W N Oslash a

ANSI 300 lb Dimensions Holes

D t W N Oslash a

952 143 10 4 159 667

1175 159 14 4 190 825

1238 175 18 4 190 889

1333 190 27 4 190 984

1556 206 32 4 220 1143

1651 222 36 8 190 1270

1905 254 54 8 222 1492

2095 286 73 8 222 1683

2286 302 95 8 222 1841

2540 317 122 8 222 2000

2794 349 159 8 222 2349

3175 365 227 12 222 2699

3810 413 370 12 254 3302

4445 476 580 16 286 3873

5207 508 840 16 317 4508

5842 540 1070 20 317 5143

6477 571 1390 20 349 5715

7112 603 3900 24 349 6286

7747 635 2230 24 349 6858

8382 667 2700 24 413 7429

PIPING Flange dimensions

PIPI

NG

flanges to ANSI norms

80 wwwpnr-nozzlescom CTG SH 07 EU

PIPI

NG

Sieves are used both for determining the particle size distribution of a granular material and to filter solid particles in a liquid Normally the sieve is made with a fabric whose characteristic dimensions areL is the Opening Width (free passage)D is the Diameter of the wireP is the Pitch of the wireS is the Thickness of the fabricTo classify particle sizes there is some Sieve Series according to specific standardsthe most known are Tyler Sieve Series US Sieve Series UK Sieve SerieshellipThe Tyler mesh size indicates exactly the number of openings per linear inch of mesh

L[microm]

TYLER Sieve[Mesh No]

ASTM E11 Sieve[Mesh No]

BS 410 Sieve[Mesh No]

DIN 4188 Sieve[mm]

5 2500 2500 0005

10 1250 1250 0010

15 800 800 0015

20 625 635 625 0020

22 0022

25 500 500 500 0025

28 0028

32 na 450 440 0032

36 0036

38 400 400 400

40 0040

45 325 325 350 0045

50 0050

53 270 270 300

56 0056

63 250 230 240 0063

71 0071

75 200 200 200

80 0080

90 170 170 170 0090

100 0100

106 150 140 150

112 0112

125 115 120 120 0125

140 0140

150 100 100 100

160 0160

180 80 80 85 0180

200 0200

In the german standard (DIN norm 4188) the Opening Width (L) is given in millimeters

PIPING Sieve size conversion chartPI

PIN

G

81wwwpnr-nozzlescomCTG SH 07 EU

L[microm]

TYLER Sieve[Mesh No]

ASTM E11 Sieve[Mesh No]

BS 410 Sieve[Mesh No]

DIN 4188 Sieve[mm]

212 65 70 72

250 60 60 60 0250

280 0280

300 48 50 52

315 0315

355 42 45 44 0355

400 0400

425 35 40 36

450 0450

500 32 35 30 0500

560 0560

600 28 30 25

630 0630

710 24 25 22 0710

800 0800

850 20 20 18

900 0900

1000 16 18 16 1000

1120 1120

1180 14 16 14

1250 1250

1400 12 14 12 1400

1600 1600

1700 10 12 10

1800 1800

2000 9 10 8 2000

2240 2240

2360 8 8 7

2500 2500

2800 7 7 6 2800

3150 3150

3350 6 6 5

3550 3550

4000 5 5 4 4000

4500 4500

4750 4 4 35

5000 5000

5600 35 35 3

6700 3 0265 in 1

8000 25 516 in na

Applicable standards areISO 565 (1987) ISO 3310 (1999) ASTM E 11-70 (1995)DIN 4188 (1977) BS 410 (1986) AFNOR NFX11-501 (1987)

Legend Q Water Flow Rate V Velocity P Pressure drop Pressure drop in bar per 100 meters of straight pipe (water at ambient temperature)

PIPING Sieve size conversion chart

PIPI

NG

Besides its main range of nozzles for industrial applications PNR manufactures a wide range of complementary products and systems to optimize the use of spray jets and fluids control in most of the modern industrial processes

PNR PRODUCT RANGE

CTG AC

CTG LS

CTG UG

CTG AZ

Complementary Products andAssembly FittingsA complete line of nipples clamps swivel joints and everything that helps you to assemble align and service your spraying systems quickly and easilyAir blowers mixing eductors filters clean-ing guns and lances hose reels steam heaters pressure tanks quick couplings to help you build up a professional system upgraded to the latest standards

Tank washing systemsA complete range from simple fixed washing heads to the two-axis heads from mushroom nozzles to fluid driven reaction heads up to the motor driven washing heads equipped with a pneu-matic or electric motorAll for the inside cleaning of industrial tanks according to the latest technology accessories included

Spray nozzles for industrial applicationsOne of the world most complete lines of nozzles for numberless industrial appli-cations Nozzles with a wide openings range various types of vanes several spray patterns anti-clog design available in small and big dimensions and made in many food-grade materials like PFTE and Stainless Steel 316L with threaded and flanged connections

Air assisted atomizersUltrasonic classic and automatic atomiz-ers for the finest atomization in any insus-trial process High quality machining and strict quality control ensure your systems top professional resultsProgramming and control panels for an easy assembly of complete humidification systems

CTG SP

CTG PM

CTG SW

CTG LN

Spraydry nozzlesAir assisted or hydraulic high pressure ato-mizers made in high-quality metal alloys or tungsten carbideA complete line of nozzles for the moder-nization of existing facilities at competitive prices To ensure highly accurate results and a long service life these nozzles are manufactured with the finest materials and technologically advanced machines

Paper mill productsA line of products specifically designed for perfect results on paper mill machines including disc nozzles patented for self-cleaning filters flat jet nozzles with orifices in sapphire ruby and ceramic oscillating tubes equipped with a computer driven motor

Steelwork nozzlesA complete line of nozzles for steelwork applications including continuous casting air atomizers and conventional nozzles descaling nozzles for high pressure sys-tems dovetail tips for cylinders cooling and high capacity flanged nozzles for coke quenching

Gas cooling lancesSpillback or air assited lances for gas coo-ling in steelworks cement plants and other industrial applicationsWe can supply spare parts upgrade your plant and even supply a complete PLC driven system to enhance the towers per-formances to the highest efficiency level allowed by today technology

wwwpnr-nozzlescomCTG SH 07 EU

CTG SH 07 EUwwwpnr-nozzlescom

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Page 11: SPRAY CTG SH 07 EU ENGINEERING HANDBOOK

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FULL CONE PATTERN

In a full cone spray the droplets are distributed into a volume which is limited by a cone having its origin point at the nozzle orifice Such spray pattern is commonly used in a large variety of industrial processes since it is the one which allows to distribute in an even way the water flow onto a surface the full cone spray pattern is therefore useful as a typical example to evenly spray cooling liquid on a still surface Another typical use is to distribute liquid droplets within a certain volume like for example evenly distributing water droplets in the inside volume of a cooling tower

Because of the wide number of processes performed by means of full cone nozzles the original shape has evolved into a range of specialised types where the full cone spray pattern or a pattern similar to a full cone one is obtained by different techniques

Standard full cone (turbulence nozzle)These nozzles use a specially shaped vane placed at the nozzle inlet to give a rotational speed to the fluid flowing through the nozzleBecause of the rotational speed of the fluid water exiting the nozzle orifice is subjected to centrifu-gal force and opens up in the shape of a full coneThe extent of the angle of the cone is a function of both exit speed (created from the inlet pressure) and the internal design of the nozzle It can vary in practice from 15deg to 120deg

These nozzles can be also produced as square full cone nozzles where the square shape of the pyramidal spray is obtained by a special design of the outlet orificeTwo important details have to be noted from the system designer when using these type of noz-zles

the spray angle is measured on the side of the square sectionbullthe square section of the spray rotates within the distance from the nozzle orifice to the bulltarget area

Spiral full cone (deflection nozzle)This is not properly a full cone but rather a continuous liquid curtain evolving with the shape of a spiral inside a conical volume The disadvantage of a scarcely even distribution is compensated by an exceptionally good resistance to plugging which makes this nozzle the best choice in those applications where safety or system reliability are the prime concern eg fire fighting systems

Multiple full cone (turbulence nozzle air atomizer)This spray pattern is used in two cases that is

1 When a wide spray angle is to be reached with nozzles which inherently can only produce a narrow one or in such cases where small size droplets and rather high capacities are required Therefore several nozzles are grouped in a cluster with different spray directions the resulting spray pattern occurs from the additional group of single nozzle sprays and the droplet size of the spray remains the same as one of single nozzle It must be noted that a smaller nozzle will normally make smaller drops as compared to a larger size nozzle of the same type operating under the same conditions

2 When it is necessary to obtain a wide angle jet using nozzles which inherently deliver a lim-ited angle spray In the case of a wide angle air atomizer for example the droplet distribution is obviously not homogeneous and the result is rather a number of small angle sprays with different directions but still the liquid is atomized towards all the parts of the volume to be treated

LIQUID SPRAY AND SPRAY NOZZLES Spray nozzle types

Standard full cone

Spiral full cone

Multiple full cone

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FLAT JET SPRAY PATTERN

In a flat jet spray the liquid droplets are sprayed in the shape of a flat liquid layer with different thickness according to the principle used to generate the spray A flat jet spray nozzle serves the purpose of spraying onto a surface or an object moving in a transverse direction with respect to the one of the jet surface a typical example being the nozzles in a car washing tunnel The vast majority of flat spray nozzles used in the industry work according to one of the following principles

In line flat jet (pressure nozzle)This is the general purpose flat jet nozzle where the liquid enters the nozzle in line with the axis length and is fed to a pressure chamber from where it is ejected through the nozzle orifice Flow value and spray angle are determined respectively from the orifice cross section and the orifice edge profile

In line straight jet (pressure nozzle)These nozzles can be considered a special kind of flat jet nozzle with naught degree spray angle They are designed to produce a sharp stable stream with powerful impact on a given point and serve normally to perform cleaning processes or to cut soft materials

Spoon flat jet (deflection nozzle)In this type of nozzle the liquid is fed under pressure to a round outlet orifice and then deflected onto a smooth profiled surface so as to assume a flat jet shape This sophisticated design is of advantage since it offers a stronger jet impact using the same feed pressureHigher efficiency comes from the very little energy required to just change the direction of the liquid flow this being the only energy required to generate the flat jet

HOLLOW CONE SPRAY PATTERN

A hollow cone spray pattern consists of droplets concentrated onto the outer surface of a conical shape volume with no droplets contained in the inside of the conical jet shape These nozzles are normally used for smoke washing or gas cooling applications in several industrial processes

Hollow cone (turbulence nozzle)These nozzles use a tangential injection of liquid into a whirling chamber to generate centrifugal forces which break up the liquid vein as soon as it leaves the orifice Precisely designed orifice profiles making use of the Coanda effect provides the ability to obtain very large spray angles

Hollow cone (deflection nozzle)A hollow cone can also be obtained taking a liquid flow to change direction onto a properly designed surface in order to break the liquid into droplets and distributing them as a hollow cone spray patternThis kind of nozzle is mainly used for applications in dust control and fire fighting systems

LIQUID SPRAY AND SPRAY NOZZLES Spray nozzle typesLI

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PNR CODING SYSTEM

As any other industrial product spray nozzles need to be precisely identified by means of a code in order to avoid mistakesPNR coding system has been designed with the following requirements in mind

Codes must be easily processed by a computer in ascending orderbullCodes must describe completely the product without any need for additional descriptionbullCodes must show to the user the basic specifications of the nozzle in order to ease the search in the cataloguebull

We have therefore determined our coding system described as follows

LIQUID SPRAY AND SPRAY NOZZLES Spray nozzle coding

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AA U X YB312 305

Thread type or other connection

Special features

Nozzle material code (see below)

The three digits give the nozzle capacity in lpm at 3 bar according to rank value

Rank of flow value see table below

Nozzle spray angle see table below

Nozzle type as described in the catalogue pages shown in ascending order

Nozzle tables report on a blue background the nominal flow value measured at 30 barFlow values at different pressures have been calculated

These codes serve as an indication onlyBased on different types of nozzles their significance can occasionally be different

CAPACITY RANK

Rank Flow digits Actual flow (lmin)

0 0 490 049

1 1 490 490

2 2 490 490

3 3 490 490

4 4 490 4900

SOME SPRAY ANGLE CODES (DEGREES)

A = 0 L = 40 T = 80

B = 15 M = 45 U = 90

C = 20 N = 50 J = 110

D = 25 Q = 60 W = 120

F = 30 R = 65 Y = 130

H = 35 S = 75 Z = 180

A1 Carbon steel D6 Glassfibre reinforced PP L2 Incolloy 825

A2 High speed steel D7 High density polyethilene L8 Hastelloy C276

A8 Zinc coated steel D8 Polyvinylidenefluoride (PVDF) P6 Acr But Styrene (ABS)

A9 Nickel coated steel E0 EPDM P8 EPDM 40 Shore

B1 AISI 303 Stainless steel E1 Polytetrafluorethylene (PTFE) T1 Brass

B2 AISI 304 Stainless steel E2 PTFE (25 glassfibers) T2 Brass chrome plated

B21 AISI 304 L Stainless steel E31 Acetalic resin (POM) T3 Copper

B3 AISI 316 Stainless steel E7 Viton T5 Bronze

B31 AISI 316 L Stainless steel E8 Synthetic rubber (NBR) T8 Brass nickel plated

C2 AISI 416 Stainless steel hardened F5 Ceramic T81 Brass electroless nickel plated

D1 Polyvinylchloride (PVC) F31 Ruby insert 303 body V1 Aluminum

D2 Polypropylene (PP) G1 Cast iron V7 Aluminum electroless n plated

d3 Polyamide (PA) H1 Titanium

D5 Talcum filled Polypropylene L1 Monel 400

NOZZLE MATERIAL CODES

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LIQUID SPRAY AND SPRAY NOZZLES Computerized fluid dynamics

The customers demand for an always higher efficiency requires to use not only the best tooling but in addition control instruments and design methods always more sophisticated like for example new software for obtaining the velocity distribution of a fluid flowing through a conduit

These software programs require that the geometry of the inner con-duit to be geometrically defined and in addition the process conditions ( pressure temperature fluid capacity ) and the fluid properties ( specific weight viscosity ) to be Introduced

Based on the above data it is pos-sible to obtain a very precise dis-tribution for the velocity value in each single point of the conduit both under numeric form and flow diagramsThese Information make it possi-ble as an example to minimize the flow turbulence and consequently to Increase the nozzle efficiency through an increase in the fluid exit velocityThis is of basic Importance for some kind of nozzles for example those nozzles required to supply an high impact jet when performing descal-ing processes in a rolling millBy trial and error it is also possible to eliminate problems like jet Instability or cavitation

The overall process efficiency in the flow path before the nozzle can also be considered which often results into the design of geometry modifi-cation or the Introduction of special flow improving profiles along the conduit

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The diagram on the right shows the idealization of the process generating the droplets while the water jet exiting the nozzle is breaking up The theoretical model whose exactitude seems to be confirmed by scientific research considers that the liquid flowing through the nozzle and past the orifice edge evolves into a liquid lamina This lamina because of instability induced by aerodynamic forces breaks up first into elongated ligaments more or less cylindrical and later into droplets

Taking the above process as a guideline one can easily appreciate that the average droplet diameter is some what related to several factors like

1 The thickness of the lamina itself2 The evenness of the lamina 3 A steady flow and break up process

For what has been said above and limited to hydraulic nozzles the system designer looking for fine droplet sprays should consider that the following results can be expected

Impact nozzles best

Centrifugal hollow cone nozzles multiple full cone nozzles good

Turbulence nozzles fair

Centrifugal Vaneless full cones worst

The above choice is obviously based on the droplet generation process which changes from one nozzle type to another and allows to forecast which type is best fro the applicationAn additional consideration of interest is that the expected droplet size changes for the same type of nozzle with the nozzle size it is possible to generate smaller drops spraying the same water quantity at the same pressure using a greater number of smaller nozzles

In cases where energy requirements are not a problem or where a specified small droplet diameter is required the smal-lest droplets can be obtained by means of an air assisted atomizerHere the shear action of a high speed compressed air flow is used with several different techniques to obtain a value for SMD (Sauter Mean Diameter) of 50 microns and less

LIQUID SPRAY AND SPRAY NOZZLES Spray generation

Theoretical Mechanism of droplet generation

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SLIQUID SPRAY AND SPRAY NOZZLES Droplet spectrum

The atomization of a liquid by means of a compressible fluid like air steam or a gas is defined pneumatic two-phase or twin-fluid atomization Many industrial processes require the availability of finely atomized droplets and the techniques to produce atomized jets have been largely improved in the recent years In addition more sophisticated process techniques have incre-ased the demand for a precise definition about the characteristics of the spray and are now available to the design engineer Since many years PNR can supply upon request complete documentation containing test reports about the more interesting and additional information which are described below for all PNR products

Laser Interpherometer Test (By Pdpa)

PNR droplet size test reports are performed by means of a Laser Interpherometer (Phase Doppler Particle Analyzer) where two laser beams cross in a given point of the spray and define a test probe area Droplet flying through the probe area cause a light scatter which is picked up by the instrument receiver and processed through a computer in order to obtain relevant information about the spray characteristics

Report information

Report information is made of data printed on three pages where the first page contains the most interesting data which make possible to base process calculations upon precise data about spraying degrees process efficiency and jet behavior in operational ambiance These pages contain the Sauter Mean Diameter value whose knowledge is of special importance in heat exchange calculations about evaporative gas cooling processes since it gives the possibility of evaluating the exchange surface obtained by atomizing for a given liquid volume

The upper picture at page 18 referring to atomizing water by means compressed air shows two following histograms

bull Distribution curve of droplet diameter (micron)

bull Distribution curve of droplet velocities (mps)

and the below described values

bull Arithmetic Mean Diameter (D10)

bull Surface Mean Diameter (D20)

bull Volume Mean Diameter (D30)

bull Sauter Mean Diameter (D32)

ARITHMETIC MEAN DIAMETERThis is a diameter value which multiplied by the local num-ber of droplets in the sample equals the addition of alI droplets diameters

SURFACE MEAN DIAMETERThis is the diameter of such a droplet whose surface mul-tiplied by the total droplets number equals the sum of alI droplets surfaces

VOLUME MEAN DIAMETERThis is the diameter of such a droplet whose volume mul-tiplied by the total droplets number equals the sum of all droplets volumes

SAUTER MEAN DIAMETERThis is the diameter of such a droplet whose volumearea ratio equals the ratio between the sum of alI droplet volu-mes divided by the sum of alI droplet surfaces

D10 = Σ i ni di

Σ i ni

D20 = Σ i ni di

2

Σ i ni

D30 = Σ i ni di

3

Σ i ni

D32 = Σ i ni di

3

Σ i di

2

3

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AttemptsDroplet number crossing probe area during test time This includes both validated and not validated droplet

Correct Count Criteria A mathematic correction is applied to validate droplets which cross Probe Area in a peripheral belt or to droplets without a perfect spherical shape so that alI validated droplets parameters are homogeneous (This correction is necessary so that there is direct proportionally between laser beam phase and droplet number diameter)

Number Density It is the number of droplets passing through probe area within test time

Probe areaThis is the area where the two laser beams are crossing so determining the probe area AlI droplets intersecting probe area are checked droplets which respect given parameters for shape are taken as valid droplets and make up the sample whose size and velocity parameters are reported

ValidationsDroplets accepted based on given shape parameters to make up for test sample

Velocity MeanDroplets distribution speed histogram (ms)

Volume Flow RateIt is the volume measured in cubic centimeter per second of the validated droplets making up for the sample

Volume FluxIt is the flow rate per specific area measured in cubic centimeter per second and square centimeter of the validated droplets making up the sample

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LIQUID SPRAY AND SPRAY NOZZLES Droplet spectrum

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SLIQUID SPRAY AND SPRAY NOZZLES Droplet spectrum

PNR can supply upon request complete documentation con-taining test reports about the aforementioned parameters and additional information for all PNR atomizersThe diagrams beside show the distribution of droplet diameters and droplet velocities of a spray under test as available to our customers

In the photo beside a test being performed at our laboratoriesWe use a computer driven laser interpherometer to detect and record the spray parameters while fluid capacities and feed pressure values are monitored through high precision instru-ments

IMPORTANT NOTE

The droplet size values measured with a PDPA instrumentation are representative of a well specified volume inside the spray and taking measurements in a different volume they can be considerably differentA correct spray droplet size characterization requires then not only tests being performed in several volumes within the spray but also that those measure volumes are selected with regard to the process the droplets are expected to performAs an example the droplet characterization of a spray should define how many volumes have been tested and which are the coordinates of each single test volume in relation to the nozzle orifice

Most of the times pretending to describe the droplet spectrum of a spray nozzle at a given pressure with only one diagram is therefore not correct

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In order to calculate the discharge flow rate from a given nozzle the Bernoulli law shall be used which says that the energy of a liquid flow remains unchanged over alI the sections of the flow Friction and turbu-lence losses are neglected which is reasonable for our purposes if the cal-culation is performed over two sections not too far away from each other

The Bernoulli law can be written as follows

Therefore if we consider two sections of the same pipe section A and section B we can write that the flow energy remains constant in the form

If we finally consider that the two above sections are taken immediately before and immediately after the nozzle outlet orifice being

ZA = ZB PB = 0 (PA is a differential pressure referred at the atmosphere pressure)

VA cong 0 negligible as compared to VB (for orifice diameter much smaller than the duct diameter)

we shall come to the formula

When we define a new constant k to include the value of the nozzle orifice outlet area (A) then we come to the following equation which says that for a nozzle spraying into a room at ambient pressure the exiting flow is proportional to the feed line pressure

Considering now two different pressure values for the same nozzle since k is a constant quantity we can write that

and derive from the above an equation that makes it possible to calculate the nozzle flow value at any given pressure value once the flow value at another pressure value is known

The energy of a given liquid flow crossing a given pipe section is composed of three parts namely

P Pressure energy of liquid particle per volume unit

1 ρV2 Kinetic energy of liquid particle per volume unit2ρgz Potential Energy of liquid particle per volume unit

Where ρ = density of liquid g = gravitational acceleration

z = height respect to one plane of reference V = liquid velocity

PA = 1 ρVB 2 rArr

2

K = Q rArr

PK =

Q1 = Q2 rArr

P1 P2

Q = A V rArr

Q = A x C x P rArr

1 P + 1 ρV2 + ρgz = E

2

VB = 2 PA rArr ρ

Q1 = P1

Q2 P2

3 V = C P

4 Q = K P

2 PA + 1 ρVA 2 + ρgzA = PB + 1 ρVB

2 + ρgzB 2 2

EXIT VELOCITY DEPENDS UPON PRESSURE

NOZZLE CAPACITY DEPENDS UPON PRESSURE

NOZZLE CAPACITYAT A DIFFERENT PRESSURE

5 Q2 = Q1 P2

P1

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LIQUID SPRAY AND SPRAY NOZZLES Nozzle flow rate

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SLIQUID SPRAY AND SPRAY NOZZLES Nozzle flow rate

The Equation (5) has been obtained after having simplified the real problem neglecting several factors like for examplebullInmostofthepracticalapplicationcasestheflowisturbulentandnotlaminarbullFrictionlossestendtostronglyincreasewithliquidvelocitybullDependinguponthetypeofnozzleadifferentpercentageoftheavailableenergyisusedtobreakupthejetandgivethe

desired spray pattern and spray angle

For the above reason equation (5) gives reliable results if used in a limited pressure range around the pressure value where the flow rate is known with this pressure range depending upon the type of nozzleOur experience has shown that one can expect the error in the calculated value to be lower than +- 6 for pressure values ranging from 13 to 3 times the reference value

As an example a nozzle rated for 10 lpm at 3 bars would have according to equation (5) the following flow valuesa 1 bar 577 lpma 9 bar 173 lpmin real conditions it can be expected the flow rate values to beas high as 61 lpm a 1 baras low as 162 lpm a 9 barAbove considerations are to be used as a guideline only because of the many factors influencing real operations which have not been considered here for example liquid temperature viscosity and density

Possible percentage deviation from theoretical flow rate values

Also above mentioned percentage errors have to be understood for nozzles using part of the flow energy to produce wide angle spray patternsLower values can be expected for narrow angle nozzles impact nozzles and straight jet nozzles Laboratory tests and diagrams showing real flow rate values for each nozzles are used in practice when a precise result must be available

Nozzle discharge coefficient

With reference to equation (4) if we consider the pressure value to be equal to 1 (P = 1 bar) the flow rate of the nozzle becomes

K is a parameter widely used in the fire fighting industry

In some instances reference is made to the nozzle discharge coefficient or shortly to the nozzle coefficient to indicate the nozzle flow rate for a unitary pressure Of course for a given pressure value Pn the flow value will be

+ 6

+ 3

- 3

- 6

CAPACITY AT A GIVEN PRESSURE VALUEWHEN K KHOWN

NOZZLE CAPACITYFOR P=1 barQ = K P = K 1 = K

6 Qn = K Pn

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The spray angle is the opening angle which the nozzle jet of droplets forms at the moment when it leaves the nozzle orifice and it is one of the fundamental parameters for the choice of a given nozzleIn fact the amplitude of the spray angle determines in connection with the distance between the nozzle orifice and the target to be covered the spray coverage and the density of liquid sprayed with respect to the cover area See our Catalogue for description of the different nozzle spray patterns The table at the bottom of the page gives the theoretical spray width based on the nozzle spray angle and the distance from the nozzle orifice It is important to note that because of several factors like gravity forces and aerodynamic drag the spray angle value cannot be maintained but in in a limited distance normally up to 300 mm from the orifice For air assisted atomizers it is improper to use the term spray angle since no precise value can be measured Therefore the values given by Catalogues are to be intended as guidelines only

THEORETICAL SPRAY COVERAGE

at various distances from nozzle orifice

Spray 50 100 150 200 250 300 400 500 600 700 800 1000 Angle mm mm mm mm mm mm mm mm mm mm mm mm

15deg 13 26 40 53 66 79 105 132 158 184 211 263 25deg 22 44 67 89 111 133 177 222 266 310 355 443 30deg 27 54 80 107 134 161 214 268 322 375 429 536 35deg 32 63 95 126 158 189 252 315 378 441 505 631 40deg 36 73 109 146 182 218 291 364 437 510 582 728 45deg 41 83 124 166 207 249 331 414 497 580 663 828 50deg 47 93 140 187 233 280 373 466 560 653 746 933 60deg 58 116 173 231 289 346 462 577 693 808 924 1150 65deg 64 127 191 255 319 382 510 637 765 892 1020 1270 70deg 70 140 210 280 350 420 560 700 840 980 1120 1400 75deg 77 154 230 307 384 460 614 767 921 1070 1230 1530 80deg 84 168 252 336 420 504 671 839 1010 1180 1340 1680 90deg 100 200 300 400 500 600 800 1000 1200 1400 1600 2000 95deg 109 218 327 437 546 655 873 1090 1310 1530 1750 2180 100deg 119 238 358 477 596 715 953 1190 1430 1670 1910 2380 110deg 143 286 429 571 714 857 1140 1430 1710 2000 2290 2856 120deg 173 346 520 693 866 1040 1390 1730 2080 2430 2771 3464 130deg 215 429 643 858 1070 1290 1720 2150 2570 3002 3431 4289

WhereASCbull = Actual Spray CoverageTSCbull = Theoretical Spray CoverageASAbull = Actual Spray AngleTSAbull = Theoretical Spray AngleL bull = Spray Distances

TSC = 2 middot L middot ctan ( TSA )2

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SLIQUID SPRAY AND SPRAY NOZZLES Spray angle

Depending upon the nozzle design variations of feed pressure may have a great influence on the spray angle valueGenerally with increasing pressure turbulence full cone nozzles will produce narrower angles flat jet nozzles will show a wider angle spray while nozzles working on the deflection principle like spiral nozzles and K style flat jet nozzles will be less affected by pressure changesAll nozzles will not function properly with very low pressure values (from 05 bar down depending upon nozzle type ) with a marked decay in performance larger drops not well defined spray pattern lower spray angle values

The above pictures show spray angles for different nozzles and different pressure valuesShould your application strictly require that a given value of the spray angle is obtained under a given pressure value or pressure range of values please obtain a test report from our laboratories

Full cone nozze DDW 2235

Flat jet nozzleJCW 2245

Spiral nozzeECW 2230

Pressure 05 bar Pressure 05 bar Pressure 05 bar

Pressure 3 bar Pressure 3 bar Pressure 3 bar

Pressure 10 bar Pressure 10 bar Pressure 10 bar

Photo obtained with 120000s flashlight

picture 1

picture 4

picture 7

picture 2

picture 5

picture 8

picture 3

picture 6

picture 9

NotePicture 2 shows clearly the droplet generation mechanism as described at page 15

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Terms and definitions

A very important characteristic of a spray nozzle is a parameter called Spray Distribution which gives a precise information about how evenly the drops of the spray are distributed onto the area covered by the sprayIt is self understood that normally it is preferable to obtain the most even distribution possibleIn the past this was done through the visual examination of a diagram reporting the quantity of water contained for example in glass pipes aligned onto the spray coverage areaPnr has determined to obtain such a result in a scientific way through high technology instrumentation as shown in the pictures below showing one of our patternators and a typical distribution diagram

Now to the spray geometry and some definition letrsquos consider a nozzle with a capa-city Q at the pressure PAt every value for distance H which we call height of spray we can define a plane lsquonrsquo normal to the nozzle axis on which a line can define the intersection of the spray onto the planeThe area covered by the spray on the plane lsquonrsquo has a surface S depending from the following parametersa) Spray pattern Fb) Opening angle of the spray αc) Height of the spray H

We can then write S=S( F α H )

In case of a full cone nozzle S is a circle with diameter C and S = 0785 C2

The capacity of the nozzle flows through the surface S but each smaller area inside the surface S will probably have a different value for the flow passing through itWe introduce then the value of Specific Capacity q

1) Specific Capacity

The function q depends upon the single point (xy) in the section S and then

Determining the function q is however very expensive therefore in practice two different functions are used which give in most occurrences sufficient information

2) Linear Distribution

3) Angular distribution

part Qpart x

qx =

Diagram 1

q = limΔS 0

ΔQΔS

q = = f (x y H)part Qpart S

part Qpart φ

qφ =

ΔQ is the liquid flowing through a surface ΔSwhere ΔS is a fraction of the surface S

x and y are the local coordinates in the section planewhere H is the distance of the test surface from the nozzle orifice

partQ is the variation in capacitywhere partx is the variation of a generic linear coordinate

partQ is the variation in capacitywhere partφ is the variation of a generic angular coordinate

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LIQUID SPRAY AND SPRAY NOZZLES Spray Distribution

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LIQUID SPRAY AND SPRAY NOZZLES Spray Distribution

Values extracted from these functions can characterize the spray and allow for drawing the diagrams defined as Distribution Curves

Analyzing the above curves it is possible to determine the type of water distribution along the spray coverage and the type of spray pattern like for example a full cone hollow cone flat or straight jet spray

Distribution measurement

The water distribution along the spray coverage is determined by means of an instrument called Patternator

A patternator consists of the following parts 1) Liquid collector2) Cell block3) Measure block4) Unloading block

The nozzle is above the instrument and it is orienta-ted in such a way the jet is collected into the upper liquid collectorThe liquid collector can be linear ( diagram 5 ) or round ( diagram 6 ) according to the test being runFrom the single parts in the collector the liquid is sent into the corresponding cells below (2)

The Measure block (3) determines the liquid content in each single cell then the unloading block (4) empties the instrument sending the liquid to the collection drain

There are two types of patternators

Analogic1 the different levels of liquid is visible through the transparent walls of the cells or pipes sometimes containing some kind of floating balls and a picture can be taken with a cameraDigital2 Delivering an automatic reading of the values in the cells the values being supplied as an electronic file from which a distribution curve can be easily obtained

Diagram 2 Linear distribution Diagram 3 Angular distribution

Diagram 4

Diagram 6 Circular collectorDiagram 5 Linear collector

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LIQUID SPRAY AND SPRAY NOZZLES Spray Distribution

Normalizing distribution curve

The values obtained from the cells of the patternator showing the water quantity collected in the single cells allow for preparing a Distribution curve which can be given as a single line curve or as a row of vertical barsThese resemble the liquid level collected into the glass pipes of the old type instrumentation

The curves prepared based on the liquid level in the single cells still are not precise they depend in fact from the testing time the longer this time the larger the liquid quantity sprayedTo eliminate the influence of time from the test it is necessary to transform the effective curves to normalized curves

Normalized4) linear distribution

Normalized5) angular distribution

Please note that Maximum value is the one belonging to the series of values measured in the cellsIn addition to the distribution it is possible to normalize the intervals to with the following formulas

Normalized 6) linear interval

Normalized 7) angular interval

The linear normalized amplitude is defined inside an interval [-1 +1]The angular normalized amplitude is defined inside an interval [0+2π]

Diagram 7 Effective linear distribution curve Diagram 8 Effective angular distribution curve

Mx

xx q

q=δ

N

πθ

2=Δ

Diagram 9 Normalized linear distribution curve Diagram 10 Normalized angular distribution curve

qx is the linear distribution of a generic cellwhere qx

M is the maximum linear distribution measured

qφ is the linear distribution of a generic cellwhere qφ

M is the maximum linear distribution measured

2 is the normalized linear amplitude of the spraywhere N is the number of active cells (active cells = cells containing liquid)

2π is the normalized angular amplitude of the spraywhere N is the number of active cells (active cells = cells containing liquid)

Mq

q

ϕ

ϕϕδ =φ

φ

φ

2

N=Δλ

2

N=Δλ

LIQU

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26 wwwpnr-nozzlescom CTG SH 07 EU

Evaluation of spray distribution

To evaluate distribution curves it is necessary to take three properties into consideration

a) UNIFORMITY b) MONOTONY c) SIMMETRY

As described in the following diagrams and definitions

a) UNIFORM A distribution that minimizes the ratio AAdeg

b) MONOTONE Is a distribution with a curve which grows on the left side and decreases on the left side c) SYMMETRIC Is a distribution which minimizes the Ratio A+A-

Based on the above definitions the following curves show the ideal situations

The three properties are then evaluated by means of the following parameters

1 Integral uniformity

2 Incremental uniformity

3 Symmetry index

Complete details about the above formulas and definition can be found in our Technical Bulletin REL 080002 which shall be released from our Technical Department on request

Diagram 12Normalized and monotone distribution

Diagram 11Normalized and monotone distribution

Diagram 14Ideal monotony

Diagram 15Ideal symmetry

Diagram 13Ideal uniformity

1001 sdot=MA

AU

1002

2 sdot=lowastσ

U

1001

sdot⎥⎦

⎤⎢⎣

sdotminus=

lowast

lowast

δ

ε

NI S

sum minus=lowast

M

i iδδε

A is the area included in the normalized curvewhere Adeg is the rest of the area included in the 2x1 rectangle

Left side is the area -1 0where Right side is the area 0 +1

A+ is the area included below the curve on the right sidewhere A- is the area included below the curve on the left side

where

where δrsquo is the value of normalized liquid content in the symmetric cell N number of cells containing liquid in half of the diagram

lowast

lowast sum=

N

N

i i

δ

δ N Number of cells containing liquid

A area included below the curve AM area included below the ideal curvewhere

sum minus= +lowast

1

N

i ii δδσ

N Number of cells containing liquid

LIQU

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SLIQUID SPRAY AND SPRAY NOZZLES Spray Distribution

27wwwpnr-nozzlescomCTG SH 07 EU

Liquids are characterized for their property of undergoing continuous deformation when subjected to shear stress The property of fluids (liquids or gases) to resist flowing due to the existence of internal friction within the fluid is called visco-sity

Thus if we imagine the different layers of fluid sliding one over the other with friction we can imagine that viscosity is defined the force required to move a unit area of fluid for a unit distance Viscosity is measured with many different systems among which the most used are the following

The following table shows correspondences between the most used viscosity units

The viscosity value of a liquid depends upon the temperature therefore the viscosity value must always be given with reference to a temperature value The viscosity of water (20deg C) is 1 Centipoise and 1 Centistoke since water mass density = 1

KINEMATIC SAYBOLT SAYBOLT ENGLER VISCOSITY UNIVERSAL FUROL

Centistoke Sq feetsec SSU SSF Degrees

100 000001076 310 --- 100

500 000005382 424 --- 137

1000 00001076 588 --- 183

1566 00001686 80 --- 245

2052 00002209 100 --- 302

2515 00002707 120 --- 357

4295 00004623 200 --- 592

1080 0001163 500 523 1460

1510 0001625 700 720 2044

1942 0002090 900 921 2628

3023 0003254 1400 143 4090

3885 0004182 1800 183 5260

5394 0005806 2500 254 7300

10788 001161 5000 509 146

15103 001626 7000 712 204

19419 002092 9000 916 263

32365 003483 15000 1526 438

METHOD UNIT DIMENSIONS NOTES

1 Dynamic viscosity(Absolute viscosity) Poise ML T-1 Poise = 100 Centipoises = (1 dyne per seccm2)

2 Kinematic viscosity Stoke L2 T-1 1 Stoke = 100 Centistoke = (cm2sec)Kinematic viscosity = Dynamic viscositydensity

3 SSUSSF

One of the most widely instruments to determine is the Saybolt viscosimeter which measures the time in seconds required for a fixed volume of a given liquid to flow through an orificeSSU = Seconds Saybolt Universal relates to a smaller orifice for less viscous liquidsSSF = Seconds Saybolt Furol relates to a larger orifice for more viscous liquids

LIQUID SPRAY AND SPRAY NOZZLES Influence of liquid viscosity

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28 wwwpnr-nozzlescom CTG SH 07 EU

Viscosity influence on nozzle flow rate

AlI nozzle Catalogue data refer to spraying water (water cinematic viscosity is equal to 1 Centistoke)A liquid with viscosity higher than water will require more energy to be pumped and sprayed and will flow with lower velocity at the same pressure and this will cause a reduction in the turbulence of the flow For the above reason nozzles working on the turbulence principle like normal full cone nozzles and whirl hollow cone nozzles will show an increase in capacity while spraying liquids with viscosity higher than water This increase is very consistent for small size nozzles where the small radius of the whirl chamber tends to cause high turbu-lence in the flow and tends to diminish and to disappear for nominal capacity valves (capacity values at 3 bar) larger than 15 liters per minute

The graph below shows for a liquid with a viscosity of about 4 Centistokes typical variations in the nozzle flow rate value for different values of the nozzle whirl chamber diameter As it may be seen these variations can be neglected in most practical applications where nozzles with whirl chamber diameters well over 3 mm are used

For other types of nozzles not working on the turbulence principle the increase on viscosity will simply reduce the liquid exit velocity at the orifice thus causing a decrease in capacity Experience shows that this decrease ranges between 3 and 6 of nominal water capacity that is to say that the variation introduced is in the same order of magnitude as the nozzle flow rate toler-ance

Viscosity influence on nozzle spray angle and spray pattern

With reference to the theory of jet break-up and droplet information it can be easily imagined that spraying a liquid more viscous than water is a difficult task

Al the properties of the spray tend to worsen therefore one can expectA higher value for the minimum operating pressure that is the pressure value which allows for obtaining a well defined 1 spray with the expected spray angle A worse spray distribution since the viscous behavior of the liquid makes it more difficult to pro-duce fine droplets and 2 to distribute them evenly with the desired spray pattern A narrower spray angle It is difficult to give guidelines since results on different nozzles at different pressures and with 3 different liquids are scarcely predictableHowever our experience shows that in many cases the use of impact nozzles can give acceptable results where all other type of nozzle failsA laboratory test or a field test are stili the safest way to obtain sound results

50

45

40

35

30

25

20

15

10

5

0 2 3 4 5 6 7 8 9

Increase Flow rate vs Whirl Chamber Diameter

Incr

ease

Flo

w R

ate

[mm

]

Whirl Chamber Diameter [mm]

LIQUID SPRAY AND SPRAY NOZZLES Influence of liquid viscosityLI

QUID

SPR

AYAN

D SP

RAY

NOZZ

LES

29wwwpnr-nozzlescomCTG SH 07 EU

With reference to the Bernoulli Rule as exposed in page 6 one can say that the pressure energy of the liquid flow at the nozzle inlet is transformed totally (minus some losses due to friction inside the nozzle) into liquid velocity at the nozzle orificeCatalogue figures give nozzle capacities when spraying waterIf the specific gravity or density of the liquid is different from that of water the available pressure energy will produce a different liquid velocity at the nozzle orificesIn other words a given quantity of energy will spray always the same quantity of liquid mass but different volumes (flow rates) according to the liquid specific gravity or density

Therefore a liquid heavier than water will exit the nozzle with a lower velocity at lower flow rate while to the contrary a liquid lighter than water will be sprayed at higher velocity at higher flow rate

The following formula is to be applied

The table below gives the value of a correction factor to obtain the flow rate of a liquid with different specific weight as water

WhereQL Liquid flow rateQW Water flow rateF Correction factor

kgliter Libregallon F

06 50 129

07 58 120

08 67 112

09 75 105

10 83 100

11 92 095

12 100 091

13 109 088

14 117 085

15 125 082

16 134 079

17 142 077

18 150 075

19 159 073

20 167 071

QL = F QW8

LIQUID SPRAY AND SPRAY NOZZLES Influence of liquid specific gravity

LIQU

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30 wwwpnr-nozzlescom CTG SH 07 EU

The spraying water impact of a nozzle depends on several factors and more precisely spray distribution pattern and spray angle The first step to calculate the impact value which is usually expressed in Kilograms per square centimeter is to deter-mine Total Theoretical lmpact Value using the following formula

The obtained value has to be multiplied by the Total Theoretical Impact per Square Centimeter Coefficient (E)The final value is the Spraying Liquid Impact expressed in kgpcm2Of course not alI the energy of the fluid vein is transferred to the impact point

A part of this energy sometimes a considerable part goes to obtain a desired spraying angle by having the liquid vein acquire a high rotational speed inside the whirl chamber The highest value of impact is obtained with straight jet nozzle and the value can be calculated multiplying spraying pressure per 19The tables below containing the Total Theoretical Impact sqcm coefficient values for different spray pattern nozzles for a dis-tance of 300 mm

[kgpcm2]

TOTAL THEORETICAL IMPACT PER SQ CM COEFFICIENT AT DISTANCE OF 300 MM (E)

Spray Flat jet nozzle Spray Full cone nozzle Spray Hollow cone nozzle Angle Angle Angle

15deg 0300 15deg 0110 25deg 0180 35deg 0130 30deg 0025 40deg 0120 50deg 0100 50deg 0010 65deg 0070 65deg 0004 60deg80deg 001002 80deg 0050 80deg 0002 100deg 0001

WhereQ is the flow rate at working pressure in lpmP is the pressure value in kgpcm2

[kgpcm2]TTI = 0024 Q P

SLI = E TTI

9

10

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PRAY

AND

SPRA

Y NO

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SLIQUID SPRAY AND SPRAY NOZZLES Jet impact

31wwwpnr-nozzlescomCTG SH 07 EU

Jet impact diagram

A further parameter to characterize the performance of a spray nozzle is the distribution of the jet impact force which could be derived by means of mathematical methods from the values of the spray distribution onto the surface covered by the spray but which can more easily be measured with the help of specifically designed instrumentation

In some applications the jet impact force Is the most important parameter used to realize the required processSteel sheet descaling in a rolling mill is a typical example where the jet impact is required to take away the surface scale and obtain a perfectly even surfaceFor that reason special nozzles have been developed to perform this very task where service life impact value and spray distribution reach the values required for satisfactory resultThese test are performed in a laboratory equipped with a specifically designed instrumentation where the high pressures involved in these process can be reached which can measure the pressure values along a matrix of points distributed in the spray area covered by the nozzle

These values are supplied both in a table of values and as a 3D pressure diagram similar to those shown below

On such applications where producing high impact values in the jet is necessary it is of paramount importance that the liquid flow turbulence is kept to a minimum and therefore it is widely used to insert into the nozzle entrance devices designed to improve the operating conditions by forcing the liquid flow through straight passages with several different shapes by doing so the impact delivered by the spray is increased with the same feed pressure

One typical shape used by Pnr is shown on the right and the two dia-grams below show the impact force diagrams for the same nozzle with and without a flow straightener the reduction of flow turbulence can lead in increase of impact force often higher than 20Further improvements of course are available when the nozzle inside profile is properly designed in order to avoid sharp cross section changes and all surfaces are finished as smoothly as possible

Typical design of a Pnr flow straightener

Impact pressure diagram with flow straightenerImpact pressure diagram without flow straightener

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LIQUID SPRAY AND SPRAY NOZZLES Jet impact

32 wwwpnr-nozzlescom CTG SH 07 EU

LIQUID SPRAY AND SPRAY NOZZLES Pressure drop through a nozzle

Pressure drop through a nozzle

Some of our customers have asked us In the past which Is the pressure drop through a nozzle since they consider a nozzle one of the parts in a piping like a valve or an elbow which causes a given pressure drop along the line

The reality is different and can be easily understood when considering the Bernoulli formula [2] as given at page 19 of this manual the formula says that the total energy of a liquid flow is made from the addition of three facors

Potential energy due to elevationbullPressure energybullVelocity energybull

When we apply the formula at the entrance and at the outlet ( the orifice ) of a nozzle and we neglect the influence of turbulence losses in between we can easily see that

The potential energy variation can be neglected because of the limited dimensions of the nozzle since the distance bullbetween the nozzle entrance and the nozzle orifice plays no role-The pressure energy variation is important since the liquid pressure value falls abruptly from the pressure inside the feed bullpipe to the ambient pressureThe velocity energy variation is also consistent since the liquid is ejected from the orifice at high speedbull

In other words the pressure energy of the liquid flowing through the orifice is suddenly transformed in liquid drops velocity which is exactly what a nozzle is designed to do

This is shown from equation [3] at page 19 which allows the exit velocity from the nozzle to be calculated from the pressure inside the pipe ( we actually consider the pressure difference between the inside of the pipe and the ambient pressure in this formula )

In other words all the energy still available at the nozzle is converted into velocity or if you so prefer you have a total pressure fall The system designer shall therefore evaluate all the pressure drop between the pump outlet flange and the nozzle entrance in order to be sure that the nozzle feed pressure is sufficient to assure the desired capacity for the liquid being sprayed

parameters valuesat nozzle outlet

nozzle inlet nozzle oulet or orice

feed pressure

inlet velocity

parameters valuesat the nozzle inlet

(A)potential elevation

energy

(A)velocity ( kinetic ) energy

(A)pressure energy

ambient pressure

exit velocity

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The choice of the right material for a nozzle is sometimes the most important one to do since the nozzle operating life depends upon it There are several factors to influence or shorten the nozzle operating life sometimes more than one at the same time the most important being

Wear from solid particles suspended into the liquid being sprayed1 Chemical corrosion from the liquid being sprayed 2 Chemical corrosion from the ambience outside the nozzle3 Exposure to high temperature 4 Exposure to mechanical shocks5

NOZZLE MATERIALSPnr material codes 34Properties of materials 35Mechanical properties of materials 39Chemical resistance of materials 40

NOZZLE MATERIALS

34 wwwpnr-nozzlescom CTG SH 07 EU

PNR has adopted a short code to identify construction materials for nozzles and nozzle partsHere below the most frequenty used materials

MATERIAL STANDARDS

The following standards are mentioned with reference to materials identification

NOZ

ZLE

MAT

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LS

A1 Free Cutting Steel E1 TEFLONreg (PTFE) L3 NICROFERreg 5923

A2 Carbon Steel E3 DELRINreg (POM) L4 STELLITEreg 6

A8 Zinc Plated Mild Steel E6 PERSPEXreg (PMMA) L5 HASTELLOYreg B2

A9 Nickel Plated Mild Steel E7 VITONreg (FPM) L6 HASTELLOYreg C4

B2 AISI 304 Stainless Steel E8 NBR- Sh 70 Rubber L61 HASTELLOYreg C22

B3 AISI 316 Stainless Steel E81 SANTOPRENEreg Rubber L62 ULTIMETreg

B31 AISI 316L Stainless Steel E82 KLINGERITEreg L7 NICKEL 201

B4 AISI 321 Stainless Steel E83 HYPALONreg L8 HASTELLOYreg C276

B8 AISI 309 Stainless Steel E91 Silicon L9 SANICROreg 28 SS

B81 AISI 310 Stainless Steel F12 Tungsten Carbide (TC) N1 AISI 302 Stainless Steel

C1 AISI 420 St Steel hardened F2 PIREXreg P6 ABS

C4 AISI 317 Stainless Steel F3 Rubin P7 FASIT OIL

C6 SAF 2205 Stainless Steel F4 Zapphire P8 EPDM ShA Rubber

D1 Polyvinylchloride (PVC) F5 Ceramic P9 STIROLUXreg 637

D2 Polypropylene (PP) F6 Silicon Carbide (SC) T1 Brass

D3 Polyamide (PA) G1 Cast Iron T3 Copper

D5 Powder Charged PP H1 Titanium T5 Bronze

D6 Fiberglass Charged PP L1 MONEL 400 T8 Nickel Plated Brass

D7 High Density Polyethylene L2 INCOLOYreg 825 V1 Aluminium

D8 Polyvinylidenefluoride (PVDF) L21 INCONELreg 600 V7 Aluminium ENP

STANDARD ORGANIZATION COUNTRY STANDARD CODE

AFNOR Association Franccedilaise de Normalisation France NF

AISI American Iron and Steel Institute USA AISI

ANSI American National Standards Institute USA ANSI

ASTM American Society for Testing and Materials USA ASTM

BSI British Standards Institution UK BS

DIN Deutsches Institut fuumlr Normung Germany DIN

DSIT Dansk StandardsInformation Technology Denmark DS

ISO International Organization for Standardization International ISO

JIS Japanese Institute for Standard Japan JIS

UNI Ente Nazionale di Unificazione Italy UNI

NOTEThe complete list of the Materials Codes may be requested to our Technical Service mentioning release code TGCE CODMAT

NOZZLE MATERIALS PNR material codes

35wwwpnr-nozzlescomCTG SH 07 EU

NOZ

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MAT

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LS

B1 AISI 303 STAINLESS STEEL

Chemical composition CR 1750 NI 850 S 025 Coding correspondence

Type Stainless Steel Austenitic AISI 303

Hardening Not possible BS 303 S 21

Annealing 1050 1100deg C in water DIN Wnr 14305

Welding Possible with precautions Euro X10CrNiS1809

Corrosion properties

Good resistance Atmospheric exposure food substances organic chemicalsLow resistance Chlorides reducing acids and over 800deg C

JIS SUS 303

NF Z6CN 18-09

SIS 2346

UNI XWCrNiS 1809

B3 AISI 316 STAINLESS STEEL

Chemical composition C 005 CR 170 NI 120 MO 225 Coding correspondence

Type Stainless Steel Austenitic AISI 316

Hardening Not possible BS 316 S 21

Annealing 1050 1100deg C in water DIN Wnr 14401

Welding Easy using same steel electrodes Euro X6CrNiMo17122

Corrosion properties

Good resistance Atmosphere great number of salts organic acids foodsLow resistance Solutions of reducing acids temperatures over 500deg C

JIS SUS 316

NF Z6CND 17-11

SIS 2347

UNI X5CrNiMo1712

B31 AISI 316L STAINLESS STEEL

Chemical composition C 003 CR 170 NI 130 MO 225 Coding correspondence

Type Stainless Steel Austenitic AISI 316 L

Hardening Not possible BS 316S12

Annealing 1050 1100deg C in water DIN Wnr 14404

Welding Easy using same steel electrodes Euro X3CrNiMo1810

Corrosion properties

Good resistance Atmosphere great number of salts organic acids foods salt waterLow resistance Solutions of reducing acids temperatures over 500deg C

JIS SUS 316L

NF Z2CND17-12

SIS 2348

UNI X2CrNiMo 1712

NOZZLE MATERIALS Properties of materials

36 wwwpnr-nozzlescom CTG SH 07 EU

C1 AISI 420 STAINLESS STEEL

Chemical composition C 020 CR 1300 Coding correspondence

Type Stainless Steel Martensitic AISI 420

Hardening 980deg - 1030deg C in oil BS 420 S 29

Annealing 750deg - 800deg C in air DIN Wnr 14021

Welding Possible with precautions Euro X20Cr13

Corrosion properties Good resistance Drinkable water steamgasoline oil alcohol ammonia

JIS SUS 420 J1

NF Z20C13

SIS 2303

UNI X20Cr13

C2 AISI 416 STAINLESS STEEL

Chemical composition C 012 CR 1250 S 022 Coding correspondence

Type Stainless Steel Martensitic AISI 416

Hardening 950deg - 1100deg C in oil BS 416 S 21

Annealing 750deg - 800deg C DIN Wnr ---

Welding Not possible Euro X120CrS13

Corrosion properties Good resistance Drinkable water steamgasoline oil alcohol ammonia

JIS SUS 416

NF Z12CF13

SIS ---

UNI X12CrS13

D8 POLYVINYLIDENE FLUORIDE (PVDF)

Description HIGH-MOLECULAR WEIGHT THE TOUGHEST OF THE FLUOROCARBON RESINS

Trade names amp SuppliersKYNAR (Atochem North America Inc formerly Penwalt Corporation)

SOLEF (Solvay Polymer Corporation)

Physical andMechanical Properties

Excellent resistance to abrasion and stress fatigue

Extremely pure opaque white resin

Thermal Properties UsefuI in temperatures ranging from -73 149degC (-100 300degF)Heat deflection temperature is (8090deg C at 182 Bars (176 194deg F at 264 psi)

Chemical Compatibility

Excellent chemical resistanceCan be used with wet or dry halogens most strong acids and bases aliphatics aromaticsalcohols and strong oxidizing agentsNot recommended for contact with ketones esters amines and some organic acids(fuming sulfuric acid)

NOZZLE MATERIALS Properties of materialsN

OZZL

E M

ATER

IALS

37wwwpnr-nozzlescomCTG SH 07 EU

E1 POLYTETRAFLUOROETHYLENE (PTFE)

Description FLUOROPLASTIC THAT HAVE SOME OR ALL OF THEIR HYDROGEN MOLECULESREPLACED BY FLUORINE

Trade names amp Suppliers

TEFLON TFE FEP and PFA (Dupont Polymer Products)

NEOFLON (Daikin)

FLUON (ICI Americas Inc)

SST-2SST-3 (Shamrock Technologies Inc)

Physical andMechanical Properties

Low coefficient

Low adhesiveness

Buona resistenza agli agenti atmosferici

Good weatherabilityLow resistance to creep and wear unless reinforced with glass figravebers which results in superior resistance

Thermal Properties High and low temperature stabilityHeat deflection temperatures range from 4855deg C at 182 bar (118-132deg F at 264 psi)

Chemical CompatibilityChemically inert

Totally insoluble

E3 ACETAL (ACETAL HOMOPOLYMERS AND COPOLYMERS)

Description HIGHLY CRYSTALLINE RESINS BASED ON FORMALDEHYDE POLYMERIZATION TECHNOLOGY

Trade names amp Suppliers

DELRIN (Dupont Polymer Products Corporation)

CELCON (Hoechst Celanese Corporation)

ULTRAFORM (BASF Corporation)

RTP 800 (RTP Corporation)

LUPITAL amp TENAL (Franklin Polymers Inc)

FULTRON 404 (ICI Americas Inc)

Physical andMechanical Properties

High tensile strength rigidity and esilience

High fatigue endurance

Excellent dimensional stability

Low coefficient of friction

Outstanding abrasion and wear resistance

Excellent creep resistance

Thermal Properties Heat deflection temperatures range from 110 -136deg C at 182 bars(230 - 270deg F at 264 psi) higher if glass figravelled

Chemical Compatibility

Remains stable in long-term high temperature water immersionExcellent resistance to chemicals and solvents but prolonged exposure to strong acids not recommendedNote Suitable for close-tolerance high-performance partsAvailable for machined parts or may be injection molded

NOZZLE MATERIALS Properties of materials

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38 wwwpnr-nozzlescom CTG SH 07 EU

L6 HASTELLOY C4

PHYSICAL AND MECHANICAL PROPERTIES CHEMICAL COMPOSITION CORROSION RESISTANCE

R = 650800 Mpa C = 0015 max

Very good against pitting and tensile-corrosion specially in oxydizing atmosphereResistance in welded joints definitely better than C 276 lower than C22

Rp02 = 250470 Mpa Ni = 65

HRB = 90 Cr = 160

Mo = 155

W = --

Fe = 3 max

Ti = 05

Co = 2 max

APPLICATIONSRecommended for applications with strongly oxidizing atmosphere

L61 HASTELLOY C 22

PHYSICAL AND MECHANICAL PROPERTIES CHEMICAL COMPOSITION CORROSION RESISTANCE

R = 700800 Mpa C = 001 max

Excellent performances with oxydizing atmospheres as well as for pitting and tensile-corrosion conditionsVery good resistance in reducing atmospheres and for welded joints

Rp02 = 360420 Mpa Ni = 56

HRB = 93 Cr = 22

Mo = 13

W = 3

Fe = 3

Ti = --

Co = 25 max

APPLICATIONSChemical industry (gas ducts gas washing and treatment systems phosphoric acid production) Heat exchangers pumps chlorination reactors

L8 HASTELLOY C 276

PHYSICAL AND MECHANICAL PROPERTIES CHEMICAL COMPOSITION CORROSION RESISTANCE

R = 600800 Mpa C = 0015 max

Very good in reducing and oxydizing atmospheresVery good against pitting and tensile-corrosionAcceptable resistance in welded jointsIn cast parts excessive segregation not eliminated by thermal treatment of annealing makes it convenient to use C22 or C4 qualitieswhich assure better corrosion resistance and mechanical properties

Rp02 = 300370 Mpa Ni = 57

HRB = 90 Cr = 145165

Mo = 1517

W = frac345

Fe =

V = 035 max

Co = 25 max

APPLICATIONSChemical industry (air ducts scrubbers fans) Paper industry Thermoelectric plants Steel thermal treatments

NOZ

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LSNOZZLE MATERIALS Properties of materials

39wwwpnr-nozzlescomCTG SH 07 EU

MATERIALTENSILE STRENGHT

CORROSION RESISTANCERp 02 R

20degC 800degC 20degC 800degC

(68degF) (1408degF) (68degC) (1408degC)

AISI 302 280 100 680 200

Good sensitive to corrosionbetween grains for slow heatingand cooling in the 450-900deg Crange temperature

AISI 303 280 100 680 200 Discrete

AISI 304304L 270 90 600 100Good especially for 304L304 sensitive to corrosionbetween grains like AISI 302

AISI 309 250 100 640 220 Good Sensitive to corrosion between grains like AISI 302

AISI 310 310 170 650 270Good (gt 304 - 304L)Sensitive to corrosionbetween grains like AISI 302

AISI 316316L 270 110 560 220 Very high especially for 316L

AISI 321 210 100 540 140 Good

AISI 347 280 120 620 200 Good

AISI 416 620 70 750 90

Good in medium corrosive ambient (atmosphere water gasoline alcohol N1-13 foods)Not in high corrosive

BRASS 110-150 --- 360-410 --- Good especially when nickel plated

BRONZE 100-300 --- 200-600 --- Discrete especially with sea water

CAST IRON le 500 V 100-800 V

NICKEL ALLOYS 100-1000 V 300-1300 VVery high also for high temperature To use in the temperaturerange 800-1200deg C

PLASTICS --- --- 20-200 ---

Good also for erosionGenerally they are attackedwith oxidizers like nitric acidhalogens ect

PTFE --- --- 30-40 ---

Very high except for elementarystate of alkaline metalsand to compounds containingfluorine at high temp

DUPLEX STEEL gtAISI 3 gtAISI 3 gtAISI 3 gtAISI 3 Very high also with high temperatureand also for pitting

TITANIUM alloy 195-850 V 300-900 VVery high in oxidizing ambientVery low in reducing ambient and with compounds containing fluorine

Legend Rp 02 = 02 YIELD STRENGHT [MPa]R = ULTIMATE TENSILE STRENGHT [MPa]V = To verify time by time

NOZZLE MATERIALS Mechanical properties of materials

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PIPI

NG

PIPINGPipes data 74Economic pipe sizes 75Pressure drop in clean steel pipes 76Flange dimensions 78Sieve size conversion chart 80

PIPING

74 wwwpnr-nozzlescom CTG SH 07 EU

The following table report the data of pipes according to ANSI B3619 that is one of the most used standards that regulate welded stainless steel pipes

DN NPS OD[mm]

SCHEDULE

5S 10S 40SSTD 80SXS

t m t m t m t m

[mm] [kgm] [mm] [kgm] [mm] [kgm] [mm] [kgm]

6 18 103 NA NA 124 028 173 037 241 048

8 14 137 NA NA 165 050 224 064 302 081

10 38 172 NA NA 165 064 231 086 320 112

15 12 213 165 081 211 101 277 128 373 164

20 34 267 165 103 211 130 287 171 391 223

25 1 334 165 131 277 212 338 254 455 328

32 1frac14 422 165 167 277 273 356 344 485 453

40 1frac12 483 165 192 277 315 368 411 508 549

50 2 603 165 242 277 399 391 551 554 759

65 2frac12 730 211 374 305 534 516 875 701 116

80 3 889 211 458 305 655 549 115 762 155

90 3frac12 1016 211 525 305 752 574 138 808 189

100 4 1143 211 592 305 849 602 163 856 226

125 5 1413 277 960 340 117 655 221 953 314

150 6 1683 277 115 340 140 711 287 1097 432

200 8 2191 277 150 376 202 818 431 1270 656

250 10 2730 340 229 419 282 927 611 1270 827

300 12 3239 396 317 457 365 953 749 1270 988

350 14 3556 396 348 478 419 NA NA NA NA

400 16 4064 419 421 478 480 NA NA NA NA

450 18 457 419 474 478 541 NA NA NA NA

500 20 508 478 602 554 696 NA NA NA NA

550 22 559 478 662 554 767 NA NA NA NA

600 24 610 554 837 635 959 NA NA NA NA

Where

DN = Nominal diameter NPD = Nominal Pipe Size OD = Outside Diameter t = Wall Thickness m = Specific WeightPIPI

NG

PIPING Pipes data

75wwwpnr-nozzlescomCTG SH 07 EU

The following Specific Pressure Drops (Y) are normally used in the good engineering practice(where Y=ΔPL ΔP Pressur Drop and L Pipe Lenght)

For pipe sizing the Velocity (V) is also usedIn the following table are shown the typical liquid velocities in steel pipes

Some fixed pressure drop values indicationsfor gate valves (fully open) consider a pressure drop of 5 metersbullfor normal bends consider a pressure drop of 5 metersbullfor a check valve consider a pressure drop of 15 metersbull

In the succeeding tables we show the velocity and specific pressure drop for several flow rates and pipe diameters

Not boiling waterY = 02divide05 bar100 m for pump discharge (07 bar100 m max if P gt 50 bar)

Y lt 0110 bar100 m for pump suction

Boiling water Y = 004divide005 bar100 m for pump suction (velocity = 03divide09 ms)

LIQUID LINE TYPE

Specific Pressure Dropsvs Velocity [ms]

0 lt V lt 2 3 lt V lt 10 10 lt V lt 20

NOT BOILING WATER

Pump suctionPump discharge (long)Discharge leads (short)Boiler feedDrainsSloped sewer

03 divide 0606 divide 0912 divide 2712 divide 2709 divide 12

-

06 divide 1209 divide 1515 divide 3715 divide 3709 divide 1509 divide 15

09 divide 1812 divide 2124 divide 4224 divide 42

-12 divide 21

HYDROCARBON LIQUIDS(normal viscosity)

Pump suctionDischarge heather (long)Discharge leads (short)Drains

05 divide 0808 divide 1112 divide 2709 divide 12

06 divide 1209 divide 1515 divide 3709 divide 15

09 divide 1812 divide 2124 divide 46

-

MEDIUM VISCOSITY OILPump suctionDischarge (short)Drains

--

03

05 divide 0901 divide 0209 divide 15

08 divide 1501 divide 0312 divide 18

OTHER WATERCooling tower Chilled waterSea water and generally foulingwater (long pipes) ()

06 divide 09 09 divide 15 12 divide 21

Note () In this case Cameron method has to be used with C=1 Y = 005 divide 012 bar100 m for principal manifold Y = 012 divide 023 bar100 m for secondary manifold

PIPI

NG

PIPING Economic pipe sizes

76 wwwpnr-nozzlescom CTG SH 07 EU

18rdquo 14rdquo

1 0350 0370 0200 0090 38rdquo 12rdquo

2 0705 1340 0395 0331 0223 0082 0145 0029 34rdquo

3 1060 2890 0593 0673 0333 0176 0217 0061 0125 0016 1rdquo

4 1410 4940 0788 1150 0444 0291 0290 0101 0167 0027 0110 0010

5 1760 7460 0985 1750 0556 0424 0362 0149 0209 0040 0137 0014

6 1180 2460 0667 0594 0434 0207 0251 0054 0165 0019 114rdquo

8 1580 4060 0892 1020 0579 0351 0335 0091 0219 0033 0126 0009 112rdquo

10 1110 1530 0724 0534 0418 0136 0274 0049 0158 0012 0116 0006

15 1670 3250 1090 1130 0627 0284 0411 0099 0236 0026 0174 0012

20 2rdquo 2230 5600 1450 1900 0836 0481 0549 0168 0315 0043 0233 0021

30 0212 0013 212rdquo 2170 4130 1250 1020 0823 0353 0473 0092 0348 0043

40 0283 0022 0190 0007 2900 7180 1670 1760 1100 0606 0631 0155 0465 0073

50 0354 0032 0237 0012 2090 2700 1370 0911 0789 0233 0581 0108

60 0424 0044 0284 0017 2510 3810 1650 1290 0943 0321 0697 0150

70 0495 0079 0332 0022 3rdquo 2930 5120 1920 1720 111 0434 0814 0199

80 0566 0074 0379 0028 0248 0010 312rdquo 2190 2210 126 0554 0925 0253

90 0636 0093 0427 0035 0279 0013 0209 0006 2470 2770 142 0692 1040 0319

100 0707 0114 0474 0043 0310 0015 0232 0007 4rdquo 2740 3400 158 0843 1160 0392

150 1060 0238 0711 0090 0464 0031 0349 0016 0272 0008 4110 7440 236 181 1740 0828

200 1410 0414 0948 0153 0619 0053 0466 0027 0362 0014 315 314 2330 1450

250 1760 0625 1190 0233 0774 0080 0581 0040 0453 0021 5rdquo 2900 2200

300 2120 0889 1420 0324 0930 0112 0698 0055 0543 0030 0352 0011 3480 3070

350 2470 1190 1660 0438 1080 0150 0815 0074 0634 0040 0411 0014 6rdquo 4070 4160

400 2830 1550 1900 0563 1240 0195 0935 0096 0724 0051 0469 0018 0341 0007 4650 5380

450 3180 1930 2130 0707 1390 0242 1050 0120 0815 0063 0528 0022 0366 0009 5230 6790

500 3540 2380 2370 0867 1550 0298 1170 0147 0902 0076 0587 0027 0407 0011

550 3880 2870 2610 1040 1700 0354 1280 0174 0991 0092 0645 0032 0447 0013

600 4240 3390 2840 1220 1860 0418 1400 0204 1090 0110 0704 0037 0488 0015

650 4590 5560 3080 1420 2010 0486 1510 0239 1180 0127 0762 0043 0529 0017

700 4950 4550 3320 1650 2170 0560 1630 0275 1270 0146 0821 0050 0569 0020

750 5300 5200 3560 1880 2320 0637 1750 0314 1360 0164 0879 0057 0610 0023

800 3790 2130 2480 0721 1860 0354 1450 0185 0936 0064 0651 0025 8rdquo

850 4030 2390 2630 0805 1980 0395 1540 0209 1000 0072 0692 0028 0403 0007

900 2790 0901 2090 0438 1630 0232 1050 0008 0732 0032 0427 0008

950 2940 1000 2210 0486 1720 0258 1120 0087 0773 0036 0451 0010

1000 3100 1110 2320 0534 1810 0284 1170 0096 0814 0039 0474 0011

1100 3410 1290 2560 0643 1990 0341 1290 0116 0895 0047 0522 0012

1200 3720 1 580 2800 0763 2170 0403 1410 0135 0974 0055 0569 0015

1300 3030 0890 2360 0473 1530 0157 1060 0063 0616 0017

1400 3260 1020 2540 0544 1640 0183 1140 0072 0664 0019

1500 3490 1170 2720 0617 176 0208 1220 0083 0712 0022

1600 3720 1330 2890 0697 1880 0234 1300 0093 0758 0025

1700 10rdquo 3950 1490 3080 0784 1990 0260 1380 0104 0806 0028

1800 0546 0010 3260 0875 2110 0290 1470 0116 0854 0032

1900 0575 0012 3440 0965 2230 0323 1550 0129 0901 0034

2000 0606 0012 3617 1060 2340 0356 1630 0143 0946 0037

2200 0667 0015 3980 1280 2580 0429 1790 0172 1050 0045

2400 0727 0017 12rdquo 2820 0507 1950 0200 1140 0053

2600 0788 0021 0563 0009 3050 0589 2110 0234 1230 0061

2800 0848 0023 0606 0010 14rdquo 3280 0676 2280 0268 1330 0070

3000 0909 0026 0649 0011 0532 0007 3520 0773 2440 0306 1420 0080

3500 1060 0035 0760 0015 0620 0009 4110 105 2850 0416 1660 0108

4000 1210 0045 0866 0020 0709 0012 16rdquo 4690 135 3250 0532 1900 0139

4500 1360 0056 0976 0025 0798 0015 0606 0007 3660 0674 2130 0173

5000 1520 0069 1080 0029 0886 0018 0674 0009 4070 0822 2370 0212

6000 1810 0097 1290 0042 1070 0026 0808 0013 18rdquo 4880 1160 2850 0301

7000 2120 0130 1510 0055 1240 0035 0940 0017 0741 0010 5690 1580 3310 0403

8000 2420 0168 1730 0072 1420 0045 1080 0022 0847 0012 6510 2050 3790 0525

9000 2730 0210 1950 0091 1600 0056 1210 0027 0954 0015 4270 0659

10000 3030 0257 2170 0111 1770 0067 1350 0033 1050 0019 4740 0801

Legend Q Water Flow Rate (Lpm) V Velocity (ms) Y Specific Pressure Drops (bar100m)Water at ambient temperature in straight pipe

SPECIfIC PRESSURE DROPS fOR WATER fLOW IN CLEAN STEEL PIPE SCH 10S

Q V Y V Y V Y V Y V Y V Y V Y V Y [lm] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m]

PIPI

NG

77wwwpnr-nozzlescomCTG SH 07 EU

SPECIfIC PRESSURE DROPS fOR WATER fLOW IN CLEAN STEEL PIPE SCH 40S

Legend Q Water Flow Rate (Lpm) V Velocity (ms) Y Specific Pressure Drops (bar100m)Water at ambient temperature in straight pipe

18rdquo 14rdquo

1 0458 0726 0251 0170 38rdquo 12rdquo

2 0918 2590 0501 0600 0272 0136 0170 0044 34rdquo

3 1380 5590 0752 1220 0407 029 0255 0091 0144 0023 1rdquo

4 1840 9570 1000 2090 0543 048 0340 0151 0192 0038 0120 0012

5 2290 14450 1250 3180 0679 070 0425 0223 0241 0057 0150 0017

6 1500 4460 0815 0980 0510 0309 0289 0077 0180 0024 114rdquo

8 2010 7360 1090 1690 0680 0524 0385 0129 0240 0041 0138 0011 112rdquo

10 1360 2520 0850 0798 0481 0193 0300 0061 0172 0015 0127 0008

15 2040 5370 1280 1690 0722 0403 0450 0124 0258 0032 019 0015

20 2rdquo 2720 9240 1700 2840 0962 0683 0600 0210 0344 0054 0254 0026

30 0231 0016 212rdquo 2550 6170 1440 1450 0900 0442 0517 0114 038 0053

40 0308 0027 0216 0010 3400 10720 1920 2500 1200 0758 0689 0193 0507 0091

50 0385 0039 0270 0017 2410 3830 1500 1140 0861 029 0634 0135

60 0462 0055 0324 0023 2890 5410 1800 1610 103 0400 0761 0187

70 0539 0098 0378 0031 3rdquo 3370 7270 2100 2150 1210 0541 0888 0248

80 0616 0092 0432 0039 028 0014 312rdquo 2400 2760 1380 0690 1010 0315

90 0693 0115 0486 0048 0315 0017 0235 0008 2700 3470 1550 0862 1140 0397

100 0770 0141 0540 0059 035 002 0261 0010 4rdquo 3000 4250 1720 1050 1270 0488

150 1150 0295 0810 0125 0524 0042 0392 0021 0304 0011 4500 9300 2580 2260 1900 1030

200 1540 0512 1080 0212 0699 0072 0523 0036 0405 0019 3440 3910 2540 1810

250 1920 0773 1350 0322 0874 0108 0653 0053 0507 0028 5rdquo 3170 2740

300 2310 1100 1620 0449 105 0152 0784 0074 0608 004 0387 0014 3800 3820

350 2690 1470 1890 0606 122 0203 0915 0099 0710 0053 0452 0018 6rdquo 4440 5180

400 3080 1920 2160 0780 14 0264 1050 0128 0811 0068 0516 0023 0375 0009 5070 6690

450 3460 2390 2430 0979 157 0328 1180 0161 0912 0084 0581 0028 0402 0012 5710 8450

500 3850 2950 2700 1200 175 0403 1310 0196 1010 0101 0646 0034 0447 0014

550 4230 3550 2970 1440 192 0479 1440 0232 1110 0122 0710 0041 0491 0016

600 4620 4200 3240 1690 2100 0566 1570 0273 1220 0146 0775 0047 0536 0019

650 5000 6880 3510 1970 2270 0658 1700 0319 1320 0169 0839 0055 0581 0022

700 5390 5630 3780 2280 2450 0759 1830 0368 1420 0194 0904 0063 0625 0025

750 577 6440 4050 2600 2620 0863 1960 042 1520 0218 0968 0072 067 0029

800 4320 2950 2800 0977 2090 0473 1620 0246 1030 0081 0715 0032 8rdquo

850 4590 3310 2970 1090 2220 0528 1720 0277 1100 0091 076 0036 0439 0009

900 3150 1220 2350 0585 1820 0308 1160 0100 0804 0041 0465 001

950 3320 1350 248 0649 1930 0342 1230 0111 0849 0045 0491 0012

1000 3500 1500 261 0714 2030 0377 1290 0122 0894 0049 0516 0013

1100 3850 1750 2870 0860 2230 0452 1420 0147 0983 0059 0568 0015

1200 4200 2140 3140 1020 2430 0534 1550 0172 1070 0069 0620 0018

1300 3400 1190 2640 0627 1680 0200 1160 008 0671 0021

1400 3660 1370 2840 0722 1810 0232 1250 0091 0723 0024

1500 3920 1560 3040 0818 1940 0264 1340 0105 0775 0027

1600 4180 1780 3240 0924 2070 0297 1430 0118 0826 0031

1700 10rdquo 4440 1990 3450 1040 2190 0331 1520 0132 0878 0035

1800 0590 0012 3650 1160 2320 0369 1610 0147 0930 0039

1900 0622 0014 3850 1280 2450 041 1700 0163 0981 0042

2000 0655 0015 40500 1410 2580 0452 1790 0181 1030 0046

2200 0721 0018 4460 1700 2840 0545 1970 0217 1140 0056

2400 0786 0021 12rdquo 3100 0645 2140 0253 1240 0065

2600 0852 0025 0600 001 3360 0749 2320 0296 1340 0076

2800 0917 0028 0646 0012 14rdquo 3610 0859 2500 0339 1450 0087

3000 0983 0032 0692 0013 0573 0008 3870 0982 268 0387 1550 0099

3500 1150 0043 0810 0018 0668 0011 4520 1330 3130 0526 1810 0134

4000 1310 0055 0923 0023 0764 0014 16rdquo 5160 1720 3570 0673 2070 0172

4500 1470 0068 1040 0029 0860 0018 0658 0009 4020 0853 2320 0214

5000 1640 0084 1150 0034 0955 0022 0731 0011 4470 1040 2580 0262

6000 1960 0118 1380 0049 1150 0031 0877 0016 18rdquo 5360 1470 3100 0373

7000 2290 0158 1610 0065 1340 0042 1020 0021 0808 0012 6250 2000 3610 0499

8000 2620 0204 1840 0085 1530 0054 1170 0027 0924 0015 7150 2590 4130 065

9000 2950 0256 2080 0107 1720 0067 1310 0033 1040 0019 4650 0816

10000 3280 0313 2310 0130 1910 0081 1460 0041 1150 0023 5160 0992

Q V Y V P V Y V Y V Y V Y V Y V Y [lm] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m]

PIPI

NG

78 wwwpnr-nozzlescom CTG SH 07 EU

10 75 12 038 4 11 50

15 80 12 044 4 11 55

20 90 14 065 4 11 65

25 100 14 082 4 11 75

32 120 14 117 4 14 90

40 130 14 139 4 14 100

50 140 14 162 4 14 110

65 160 14 214 4 14 130

80 190 16 343 4 18 150

100 210 16 422 4 18 170

125 240 18 611 8 18 200

150 265 18 751 8 18 225

175 295 20 1020 8 18 255

200 320 20 1230 8 18 280

250 375 22 1850 12 18 335

300 440 22 2550 12 22 395

350 490 22 3180 12 22 445

400 540 22 3850 16 22 495

450 595 22 4700 16 22 550

500 645 24 6040 20 22 600

PN 6 (UNI 6091)

ND 6 (DIN 2527) DN Flange Holes

D t W N Oslash a

90 14 063 4 14 60

95 14 071 4 14 65

105 16 101 4 14 75

115 16 122 4 14 85

140 16 180 4 18 100

150 16 209 4 18 110

165 18 287 4 18 125

185 18 365 4 18 145

200 20 461 8 18 160

220 20 565 8 18 180

250 22 812 8 18 210

285 22 1050 8 22 240

315 24 1410 8 22 270

340 24 1620 12 22 295

405 28 2510 12 25 355

460 28 3520 12 25 410

520 30 4820 16 25 470

580 32 6350 16 30 525

640 32 7720 20 30 585

715 34 1020 20 33 650

PN 16 (UNI 6093)

ND 16 (DIN 2527) Dimensions Holes

D t W N Oslash a

ND 10 (DIN 2527) Dimensions Holes

D t W N Oslash a

90 14 063 4 14 60

95 14 071 4 14 65

105 16 101 4 14 75

115 16 122 4 14 85

140 16 180 4 18 100

150 16 209 4 18 110

165 18 287 4 18 125

185 18 365 4 18 145

200 20 461 4 18 160

220 20 565 8 18 180

250 22 812 8 18 210

285 22 1050 8 22 240

315 24 1410 8 22 270

340 24 1650 8 22 295

395 26 2410 12 22 350

445 26 3080 12 22 400

505 26 3960 16 22 460

565 26 4960 16 25 515

615 26 5860 20 25 565

670 28 7530 20 25 620

PN 10 (UNI 6092)

LegendaDN Nominal DiameterD Flange External Diametert Flange ThicknessW Flange WeightN Hole NumberOslash Hole Diametera Hole axis

PIPING Flange dimensionsPI

PIN

G

Blind flanges to DIN 2527

79wwwpnr-nozzlescomCTG SH 07 EU

LegendDN Nominal DiameterD Flange External Diametert Flange ThicknessW Flange WeightN Hole NumberOslash Hole Diametera Hole axis

12rsquorsquo 889 111 08 4 159 603

34rsquorsquo 984 127 09 6 159 698

1rsquorsquo 1079 143 10 4 159 794

114rsquorsquo 1175 159 13 4 159 889

112rsquorsquo 1270 175 14 4 159 984

2rsquorsquo 1524 190 18 4 190 1206

212rsquorsquo 1778 222 32 4 190 1397

3rsquorsquo 1905 238 41 4 190 1524

312rsquorsquo 2159 238 59 8 190 1778

4rsquorsquo 2286 238 77 8 190 1905

5rsquorsquo 2540 238 91 8 222 2159

6rsquorsquo 2794 254 118 8 222 2413

8rsquorsquo 3429 286 204 8 222 2984

10rsquorsquo 4064 302 318 12 254 3619

12rsquorsquo 4826 317 500 12 254 4318

14rsquorsquo 5334 349 600 12 286 4762

16rsquorsquo 5969 365 770 16 286 5397

18rsquorsquo 6350 397 950 16 317 5778

20rsquorsquo 6985 429 1230 20 317 6350

22rsquorsquo 7493 460 1510 20 349 6921

ANSI 150 lb DN Flange Holes

D t W N Oslash a

952 143 10 4 159 667

1175 159 14 4 190 825

1238 175 18 4 190 889

1333 206 27 4 190 984

1556 222 36 4 222 1143

1651 254 45 8 190 1270

190S 286 68 8 222 1492

209S 317 91 8 222 1683

2286 349 132 8 254 1841

2540 349 150 8 254 2000

2794 381 200 8 254 2349

3175 413 277 12 254 2699

3810 476 450 12 286 3302

4445 540 700 16 317 3873

5207 571 103 16 349 4508

5842 603 141 20 349 5143

6477 635 181 20 381 5715

7112 667 228 24 381 6286

7747 698 282 24 413 6858

8382 730 311 24 444 7429

ANSI 400 lb Dimensions Holes

D t W N Oslash a

ANSI 300 lb Dimensions Holes

D t W N Oslash a

952 143 10 4 159 667

1175 159 14 4 190 825

1238 175 18 4 190 889

1333 190 27 4 190 984

1556 206 32 4 220 1143

1651 222 36 8 190 1270

1905 254 54 8 222 1492

2095 286 73 8 222 1683

2286 302 95 8 222 1841

2540 317 122 8 222 2000

2794 349 159 8 222 2349

3175 365 227 12 222 2699

3810 413 370 12 254 3302

4445 476 580 16 286 3873

5207 508 840 16 317 4508

5842 540 1070 20 317 5143

6477 571 1390 20 349 5715

7112 603 3900 24 349 6286

7747 635 2230 24 349 6858

8382 667 2700 24 413 7429

PIPING Flange dimensions

PIPI

NG

flanges to ANSI norms

80 wwwpnr-nozzlescom CTG SH 07 EU

PIPI

NG

Sieves are used both for determining the particle size distribution of a granular material and to filter solid particles in a liquid Normally the sieve is made with a fabric whose characteristic dimensions areL is the Opening Width (free passage)D is the Diameter of the wireP is the Pitch of the wireS is the Thickness of the fabricTo classify particle sizes there is some Sieve Series according to specific standardsthe most known are Tyler Sieve Series US Sieve Series UK Sieve SerieshellipThe Tyler mesh size indicates exactly the number of openings per linear inch of mesh

L[microm]

TYLER Sieve[Mesh No]

ASTM E11 Sieve[Mesh No]

BS 410 Sieve[Mesh No]

DIN 4188 Sieve[mm]

5 2500 2500 0005

10 1250 1250 0010

15 800 800 0015

20 625 635 625 0020

22 0022

25 500 500 500 0025

28 0028

32 na 450 440 0032

36 0036

38 400 400 400

40 0040

45 325 325 350 0045

50 0050

53 270 270 300

56 0056

63 250 230 240 0063

71 0071

75 200 200 200

80 0080

90 170 170 170 0090

100 0100

106 150 140 150

112 0112

125 115 120 120 0125

140 0140

150 100 100 100

160 0160

180 80 80 85 0180

200 0200

In the german standard (DIN norm 4188) the Opening Width (L) is given in millimeters

PIPING Sieve size conversion chartPI

PIN

G

81wwwpnr-nozzlescomCTG SH 07 EU

L[microm]

TYLER Sieve[Mesh No]

ASTM E11 Sieve[Mesh No]

BS 410 Sieve[Mesh No]

DIN 4188 Sieve[mm]

212 65 70 72

250 60 60 60 0250

280 0280

300 48 50 52

315 0315

355 42 45 44 0355

400 0400

425 35 40 36

450 0450

500 32 35 30 0500

560 0560

600 28 30 25

630 0630

710 24 25 22 0710

800 0800

850 20 20 18

900 0900

1000 16 18 16 1000

1120 1120

1180 14 16 14

1250 1250

1400 12 14 12 1400

1600 1600

1700 10 12 10

1800 1800

2000 9 10 8 2000

2240 2240

2360 8 8 7

2500 2500

2800 7 7 6 2800

3150 3150

3350 6 6 5

3550 3550

4000 5 5 4 4000

4500 4500

4750 4 4 35

5000 5000

5600 35 35 3

6700 3 0265 in 1

8000 25 516 in na

Applicable standards areISO 565 (1987) ISO 3310 (1999) ASTM E 11-70 (1995)DIN 4188 (1977) BS 410 (1986) AFNOR NFX11-501 (1987)

Legend Q Water Flow Rate V Velocity P Pressure drop Pressure drop in bar per 100 meters of straight pipe (water at ambient temperature)

PIPING Sieve size conversion chart

PIPI

NG

Besides its main range of nozzles for industrial applications PNR manufactures a wide range of complementary products and systems to optimize the use of spray jets and fluids control in most of the modern industrial processes

PNR PRODUCT RANGE

CTG AC

CTG LS

CTG UG

CTG AZ

Complementary Products andAssembly FittingsA complete line of nipples clamps swivel joints and everything that helps you to assemble align and service your spraying systems quickly and easilyAir blowers mixing eductors filters clean-ing guns and lances hose reels steam heaters pressure tanks quick couplings to help you build up a professional system upgraded to the latest standards

Tank washing systemsA complete range from simple fixed washing heads to the two-axis heads from mushroom nozzles to fluid driven reaction heads up to the motor driven washing heads equipped with a pneu-matic or electric motorAll for the inside cleaning of industrial tanks according to the latest technology accessories included

Spray nozzles for industrial applicationsOne of the world most complete lines of nozzles for numberless industrial appli-cations Nozzles with a wide openings range various types of vanes several spray patterns anti-clog design available in small and big dimensions and made in many food-grade materials like PFTE and Stainless Steel 316L with threaded and flanged connections

Air assisted atomizersUltrasonic classic and automatic atomiz-ers for the finest atomization in any insus-trial process High quality machining and strict quality control ensure your systems top professional resultsProgramming and control panels for an easy assembly of complete humidification systems

CTG SP

CTG PM

CTG SW

CTG LN

Spraydry nozzlesAir assisted or hydraulic high pressure ato-mizers made in high-quality metal alloys or tungsten carbideA complete line of nozzles for the moder-nization of existing facilities at competitive prices To ensure highly accurate results and a long service life these nozzles are manufactured with the finest materials and technologically advanced machines

Paper mill productsA line of products specifically designed for perfect results on paper mill machines including disc nozzles patented for self-cleaning filters flat jet nozzles with orifices in sapphire ruby and ceramic oscillating tubes equipped with a computer driven motor

Steelwork nozzlesA complete line of nozzles for steelwork applications including continuous casting air atomizers and conventional nozzles descaling nozzles for high pressure sys-tems dovetail tips for cylinders cooling and high capacity flanged nozzles for coke quenching

Gas cooling lancesSpillback or air assited lances for gas coo-ling in steelworks cement plants and other industrial applicationsWe can supply spare parts upgrade your plant and even supply a complete PLC driven system to enhance the towers per-formances to the highest efficiency level allowed by today technology

wwwpnr-nozzlescomCTG SH 07 EU

CTG SH 07 EUwwwpnr-nozzlescom

STAM

PATO

IN E

U 09

09

copy B

ellamp

Tany

Our products are distributed through

We are also represented in

PNR AmericaPNR Asia

PNR BalticPNR Benelux

PNR ChinaPNR Czech Republic

PNR DeutschlandPNR France

PNR ItaliaPNR Mexico

PNR UK

ArgentinaAustraliaAustriaBrazil

BulgariaCanada

ChileCroatia

DenmarkFinlandGreece

IndiaIndonesia

IranIrelandKorea

MalaysiaNorway

New ZealandPakistan

PhilippinesPoland

Portugal

RumeniaRussiaSerbia

SingaporeSlovenja

SpainSouth Africa

SwedenTaiwanTurkey

Venezuela

Page 12: SPRAY CTG SH 07 EU ENGINEERING HANDBOOK

12 wwwpnr-nozzlescom CTG SH 07 EU

FLAT JET SPRAY PATTERN

In a flat jet spray the liquid droplets are sprayed in the shape of a flat liquid layer with different thickness according to the principle used to generate the spray A flat jet spray nozzle serves the purpose of spraying onto a surface or an object moving in a transverse direction with respect to the one of the jet surface a typical example being the nozzles in a car washing tunnel The vast majority of flat spray nozzles used in the industry work according to one of the following principles

In line flat jet (pressure nozzle)This is the general purpose flat jet nozzle where the liquid enters the nozzle in line with the axis length and is fed to a pressure chamber from where it is ejected through the nozzle orifice Flow value and spray angle are determined respectively from the orifice cross section and the orifice edge profile

In line straight jet (pressure nozzle)These nozzles can be considered a special kind of flat jet nozzle with naught degree spray angle They are designed to produce a sharp stable stream with powerful impact on a given point and serve normally to perform cleaning processes or to cut soft materials

Spoon flat jet (deflection nozzle)In this type of nozzle the liquid is fed under pressure to a round outlet orifice and then deflected onto a smooth profiled surface so as to assume a flat jet shape This sophisticated design is of advantage since it offers a stronger jet impact using the same feed pressureHigher efficiency comes from the very little energy required to just change the direction of the liquid flow this being the only energy required to generate the flat jet

HOLLOW CONE SPRAY PATTERN

A hollow cone spray pattern consists of droplets concentrated onto the outer surface of a conical shape volume with no droplets contained in the inside of the conical jet shape These nozzles are normally used for smoke washing or gas cooling applications in several industrial processes

Hollow cone (turbulence nozzle)These nozzles use a tangential injection of liquid into a whirling chamber to generate centrifugal forces which break up the liquid vein as soon as it leaves the orifice Precisely designed orifice profiles making use of the Coanda effect provides the ability to obtain very large spray angles

Hollow cone (deflection nozzle)A hollow cone can also be obtained taking a liquid flow to change direction onto a properly designed surface in order to break the liquid into droplets and distributing them as a hollow cone spray patternThis kind of nozzle is mainly used for applications in dust control and fire fighting systems

LIQUID SPRAY AND SPRAY NOZZLES Spray nozzle typesLI

QUID

SPR

AYAN

D SP

RAY

NOZZ

LES

13wwwpnr-nozzlescomCTG SH 07 EU

PNR CODING SYSTEM

As any other industrial product spray nozzles need to be precisely identified by means of a code in order to avoid mistakesPNR coding system has been designed with the following requirements in mind

Codes must be easily processed by a computer in ascending orderbullCodes must describe completely the product without any need for additional descriptionbullCodes must show to the user the basic specifications of the nozzle in order to ease the search in the cataloguebull

We have therefore determined our coding system described as follows

LIQUID SPRAY AND SPRAY NOZZLES Spray nozzle coding

LIQU

ID S

PRAY

AND

SPRA

Y NO

ZZLE

S

AA U X YB312 305

Thread type or other connection

Special features

Nozzle material code (see below)

The three digits give the nozzle capacity in lpm at 3 bar according to rank value

Rank of flow value see table below

Nozzle spray angle see table below

Nozzle type as described in the catalogue pages shown in ascending order

Nozzle tables report on a blue background the nominal flow value measured at 30 barFlow values at different pressures have been calculated

These codes serve as an indication onlyBased on different types of nozzles their significance can occasionally be different

CAPACITY RANK

Rank Flow digits Actual flow (lmin)

0 0 490 049

1 1 490 490

2 2 490 490

3 3 490 490

4 4 490 4900

SOME SPRAY ANGLE CODES (DEGREES)

A = 0 L = 40 T = 80

B = 15 M = 45 U = 90

C = 20 N = 50 J = 110

D = 25 Q = 60 W = 120

F = 30 R = 65 Y = 130

H = 35 S = 75 Z = 180

A1 Carbon steel D6 Glassfibre reinforced PP L2 Incolloy 825

A2 High speed steel D7 High density polyethilene L8 Hastelloy C276

A8 Zinc coated steel D8 Polyvinylidenefluoride (PVDF) P6 Acr But Styrene (ABS)

A9 Nickel coated steel E0 EPDM P8 EPDM 40 Shore

B1 AISI 303 Stainless steel E1 Polytetrafluorethylene (PTFE) T1 Brass

B2 AISI 304 Stainless steel E2 PTFE (25 glassfibers) T2 Brass chrome plated

B21 AISI 304 L Stainless steel E31 Acetalic resin (POM) T3 Copper

B3 AISI 316 Stainless steel E7 Viton T5 Bronze

B31 AISI 316 L Stainless steel E8 Synthetic rubber (NBR) T8 Brass nickel plated

C2 AISI 416 Stainless steel hardened F5 Ceramic T81 Brass electroless nickel plated

D1 Polyvinylchloride (PVC) F31 Ruby insert 303 body V1 Aluminum

D2 Polypropylene (PP) G1 Cast iron V7 Aluminum electroless n plated

d3 Polyamide (PA) H1 Titanium

D5 Talcum filled Polypropylene L1 Monel 400

NOZZLE MATERIAL CODES

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LIQUID SPRAY AND SPRAY NOZZLES Computerized fluid dynamics

The customers demand for an always higher efficiency requires to use not only the best tooling but in addition control instruments and design methods always more sophisticated like for example new software for obtaining the velocity distribution of a fluid flowing through a conduit

These software programs require that the geometry of the inner con-duit to be geometrically defined and in addition the process conditions ( pressure temperature fluid capacity ) and the fluid properties ( specific weight viscosity ) to be Introduced

Based on the above data it is pos-sible to obtain a very precise dis-tribution for the velocity value in each single point of the conduit both under numeric form and flow diagramsThese Information make it possi-ble as an example to minimize the flow turbulence and consequently to Increase the nozzle efficiency through an increase in the fluid exit velocityThis is of basic Importance for some kind of nozzles for example those nozzles required to supply an high impact jet when performing descal-ing processes in a rolling millBy trial and error it is also possible to eliminate problems like jet Instability or cavitation

The overall process efficiency in the flow path before the nozzle can also be considered which often results into the design of geometry modifi-cation or the Introduction of special flow improving profiles along the conduit

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The diagram on the right shows the idealization of the process generating the droplets while the water jet exiting the nozzle is breaking up The theoretical model whose exactitude seems to be confirmed by scientific research considers that the liquid flowing through the nozzle and past the orifice edge evolves into a liquid lamina This lamina because of instability induced by aerodynamic forces breaks up first into elongated ligaments more or less cylindrical and later into droplets

Taking the above process as a guideline one can easily appreciate that the average droplet diameter is some what related to several factors like

1 The thickness of the lamina itself2 The evenness of the lamina 3 A steady flow and break up process

For what has been said above and limited to hydraulic nozzles the system designer looking for fine droplet sprays should consider that the following results can be expected

Impact nozzles best

Centrifugal hollow cone nozzles multiple full cone nozzles good

Turbulence nozzles fair

Centrifugal Vaneless full cones worst

The above choice is obviously based on the droplet generation process which changes from one nozzle type to another and allows to forecast which type is best fro the applicationAn additional consideration of interest is that the expected droplet size changes for the same type of nozzle with the nozzle size it is possible to generate smaller drops spraying the same water quantity at the same pressure using a greater number of smaller nozzles

In cases where energy requirements are not a problem or where a specified small droplet diameter is required the smal-lest droplets can be obtained by means of an air assisted atomizerHere the shear action of a high speed compressed air flow is used with several different techniques to obtain a value for SMD (Sauter Mean Diameter) of 50 microns and less

LIQUID SPRAY AND SPRAY NOZZLES Spray generation

Theoretical Mechanism of droplet generation

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SLIQUID SPRAY AND SPRAY NOZZLES Droplet spectrum

The atomization of a liquid by means of a compressible fluid like air steam or a gas is defined pneumatic two-phase or twin-fluid atomization Many industrial processes require the availability of finely atomized droplets and the techniques to produce atomized jets have been largely improved in the recent years In addition more sophisticated process techniques have incre-ased the demand for a precise definition about the characteristics of the spray and are now available to the design engineer Since many years PNR can supply upon request complete documentation containing test reports about the more interesting and additional information which are described below for all PNR products

Laser Interpherometer Test (By Pdpa)

PNR droplet size test reports are performed by means of a Laser Interpherometer (Phase Doppler Particle Analyzer) where two laser beams cross in a given point of the spray and define a test probe area Droplet flying through the probe area cause a light scatter which is picked up by the instrument receiver and processed through a computer in order to obtain relevant information about the spray characteristics

Report information

Report information is made of data printed on three pages where the first page contains the most interesting data which make possible to base process calculations upon precise data about spraying degrees process efficiency and jet behavior in operational ambiance These pages contain the Sauter Mean Diameter value whose knowledge is of special importance in heat exchange calculations about evaporative gas cooling processes since it gives the possibility of evaluating the exchange surface obtained by atomizing for a given liquid volume

The upper picture at page 18 referring to atomizing water by means compressed air shows two following histograms

bull Distribution curve of droplet diameter (micron)

bull Distribution curve of droplet velocities (mps)

and the below described values

bull Arithmetic Mean Diameter (D10)

bull Surface Mean Diameter (D20)

bull Volume Mean Diameter (D30)

bull Sauter Mean Diameter (D32)

ARITHMETIC MEAN DIAMETERThis is a diameter value which multiplied by the local num-ber of droplets in the sample equals the addition of alI droplets diameters

SURFACE MEAN DIAMETERThis is the diameter of such a droplet whose surface mul-tiplied by the total droplets number equals the sum of alI droplets surfaces

VOLUME MEAN DIAMETERThis is the diameter of such a droplet whose volume mul-tiplied by the total droplets number equals the sum of all droplets volumes

SAUTER MEAN DIAMETERThis is the diameter of such a droplet whose volumearea ratio equals the ratio between the sum of alI droplet volu-mes divided by the sum of alI droplet surfaces

D10 = Σ i ni di

Σ i ni

D20 = Σ i ni di

2

Σ i ni

D30 = Σ i ni di

3

Σ i ni

D32 = Σ i ni di

3

Σ i di

2

3

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AttemptsDroplet number crossing probe area during test time This includes both validated and not validated droplet

Correct Count Criteria A mathematic correction is applied to validate droplets which cross Probe Area in a peripheral belt or to droplets without a perfect spherical shape so that alI validated droplets parameters are homogeneous (This correction is necessary so that there is direct proportionally between laser beam phase and droplet number diameter)

Number Density It is the number of droplets passing through probe area within test time

Probe areaThis is the area where the two laser beams are crossing so determining the probe area AlI droplets intersecting probe area are checked droplets which respect given parameters for shape are taken as valid droplets and make up the sample whose size and velocity parameters are reported

ValidationsDroplets accepted based on given shape parameters to make up for test sample

Velocity MeanDroplets distribution speed histogram (ms)

Volume Flow RateIt is the volume measured in cubic centimeter per second of the validated droplets making up for the sample

Volume FluxIt is the flow rate per specific area measured in cubic centimeter per second and square centimeter of the validated droplets making up the sample

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LIQUID SPRAY AND SPRAY NOZZLES Droplet spectrum

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SLIQUID SPRAY AND SPRAY NOZZLES Droplet spectrum

PNR can supply upon request complete documentation con-taining test reports about the aforementioned parameters and additional information for all PNR atomizersThe diagrams beside show the distribution of droplet diameters and droplet velocities of a spray under test as available to our customers

In the photo beside a test being performed at our laboratoriesWe use a computer driven laser interpherometer to detect and record the spray parameters while fluid capacities and feed pressure values are monitored through high precision instru-ments

IMPORTANT NOTE

The droplet size values measured with a PDPA instrumentation are representative of a well specified volume inside the spray and taking measurements in a different volume they can be considerably differentA correct spray droplet size characterization requires then not only tests being performed in several volumes within the spray but also that those measure volumes are selected with regard to the process the droplets are expected to performAs an example the droplet characterization of a spray should define how many volumes have been tested and which are the coordinates of each single test volume in relation to the nozzle orifice

Most of the times pretending to describe the droplet spectrum of a spray nozzle at a given pressure with only one diagram is therefore not correct

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In order to calculate the discharge flow rate from a given nozzle the Bernoulli law shall be used which says that the energy of a liquid flow remains unchanged over alI the sections of the flow Friction and turbu-lence losses are neglected which is reasonable for our purposes if the cal-culation is performed over two sections not too far away from each other

The Bernoulli law can be written as follows

Therefore if we consider two sections of the same pipe section A and section B we can write that the flow energy remains constant in the form

If we finally consider that the two above sections are taken immediately before and immediately after the nozzle outlet orifice being

ZA = ZB PB = 0 (PA is a differential pressure referred at the atmosphere pressure)

VA cong 0 negligible as compared to VB (for orifice diameter much smaller than the duct diameter)

we shall come to the formula

When we define a new constant k to include the value of the nozzle orifice outlet area (A) then we come to the following equation which says that for a nozzle spraying into a room at ambient pressure the exiting flow is proportional to the feed line pressure

Considering now two different pressure values for the same nozzle since k is a constant quantity we can write that

and derive from the above an equation that makes it possible to calculate the nozzle flow value at any given pressure value once the flow value at another pressure value is known

The energy of a given liquid flow crossing a given pipe section is composed of three parts namely

P Pressure energy of liquid particle per volume unit

1 ρV2 Kinetic energy of liquid particle per volume unit2ρgz Potential Energy of liquid particle per volume unit

Where ρ = density of liquid g = gravitational acceleration

z = height respect to one plane of reference V = liquid velocity

PA = 1 ρVB 2 rArr

2

K = Q rArr

PK =

Q1 = Q2 rArr

P1 P2

Q = A V rArr

Q = A x C x P rArr

1 P + 1 ρV2 + ρgz = E

2

VB = 2 PA rArr ρ

Q1 = P1

Q2 P2

3 V = C P

4 Q = K P

2 PA + 1 ρVA 2 + ρgzA = PB + 1 ρVB

2 + ρgzB 2 2

EXIT VELOCITY DEPENDS UPON PRESSURE

NOZZLE CAPACITY DEPENDS UPON PRESSURE

NOZZLE CAPACITYAT A DIFFERENT PRESSURE

5 Q2 = Q1 P2

P1

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LIQUID SPRAY AND SPRAY NOZZLES Nozzle flow rate

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SLIQUID SPRAY AND SPRAY NOZZLES Nozzle flow rate

The Equation (5) has been obtained after having simplified the real problem neglecting several factors like for examplebullInmostofthepracticalapplicationcasestheflowisturbulentandnotlaminarbullFrictionlossestendtostronglyincreasewithliquidvelocitybullDependinguponthetypeofnozzleadifferentpercentageoftheavailableenergyisusedtobreakupthejetandgivethe

desired spray pattern and spray angle

For the above reason equation (5) gives reliable results if used in a limited pressure range around the pressure value where the flow rate is known with this pressure range depending upon the type of nozzleOur experience has shown that one can expect the error in the calculated value to be lower than +- 6 for pressure values ranging from 13 to 3 times the reference value

As an example a nozzle rated for 10 lpm at 3 bars would have according to equation (5) the following flow valuesa 1 bar 577 lpma 9 bar 173 lpmin real conditions it can be expected the flow rate values to beas high as 61 lpm a 1 baras low as 162 lpm a 9 barAbove considerations are to be used as a guideline only because of the many factors influencing real operations which have not been considered here for example liquid temperature viscosity and density

Possible percentage deviation from theoretical flow rate values

Also above mentioned percentage errors have to be understood for nozzles using part of the flow energy to produce wide angle spray patternsLower values can be expected for narrow angle nozzles impact nozzles and straight jet nozzles Laboratory tests and diagrams showing real flow rate values for each nozzles are used in practice when a precise result must be available

Nozzle discharge coefficient

With reference to equation (4) if we consider the pressure value to be equal to 1 (P = 1 bar) the flow rate of the nozzle becomes

K is a parameter widely used in the fire fighting industry

In some instances reference is made to the nozzle discharge coefficient or shortly to the nozzle coefficient to indicate the nozzle flow rate for a unitary pressure Of course for a given pressure value Pn the flow value will be

+ 6

+ 3

- 3

- 6

CAPACITY AT A GIVEN PRESSURE VALUEWHEN K KHOWN

NOZZLE CAPACITYFOR P=1 barQ = K P = K 1 = K

6 Qn = K Pn

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The spray angle is the opening angle which the nozzle jet of droplets forms at the moment when it leaves the nozzle orifice and it is one of the fundamental parameters for the choice of a given nozzleIn fact the amplitude of the spray angle determines in connection with the distance between the nozzle orifice and the target to be covered the spray coverage and the density of liquid sprayed with respect to the cover area See our Catalogue for description of the different nozzle spray patterns The table at the bottom of the page gives the theoretical spray width based on the nozzle spray angle and the distance from the nozzle orifice It is important to note that because of several factors like gravity forces and aerodynamic drag the spray angle value cannot be maintained but in in a limited distance normally up to 300 mm from the orifice For air assisted atomizers it is improper to use the term spray angle since no precise value can be measured Therefore the values given by Catalogues are to be intended as guidelines only

THEORETICAL SPRAY COVERAGE

at various distances from nozzle orifice

Spray 50 100 150 200 250 300 400 500 600 700 800 1000 Angle mm mm mm mm mm mm mm mm mm mm mm mm

15deg 13 26 40 53 66 79 105 132 158 184 211 263 25deg 22 44 67 89 111 133 177 222 266 310 355 443 30deg 27 54 80 107 134 161 214 268 322 375 429 536 35deg 32 63 95 126 158 189 252 315 378 441 505 631 40deg 36 73 109 146 182 218 291 364 437 510 582 728 45deg 41 83 124 166 207 249 331 414 497 580 663 828 50deg 47 93 140 187 233 280 373 466 560 653 746 933 60deg 58 116 173 231 289 346 462 577 693 808 924 1150 65deg 64 127 191 255 319 382 510 637 765 892 1020 1270 70deg 70 140 210 280 350 420 560 700 840 980 1120 1400 75deg 77 154 230 307 384 460 614 767 921 1070 1230 1530 80deg 84 168 252 336 420 504 671 839 1010 1180 1340 1680 90deg 100 200 300 400 500 600 800 1000 1200 1400 1600 2000 95deg 109 218 327 437 546 655 873 1090 1310 1530 1750 2180 100deg 119 238 358 477 596 715 953 1190 1430 1670 1910 2380 110deg 143 286 429 571 714 857 1140 1430 1710 2000 2290 2856 120deg 173 346 520 693 866 1040 1390 1730 2080 2430 2771 3464 130deg 215 429 643 858 1070 1290 1720 2150 2570 3002 3431 4289

WhereASCbull = Actual Spray CoverageTSCbull = Theoretical Spray CoverageASAbull = Actual Spray AngleTSAbull = Theoretical Spray AngleL bull = Spray Distances

TSC = 2 middot L middot ctan ( TSA )2

7

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LIQUID SPRAY AND SPRAY NOZZLES Spray angle

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SLIQUID SPRAY AND SPRAY NOZZLES Spray angle

Depending upon the nozzle design variations of feed pressure may have a great influence on the spray angle valueGenerally with increasing pressure turbulence full cone nozzles will produce narrower angles flat jet nozzles will show a wider angle spray while nozzles working on the deflection principle like spiral nozzles and K style flat jet nozzles will be less affected by pressure changesAll nozzles will not function properly with very low pressure values (from 05 bar down depending upon nozzle type ) with a marked decay in performance larger drops not well defined spray pattern lower spray angle values

The above pictures show spray angles for different nozzles and different pressure valuesShould your application strictly require that a given value of the spray angle is obtained under a given pressure value or pressure range of values please obtain a test report from our laboratories

Full cone nozze DDW 2235

Flat jet nozzleJCW 2245

Spiral nozzeECW 2230

Pressure 05 bar Pressure 05 bar Pressure 05 bar

Pressure 3 bar Pressure 3 bar Pressure 3 bar

Pressure 10 bar Pressure 10 bar Pressure 10 bar

Photo obtained with 120000s flashlight

picture 1

picture 4

picture 7

picture 2

picture 5

picture 8

picture 3

picture 6

picture 9

NotePicture 2 shows clearly the droplet generation mechanism as described at page 15

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Terms and definitions

A very important characteristic of a spray nozzle is a parameter called Spray Distribution which gives a precise information about how evenly the drops of the spray are distributed onto the area covered by the sprayIt is self understood that normally it is preferable to obtain the most even distribution possibleIn the past this was done through the visual examination of a diagram reporting the quantity of water contained for example in glass pipes aligned onto the spray coverage areaPnr has determined to obtain such a result in a scientific way through high technology instrumentation as shown in the pictures below showing one of our patternators and a typical distribution diagram

Now to the spray geometry and some definition letrsquos consider a nozzle with a capa-city Q at the pressure PAt every value for distance H which we call height of spray we can define a plane lsquonrsquo normal to the nozzle axis on which a line can define the intersection of the spray onto the planeThe area covered by the spray on the plane lsquonrsquo has a surface S depending from the following parametersa) Spray pattern Fb) Opening angle of the spray αc) Height of the spray H

We can then write S=S( F α H )

In case of a full cone nozzle S is a circle with diameter C and S = 0785 C2

The capacity of the nozzle flows through the surface S but each smaller area inside the surface S will probably have a different value for the flow passing through itWe introduce then the value of Specific Capacity q

1) Specific Capacity

The function q depends upon the single point (xy) in the section S and then

Determining the function q is however very expensive therefore in practice two different functions are used which give in most occurrences sufficient information

2) Linear Distribution

3) Angular distribution

part Qpart x

qx =

Diagram 1

q = limΔS 0

ΔQΔS

q = = f (x y H)part Qpart S

part Qpart φ

qφ =

ΔQ is the liquid flowing through a surface ΔSwhere ΔS is a fraction of the surface S

x and y are the local coordinates in the section planewhere H is the distance of the test surface from the nozzle orifice

partQ is the variation in capacitywhere partx is the variation of a generic linear coordinate

partQ is the variation in capacitywhere partφ is the variation of a generic angular coordinate

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LIQUID SPRAY AND SPRAY NOZZLES Spray Distribution

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LIQUID SPRAY AND SPRAY NOZZLES Spray Distribution

Values extracted from these functions can characterize the spray and allow for drawing the diagrams defined as Distribution Curves

Analyzing the above curves it is possible to determine the type of water distribution along the spray coverage and the type of spray pattern like for example a full cone hollow cone flat or straight jet spray

Distribution measurement

The water distribution along the spray coverage is determined by means of an instrument called Patternator

A patternator consists of the following parts 1) Liquid collector2) Cell block3) Measure block4) Unloading block

The nozzle is above the instrument and it is orienta-ted in such a way the jet is collected into the upper liquid collectorThe liquid collector can be linear ( diagram 5 ) or round ( diagram 6 ) according to the test being runFrom the single parts in the collector the liquid is sent into the corresponding cells below (2)

The Measure block (3) determines the liquid content in each single cell then the unloading block (4) empties the instrument sending the liquid to the collection drain

There are two types of patternators

Analogic1 the different levels of liquid is visible through the transparent walls of the cells or pipes sometimes containing some kind of floating balls and a picture can be taken with a cameraDigital2 Delivering an automatic reading of the values in the cells the values being supplied as an electronic file from which a distribution curve can be easily obtained

Diagram 2 Linear distribution Diagram 3 Angular distribution

Diagram 4

Diagram 6 Circular collectorDiagram 5 Linear collector

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LIQUID SPRAY AND SPRAY NOZZLES Spray Distribution

Normalizing distribution curve

The values obtained from the cells of the patternator showing the water quantity collected in the single cells allow for preparing a Distribution curve which can be given as a single line curve or as a row of vertical barsThese resemble the liquid level collected into the glass pipes of the old type instrumentation

The curves prepared based on the liquid level in the single cells still are not precise they depend in fact from the testing time the longer this time the larger the liquid quantity sprayedTo eliminate the influence of time from the test it is necessary to transform the effective curves to normalized curves

Normalized4) linear distribution

Normalized5) angular distribution

Please note that Maximum value is the one belonging to the series of values measured in the cellsIn addition to the distribution it is possible to normalize the intervals to with the following formulas

Normalized 6) linear interval

Normalized 7) angular interval

The linear normalized amplitude is defined inside an interval [-1 +1]The angular normalized amplitude is defined inside an interval [0+2π]

Diagram 7 Effective linear distribution curve Diagram 8 Effective angular distribution curve

Mx

xx q

q=δ

N

πθ

2=Δ

Diagram 9 Normalized linear distribution curve Diagram 10 Normalized angular distribution curve

qx is the linear distribution of a generic cellwhere qx

M is the maximum linear distribution measured

qφ is the linear distribution of a generic cellwhere qφ

M is the maximum linear distribution measured

2 is the normalized linear amplitude of the spraywhere N is the number of active cells (active cells = cells containing liquid)

2π is the normalized angular amplitude of the spraywhere N is the number of active cells (active cells = cells containing liquid)

Mq

q

ϕ

ϕϕδ =φ

φ

φ

2

N=Δλ

2

N=Δλ

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Evaluation of spray distribution

To evaluate distribution curves it is necessary to take three properties into consideration

a) UNIFORMITY b) MONOTONY c) SIMMETRY

As described in the following diagrams and definitions

a) UNIFORM A distribution that minimizes the ratio AAdeg

b) MONOTONE Is a distribution with a curve which grows on the left side and decreases on the left side c) SYMMETRIC Is a distribution which minimizes the Ratio A+A-

Based on the above definitions the following curves show the ideal situations

The three properties are then evaluated by means of the following parameters

1 Integral uniformity

2 Incremental uniformity

3 Symmetry index

Complete details about the above formulas and definition can be found in our Technical Bulletin REL 080002 which shall be released from our Technical Department on request

Diagram 12Normalized and monotone distribution

Diagram 11Normalized and monotone distribution

Diagram 14Ideal monotony

Diagram 15Ideal symmetry

Diagram 13Ideal uniformity

1001 sdot=MA

AU

1002

2 sdot=lowastσ

U

1001

sdot⎥⎦

⎤⎢⎣

sdotminus=

lowast

lowast

δ

ε

NI S

sum minus=lowast

M

i iδδε

A is the area included in the normalized curvewhere Adeg is the rest of the area included in the 2x1 rectangle

Left side is the area -1 0where Right side is the area 0 +1

A+ is the area included below the curve on the right sidewhere A- is the area included below the curve on the left side

where

where δrsquo is the value of normalized liquid content in the symmetric cell N number of cells containing liquid in half of the diagram

lowast

lowast sum=

N

N

i i

δ

δ N Number of cells containing liquid

A area included below the curve AM area included below the ideal curvewhere

sum minus= +lowast

1

N

i ii δδσ

N Number of cells containing liquid

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SLIQUID SPRAY AND SPRAY NOZZLES Spray Distribution

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Liquids are characterized for their property of undergoing continuous deformation when subjected to shear stress The property of fluids (liquids or gases) to resist flowing due to the existence of internal friction within the fluid is called visco-sity

Thus if we imagine the different layers of fluid sliding one over the other with friction we can imagine that viscosity is defined the force required to move a unit area of fluid for a unit distance Viscosity is measured with many different systems among which the most used are the following

The following table shows correspondences between the most used viscosity units

The viscosity value of a liquid depends upon the temperature therefore the viscosity value must always be given with reference to a temperature value The viscosity of water (20deg C) is 1 Centipoise and 1 Centistoke since water mass density = 1

KINEMATIC SAYBOLT SAYBOLT ENGLER VISCOSITY UNIVERSAL FUROL

Centistoke Sq feetsec SSU SSF Degrees

100 000001076 310 --- 100

500 000005382 424 --- 137

1000 00001076 588 --- 183

1566 00001686 80 --- 245

2052 00002209 100 --- 302

2515 00002707 120 --- 357

4295 00004623 200 --- 592

1080 0001163 500 523 1460

1510 0001625 700 720 2044

1942 0002090 900 921 2628

3023 0003254 1400 143 4090

3885 0004182 1800 183 5260

5394 0005806 2500 254 7300

10788 001161 5000 509 146

15103 001626 7000 712 204

19419 002092 9000 916 263

32365 003483 15000 1526 438

METHOD UNIT DIMENSIONS NOTES

1 Dynamic viscosity(Absolute viscosity) Poise ML T-1 Poise = 100 Centipoises = (1 dyne per seccm2)

2 Kinematic viscosity Stoke L2 T-1 1 Stoke = 100 Centistoke = (cm2sec)Kinematic viscosity = Dynamic viscositydensity

3 SSUSSF

One of the most widely instruments to determine is the Saybolt viscosimeter which measures the time in seconds required for a fixed volume of a given liquid to flow through an orificeSSU = Seconds Saybolt Universal relates to a smaller orifice for less viscous liquidsSSF = Seconds Saybolt Furol relates to a larger orifice for more viscous liquids

LIQUID SPRAY AND SPRAY NOZZLES Influence of liquid viscosity

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Viscosity influence on nozzle flow rate

AlI nozzle Catalogue data refer to spraying water (water cinematic viscosity is equal to 1 Centistoke)A liquid with viscosity higher than water will require more energy to be pumped and sprayed and will flow with lower velocity at the same pressure and this will cause a reduction in the turbulence of the flow For the above reason nozzles working on the turbulence principle like normal full cone nozzles and whirl hollow cone nozzles will show an increase in capacity while spraying liquids with viscosity higher than water This increase is very consistent for small size nozzles where the small radius of the whirl chamber tends to cause high turbu-lence in the flow and tends to diminish and to disappear for nominal capacity valves (capacity values at 3 bar) larger than 15 liters per minute

The graph below shows for a liquid with a viscosity of about 4 Centistokes typical variations in the nozzle flow rate value for different values of the nozzle whirl chamber diameter As it may be seen these variations can be neglected in most practical applications where nozzles with whirl chamber diameters well over 3 mm are used

For other types of nozzles not working on the turbulence principle the increase on viscosity will simply reduce the liquid exit velocity at the orifice thus causing a decrease in capacity Experience shows that this decrease ranges between 3 and 6 of nominal water capacity that is to say that the variation introduced is in the same order of magnitude as the nozzle flow rate toler-ance

Viscosity influence on nozzle spray angle and spray pattern

With reference to the theory of jet break-up and droplet information it can be easily imagined that spraying a liquid more viscous than water is a difficult task

Al the properties of the spray tend to worsen therefore one can expectA higher value for the minimum operating pressure that is the pressure value which allows for obtaining a well defined 1 spray with the expected spray angle A worse spray distribution since the viscous behavior of the liquid makes it more difficult to pro-duce fine droplets and 2 to distribute them evenly with the desired spray pattern A narrower spray angle It is difficult to give guidelines since results on different nozzles at different pressures and with 3 different liquids are scarcely predictableHowever our experience shows that in many cases the use of impact nozzles can give acceptable results where all other type of nozzle failsA laboratory test or a field test are stili the safest way to obtain sound results

50

45

40

35

30

25

20

15

10

5

0 2 3 4 5 6 7 8 9

Increase Flow rate vs Whirl Chamber Diameter

Incr

ease

Flo

w R

ate

[mm

]

Whirl Chamber Diameter [mm]

LIQUID SPRAY AND SPRAY NOZZLES Influence of liquid viscosityLI

QUID

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AYAN

D SP

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LES

29wwwpnr-nozzlescomCTG SH 07 EU

With reference to the Bernoulli Rule as exposed in page 6 one can say that the pressure energy of the liquid flow at the nozzle inlet is transformed totally (minus some losses due to friction inside the nozzle) into liquid velocity at the nozzle orificeCatalogue figures give nozzle capacities when spraying waterIf the specific gravity or density of the liquid is different from that of water the available pressure energy will produce a different liquid velocity at the nozzle orificesIn other words a given quantity of energy will spray always the same quantity of liquid mass but different volumes (flow rates) according to the liquid specific gravity or density

Therefore a liquid heavier than water will exit the nozzle with a lower velocity at lower flow rate while to the contrary a liquid lighter than water will be sprayed at higher velocity at higher flow rate

The following formula is to be applied

The table below gives the value of a correction factor to obtain the flow rate of a liquid with different specific weight as water

WhereQL Liquid flow rateQW Water flow rateF Correction factor

kgliter Libregallon F

06 50 129

07 58 120

08 67 112

09 75 105

10 83 100

11 92 095

12 100 091

13 109 088

14 117 085

15 125 082

16 134 079

17 142 077

18 150 075

19 159 073

20 167 071

QL = F QW8

LIQUID SPRAY AND SPRAY NOZZLES Influence of liquid specific gravity

LIQU

ID S

PRAY

AND

SPRA

Y NO

ZZLE

S

30 wwwpnr-nozzlescom CTG SH 07 EU

The spraying water impact of a nozzle depends on several factors and more precisely spray distribution pattern and spray angle The first step to calculate the impact value which is usually expressed in Kilograms per square centimeter is to deter-mine Total Theoretical lmpact Value using the following formula

The obtained value has to be multiplied by the Total Theoretical Impact per Square Centimeter Coefficient (E)The final value is the Spraying Liquid Impact expressed in kgpcm2Of course not alI the energy of the fluid vein is transferred to the impact point

A part of this energy sometimes a considerable part goes to obtain a desired spraying angle by having the liquid vein acquire a high rotational speed inside the whirl chamber The highest value of impact is obtained with straight jet nozzle and the value can be calculated multiplying spraying pressure per 19The tables below containing the Total Theoretical Impact sqcm coefficient values for different spray pattern nozzles for a dis-tance of 300 mm

[kgpcm2]

TOTAL THEORETICAL IMPACT PER SQ CM COEFFICIENT AT DISTANCE OF 300 MM (E)

Spray Flat jet nozzle Spray Full cone nozzle Spray Hollow cone nozzle Angle Angle Angle

15deg 0300 15deg 0110 25deg 0180 35deg 0130 30deg 0025 40deg 0120 50deg 0100 50deg 0010 65deg 0070 65deg 0004 60deg80deg 001002 80deg 0050 80deg 0002 100deg 0001

WhereQ is the flow rate at working pressure in lpmP is the pressure value in kgpcm2

[kgpcm2]TTI = 0024 Q P

SLI = E TTI

9

10

LIQU

ID S

PRAY

AND

SPRA

Y NO

ZZLE

SLIQUID SPRAY AND SPRAY NOZZLES Jet impact

31wwwpnr-nozzlescomCTG SH 07 EU

Jet impact diagram

A further parameter to characterize the performance of a spray nozzle is the distribution of the jet impact force which could be derived by means of mathematical methods from the values of the spray distribution onto the surface covered by the spray but which can more easily be measured with the help of specifically designed instrumentation

In some applications the jet impact force Is the most important parameter used to realize the required processSteel sheet descaling in a rolling mill is a typical example where the jet impact is required to take away the surface scale and obtain a perfectly even surfaceFor that reason special nozzles have been developed to perform this very task where service life impact value and spray distribution reach the values required for satisfactory resultThese test are performed in a laboratory equipped with a specifically designed instrumentation where the high pressures involved in these process can be reached which can measure the pressure values along a matrix of points distributed in the spray area covered by the nozzle

These values are supplied both in a table of values and as a 3D pressure diagram similar to those shown below

On such applications where producing high impact values in the jet is necessary it is of paramount importance that the liquid flow turbulence is kept to a minimum and therefore it is widely used to insert into the nozzle entrance devices designed to improve the operating conditions by forcing the liquid flow through straight passages with several different shapes by doing so the impact delivered by the spray is increased with the same feed pressure

One typical shape used by Pnr is shown on the right and the two dia-grams below show the impact force diagrams for the same nozzle with and without a flow straightener the reduction of flow turbulence can lead in increase of impact force often higher than 20Further improvements of course are available when the nozzle inside profile is properly designed in order to avoid sharp cross section changes and all surfaces are finished as smoothly as possible

Typical design of a Pnr flow straightener

Impact pressure diagram with flow straightenerImpact pressure diagram without flow straightener

LIQU

ID S

PRAY

AND

SPRA

Y NO

ZZLE

S

LIQUID SPRAY AND SPRAY NOZZLES Jet impact

32 wwwpnr-nozzlescom CTG SH 07 EU

LIQUID SPRAY AND SPRAY NOZZLES Pressure drop through a nozzle

Pressure drop through a nozzle

Some of our customers have asked us In the past which Is the pressure drop through a nozzle since they consider a nozzle one of the parts in a piping like a valve or an elbow which causes a given pressure drop along the line

The reality is different and can be easily understood when considering the Bernoulli formula [2] as given at page 19 of this manual the formula says that the total energy of a liquid flow is made from the addition of three facors

Potential energy due to elevationbullPressure energybullVelocity energybull

When we apply the formula at the entrance and at the outlet ( the orifice ) of a nozzle and we neglect the influence of turbulence losses in between we can easily see that

The potential energy variation can be neglected because of the limited dimensions of the nozzle since the distance bullbetween the nozzle entrance and the nozzle orifice plays no role-The pressure energy variation is important since the liquid pressure value falls abruptly from the pressure inside the feed bullpipe to the ambient pressureThe velocity energy variation is also consistent since the liquid is ejected from the orifice at high speedbull

In other words the pressure energy of the liquid flowing through the orifice is suddenly transformed in liquid drops velocity which is exactly what a nozzle is designed to do

This is shown from equation [3] at page 19 which allows the exit velocity from the nozzle to be calculated from the pressure inside the pipe ( we actually consider the pressure difference between the inside of the pipe and the ambient pressure in this formula )

In other words all the energy still available at the nozzle is converted into velocity or if you so prefer you have a total pressure fall The system designer shall therefore evaluate all the pressure drop between the pump outlet flange and the nozzle entrance in order to be sure that the nozzle feed pressure is sufficient to assure the desired capacity for the liquid being sprayed

parameters valuesat nozzle outlet

nozzle inlet nozzle oulet or orice

feed pressure

inlet velocity

parameters valuesat the nozzle inlet

(A)potential elevation

energy

(A)velocity ( kinetic ) energy

(A)pressure energy

ambient pressure

exit velocity

LIQU

ID S

PRAY

AND

SPRA

Y NO

ZZLE

S

33wwwpnr-nozzlescomCTG SH 07 EU

NOZ

ZLE

MAT

ERIA

LS

The choice of the right material for a nozzle is sometimes the most important one to do since the nozzle operating life depends upon it There are several factors to influence or shorten the nozzle operating life sometimes more than one at the same time the most important being

Wear from solid particles suspended into the liquid being sprayed1 Chemical corrosion from the liquid being sprayed 2 Chemical corrosion from the ambience outside the nozzle3 Exposure to high temperature 4 Exposure to mechanical shocks5

NOZZLE MATERIALSPnr material codes 34Properties of materials 35Mechanical properties of materials 39Chemical resistance of materials 40

NOZZLE MATERIALS

34 wwwpnr-nozzlescom CTG SH 07 EU

PNR has adopted a short code to identify construction materials for nozzles and nozzle partsHere below the most frequenty used materials

MATERIAL STANDARDS

The following standards are mentioned with reference to materials identification

NOZ

ZLE

MAT

ERIA

LS

A1 Free Cutting Steel E1 TEFLONreg (PTFE) L3 NICROFERreg 5923

A2 Carbon Steel E3 DELRINreg (POM) L4 STELLITEreg 6

A8 Zinc Plated Mild Steel E6 PERSPEXreg (PMMA) L5 HASTELLOYreg B2

A9 Nickel Plated Mild Steel E7 VITONreg (FPM) L6 HASTELLOYreg C4

B2 AISI 304 Stainless Steel E8 NBR- Sh 70 Rubber L61 HASTELLOYreg C22

B3 AISI 316 Stainless Steel E81 SANTOPRENEreg Rubber L62 ULTIMETreg

B31 AISI 316L Stainless Steel E82 KLINGERITEreg L7 NICKEL 201

B4 AISI 321 Stainless Steel E83 HYPALONreg L8 HASTELLOYreg C276

B8 AISI 309 Stainless Steel E91 Silicon L9 SANICROreg 28 SS

B81 AISI 310 Stainless Steel F12 Tungsten Carbide (TC) N1 AISI 302 Stainless Steel

C1 AISI 420 St Steel hardened F2 PIREXreg P6 ABS

C4 AISI 317 Stainless Steel F3 Rubin P7 FASIT OIL

C6 SAF 2205 Stainless Steel F4 Zapphire P8 EPDM ShA Rubber

D1 Polyvinylchloride (PVC) F5 Ceramic P9 STIROLUXreg 637

D2 Polypropylene (PP) F6 Silicon Carbide (SC) T1 Brass

D3 Polyamide (PA) G1 Cast Iron T3 Copper

D5 Powder Charged PP H1 Titanium T5 Bronze

D6 Fiberglass Charged PP L1 MONEL 400 T8 Nickel Plated Brass

D7 High Density Polyethylene L2 INCOLOYreg 825 V1 Aluminium

D8 Polyvinylidenefluoride (PVDF) L21 INCONELreg 600 V7 Aluminium ENP

STANDARD ORGANIZATION COUNTRY STANDARD CODE

AFNOR Association Franccedilaise de Normalisation France NF

AISI American Iron and Steel Institute USA AISI

ANSI American National Standards Institute USA ANSI

ASTM American Society for Testing and Materials USA ASTM

BSI British Standards Institution UK BS

DIN Deutsches Institut fuumlr Normung Germany DIN

DSIT Dansk StandardsInformation Technology Denmark DS

ISO International Organization for Standardization International ISO

JIS Japanese Institute for Standard Japan JIS

UNI Ente Nazionale di Unificazione Italy UNI

NOTEThe complete list of the Materials Codes may be requested to our Technical Service mentioning release code TGCE CODMAT

NOZZLE MATERIALS PNR material codes

35wwwpnr-nozzlescomCTG SH 07 EU

NOZ

ZLE

MAT

ERIA

LS

B1 AISI 303 STAINLESS STEEL

Chemical composition CR 1750 NI 850 S 025 Coding correspondence

Type Stainless Steel Austenitic AISI 303

Hardening Not possible BS 303 S 21

Annealing 1050 1100deg C in water DIN Wnr 14305

Welding Possible with precautions Euro X10CrNiS1809

Corrosion properties

Good resistance Atmospheric exposure food substances organic chemicalsLow resistance Chlorides reducing acids and over 800deg C

JIS SUS 303

NF Z6CN 18-09

SIS 2346

UNI XWCrNiS 1809

B3 AISI 316 STAINLESS STEEL

Chemical composition C 005 CR 170 NI 120 MO 225 Coding correspondence

Type Stainless Steel Austenitic AISI 316

Hardening Not possible BS 316 S 21

Annealing 1050 1100deg C in water DIN Wnr 14401

Welding Easy using same steel electrodes Euro X6CrNiMo17122

Corrosion properties

Good resistance Atmosphere great number of salts organic acids foodsLow resistance Solutions of reducing acids temperatures over 500deg C

JIS SUS 316

NF Z6CND 17-11

SIS 2347

UNI X5CrNiMo1712

B31 AISI 316L STAINLESS STEEL

Chemical composition C 003 CR 170 NI 130 MO 225 Coding correspondence

Type Stainless Steel Austenitic AISI 316 L

Hardening Not possible BS 316S12

Annealing 1050 1100deg C in water DIN Wnr 14404

Welding Easy using same steel electrodes Euro X3CrNiMo1810

Corrosion properties

Good resistance Atmosphere great number of salts organic acids foods salt waterLow resistance Solutions of reducing acids temperatures over 500deg C

JIS SUS 316L

NF Z2CND17-12

SIS 2348

UNI X2CrNiMo 1712

NOZZLE MATERIALS Properties of materials

36 wwwpnr-nozzlescom CTG SH 07 EU

C1 AISI 420 STAINLESS STEEL

Chemical composition C 020 CR 1300 Coding correspondence

Type Stainless Steel Martensitic AISI 420

Hardening 980deg - 1030deg C in oil BS 420 S 29

Annealing 750deg - 800deg C in air DIN Wnr 14021

Welding Possible with precautions Euro X20Cr13

Corrosion properties Good resistance Drinkable water steamgasoline oil alcohol ammonia

JIS SUS 420 J1

NF Z20C13

SIS 2303

UNI X20Cr13

C2 AISI 416 STAINLESS STEEL

Chemical composition C 012 CR 1250 S 022 Coding correspondence

Type Stainless Steel Martensitic AISI 416

Hardening 950deg - 1100deg C in oil BS 416 S 21

Annealing 750deg - 800deg C DIN Wnr ---

Welding Not possible Euro X120CrS13

Corrosion properties Good resistance Drinkable water steamgasoline oil alcohol ammonia

JIS SUS 416

NF Z12CF13

SIS ---

UNI X12CrS13

D8 POLYVINYLIDENE FLUORIDE (PVDF)

Description HIGH-MOLECULAR WEIGHT THE TOUGHEST OF THE FLUOROCARBON RESINS

Trade names amp SuppliersKYNAR (Atochem North America Inc formerly Penwalt Corporation)

SOLEF (Solvay Polymer Corporation)

Physical andMechanical Properties

Excellent resistance to abrasion and stress fatigue

Extremely pure opaque white resin

Thermal Properties UsefuI in temperatures ranging from -73 149degC (-100 300degF)Heat deflection temperature is (8090deg C at 182 Bars (176 194deg F at 264 psi)

Chemical Compatibility

Excellent chemical resistanceCan be used with wet or dry halogens most strong acids and bases aliphatics aromaticsalcohols and strong oxidizing agentsNot recommended for contact with ketones esters amines and some organic acids(fuming sulfuric acid)

NOZZLE MATERIALS Properties of materialsN

OZZL

E M

ATER

IALS

37wwwpnr-nozzlescomCTG SH 07 EU

E1 POLYTETRAFLUOROETHYLENE (PTFE)

Description FLUOROPLASTIC THAT HAVE SOME OR ALL OF THEIR HYDROGEN MOLECULESREPLACED BY FLUORINE

Trade names amp Suppliers

TEFLON TFE FEP and PFA (Dupont Polymer Products)

NEOFLON (Daikin)

FLUON (ICI Americas Inc)

SST-2SST-3 (Shamrock Technologies Inc)

Physical andMechanical Properties

Low coefficient

Low adhesiveness

Buona resistenza agli agenti atmosferici

Good weatherabilityLow resistance to creep and wear unless reinforced with glass figravebers which results in superior resistance

Thermal Properties High and low temperature stabilityHeat deflection temperatures range from 4855deg C at 182 bar (118-132deg F at 264 psi)

Chemical CompatibilityChemically inert

Totally insoluble

E3 ACETAL (ACETAL HOMOPOLYMERS AND COPOLYMERS)

Description HIGHLY CRYSTALLINE RESINS BASED ON FORMALDEHYDE POLYMERIZATION TECHNOLOGY

Trade names amp Suppliers

DELRIN (Dupont Polymer Products Corporation)

CELCON (Hoechst Celanese Corporation)

ULTRAFORM (BASF Corporation)

RTP 800 (RTP Corporation)

LUPITAL amp TENAL (Franklin Polymers Inc)

FULTRON 404 (ICI Americas Inc)

Physical andMechanical Properties

High tensile strength rigidity and esilience

High fatigue endurance

Excellent dimensional stability

Low coefficient of friction

Outstanding abrasion and wear resistance

Excellent creep resistance

Thermal Properties Heat deflection temperatures range from 110 -136deg C at 182 bars(230 - 270deg F at 264 psi) higher if glass figravelled

Chemical Compatibility

Remains stable in long-term high temperature water immersionExcellent resistance to chemicals and solvents but prolonged exposure to strong acids not recommendedNote Suitable for close-tolerance high-performance partsAvailable for machined parts or may be injection molded

NOZZLE MATERIALS Properties of materials

NOZ

ZLE

MAT

ERIA

LS

38 wwwpnr-nozzlescom CTG SH 07 EU

L6 HASTELLOY C4

PHYSICAL AND MECHANICAL PROPERTIES CHEMICAL COMPOSITION CORROSION RESISTANCE

R = 650800 Mpa C = 0015 max

Very good against pitting and tensile-corrosion specially in oxydizing atmosphereResistance in welded joints definitely better than C 276 lower than C22

Rp02 = 250470 Mpa Ni = 65

HRB = 90 Cr = 160

Mo = 155

W = --

Fe = 3 max

Ti = 05

Co = 2 max

APPLICATIONSRecommended for applications with strongly oxidizing atmosphere

L61 HASTELLOY C 22

PHYSICAL AND MECHANICAL PROPERTIES CHEMICAL COMPOSITION CORROSION RESISTANCE

R = 700800 Mpa C = 001 max

Excellent performances with oxydizing atmospheres as well as for pitting and tensile-corrosion conditionsVery good resistance in reducing atmospheres and for welded joints

Rp02 = 360420 Mpa Ni = 56

HRB = 93 Cr = 22

Mo = 13

W = 3

Fe = 3

Ti = --

Co = 25 max

APPLICATIONSChemical industry (gas ducts gas washing and treatment systems phosphoric acid production) Heat exchangers pumps chlorination reactors

L8 HASTELLOY C 276

PHYSICAL AND MECHANICAL PROPERTIES CHEMICAL COMPOSITION CORROSION RESISTANCE

R = 600800 Mpa C = 0015 max

Very good in reducing and oxydizing atmospheresVery good against pitting and tensile-corrosionAcceptable resistance in welded jointsIn cast parts excessive segregation not eliminated by thermal treatment of annealing makes it convenient to use C22 or C4 qualitieswhich assure better corrosion resistance and mechanical properties

Rp02 = 300370 Mpa Ni = 57

HRB = 90 Cr = 145165

Mo = 1517

W = frac345

Fe =

V = 035 max

Co = 25 max

APPLICATIONSChemical industry (air ducts scrubbers fans) Paper industry Thermoelectric plants Steel thermal treatments

NOZ

ZLE

MAT

ERIA

LSNOZZLE MATERIALS Properties of materials

39wwwpnr-nozzlescomCTG SH 07 EU

MATERIALTENSILE STRENGHT

CORROSION RESISTANCERp 02 R

20degC 800degC 20degC 800degC

(68degF) (1408degF) (68degC) (1408degC)

AISI 302 280 100 680 200

Good sensitive to corrosionbetween grains for slow heatingand cooling in the 450-900deg Crange temperature

AISI 303 280 100 680 200 Discrete

AISI 304304L 270 90 600 100Good especially for 304L304 sensitive to corrosionbetween grains like AISI 302

AISI 309 250 100 640 220 Good Sensitive to corrosion between grains like AISI 302

AISI 310 310 170 650 270Good (gt 304 - 304L)Sensitive to corrosionbetween grains like AISI 302

AISI 316316L 270 110 560 220 Very high especially for 316L

AISI 321 210 100 540 140 Good

AISI 347 280 120 620 200 Good

AISI 416 620 70 750 90

Good in medium corrosive ambient (atmosphere water gasoline alcohol N1-13 foods)Not in high corrosive

BRASS 110-150 --- 360-410 --- Good especially when nickel plated

BRONZE 100-300 --- 200-600 --- Discrete especially with sea water

CAST IRON le 500 V 100-800 V

NICKEL ALLOYS 100-1000 V 300-1300 VVery high also for high temperature To use in the temperaturerange 800-1200deg C

PLASTICS --- --- 20-200 ---

Good also for erosionGenerally they are attackedwith oxidizers like nitric acidhalogens ect

PTFE --- --- 30-40 ---

Very high except for elementarystate of alkaline metalsand to compounds containingfluorine at high temp

DUPLEX STEEL gtAISI 3 gtAISI 3 gtAISI 3 gtAISI 3 Very high also with high temperatureand also for pitting

TITANIUM alloy 195-850 V 300-900 VVery high in oxidizing ambientVery low in reducing ambient and with compounds containing fluorine

Legend Rp 02 = 02 YIELD STRENGHT [MPa]R = ULTIMATE TENSILE STRENGHT [MPa]V = To verify time by time

NOZZLE MATERIALS Mechanical properties of materials

NOZ

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73wwwpnr-nozzlescomCTG SH 07 EU

PIPI

NG

PIPINGPipes data 74Economic pipe sizes 75Pressure drop in clean steel pipes 76Flange dimensions 78Sieve size conversion chart 80

PIPING

74 wwwpnr-nozzlescom CTG SH 07 EU

The following table report the data of pipes according to ANSI B3619 that is one of the most used standards that regulate welded stainless steel pipes

DN NPS OD[mm]

SCHEDULE

5S 10S 40SSTD 80SXS

t m t m t m t m

[mm] [kgm] [mm] [kgm] [mm] [kgm] [mm] [kgm]

6 18 103 NA NA 124 028 173 037 241 048

8 14 137 NA NA 165 050 224 064 302 081

10 38 172 NA NA 165 064 231 086 320 112

15 12 213 165 081 211 101 277 128 373 164

20 34 267 165 103 211 130 287 171 391 223

25 1 334 165 131 277 212 338 254 455 328

32 1frac14 422 165 167 277 273 356 344 485 453

40 1frac12 483 165 192 277 315 368 411 508 549

50 2 603 165 242 277 399 391 551 554 759

65 2frac12 730 211 374 305 534 516 875 701 116

80 3 889 211 458 305 655 549 115 762 155

90 3frac12 1016 211 525 305 752 574 138 808 189

100 4 1143 211 592 305 849 602 163 856 226

125 5 1413 277 960 340 117 655 221 953 314

150 6 1683 277 115 340 140 711 287 1097 432

200 8 2191 277 150 376 202 818 431 1270 656

250 10 2730 340 229 419 282 927 611 1270 827

300 12 3239 396 317 457 365 953 749 1270 988

350 14 3556 396 348 478 419 NA NA NA NA

400 16 4064 419 421 478 480 NA NA NA NA

450 18 457 419 474 478 541 NA NA NA NA

500 20 508 478 602 554 696 NA NA NA NA

550 22 559 478 662 554 767 NA NA NA NA

600 24 610 554 837 635 959 NA NA NA NA

Where

DN = Nominal diameter NPD = Nominal Pipe Size OD = Outside Diameter t = Wall Thickness m = Specific WeightPIPI

NG

PIPING Pipes data

75wwwpnr-nozzlescomCTG SH 07 EU

The following Specific Pressure Drops (Y) are normally used in the good engineering practice(where Y=ΔPL ΔP Pressur Drop and L Pipe Lenght)

For pipe sizing the Velocity (V) is also usedIn the following table are shown the typical liquid velocities in steel pipes

Some fixed pressure drop values indicationsfor gate valves (fully open) consider a pressure drop of 5 metersbullfor normal bends consider a pressure drop of 5 metersbullfor a check valve consider a pressure drop of 15 metersbull

In the succeeding tables we show the velocity and specific pressure drop for several flow rates and pipe diameters

Not boiling waterY = 02divide05 bar100 m for pump discharge (07 bar100 m max if P gt 50 bar)

Y lt 0110 bar100 m for pump suction

Boiling water Y = 004divide005 bar100 m for pump suction (velocity = 03divide09 ms)

LIQUID LINE TYPE

Specific Pressure Dropsvs Velocity [ms]

0 lt V lt 2 3 lt V lt 10 10 lt V lt 20

NOT BOILING WATER

Pump suctionPump discharge (long)Discharge leads (short)Boiler feedDrainsSloped sewer

03 divide 0606 divide 0912 divide 2712 divide 2709 divide 12

-

06 divide 1209 divide 1515 divide 3715 divide 3709 divide 1509 divide 15

09 divide 1812 divide 2124 divide 4224 divide 42

-12 divide 21

HYDROCARBON LIQUIDS(normal viscosity)

Pump suctionDischarge heather (long)Discharge leads (short)Drains

05 divide 0808 divide 1112 divide 2709 divide 12

06 divide 1209 divide 1515 divide 3709 divide 15

09 divide 1812 divide 2124 divide 46

-

MEDIUM VISCOSITY OILPump suctionDischarge (short)Drains

--

03

05 divide 0901 divide 0209 divide 15

08 divide 1501 divide 0312 divide 18

OTHER WATERCooling tower Chilled waterSea water and generally foulingwater (long pipes) ()

06 divide 09 09 divide 15 12 divide 21

Note () In this case Cameron method has to be used with C=1 Y = 005 divide 012 bar100 m for principal manifold Y = 012 divide 023 bar100 m for secondary manifold

PIPI

NG

PIPING Economic pipe sizes

76 wwwpnr-nozzlescom CTG SH 07 EU

18rdquo 14rdquo

1 0350 0370 0200 0090 38rdquo 12rdquo

2 0705 1340 0395 0331 0223 0082 0145 0029 34rdquo

3 1060 2890 0593 0673 0333 0176 0217 0061 0125 0016 1rdquo

4 1410 4940 0788 1150 0444 0291 0290 0101 0167 0027 0110 0010

5 1760 7460 0985 1750 0556 0424 0362 0149 0209 0040 0137 0014

6 1180 2460 0667 0594 0434 0207 0251 0054 0165 0019 114rdquo

8 1580 4060 0892 1020 0579 0351 0335 0091 0219 0033 0126 0009 112rdquo

10 1110 1530 0724 0534 0418 0136 0274 0049 0158 0012 0116 0006

15 1670 3250 1090 1130 0627 0284 0411 0099 0236 0026 0174 0012

20 2rdquo 2230 5600 1450 1900 0836 0481 0549 0168 0315 0043 0233 0021

30 0212 0013 212rdquo 2170 4130 1250 1020 0823 0353 0473 0092 0348 0043

40 0283 0022 0190 0007 2900 7180 1670 1760 1100 0606 0631 0155 0465 0073

50 0354 0032 0237 0012 2090 2700 1370 0911 0789 0233 0581 0108

60 0424 0044 0284 0017 2510 3810 1650 1290 0943 0321 0697 0150

70 0495 0079 0332 0022 3rdquo 2930 5120 1920 1720 111 0434 0814 0199

80 0566 0074 0379 0028 0248 0010 312rdquo 2190 2210 126 0554 0925 0253

90 0636 0093 0427 0035 0279 0013 0209 0006 2470 2770 142 0692 1040 0319

100 0707 0114 0474 0043 0310 0015 0232 0007 4rdquo 2740 3400 158 0843 1160 0392

150 1060 0238 0711 0090 0464 0031 0349 0016 0272 0008 4110 7440 236 181 1740 0828

200 1410 0414 0948 0153 0619 0053 0466 0027 0362 0014 315 314 2330 1450

250 1760 0625 1190 0233 0774 0080 0581 0040 0453 0021 5rdquo 2900 2200

300 2120 0889 1420 0324 0930 0112 0698 0055 0543 0030 0352 0011 3480 3070

350 2470 1190 1660 0438 1080 0150 0815 0074 0634 0040 0411 0014 6rdquo 4070 4160

400 2830 1550 1900 0563 1240 0195 0935 0096 0724 0051 0469 0018 0341 0007 4650 5380

450 3180 1930 2130 0707 1390 0242 1050 0120 0815 0063 0528 0022 0366 0009 5230 6790

500 3540 2380 2370 0867 1550 0298 1170 0147 0902 0076 0587 0027 0407 0011

550 3880 2870 2610 1040 1700 0354 1280 0174 0991 0092 0645 0032 0447 0013

600 4240 3390 2840 1220 1860 0418 1400 0204 1090 0110 0704 0037 0488 0015

650 4590 5560 3080 1420 2010 0486 1510 0239 1180 0127 0762 0043 0529 0017

700 4950 4550 3320 1650 2170 0560 1630 0275 1270 0146 0821 0050 0569 0020

750 5300 5200 3560 1880 2320 0637 1750 0314 1360 0164 0879 0057 0610 0023

800 3790 2130 2480 0721 1860 0354 1450 0185 0936 0064 0651 0025 8rdquo

850 4030 2390 2630 0805 1980 0395 1540 0209 1000 0072 0692 0028 0403 0007

900 2790 0901 2090 0438 1630 0232 1050 0008 0732 0032 0427 0008

950 2940 1000 2210 0486 1720 0258 1120 0087 0773 0036 0451 0010

1000 3100 1110 2320 0534 1810 0284 1170 0096 0814 0039 0474 0011

1100 3410 1290 2560 0643 1990 0341 1290 0116 0895 0047 0522 0012

1200 3720 1 580 2800 0763 2170 0403 1410 0135 0974 0055 0569 0015

1300 3030 0890 2360 0473 1530 0157 1060 0063 0616 0017

1400 3260 1020 2540 0544 1640 0183 1140 0072 0664 0019

1500 3490 1170 2720 0617 176 0208 1220 0083 0712 0022

1600 3720 1330 2890 0697 1880 0234 1300 0093 0758 0025

1700 10rdquo 3950 1490 3080 0784 1990 0260 1380 0104 0806 0028

1800 0546 0010 3260 0875 2110 0290 1470 0116 0854 0032

1900 0575 0012 3440 0965 2230 0323 1550 0129 0901 0034

2000 0606 0012 3617 1060 2340 0356 1630 0143 0946 0037

2200 0667 0015 3980 1280 2580 0429 1790 0172 1050 0045

2400 0727 0017 12rdquo 2820 0507 1950 0200 1140 0053

2600 0788 0021 0563 0009 3050 0589 2110 0234 1230 0061

2800 0848 0023 0606 0010 14rdquo 3280 0676 2280 0268 1330 0070

3000 0909 0026 0649 0011 0532 0007 3520 0773 2440 0306 1420 0080

3500 1060 0035 0760 0015 0620 0009 4110 105 2850 0416 1660 0108

4000 1210 0045 0866 0020 0709 0012 16rdquo 4690 135 3250 0532 1900 0139

4500 1360 0056 0976 0025 0798 0015 0606 0007 3660 0674 2130 0173

5000 1520 0069 1080 0029 0886 0018 0674 0009 4070 0822 2370 0212

6000 1810 0097 1290 0042 1070 0026 0808 0013 18rdquo 4880 1160 2850 0301

7000 2120 0130 1510 0055 1240 0035 0940 0017 0741 0010 5690 1580 3310 0403

8000 2420 0168 1730 0072 1420 0045 1080 0022 0847 0012 6510 2050 3790 0525

9000 2730 0210 1950 0091 1600 0056 1210 0027 0954 0015 4270 0659

10000 3030 0257 2170 0111 1770 0067 1350 0033 1050 0019 4740 0801

Legend Q Water Flow Rate (Lpm) V Velocity (ms) Y Specific Pressure Drops (bar100m)Water at ambient temperature in straight pipe

SPECIfIC PRESSURE DROPS fOR WATER fLOW IN CLEAN STEEL PIPE SCH 10S

Q V Y V Y V Y V Y V Y V Y V Y V Y [lm] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m]

PIPI

NG

77wwwpnr-nozzlescomCTG SH 07 EU

SPECIfIC PRESSURE DROPS fOR WATER fLOW IN CLEAN STEEL PIPE SCH 40S

Legend Q Water Flow Rate (Lpm) V Velocity (ms) Y Specific Pressure Drops (bar100m)Water at ambient temperature in straight pipe

18rdquo 14rdquo

1 0458 0726 0251 0170 38rdquo 12rdquo

2 0918 2590 0501 0600 0272 0136 0170 0044 34rdquo

3 1380 5590 0752 1220 0407 029 0255 0091 0144 0023 1rdquo

4 1840 9570 1000 2090 0543 048 0340 0151 0192 0038 0120 0012

5 2290 14450 1250 3180 0679 070 0425 0223 0241 0057 0150 0017

6 1500 4460 0815 0980 0510 0309 0289 0077 0180 0024 114rdquo

8 2010 7360 1090 1690 0680 0524 0385 0129 0240 0041 0138 0011 112rdquo

10 1360 2520 0850 0798 0481 0193 0300 0061 0172 0015 0127 0008

15 2040 5370 1280 1690 0722 0403 0450 0124 0258 0032 019 0015

20 2rdquo 2720 9240 1700 2840 0962 0683 0600 0210 0344 0054 0254 0026

30 0231 0016 212rdquo 2550 6170 1440 1450 0900 0442 0517 0114 038 0053

40 0308 0027 0216 0010 3400 10720 1920 2500 1200 0758 0689 0193 0507 0091

50 0385 0039 0270 0017 2410 3830 1500 1140 0861 029 0634 0135

60 0462 0055 0324 0023 2890 5410 1800 1610 103 0400 0761 0187

70 0539 0098 0378 0031 3rdquo 3370 7270 2100 2150 1210 0541 0888 0248

80 0616 0092 0432 0039 028 0014 312rdquo 2400 2760 1380 0690 1010 0315

90 0693 0115 0486 0048 0315 0017 0235 0008 2700 3470 1550 0862 1140 0397

100 0770 0141 0540 0059 035 002 0261 0010 4rdquo 3000 4250 1720 1050 1270 0488

150 1150 0295 0810 0125 0524 0042 0392 0021 0304 0011 4500 9300 2580 2260 1900 1030

200 1540 0512 1080 0212 0699 0072 0523 0036 0405 0019 3440 3910 2540 1810

250 1920 0773 1350 0322 0874 0108 0653 0053 0507 0028 5rdquo 3170 2740

300 2310 1100 1620 0449 105 0152 0784 0074 0608 004 0387 0014 3800 3820

350 2690 1470 1890 0606 122 0203 0915 0099 0710 0053 0452 0018 6rdquo 4440 5180

400 3080 1920 2160 0780 14 0264 1050 0128 0811 0068 0516 0023 0375 0009 5070 6690

450 3460 2390 2430 0979 157 0328 1180 0161 0912 0084 0581 0028 0402 0012 5710 8450

500 3850 2950 2700 1200 175 0403 1310 0196 1010 0101 0646 0034 0447 0014

550 4230 3550 2970 1440 192 0479 1440 0232 1110 0122 0710 0041 0491 0016

600 4620 4200 3240 1690 2100 0566 1570 0273 1220 0146 0775 0047 0536 0019

650 5000 6880 3510 1970 2270 0658 1700 0319 1320 0169 0839 0055 0581 0022

700 5390 5630 3780 2280 2450 0759 1830 0368 1420 0194 0904 0063 0625 0025

750 577 6440 4050 2600 2620 0863 1960 042 1520 0218 0968 0072 067 0029

800 4320 2950 2800 0977 2090 0473 1620 0246 1030 0081 0715 0032 8rdquo

850 4590 3310 2970 1090 2220 0528 1720 0277 1100 0091 076 0036 0439 0009

900 3150 1220 2350 0585 1820 0308 1160 0100 0804 0041 0465 001

950 3320 1350 248 0649 1930 0342 1230 0111 0849 0045 0491 0012

1000 3500 1500 261 0714 2030 0377 1290 0122 0894 0049 0516 0013

1100 3850 1750 2870 0860 2230 0452 1420 0147 0983 0059 0568 0015

1200 4200 2140 3140 1020 2430 0534 1550 0172 1070 0069 0620 0018

1300 3400 1190 2640 0627 1680 0200 1160 008 0671 0021

1400 3660 1370 2840 0722 1810 0232 1250 0091 0723 0024

1500 3920 1560 3040 0818 1940 0264 1340 0105 0775 0027

1600 4180 1780 3240 0924 2070 0297 1430 0118 0826 0031

1700 10rdquo 4440 1990 3450 1040 2190 0331 1520 0132 0878 0035

1800 0590 0012 3650 1160 2320 0369 1610 0147 0930 0039

1900 0622 0014 3850 1280 2450 041 1700 0163 0981 0042

2000 0655 0015 40500 1410 2580 0452 1790 0181 1030 0046

2200 0721 0018 4460 1700 2840 0545 1970 0217 1140 0056

2400 0786 0021 12rdquo 3100 0645 2140 0253 1240 0065

2600 0852 0025 0600 001 3360 0749 2320 0296 1340 0076

2800 0917 0028 0646 0012 14rdquo 3610 0859 2500 0339 1450 0087

3000 0983 0032 0692 0013 0573 0008 3870 0982 268 0387 1550 0099

3500 1150 0043 0810 0018 0668 0011 4520 1330 3130 0526 1810 0134

4000 1310 0055 0923 0023 0764 0014 16rdquo 5160 1720 3570 0673 2070 0172

4500 1470 0068 1040 0029 0860 0018 0658 0009 4020 0853 2320 0214

5000 1640 0084 1150 0034 0955 0022 0731 0011 4470 1040 2580 0262

6000 1960 0118 1380 0049 1150 0031 0877 0016 18rdquo 5360 1470 3100 0373

7000 2290 0158 1610 0065 1340 0042 1020 0021 0808 0012 6250 2000 3610 0499

8000 2620 0204 1840 0085 1530 0054 1170 0027 0924 0015 7150 2590 4130 065

9000 2950 0256 2080 0107 1720 0067 1310 0033 1040 0019 4650 0816

10000 3280 0313 2310 0130 1910 0081 1460 0041 1150 0023 5160 0992

Q V Y V P V Y V Y V Y V Y V Y V Y [lm] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m]

PIPI

NG

78 wwwpnr-nozzlescom CTG SH 07 EU

10 75 12 038 4 11 50

15 80 12 044 4 11 55

20 90 14 065 4 11 65

25 100 14 082 4 11 75

32 120 14 117 4 14 90

40 130 14 139 4 14 100

50 140 14 162 4 14 110

65 160 14 214 4 14 130

80 190 16 343 4 18 150

100 210 16 422 4 18 170

125 240 18 611 8 18 200

150 265 18 751 8 18 225

175 295 20 1020 8 18 255

200 320 20 1230 8 18 280

250 375 22 1850 12 18 335

300 440 22 2550 12 22 395

350 490 22 3180 12 22 445

400 540 22 3850 16 22 495

450 595 22 4700 16 22 550

500 645 24 6040 20 22 600

PN 6 (UNI 6091)

ND 6 (DIN 2527) DN Flange Holes

D t W N Oslash a

90 14 063 4 14 60

95 14 071 4 14 65

105 16 101 4 14 75

115 16 122 4 14 85

140 16 180 4 18 100

150 16 209 4 18 110

165 18 287 4 18 125

185 18 365 4 18 145

200 20 461 8 18 160

220 20 565 8 18 180

250 22 812 8 18 210

285 22 1050 8 22 240

315 24 1410 8 22 270

340 24 1620 12 22 295

405 28 2510 12 25 355

460 28 3520 12 25 410

520 30 4820 16 25 470

580 32 6350 16 30 525

640 32 7720 20 30 585

715 34 1020 20 33 650

PN 16 (UNI 6093)

ND 16 (DIN 2527) Dimensions Holes

D t W N Oslash a

ND 10 (DIN 2527) Dimensions Holes

D t W N Oslash a

90 14 063 4 14 60

95 14 071 4 14 65

105 16 101 4 14 75

115 16 122 4 14 85

140 16 180 4 18 100

150 16 209 4 18 110

165 18 287 4 18 125

185 18 365 4 18 145

200 20 461 4 18 160

220 20 565 8 18 180

250 22 812 8 18 210

285 22 1050 8 22 240

315 24 1410 8 22 270

340 24 1650 8 22 295

395 26 2410 12 22 350

445 26 3080 12 22 400

505 26 3960 16 22 460

565 26 4960 16 25 515

615 26 5860 20 25 565

670 28 7530 20 25 620

PN 10 (UNI 6092)

LegendaDN Nominal DiameterD Flange External Diametert Flange ThicknessW Flange WeightN Hole NumberOslash Hole Diametera Hole axis

PIPING Flange dimensionsPI

PIN

G

Blind flanges to DIN 2527

79wwwpnr-nozzlescomCTG SH 07 EU

LegendDN Nominal DiameterD Flange External Diametert Flange ThicknessW Flange WeightN Hole NumberOslash Hole Diametera Hole axis

12rsquorsquo 889 111 08 4 159 603

34rsquorsquo 984 127 09 6 159 698

1rsquorsquo 1079 143 10 4 159 794

114rsquorsquo 1175 159 13 4 159 889

112rsquorsquo 1270 175 14 4 159 984

2rsquorsquo 1524 190 18 4 190 1206

212rsquorsquo 1778 222 32 4 190 1397

3rsquorsquo 1905 238 41 4 190 1524

312rsquorsquo 2159 238 59 8 190 1778

4rsquorsquo 2286 238 77 8 190 1905

5rsquorsquo 2540 238 91 8 222 2159

6rsquorsquo 2794 254 118 8 222 2413

8rsquorsquo 3429 286 204 8 222 2984

10rsquorsquo 4064 302 318 12 254 3619

12rsquorsquo 4826 317 500 12 254 4318

14rsquorsquo 5334 349 600 12 286 4762

16rsquorsquo 5969 365 770 16 286 5397

18rsquorsquo 6350 397 950 16 317 5778

20rsquorsquo 6985 429 1230 20 317 6350

22rsquorsquo 7493 460 1510 20 349 6921

ANSI 150 lb DN Flange Holes

D t W N Oslash a

952 143 10 4 159 667

1175 159 14 4 190 825

1238 175 18 4 190 889

1333 206 27 4 190 984

1556 222 36 4 222 1143

1651 254 45 8 190 1270

190S 286 68 8 222 1492

209S 317 91 8 222 1683

2286 349 132 8 254 1841

2540 349 150 8 254 2000

2794 381 200 8 254 2349

3175 413 277 12 254 2699

3810 476 450 12 286 3302

4445 540 700 16 317 3873

5207 571 103 16 349 4508

5842 603 141 20 349 5143

6477 635 181 20 381 5715

7112 667 228 24 381 6286

7747 698 282 24 413 6858

8382 730 311 24 444 7429

ANSI 400 lb Dimensions Holes

D t W N Oslash a

ANSI 300 lb Dimensions Holes

D t W N Oslash a

952 143 10 4 159 667

1175 159 14 4 190 825

1238 175 18 4 190 889

1333 190 27 4 190 984

1556 206 32 4 220 1143

1651 222 36 8 190 1270

1905 254 54 8 222 1492

2095 286 73 8 222 1683

2286 302 95 8 222 1841

2540 317 122 8 222 2000

2794 349 159 8 222 2349

3175 365 227 12 222 2699

3810 413 370 12 254 3302

4445 476 580 16 286 3873

5207 508 840 16 317 4508

5842 540 1070 20 317 5143

6477 571 1390 20 349 5715

7112 603 3900 24 349 6286

7747 635 2230 24 349 6858

8382 667 2700 24 413 7429

PIPING Flange dimensions

PIPI

NG

flanges to ANSI norms

80 wwwpnr-nozzlescom CTG SH 07 EU

PIPI

NG

Sieves are used both for determining the particle size distribution of a granular material and to filter solid particles in a liquid Normally the sieve is made with a fabric whose characteristic dimensions areL is the Opening Width (free passage)D is the Diameter of the wireP is the Pitch of the wireS is the Thickness of the fabricTo classify particle sizes there is some Sieve Series according to specific standardsthe most known are Tyler Sieve Series US Sieve Series UK Sieve SerieshellipThe Tyler mesh size indicates exactly the number of openings per linear inch of mesh

L[microm]

TYLER Sieve[Mesh No]

ASTM E11 Sieve[Mesh No]

BS 410 Sieve[Mesh No]

DIN 4188 Sieve[mm]

5 2500 2500 0005

10 1250 1250 0010

15 800 800 0015

20 625 635 625 0020

22 0022

25 500 500 500 0025

28 0028

32 na 450 440 0032

36 0036

38 400 400 400

40 0040

45 325 325 350 0045

50 0050

53 270 270 300

56 0056

63 250 230 240 0063

71 0071

75 200 200 200

80 0080

90 170 170 170 0090

100 0100

106 150 140 150

112 0112

125 115 120 120 0125

140 0140

150 100 100 100

160 0160

180 80 80 85 0180

200 0200

In the german standard (DIN norm 4188) the Opening Width (L) is given in millimeters

PIPING Sieve size conversion chartPI

PIN

G

81wwwpnr-nozzlescomCTG SH 07 EU

L[microm]

TYLER Sieve[Mesh No]

ASTM E11 Sieve[Mesh No]

BS 410 Sieve[Mesh No]

DIN 4188 Sieve[mm]

212 65 70 72

250 60 60 60 0250

280 0280

300 48 50 52

315 0315

355 42 45 44 0355

400 0400

425 35 40 36

450 0450

500 32 35 30 0500

560 0560

600 28 30 25

630 0630

710 24 25 22 0710

800 0800

850 20 20 18

900 0900

1000 16 18 16 1000

1120 1120

1180 14 16 14

1250 1250

1400 12 14 12 1400

1600 1600

1700 10 12 10

1800 1800

2000 9 10 8 2000

2240 2240

2360 8 8 7

2500 2500

2800 7 7 6 2800

3150 3150

3350 6 6 5

3550 3550

4000 5 5 4 4000

4500 4500

4750 4 4 35

5000 5000

5600 35 35 3

6700 3 0265 in 1

8000 25 516 in na

Applicable standards areISO 565 (1987) ISO 3310 (1999) ASTM E 11-70 (1995)DIN 4188 (1977) BS 410 (1986) AFNOR NFX11-501 (1987)

Legend Q Water Flow Rate V Velocity P Pressure drop Pressure drop in bar per 100 meters of straight pipe (water at ambient temperature)

PIPING Sieve size conversion chart

PIPI

NG

Besides its main range of nozzles for industrial applications PNR manufactures a wide range of complementary products and systems to optimize the use of spray jets and fluids control in most of the modern industrial processes

PNR PRODUCT RANGE

CTG AC

CTG LS

CTG UG

CTG AZ

Complementary Products andAssembly FittingsA complete line of nipples clamps swivel joints and everything that helps you to assemble align and service your spraying systems quickly and easilyAir blowers mixing eductors filters clean-ing guns and lances hose reels steam heaters pressure tanks quick couplings to help you build up a professional system upgraded to the latest standards

Tank washing systemsA complete range from simple fixed washing heads to the two-axis heads from mushroom nozzles to fluid driven reaction heads up to the motor driven washing heads equipped with a pneu-matic or electric motorAll for the inside cleaning of industrial tanks according to the latest technology accessories included

Spray nozzles for industrial applicationsOne of the world most complete lines of nozzles for numberless industrial appli-cations Nozzles with a wide openings range various types of vanes several spray patterns anti-clog design available in small and big dimensions and made in many food-grade materials like PFTE and Stainless Steel 316L with threaded and flanged connections

Air assisted atomizersUltrasonic classic and automatic atomiz-ers for the finest atomization in any insus-trial process High quality machining and strict quality control ensure your systems top professional resultsProgramming and control panels for an easy assembly of complete humidification systems

CTG SP

CTG PM

CTG SW

CTG LN

Spraydry nozzlesAir assisted or hydraulic high pressure ato-mizers made in high-quality metal alloys or tungsten carbideA complete line of nozzles for the moder-nization of existing facilities at competitive prices To ensure highly accurate results and a long service life these nozzles are manufactured with the finest materials and technologically advanced machines

Paper mill productsA line of products specifically designed for perfect results on paper mill machines including disc nozzles patented for self-cleaning filters flat jet nozzles with orifices in sapphire ruby and ceramic oscillating tubes equipped with a computer driven motor

Steelwork nozzlesA complete line of nozzles for steelwork applications including continuous casting air atomizers and conventional nozzles descaling nozzles for high pressure sys-tems dovetail tips for cylinders cooling and high capacity flanged nozzles for coke quenching

Gas cooling lancesSpillback or air assited lances for gas coo-ling in steelworks cement plants and other industrial applicationsWe can supply spare parts upgrade your plant and even supply a complete PLC driven system to enhance the towers per-formances to the highest efficiency level allowed by today technology

wwwpnr-nozzlescomCTG SH 07 EU

CTG SH 07 EUwwwpnr-nozzlescom

STAM

PATO

IN E

U 09

09

copy B

ellamp

Tany

Our products are distributed through

We are also represented in

PNR AmericaPNR Asia

PNR BalticPNR Benelux

PNR ChinaPNR Czech Republic

PNR DeutschlandPNR France

PNR ItaliaPNR Mexico

PNR UK

ArgentinaAustraliaAustriaBrazil

BulgariaCanada

ChileCroatia

DenmarkFinlandGreece

IndiaIndonesia

IranIrelandKorea

MalaysiaNorway

New ZealandPakistan

PhilippinesPoland

Portugal

RumeniaRussiaSerbia

SingaporeSlovenja

SpainSouth Africa

SwedenTaiwanTurkey

Venezuela

Page 13: SPRAY CTG SH 07 EU ENGINEERING HANDBOOK

13wwwpnr-nozzlescomCTG SH 07 EU

PNR CODING SYSTEM

As any other industrial product spray nozzles need to be precisely identified by means of a code in order to avoid mistakesPNR coding system has been designed with the following requirements in mind

Codes must be easily processed by a computer in ascending orderbullCodes must describe completely the product without any need for additional descriptionbullCodes must show to the user the basic specifications of the nozzle in order to ease the search in the cataloguebull

We have therefore determined our coding system described as follows

LIQUID SPRAY AND SPRAY NOZZLES Spray nozzle coding

LIQU

ID S

PRAY

AND

SPRA

Y NO

ZZLE

S

AA U X YB312 305

Thread type or other connection

Special features

Nozzle material code (see below)

The three digits give the nozzle capacity in lpm at 3 bar according to rank value

Rank of flow value see table below

Nozzle spray angle see table below

Nozzle type as described in the catalogue pages shown in ascending order

Nozzle tables report on a blue background the nominal flow value measured at 30 barFlow values at different pressures have been calculated

These codes serve as an indication onlyBased on different types of nozzles their significance can occasionally be different

CAPACITY RANK

Rank Flow digits Actual flow (lmin)

0 0 490 049

1 1 490 490

2 2 490 490

3 3 490 490

4 4 490 4900

SOME SPRAY ANGLE CODES (DEGREES)

A = 0 L = 40 T = 80

B = 15 M = 45 U = 90

C = 20 N = 50 J = 110

D = 25 Q = 60 W = 120

F = 30 R = 65 Y = 130

H = 35 S = 75 Z = 180

A1 Carbon steel D6 Glassfibre reinforced PP L2 Incolloy 825

A2 High speed steel D7 High density polyethilene L8 Hastelloy C276

A8 Zinc coated steel D8 Polyvinylidenefluoride (PVDF) P6 Acr But Styrene (ABS)

A9 Nickel coated steel E0 EPDM P8 EPDM 40 Shore

B1 AISI 303 Stainless steel E1 Polytetrafluorethylene (PTFE) T1 Brass

B2 AISI 304 Stainless steel E2 PTFE (25 glassfibers) T2 Brass chrome plated

B21 AISI 304 L Stainless steel E31 Acetalic resin (POM) T3 Copper

B3 AISI 316 Stainless steel E7 Viton T5 Bronze

B31 AISI 316 L Stainless steel E8 Synthetic rubber (NBR) T8 Brass nickel plated

C2 AISI 416 Stainless steel hardened F5 Ceramic T81 Brass electroless nickel plated

D1 Polyvinylchloride (PVC) F31 Ruby insert 303 body V1 Aluminum

D2 Polypropylene (PP) G1 Cast iron V7 Aluminum electroless n plated

d3 Polyamide (PA) H1 Titanium

D5 Talcum filled Polypropylene L1 Monel 400

NOZZLE MATERIAL CODES

14 wwwpnr-nozzlescom CTG SH 07 EU

LIQUID SPRAY AND SPRAY NOZZLES Computerized fluid dynamics

The customers demand for an always higher efficiency requires to use not only the best tooling but in addition control instruments and design methods always more sophisticated like for example new software for obtaining the velocity distribution of a fluid flowing through a conduit

These software programs require that the geometry of the inner con-duit to be geometrically defined and in addition the process conditions ( pressure temperature fluid capacity ) and the fluid properties ( specific weight viscosity ) to be Introduced

Based on the above data it is pos-sible to obtain a very precise dis-tribution for the velocity value in each single point of the conduit both under numeric form and flow diagramsThese Information make it possi-ble as an example to minimize the flow turbulence and consequently to Increase the nozzle efficiency through an increase in the fluid exit velocityThis is of basic Importance for some kind of nozzles for example those nozzles required to supply an high impact jet when performing descal-ing processes in a rolling millBy trial and error it is also possible to eliminate problems like jet Instability or cavitation

The overall process efficiency in the flow path before the nozzle can also be considered which often results into the design of geometry modifi-cation or the Introduction of special flow improving profiles along the conduit

LIQU

ID S

PRAY

AND

SPRA

Y NO

ZZLE

S

15wwwpnr-nozzlescomCTG SH 07 EU

LIQU

ID S

PRAY

AND

SPRA

Y NO

ZZLE

S

The diagram on the right shows the idealization of the process generating the droplets while the water jet exiting the nozzle is breaking up The theoretical model whose exactitude seems to be confirmed by scientific research considers that the liquid flowing through the nozzle and past the orifice edge evolves into a liquid lamina This lamina because of instability induced by aerodynamic forces breaks up first into elongated ligaments more or less cylindrical and later into droplets

Taking the above process as a guideline one can easily appreciate that the average droplet diameter is some what related to several factors like

1 The thickness of the lamina itself2 The evenness of the lamina 3 A steady flow and break up process

For what has been said above and limited to hydraulic nozzles the system designer looking for fine droplet sprays should consider that the following results can be expected

Impact nozzles best

Centrifugal hollow cone nozzles multiple full cone nozzles good

Turbulence nozzles fair

Centrifugal Vaneless full cones worst

The above choice is obviously based on the droplet generation process which changes from one nozzle type to another and allows to forecast which type is best fro the applicationAn additional consideration of interest is that the expected droplet size changes for the same type of nozzle with the nozzle size it is possible to generate smaller drops spraying the same water quantity at the same pressure using a greater number of smaller nozzles

In cases where energy requirements are not a problem or where a specified small droplet diameter is required the smal-lest droplets can be obtained by means of an air assisted atomizerHere the shear action of a high speed compressed air flow is used with several different techniques to obtain a value for SMD (Sauter Mean Diameter) of 50 microns and less

LIQUID SPRAY AND SPRAY NOZZLES Spray generation

Theoretical Mechanism of droplet generation

16 wwwpnr-nozzlescom CTG SH 07 EU

LIQU

ID S

PRAY

AND

SPRA

Y NO

ZZLE

SLIQUID SPRAY AND SPRAY NOZZLES Droplet spectrum

The atomization of a liquid by means of a compressible fluid like air steam or a gas is defined pneumatic two-phase or twin-fluid atomization Many industrial processes require the availability of finely atomized droplets and the techniques to produce atomized jets have been largely improved in the recent years In addition more sophisticated process techniques have incre-ased the demand for a precise definition about the characteristics of the spray and are now available to the design engineer Since many years PNR can supply upon request complete documentation containing test reports about the more interesting and additional information which are described below for all PNR products

Laser Interpherometer Test (By Pdpa)

PNR droplet size test reports are performed by means of a Laser Interpherometer (Phase Doppler Particle Analyzer) where two laser beams cross in a given point of the spray and define a test probe area Droplet flying through the probe area cause a light scatter which is picked up by the instrument receiver and processed through a computer in order to obtain relevant information about the spray characteristics

Report information

Report information is made of data printed on three pages where the first page contains the most interesting data which make possible to base process calculations upon precise data about spraying degrees process efficiency and jet behavior in operational ambiance These pages contain the Sauter Mean Diameter value whose knowledge is of special importance in heat exchange calculations about evaporative gas cooling processes since it gives the possibility of evaluating the exchange surface obtained by atomizing for a given liquid volume

The upper picture at page 18 referring to atomizing water by means compressed air shows two following histograms

bull Distribution curve of droplet diameter (micron)

bull Distribution curve of droplet velocities (mps)

and the below described values

bull Arithmetic Mean Diameter (D10)

bull Surface Mean Diameter (D20)

bull Volume Mean Diameter (D30)

bull Sauter Mean Diameter (D32)

ARITHMETIC MEAN DIAMETERThis is a diameter value which multiplied by the local num-ber of droplets in the sample equals the addition of alI droplets diameters

SURFACE MEAN DIAMETERThis is the diameter of such a droplet whose surface mul-tiplied by the total droplets number equals the sum of alI droplets surfaces

VOLUME MEAN DIAMETERThis is the diameter of such a droplet whose volume mul-tiplied by the total droplets number equals the sum of all droplets volumes

SAUTER MEAN DIAMETERThis is the diameter of such a droplet whose volumearea ratio equals the ratio between the sum of alI droplet volu-mes divided by the sum of alI droplet surfaces

D10 = Σ i ni di

Σ i ni

D20 = Σ i ni di

2

Σ i ni

D30 = Σ i ni di

3

Σ i ni

D32 = Σ i ni di

3

Σ i di

2

3

17wwwpnr-nozzlescomCTG SH 07 EU

AttemptsDroplet number crossing probe area during test time This includes both validated and not validated droplet

Correct Count Criteria A mathematic correction is applied to validate droplets which cross Probe Area in a peripheral belt or to droplets without a perfect spherical shape so that alI validated droplets parameters are homogeneous (This correction is necessary so that there is direct proportionally between laser beam phase and droplet number diameter)

Number Density It is the number of droplets passing through probe area within test time

Probe areaThis is the area where the two laser beams are crossing so determining the probe area AlI droplets intersecting probe area are checked droplets which respect given parameters for shape are taken as valid droplets and make up the sample whose size and velocity parameters are reported

ValidationsDroplets accepted based on given shape parameters to make up for test sample

Velocity MeanDroplets distribution speed histogram (ms)

Volume Flow RateIt is the volume measured in cubic centimeter per second of the validated droplets making up for the sample

Volume FluxIt is the flow rate per specific area measured in cubic centimeter per second and square centimeter of the validated droplets making up the sample

LIQU

ID S

PRAY

AND

SPRA

Y NO

ZZLE

S

LIQUID SPRAY AND SPRAY NOZZLES Droplet spectrum

18 wwwpnr-nozzlescom CTG SH 07 EU

LIQU

ID S

PRAY

AND

SPRA

Y NO

ZZLE

SLIQUID SPRAY AND SPRAY NOZZLES Droplet spectrum

PNR can supply upon request complete documentation con-taining test reports about the aforementioned parameters and additional information for all PNR atomizersThe diagrams beside show the distribution of droplet diameters and droplet velocities of a spray under test as available to our customers

In the photo beside a test being performed at our laboratoriesWe use a computer driven laser interpherometer to detect and record the spray parameters while fluid capacities and feed pressure values are monitored through high precision instru-ments

IMPORTANT NOTE

The droplet size values measured with a PDPA instrumentation are representative of a well specified volume inside the spray and taking measurements in a different volume they can be considerably differentA correct spray droplet size characterization requires then not only tests being performed in several volumes within the spray but also that those measure volumes are selected with regard to the process the droplets are expected to performAs an example the droplet characterization of a spray should define how many volumes have been tested and which are the coordinates of each single test volume in relation to the nozzle orifice

Most of the times pretending to describe the droplet spectrum of a spray nozzle at a given pressure with only one diagram is therefore not correct

19wwwpnr-nozzlescomCTG SH 07 EU

In order to calculate the discharge flow rate from a given nozzle the Bernoulli law shall be used which says that the energy of a liquid flow remains unchanged over alI the sections of the flow Friction and turbu-lence losses are neglected which is reasonable for our purposes if the cal-culation is performed over two sections not too far away from each other

The Bernoulli law can be written as follows

Therefore if we consider two sections of the same pipe section A and section B we can write that the flow energy remains constant in the form

If we finally consider that the two above sections are taken immediately before and immediately after the nozzle outlet orifice being

ZA = ZB PB = 0 (PA is a differential pressure referred at the atmosphere pressure)

VA cong 0 negligible as compared to VB (for orifice diameter much smaller than the duct diameter)

we shall come to the formula

When we define a new constant k to include the value of the nozzle orifice outlet area (A) then we come to the following equation which says that for a nozzle spraying into a room at ambient pressure the exiting flow is proportional to the feed line pressure

Considering now two different pressure values for the same nozzle since k is a constant quantity we can write that

and derive from the above an equation that makes it possible to calculate the nozzle flow value at any given pressure value once the flow value at another pressure value is known

The energy of a given liquid flow crossing a given pipe section is composed of three parts namely

P Pressure energy of liquid particle per volume unit

1 ρV2 Kinetic energy of liquid particle per volume unit2ρgz Potential Energy of liquid particle per volume unit

Where ρ = density of liquid g = gravitational acceleration

z = height respect to one plane of reference V = liquid velocity

PA = 1 ρVB 2 rArr

2

K = Q rArr

PK =

Q1 = Q2 rArr

P1 P2

Q = A V rArr

Q = A x C x P rArr

1 P + 1 ρV2 + ρgz = E

2

VB = 2 PA rArr ρ

Q1 = P1

Q2 P2

3 V = C P

4 Q = K P

2 PA + 1 ρVA 2 + ρgzA = PB + 1 ρVB

2 + ρgzB 2 2

EXIT VELOCITY DEPENDS UPON PRESSURE

NOZZLE CAPACITY DEPENDS UPON PRESSURE

NOZZLE CAPACITYAT A DIFFERENT PRESSURE

5 Q2 = Q1 P2

P1

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S

LIQUID SPRAY AND SPRAY NOZZLES Nozzle flow rate

20 wwwpnr-nozzlescom CTG SH 07 EU

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SLIQUID SPRAY AND SPRAY NOZZLES Nozzle flow rate

The Equation (5) has been obtained after having simplified the real problem neglecting several factors like for examplebullInmostofthepracticalapplicationcasestheflowisturbulentandnotlaminarbullFrictionlossestendtostronglyincreasewithliquidvelocitybullDependinguponthetypeofnozzleadifferentpercentageoftheavailableenergyisusedtobreakupthejetandgivethe

desired spray pattern and spray angle

For the above reason equation (5) gives reliable results if used in a limited pressure range around the pressure value where the flow rate is known with this pressure range depending upon the type of nozzleOur experience has shown that one can expect the error in the calculated value to be lower than +- 6 for pressure values ranging from 13 to 3 times the reference value

As an example a nozzle rated for 10 lpm at 3 bars would have according to equation (5) the following flow valuesa 1 bar 577 lpma 9 bar 173 lpmin real conditions it can be expected the flow rate values to beas high as 61 lpm a 1 baras low as 162 lpm a 9 barAbove considerations are to be used as a guideline only because of the many factors influencing real operations which have not been considered here for example liquid temperature viscosity and density

Possible percentage deviation from theoretical flow rate values

Also above mentioned percentage errors have to be understood for nozzles using part of the flow energy to produce wide angle spray patternsLower values can be expected for narrow angle nozzles impact nozzles and straight jet nozzles Laboratory tests and diagrams showing real flow rate values for each nozzles are used in practice when a precise result must be available

Nozzle discharge coefficient

With reference to equation (4) if we consider the pressure value to be equal to 1 (P = 1 bar) the flow rate of the nozzle becomes

K is a parameter widely used in the fire fighting industry

In some instances reference is made to the nozzle discharge coefficient or shortly to the nozzle coefficient to indicate the nozzle flow rate for a unitary pressure Of course for a given pressure value Pn the flow value will be

+ 6

+ 3

- 3

- 6

CAPACITY AT A GIVEN PRESSURE VALUEWHEN K KHOWN

NOZZLE CAPACITYFOR P=1 barQ = K P = K 1 = K

6 Qn = K Pn

21wwwpnr-nozzlescomCTG SH 07 EU

The spray angle is the opening angle which the nozzle jet of droplets forms at the moment when it leaves the nozzle orifice and it is one of the fundamental parameters for the choice of a given nozzleIn fact the amplitude of the spray angle determines in connection with the distance between the nozzle orifice and the target to be covered the spray coverage and the density of liquid sprayed with respect to the cover area See our Catalogue for description of the different nozzle spray patterns The table at the bottom of the page gives the theoretical spray width based on the nozzle spray angle and the distance from the nozzle orifice It is important to note that because of several factors like gravity forces and aerodynamic drag the spray angle value cannot be maintained but in in a limited distance normally up to 300 mm from the orifice For air assisted atomizers it is improper to use the term spray angle since no precise value can be measured Therefore the values given by Catalogues are to be intended as guidelines only

THEORETICAL SPRAY COVERAGE

at various distances from nozzle orifice

Spray 50 100 150 200 250 300 400 500 600 700 800 1000 Angle mm mm mm mm mm mm mm mm mm mm mm mm

15deg 13 26 40 53 66 79 105 132 158 184 211 263 25deg 22 44 67 89 111 133 177 222 266 310 355 443 30deg 27 54 80 107 134 161 214 268 322 375 429 536 35deg 32 63 95 126 158 189 252 315 378 441 505 631 40deg 36 73 109 146 182 218 291 364 437 510 582 728 45deg 41 83 124 166 207 249 331 414 497 580 663 828 50deg 47 93 140 187 233 280 373 466 560 653 746 933 60deg 58 116 173 231 289 346 462 577 693 808 924 1150 65deg 64 127 191 255 319 382 510 637 765 892 1020 1270 70deg 70 140 210 280 350 420 560 700 840 980 1120 1400 75deg 77 154 230 307 384 460 614 767 921 1070 1230 1530 80deg 84 168 252 336 420 504 671 839 1010 1180 1340 1680 90deg 100 200 300 400 500 600 800 1000 1200 1400 1600 2000 95deg 109 218 327 437 546 655 873 1090 1310 1530 1750 2180 100deg 119 238 358 477 596 715 953 1190 1430 1670 1910 2380 110deg 143 286 429 571 714 857 1140 1430 1710 2000 2290 2856 120deg 173 346 520 693 866 1040 1390 1730 2080 2430 2771 3464 130deg 215 429 643 858 1070 1290 1720 2150 2570 3002 3431 4289

WhereASCbull = Actual Spray CoverageTSCbull = Theoretical Spray CoverageASAbull = Actual Spray AngleTSAbull = Theoretical Spray AngleL bull = Spray Distances

TSC = 2 middot L middot ctan ( TSA )2

7

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LIQUID SPRAY AND SPRAY NOZZLES Spray angle

22 wwwpnr-nozzlescom CTG SH 07 EU

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SLIQUID SPRAY AND SPRAY NOZZLES Spray angle

Depending upon the nozzle design variations of feed pressure may have a great influence on the spray angle valueGenerally with increasing pressure turbulence full cone nozzles will produce narrower angles flat jet nozzles will show a wider angle spray while nozzles working on the deflection principle like spiral nozzles and K style flat jet nozzles will be less affected by pressure changesAll nozzles will not function properly with very low pressure values (from 05 bar down depending upon nozzle type ) with a marked decay in performance larger drops not well defined spray pattern lower spray angle values

The above pictures show spray angles for different nozzles and different pressure valuesShould your application strictly require that a given value of the spray angle is obtained under a given pressure value or pressure range of values please obtain a test report from our laboratories

Full cone nozze DDW 2235

Flat jet nozzleJCW 2245

Spiral nozzeECW 2230

Pressure 05 bar Pressure 05 bar Pressure 05 bar

Pressure 3 bar Pressure 3 bar Pressure 3 bar

Pressure 10 bar Pressure 10 bar Pressure 10 bar

Photo obtained with 120000s flashlight

picture 1

picture 4

picture 7

picture 2

picture 5

picture 8

picture 3

picture 6

picture 9

NotePicture 2 shows clearly the droplet generation mechanism as described at page 15

23wwwpnr-nozzlescomCTG SH 07 EU

Terms and definitions

A very important characteristic of a spray nozzle is a parameter called Spray Distribution which gives a precise information about how evenly the drops of the spray are distributed onto the area covered by the sprayIt is self understood that normally it is preferable to obtain the most even distribution possibleIn the past this was done through the visual examination of a diagram reporting the quantity of water contained for example in glass pipes aligned onto the spray coverage areaPnr has determined to obtain such a result in a scientific way through high technology instrumentation as shown in the pictures below showing one of our patternators and a typical distribution diagram

Now to the spray geometry and some definition letrsquos consider a nozzle with a capa-city Q at the pressure PAt every value for distance H which we call height of spray we can define a plane lsquonrsquo normal to the nozzle axis on which a line can define the intersection of the spray onto the planeThe area covered by the spray on the plane lsquonrsquo has a surface S depending from the following parametersa) Spray pattern Fb) Opening angle of the spray αc) Height of the spray H

We can then write S=S( F α H )

In case of a full cone nozzle S is a circle with diameter C and S = 0785 C2

The capacity of the nozzle flows through the surface S but each smaller area inside the surface S will probably have a different value for the flow passing through itWe introduce then the value of Specific Capacity q

1) Specific Capacity

The function q depends upon the single point (xy) in the section S and then

Determining the function q is however very expensive therefore in practice two different functions are used which give in most occurrences sufficient information

2) Linear Distribution

3) Angular distribution

part Qpart x

qx =

Diagram 1

q = limΔS 0

ΔQΔS

q = = f (x y H)part Qpart S

part Qpart φ

qφ =

ΔQ is the liquid flowing through a surface ΔSwhere ΔS is a fraction of the surface S

x and y are the local coordinates in the section planewhere H is the distance of the test surface from the nozzle orifice

partQ is the variation in capacitywhere partx is the variation of a generic linear coordinate

partQ is the variation in capacitywhere partφ is the variation of a generic angular coordinate

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LIQUID SPRAY AND SPRAY NOZZLES Spray Distribution

24 wwwpnr-nozzlescom CTG SH 07 EU

LIQUID SPRAY AND SPRAY NOZZLES Spray Distribution

Values extracted from these functions can characterize the spray and allow for drawing the diagrams defined as Distribution Curves

Analyzing the above curves it is possible to determine the type of water distribution along the spray coverage and the type of spray pattern like for example a full cone hollow cone flat or straight jet spray

Distribution measurement

The water distribution along the spray coverage is determined by means of an instrument called Patternator

A patternator consists of the following parts 1) Liquid collector2) Cell block3) Measure block4) Unloading block

The nozzle is above the instrument and it is orienta-ted in such a way the jet is collected into the upper liquid collectorThe liquid collector can be linear ( diagram 5 ) or round ( diagram 6 ) according to the test being runFrom the single parts in the collector the liquid is sent into the corresponding cells below (2)

The Measure block (3) determines the liquid content in each single cell then the unloading block (4) empties the instrument sending the liquid to the collection drain

There are two types of patternators

Analogic1 the different levels of liquid is visible through the transparent walls of the cells or pipes sometimes containing some kind of floating balls and a picture can be taken with a cameraDigital2 Delivering an automatic reading of the values in the cells the values being supplied as an electronic file from which a distribution curve can be easily obtained

Diagram 2 Linear distribution Diagram 3 Angular distribution

Diagram 4

Diagram 6 Circular collectorDiagram 5 Linear collector

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25wwwpnr-nozzlescomCTG SH 07 EU

LIQUID SPRAY AND SPRAY NOZZLES Spray Distribution

Normalizing distribution curve

The values obtained from the cells of the patternator showing the water quantity collected in the single cells allow for preparing a Distribution curve which can be given as a single line curve or as a row of vertical barsThese resemble the liquid level collected into the glass pipes of the old type instrumentation

The curves prepared based on the liquid level in the single cells still are not precise they depend in fact from the testing time the longer this time the larger the liquid quantity sprayedTo eliminate the influence of time from the test it is necessary to transform the effective curves to normalized curves

Normalized4) linear distribution

Normalized5) angular distribution

Please note that Maximum value is the one belonging to the series of values measured in the cellsIn addition to the distribution it is possible to normalize the intervals to with the following formulas

Normalized 6) linear interval

Normalized 7) angular interval

The linear normalized amplitude is defined inside an interval [-1 +1]The angular normalized amplitude is defined inside an interval [0+2π]

Diagram 7 Effective linear distribution curve Diagram 8 Effective angular distribution curve

Mx

xx q

q=δ

N

πθ

2=Δ

Diagram 9 Normalized linear distribution curve Diagram 10 Normalized angular distribution curve

qx is the linear distribution of a generic cellwhere qx

M is the maximum linear distribution measured

qφ is the linear distribution of a generic cellwhere qφ

M is the maximum linear distribution measured

2 is the normalized linear amplitude of the spraywhere N is the number of active cells (active cells = cells containing liquid)

2π is the normalized angular amplitude of the spraywhere N is the number of active cells (active cells = cells containing liquid)

Mq

q

ϕ

ϕϕδ =φ

φ

φ

2

N=Δλ

2

N=Δλ

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26 wwwpnr-nozzlescom CTG SH 07 EU

Evaluation of spray distribution

To evaluate distribution curves it is necessary to take three properties into consideration

a) UNIFORMITY b) MONOTONY c) SIMMETRY

As described in the following diagrams and definitions

a) UNIFORM A distribution that minimizes the ratio AAdeg

b) MONOTONE Is a distribution with a curve which grows on the left side and decreases on the left side c) SYMMETRIC Is a distribution which minimizes the Ratio A+A-

Based on the above definitions the following curves show the ideal situations

The three properties are then evaluated by means of the following parameters

1 Integral uniformity

2 Incremental uniformity

3 Symmetry index

Complete details about the above formulas and definition can be found in our Technical Bulletin REL 080002 which shall be released from our Technical Department on request

Diagram 12Normalized and monotone distribution

Diagram 11Normalized and monotone distribution

Diagram 14Ideal monotony

Diagram 15Ideal symmetry

Diagram 13Ideal uniformity

1001 sdot=MA

AU

1002

2 sdot=lowastσ

U

1001

sdot⎥⎦

⎤⎢⎣

sdotminus=

lowast

lowast

δ

ε

NI S

sum minus=lowast

M

i iδδε

A is the area included in the normalized curvewhere Adeg is the rest of the area included in the 2x1 rectangle

Left side is the area -1 0where Right side is the area 0 +1

A+ is the area included below the curve on the right sidewhere A- is the area included below the curve on the left side

where

where δrsquo is the value of normalized liquid content in the symmetric cell N number of cells containing liquid in half of the diagram

lowast

lowast sum=

N

N

i i

δ

δ N Number of cells containing liquid

A area included below the curve AM area included below the ideal curvewhere

sum minus= +lowast

1

N

i ii δδσ

N Number of cells containing liquid

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SLIQUID SPRAY AND SPRAY NOZZLES Spray Distribution

27wwwpnr-nozzlescomCTG SH 07 EU

Liquids are characterized for their property of undergoing continuous deformation when subjected to shear stress The property of fluids (liquids or gases) to resist flowing due to the existence of internal friction within the fluid is called visco-sity

Thus if we imagine the different layers of fluid sliding one over the other with friction we can imagine that viscosity is defined the force required to move a unit area of fluid for a unit distance Viscosity is measured with many different systems among which the most used are the following

The following table shows correspondences between the most used viscosity units

The viscosity value of a liquid depends upon the temperature therefore the viscosity value must always be given with reference to a temperature value The viscosity of water (20deg C) is 1 Centipoise and 1 Centistoke since water mass density = 1

KINEMATIC SAYBOLT SAYBOLT ENGLER VISCOSITY UNIVERSAL FUROL

Centistoke Sq feetsec SSU SSF Degrees

100 000001076 310 --- 100

500 000005382 424 --- 137

1000 00001076 588 --- 183

1566 00001686 80 --- 245

2052 00002209 100 --- 302

2515 00002707 120 --- 357

4295 00004623 200 --- 592

1080 0001163 500 523 1460

1510 0001625 700 720 2044

1942 0002090 900 921 2628

3023 0003254 1400 143 4090

3885 0004182 1800 183 5260

5394 0005806 2500 254 7300

10788 001161 5000 509 146

15103 001626 7000 712 204

19419 002092 9000 916 263

32365 003483 15000 1526 438

METHOD UNIT DIMENSIONS NOTES

1 Dynamic viscosity(Absolute viscosity) Poise ML T-1 Poise = 100 Centipoises = (1 dyne per seccm2)

2 Kinematic viscosity Stoke L2 T-1 1 Stoke = 100 Centistoke = (cm2sec)Kinematic viscosity = Dynamic viscositydensity

3 SSUSSF

One of the most widely instruments to determine is the Saybolt viscosimeter which measures the time in seconds required for a fixed volume of a given liquid to flow through an orificeSSU = Seconds Saybolt Universal relates to a smaller orifice for less viscous liquidsSSF = Seconds Saybolt Furol relates to a larger orifice for more viscous liquids

LIQUID SPRAY AND SPRAY NOZZLES Influence of liquid viscosity

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28 wwwpnr-nozzlescom CTG SH 07 EU

Viscosity influence on nozzle flow rate

AlI nozzle Catalogue data refer to spraying water (water cinematic viscosity is equal to 1 Centistoke)A liquid with viscosity higher than water will require more energy to be pumped and sprayed and will flow with lower velocity at the same pressure and this will cause a reduction in the turbulence of the flow For the above reason nozzles working on the turbulence principle like normal full cone nozzles and whirl hollow cone nozzles will show an increase in capacity while spraying liquids with viscosity higher than water This increase is very consistent for small size nozzles where the small radius of the whirl chamber tends to cause high turbu-lence in the flow and tends to diminish and to disappear for nominal capacity valves (capacity values at 3 bar) larger than 15 liters per minute

The graph below shows for a liquid with a viscosity of about 4 Centistokes typical variations in the nozzle flow rate value for different values of the nozzle whirl chamber diameter As it may be seen these variations can be neglected in most practical applications where nozzles with whirl chamber diameters well over 3 mm are used

For other types of nozzles not working on the turbulence principle the increase on viscosity will simply reduce the liquid exit velocity at the orifice thus causing a decrease in capacity Experience shows that this decrease ranges between 3 and 6 of nominal water capacity that is to say that the variation introduced is in the same order of magnitude as the nozzle flow rate toler-ance

Viscosity influence on nozzle spray angle and spray pattern

With reference to the theory of jet break-up and droplet information it can be easily imagined that spraying a liquid more viscous than water is a difficult task

Al the properties of the spray tend to worsen therefore one can expectA higher value for the minimum operating pressure that is the pressure value which allows for obtaining a well defined 1 spray with the expected spray angle A worse spray distribution since the viscous behavior of the liquid makes it more difficult to pro-duce fine droplets and 2 to distribute them evenly with the desired spray pattern A narrower spray angle It is difficult to give guidelines since results on different nozzles at different pressures and with 3 different liquids are scarcely predictableHowever our experience shows that in many cases the use of impact nozzles can give acceptable results where all other type of nozzle failsA laboratory test or a field test are stili the safest way to obtain sound results

50

45

40

35

30

25

20

15

10

5

0 2 3 4 5 6 7 8 9

Increase Flow rate vs Whirl Chamber Diameter

Incr

ease

Flo

w R

ate

[mm

]

Whirl Chamber Diameter [mm]

LIQUID SPRAY AND SPRAY NOZZLES Influence of liquid viscosityLI

QUID

SPR

AYAN

D SP

RAY

NOZZ

LES

29wwwpnr-nozzlescomCTG SH 07 EU

With reference to the Bernoulli Rule as exposed in page 6 one can say that the pressure energy of the liquid flow at the nozzle inlet is transformed totally (minus some losses due to friction inside the nozzle) into liquid velocity at the nozzle orificeCatalogue figures give nozzle capacities when spraying waterIf the specific gravity or density of the liquid is different from that of water the available pressure energy will produce a different liquid velocity at the nozzle orificesIn other words a given quantity of energy will spray always the same quantity of liquid mass but different volumes (flow rates) according to the liquid specific gravity or density

Therefore a liquid heavier than water will exit the nozzle with a lower velocity at lower flow rate while to the contrary a liquid lighter than water will be sprayed at higher velocity at higher flow rate

The following formula is to be applied

The table below gives the value of a correction factor to obtain the flow rate of a liquid with different specific weight as water

WhereQL Liquid flow rateQW Water flow rateF Correction factor

kgliter Libregallon F

06 50 129

07 58 120

08 67 112

09 75 105

10 83 100

11 92 095

12 100 091

13 109 088

14 117 085

15 125 082

16 134 079

17 142 077

18 150 075

19 159 073

20 167 071

QL = F QW8

LIQUID SPRAY AND SPRAY NOZZLES Influence of liquid specific gravity

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30 wwwpnr-nozzlescom CTG SH 07 EU

The spraying water impact of a nozzle depends on several factors and more precisely spray distribution pattern and spray angle The first step to calculate the impact value which is usually expressed in Kilograms per square centimeter is to deter-mine Total Theoretical lmpact Value using the following formula

The obtained value has to be multiplied by the Total Theoretical Impact per Square Centimeter Coefficient (E)The final value is the Spraying Liquid Impact expressed in kgpcm2Of course not alI the energy of the fluid vein is transferred to the impact point

A part of this energy sometimes a considerable part goes to obtain a desired spraying angle by having the liquid vein acquire a high rotational speed inside the whirl chamber The highest value of impact is obtained with straight jet nozzle and the value can be calculated multiplying spraying pressure per 19The tables below containing the Total Theoretical Impact sqcm coefficient values for different spray pattern nozzles for a dis-tance of 300 mm

[kgpcm2]

TOTAL THEORETICAL IMPACT PER SQ CM COEFFICIENT AT DISTANCE OF 300 MM (E)

Spray Flat jet nozzle Spray Full cone nozzle Spray Hollow cone nozzle Angle Angle Angle

15deg 0300 15deg 0110 25deg 0180 35deg 0130 30deg 0025 40deg 0120 50deg 0100 50deg 0010 65deg 0070 65deg 0004 60deg80deg 001002 80deg 0050 80deg 0002 100deg 0001

WhereQ is the flow rate at working pressure in lpmP is the pressure value in kgpcm2

[kgpcm2]TTI = 0024 Q P

SLI = E TTI

9

10

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SLIQUID SPRAY AND SPRAY NOZZLES Jet impact

31wwwpnr-nozzlescomCTG SH 07 EU

Jet impact diagram

A further parameter to characterize the performance of a spray nozzle is the distribution of the jet impact force which could be derived by means of mathematical methods from the values of the spray distribution onto the surface covered by the spray but which can more easily be measured with the help of specifically designed instrumentation

In some applications the jet impact force Is the most important parameter used to realize the required processSteel sheet descaling in a rolling mill is a typical example where the jet impact is required to take away the surface scale and obtain a perfectly even surfaceFor that reason special nozzles have been developed to perform this very task where service life impact value and spray distribution reach the values required for satisfactory resultThese test are performed in a laboratory equipped with a specifically designed instrumentation where the high pressures involved in these process can be reached which can measure the pressure values along a matrix of points distributed in the spray area covered by the nozzle

These values are supplied both in a table of values and as a 3D pressure diagram similar to those shown below

On such applications where producing high impact values in the jet is necessary it is of paramount importance that the liquid flow turbulence is kept to a minimum and therefore it is widely used to insert into the nozzle entrance devices designed to improve the operating conditions by forcing the liquid flow through straight passages with several different shapes by doing so the impact delivered by the spray is increased with the same feed pressure

One typical shape used by Pnr is shown on the right and the two dia-grams below show the impact force diagrams for the same nozzle with and without a flow straightener the reduction of flow turbulence can lead in increase of impact force often higher than 20Further improvements of course are available when the nozzle inside profile is properly designed in order to avoid sharp cross section changes and all surfaces are finished as smoothly as possible

Typical design of a Pnr flow straightener

Impact pressure diagram with flow straightenerImpact pressure diagram without flow straightener

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LIQUID SPRAY AND SPRAY NOZZLES Jet impact

32 wwwpnr-nozzlescom CTG SH 07 EU

LIQUID SPRAY AND SPRAY NOZZLES Pressure drop through a nozzle

Pressure drop through a nozzle

Some of our customers have asked us In the past which Is the pressure drop through a nozzle since they consider a nozzle one of the parts in a piping like a valve or an elbow which causes a given pressure drop along the line

The reality is different and can be easily understood when considering the Bernoulli formula [2] as given at page 19 of this manual the formula says that the total energy of a liquid flow is made from the addition of three facors

Potential energy due to elevationbullPressure energybullVelocity energybull

When we apply the formula at the entrance and at the outlet ( the orifice ) of a nozzle and we neglect the influence of turbulence losses in between we can easily see that

The potential energy variation can be neglected because of the limited dimensions of the nozzle since the distance bullbetween the nozzle entrance and the nozzle orifice plays no role-The pressure energy variation is important since the liquid pressure value falls abruptly from the pressure inside the feed bullpipe to the ambient pressureThe velocity energy variation is also consistent since the liquid is ejected from the orifice at high speedbull

In other words the pressure energy of the liquid flowing through the orifice is suddenly transformed in liquid drops velocity which is exactly what a nozzle is designed to do

This is shown from equation [3] at page 19 which allows the exit velocity from the nozzle to be calculated from the pressure inside the pipe ( we actually consider the pressure difference between the inside of the pipe and the ambient pressure in this formula )

In other words all the energy still available at the nozzle is converted into velocity or if you so prefer you have a total pressure fall The system designer shall therefore evaluate all the pressure drop between the pump outlet flange and the nozzle entrance in order to be sure that the nozzle feed pressure is sufficient to assure the desired capacity for the liquid being sprayed

parameters valuesat nozzle outlet

nozzle inlet nozzle oulet or orice

feed pressure

inlet velocity

parameters valuesat the nozzle inlet

(A)potential elevation

energy

(A)velocity ( kinetic ) energy

(A)pressure energy

ambient pressure

exit velocity

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33wwwpnr-nozzlescomCTG SH 07 EU

NOZ

ZLE

MAT

ERIA

LS

The choice of the right material for a nozzle is sometimes the most important one to do since the nozzle operating life depends upon it There are several factors to influence or shorten the nozzle operating life sometimes more than one at the same time the most important being

Wear from solid particles suspended into the liquid being sprayed1 Chemical corrosion from the liquid being sprayed 2 Chemical corrosion from the ambience outside the nozzle3 Exposure to high temperature 4 Exposure to mechanical shocks5

NOZZLE MATERIALSPnr material codes 34Properties of materials 35Mechanical properties of materials 39Chemical resistance of materials 40

NOZZLE MATERIALS

34 wwwpnr-nozzlescom CTG SH 07 EU

PNR has adopted a short code to identify construction materials for nozzles and nozzle partsHere below the most frequenty used materials

MATERIAL STANDARDS

The following standards are mentioned with reference to materials identification

NOZ

ZLE

MAT

ERIA

LS

A1 Free Cutting Steel E1 TEFLONreg (PTFE) L3 NICROFERreg 5923

A2 Carbon Steel E3 DELRINreg (POM) L4 STELLITEreg 6

A8 Zinc Plated Mild Steel E6 PERSPEXreg (PMMA) L5 HASTELLOYreg B2

A9 Nickel Plated Mild Steel E7 VITONreg (FPM) L6 HASTELLOYreg C4

B2 AISI 304 Stainless Steel E8 NBR- Sh 70 Rubber L61 HASTELLOYreg C22

B3 AISI 316 Stainless Steel E81 SANTOPRENEreg Rubber L62 ULTIMETreg

B31 AISI 316L Stainless Steel E82 KLINGERITEreg L7 NICKEL 201

B4 AISI 321 Stainless Steel E83 HYPALONreg L8 HASTELLOYreg C276

B8 AISI 309 Stainless Steel E91 Silicon L9 SANICROreg 28 SS

B81 AISI 310 Stainless Steel F12 Tungsten Carbide (TC) N1 AISI 302 Stainless Steel

C1 AISI 420 St Steel hardened F2 PIREXreg P6 ABS

C4 AISI 317 Stainless Steel F3 Rubin P7 FASIT OIL

C6 SAF 2205 Stainless Steel F4 Zapphire P8 EPDM ShA Rubber

D1 Polyvinylchloride (PVC) F5 Ceramic P9 STIROLUXreg 637

D2 Polypropylene (PP) F6 Silicon Carbide (SC) T1 Brass

D3 Polyamide (PA) G1 Cast Iron T3 Copper

D5 Powder Charged PP H1 Titanium T5 Bronze

D6 Fiberglass Charged PP L1 MONEL 400 T8 Nickel Plated Brass

D7 High Density Polyethylene L2 INCOLOYreg 825 V1 Aluminium

D8 Polyvinylidenefluoride (PVDF) L21 INCONELreg 600 V7 Aluminium ENP

STANDARD ORGANIZATION COUNTRY STANDARD CODE

AFNOR Association Franccedilaise de Normalisation France NF

AISI American Iron and Steel Institute USA AISI

ANSI American National Standards Institute USA ANSI

ASTM American Society for Testing and Materials USA ASTM

BSI British Standards Institution UK BS

DIN Deutsches Institut fuumlr Normung Germany DIN

DSIT Dansk StandardsInformation Technology Denmark DS

ISO International Organization for Standardization International ISO

JIS Japanese Institute for Standard Japan JIS

UNI Ente Nazionale di Unificazione Italy UNI

NOTEThe complete list of the Materials Codes may be requested to our Technical Service mentioning release code TGCE CODMAT

NOZZLE MATERIALS PNR material codes

35wwwpnr-nozzlescomCTG SH 07 EU

NOZ

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B1 AISI 303 STAINLESS STEEL

Chemical composition CR 1750 NI 850 S 025 Coding correspondence

Type Stainless Steel Austenitic AISI 303

Hardening Not possible BS 303 S 21

Annealing 1050 1100deg C in water DIN Wnr 14305

Welding Possible with precautions Euro X10CrNiS1809

Corrosion properties

Good resistance Atmospheric exposure food substances organic chemicalsLow resistance Chlorides reducing acids and over 800deg C

JIS SUS 303

NF Z6CN 18-09

SIS 2346

UNI XWCrNiS 1809

B3 AISI 316 STAINLESS STEEL

Chemical composition C 005 CR 170 NI 120 MO 225 Coding correspondence

Type Stainless Steel Austenitic AISI 316

Hardening Not possible BS 316 S 21

Annealing 1050 1100deg C in water DIN Wnr 14401

Welding Easy using same steel electrodes Euro X6CrNiMo17122

Corrosion properties

Good resistance Atmosphere great number of salts organic acids foodsLow resistance Solutions of reducing acids temperatures over 500deg C

JIS SUS 316

NF Z6CND 17-11

SIS 2347

UNI X5CrNiMo1712

B31 AISI 316L STAINLESS STEEL

Chemical composition C 003 CR 170 NI 130 MO 225 Coding correspondence

Type Stainless Steel Austenitic AISI 316 L

Hardening Not possible BS 316S12

Annealing 1050 1100deg C in water DIN Wnr 14404

Welding Easy using same steel electrodes Euro X3CrNiMo1810

Corrosion properties

Good resistance Atmosphere great number of salts organic acids foods salt waterLow resistance Solutions of reducing acids temperatures over 500deg C

JIS SUS 316L

NF Z2CND17-12

SIS 2348

UNI X2CrNiMo 1712

NOZZLE MATERIALS Properties of materials

36 wwwpnr-nozzlescom CTG SH 07 EU

C1 AISI 420 STAINLESS STEEL

Chemical composition C 020 CR 1300 Coding correspondence

Type Stainless Steel Martensitic AISI 420

Hardening 980deg - 1030deg C in oil BS 420 S 29

Annealing 750deg - 800deg C in air DIN Wnr 14021

Welding Possible with precautions Euro X20Cr13

Corrosion properties Good resistance Drinkable water steamgasoline oil alcohol ammonia

JIS SUS 420 J1

NF Z20C13

SIS 2303

UNI X20Cr13

C2 AISI 416 STAINLESS STEEL

Chemical composition C 012 CR 1250 S 022 Coding correspondence

Type Stainless Steel Martensitic AISI 416

Hardening 950deg - 1100deg C in oil BS 416 S 21

Annealing 750deg - 800deg C DIN Wnr ---

Welding Not possible Euro X120CrS13

Corrosion properties Good resistance Drinkable water steamgasoline oil alcohol ammonia

JIS SUS 416

NF Z12CF13

SIS ---

UNI X12CrS13

D8 POLYVINYLIDENE FLUORIDE (PVDF)

Description HIGH-MOLECULAR WEIGHT THE TOUGHEST OF THE FLUOROCARBON RESINS

Trade names amp SuppliersKYNAR (Atochem North America Inc formerly Penwalt Corporation)

SOLEF (Solvay Polymer Corporation)

Physical andMechanical Properties

Excellent resistance to abrasion and stress fatigue

Extremely pure opaque white resin

Thermal Properties UsefuI in temperatures ranging from -73 149degC (-100 300degF)Heat deflection temperature is (8090deg C at 182 Bars (176 194deg F at 264 psi)

Chemical Compatibility

Excellent chemical resistanceCan be used with wet or dry halogens most strong acids and bases aliphatics aromaticsalcohols and strong oxidizing agentsNot recommended for contact with ketones esters amines and some organic acids(fuming sulfuric acid)

NOZZLE MATERIALS Properties of materialsN

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E1 POLYTETRAFLUOROETHYLENE (PTFE)

Description FLUOROPLASTIC THAT HAVE SOME OR ALL OF THEIR HYDROGEN MOLECULESREPLACED BY FLUORINE

Trade names amp Suppliers

TEFLON TFE FEP and PFA (Dupont Polymer Products)

NEOFLON (Daikin)

FLUON (ICI Americas Inc)

SST-2SST-3 (Shamrock Technologies Inc)

Physical andMechanical Properties

Low coefficient

Low adhesiveness

Buona resistenza agli agenti atmosferici

Good weatherabilityLow resistance to creep and wear unless reinforced with glass figravebers which results in superior resistance

Thermal Properties High and low temperature stabilityHeat deflection temperatures range from 4855deg C at 182 bar (118-132deg F at 264 psi)

Chemical CompatibilityChemically inert

Totally insoluble

E3 ACETAL (ACETAL HOMOPOLYMERS AND COPOLYMERS)

Description HIGHLY CRYSTALLINE RESINS BASED ON FORMALDEHYDE POLYMERIZATION TECHNOLOGY

Trade names amp Suppliers

DELRIN (Dupont Polymer Products Corporation)

CELCON (Hoechst Celanese Corporation)

ULTRAFORM (BASF Corporation)

RTP 800 (RTP Corporation)

LUPITAL amp TENAL (Franklin Polymers Inc)

FULTRON 404 (ICI Americas Inc)

Physical andMechanical Properties

High tensile strength rigidity and esilience

High fatigue endurance

Excellent dimensional stability

Low coefficient of friction

Outstanding abrasion and wear resistance

Excellent creep resistance

Thermal Properties Heat deflection temperatures range from 110 -136deg C at 182 bars(230 - 270deg F at 264 psi) higher if glass figravelled

Chemical Compatibility

Remains stable in long-term high temperature water immersionExcellent resistance to chemicals and solvents but prolonged exposure to strong acids not recommendedNote Suitable for close-tolerance high-performance partsAvailable for machined parts or may be injection molded

NOZZLE MATERIALS Properties of materials

NOZ

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L6 HASTELLOY C4

PHYSICAL AND MECHANICAL PROPERTIES CHEMICAL COMPOSITION CORROSION RESISTANCE

R = 650800 Mpa C = 0015 max

Very good against pitting and tensile-corrosion specially in oxydizing atmosphereResistance in welded joints definitely better than C 276 lower than C22

Rp02 = 250470 Mpa Ni = 65

HRB = 90 Cr = 160

Mo = 155

W = --

Fe = 3 max

Ti = 05

Co = 2 max

APPLICATIONSRecommended for applications with strongly oxidizing atmosphere

L61 HASTELLOY C 22

PHYSICAL AND MECHANICAL PROPERTIES CHEMICAL COMPOSITION CORROSION RESISTANCE

R = 700800 Mpa C = 001 max

Excellent performances with oxydizing atmospheres as well as for pitting and tensile-corrosion conditionsVery good resistance in reducing atmospheres and for welded joints

Rp02 = 360420 Mpa Ni = 56

HRB = 93 Cr = 22

Mo = 13

W = 3

Fe = 3

Ti = --

Co = 25 max

APPLICATIONSChemical industry (gas ducts gas washing and treatment systems phosphoric acid production) Heat exchangers pumps chlorination reactors

L8 HASTELLOY C 276

PHYSICAL AND MECHANICAL PROPERTIES CHEMICAL COMPOSITION CORROSION RESISTANCE

R = 600800 Mpa C = 0015 max

Very good in reducing and oxydizing atmospheresVery good against pitting and tensile-corrosionAcceptable resistance in welded jointsIn cast parts excessive segregation not eliminated by thermal treatment of annealing makes it convenient to use C22 or C4 qualitieswhich assure better corrosion resistance and mechanical properties

Rp02 = 300370 Mpa Ni = 57

HRB = 90 Cr = 145165

Mo = 1517

W = frac345

Fe =

V = 035 max

Co = 25 max

APPLICATIONSChemical industry (air ducts scrubbers fans) Paper industry Thermoelectric plants Steel thermal treatments

NOZ

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MATERIALTENSILE STRENGHT

CORROSION RESISTANCERp 02 R

20degC 800degC 20degC 800degC

(68degF) (1408degF) (68degC) (1408degC)

AISI 302 280 100 680 200

Good sensitive to corrosionbetween grains for slow heatingand cooling in the 450-900deg Crange temperature

AISI 303 280 100 680 200 Discrete

AISI 304304L 270 90 600 100Good especially for 304L304 sensitive to corrosionbetween grains like AISI 302

AISI 309 250 100 640 220 Good Sensitive to corrosion between grains like AISI 302

AISI 310 310 170 650 270Good (gt 304 - 304L)Sensitive to corrosionbetween grains like AISI 302

AISI 316316L 270 110 560 220 Very high especially for 316L

AISI 321 210 100 540 140 Good

AISI 347 280 120 620 200 Good

AISI 416 620 70 750 90

Good in medium corrosive ambient (atmosphere water gasoline alcohol N1-13 foods)Not in high corrosive

BRASS 110-150 --- 360-410 --- Good especially when nickel plated

BRONZE 100-300 --- 200-600 --- Discrete especially with sea water

CAST IRON le 500 V 100-800 V

NICKEL ALLOYS 100-1000 V 300-1300 VVery high also for high temperature To use in the temperaturerange 800-1200deg C

PLASTICS --- --- 20-200 ---

Good also for erosionGenerally they are attackedwith oxidizers like nitric acidhalogens ect

PTFE --- --- 30-40 ---

Very high except for elementarystate of alkaline metalsand to compounds containingfluorine at high temp

DUPLEX STEEL gtAISI 3 gtAISI 3 gtAISI 3 gtAISI 3 Very high also with high temperatureand also for pitting

TITANIUM alloy 195-850 V 300-900 VVery high in oxidizing ambientVery low in reducing ambient and with compounds containing fluorine

Legend Rp 02 = 02 YIELD STRENGHT [MPa]R = ULTIMATE TENSILE STRENGHT [MPa]V = To verify time by time

NOZZLE MATERIALS Mechanical properties of materials

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PIPINGPipes data 74Economic pipe sizes 75Pressure drop in clean steel pipes 76Flange dimensions 78Sieve size conversion chart 80

PIPING

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The following table report the data of pipes according to ANSI B3619 that is one of the most used standards that regulate welded stainless steel pipes

DN NPS OD[mm]

SCHEDULE

5S 10S 40SSTD 80SXS

t m t m t m t m

[mm] [kgm] [mm] [kgm] [mm] [kgm] [mm] [kgm]

6 18 103 NA NA 124 028 173 037 241 048

8 14 137 NA NA 165 050 224 064 302 081

10 38 172 NA NA 165 064 231 086 320 112

15 12 213 165 081 211 101 277 128 373 164

20 34 267 165 103 211 130 287 171 391 223

25 1 334 165 131 277 212 338 254 455 328

32 1frac14 422 165 167 277 273 356 344 485 453

40 1frac12 483 165 192 277 315 368 411 508 549

50 2 603 165 242 277 399 391 551 554 759

65 2frac12 730 211 374 305 534 516 875 701 116

80 3 889 211 458 305 655 549 115 762 155

90 3frac12 1016 211 525 305 752 574 138 808 189

100 4 1143 211 592 305 849 602 163 856 226

125 5 1413 277 960 340 117 655 221 953 314

150 6 1683 277 115 340 140 711 287 1097 432

200 8 2191 277 150 376 202 818 431 1270 656

250 10 2730 340 229 419 282 927 611 1270 827

300 12 3239 396 317 457 365 953 749 1270 988

350 14 3556 396 348 478 419 NA NA NA NA

400 16 4064 419 421 478 480 NA NA NA NA

450 18 457 419 474 478 541 NA NA NA NA

500 20 508 478 602 554 696 NA NA NA NA

550 22 559 478 662 554 767 NA NA NA NA

600 24 610 554 837 635 959 NA NA NA NA

Where

DN = Nominal diameter NPD = Nominal Pipe Size OD = Outside Diameter t = Wall Thickness m = Specific WeightPIPI

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PIPING Pipes data

75wwwpnr-nozzlescomCTG SH 07 EU

The following Specific Pressure Drops (Y) are normally used in the good engineering practice(where Y=ΔPL ΔP Pressur Drop and L Pipe Lenght)

For pipe sizing the Velocity (V) is also usedIn the following table are shown the typical liquid velocities in steel pipes

Some fixed pressure drop values indicationsfor gate valves (fully open) consider a pressure drop of 5 metersbullfor normal bends consider a pressure drop of 5 metersbullfor a check valve consider a pressure drop of 15 metersbull

In the succeeding tables we show the velocity and specific pressure drop for several flow rates and pipe diameters

Not boiling waterY = 02divide05 bar100 m for pump discharge (07 bar100 m max if P gt 50 bar)

Y lt 0110 bar100 m for pump suction

Boiling water Y = 004divide005 bar100 m for pump suction (velocity = 03divide09 ms)

LIQUID LINE TYPE

Specific Pressure Dropsvs Velocity [ms]

0 lt V lt 2 3 lt V lt 10 10 lt V lt 20

NOT BOILING WATER

Pump suctionPump discharge (long)Discharge leads (short)Boiler feedDrainsSloped sewer

03 divide 0606 divide 0912 divide 2712 divide 2709 divide 12

-

06 divide 1209 divide 1515 divide 3715 divide 3709 divide 1509 divide 15

09 divide 1812 divide 2124 divide 4224 divide 42

-12 divide 21

HYDROCARBON LIQUIDS(normal viscosity)

Pump suctionDischarge heather (long)Discharge leads (short)Drains

05 divide 0808 divide 1112 divide 2709 divide 12

06 divide 1209 divide 1515 divide 3709 divide 15

09 divide 1812 divide 2124 divide 46

-

MEDIUM VISCOSITY OILPump suctionDischarge (short)Drains

--

03

05 divide 0901 divide 0209 divide 15

08 divide 1501 divide 0312 divide 18

OTHER WATERCooling tower Chilled waterSea water and generally foulingwater (long pipes) ()

06 divide 09 09 divide 15 12 divide 21

Note () In this case Cameron method has to be used with C=1 Y = 005 divide 012 bar100 m for principal manifold Y = 012 divide 023 bar100 m for secondary manifold

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PIPING Economic pipe sizes

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18rdquo 14rdquo

1 0350 0370 0200 0090 38rdquo 12rdquo

2 0705 1340 0395 0331 0223 0082 0145 0029 34rdquo

3 1060 2890 0593 0673 0333 0176 0217 0061 0125 0016 1rdquo

4 1410 4940 0788 1150 0444 0291 0290 0101 0167 0027 0110 0010

5 1760 7460 0985 1750 0556 0424 0362 0149 0209 0040 0137 0014

6 1180 2460 0667 0594 0434 0207 0251 0054 0165 0019 114rdquo

8 1580 4060 0892 1020 0579 0351 0335 0091 0219 0033 0126 0009 112rdquo

10 1110 1530 0724 0534 0418 0136 0274 0049 0158 0012 0116 0006

15 1670 3250 1090 1130 0627 0284 0411 0099 0236 0026 0174 0012

20 2rdquo 2230 5600 1450 1900 0836 0481 0549 0168 0315 0043 0233 0021

30 0212 0013 212rdquo 2170 4130 1250 1020 0823 0353 0473 0092 0348 0043

40 0283 0022 0190 0007 2900 7180 1670 1760 1100 0606 0631 0155 0465 0073

50 0354 0032 0237 0012 2090 2700 1370 0911 0789 0233 0581 0108

60 0424 0044 0284 0017 2510 3810 1650 1290 0943 0321 0697 0150

70 0495 0079 0332 0022 3rdquo 2930 5120 1920 1720 111 0434 0814 0199

80 0566 0074 0379 0028 0248 0010 312rdquo 2190 2210 126 0554 0925 0253

90 0636 0093 0427 0035 0279 0013 0209 0006 2470 2770 142 0692 1040 0319

100 0707 0114 0474 0043 0310 0015 0232 0007 4rdquo 2740 3400 158 0843 1160 0392

150 1060 0238 0711 0090 0464 0031 0349 0016 0272 0008 4110 7440 236 181 1740 0828

200 1410 0414 0948 0153 0619 0053 0466 0027 0362 0014 315 314 2330 1450

250 1760 0625 1190 0233 0774 0080 0581 0040 0453 0021 5rdquo 2900 2200

300 2120 0889 1420 0324 0930 0112 0698 0055 0543 0030 0352 0011 3480 3070

350 2470 1190 1660 0438 1080 0150 0815 0074 0634 0040 0411 0014 6rdquo 4070 4160

400 2830 1550 1900 0563 1240 0195 0935 0096 0724 0051 0469 0018 0341 0007 4650 5380

450 3180 1930 2130 0707 1390 0242 1050 0120 0815 0063 0528 0022 0366 0009 5230 6790

500 3540 2380 2370 0867 1550 0298 1170 0147 0902 0076 0587 0027 0407 0011

550 3880 2870 2610 1040 1700 0354 1280 0174 0991 0092 0645 0032 0447 0013

600 4240 3390 2840 1220 1860 0418 1400 0204 1090 0110 0704 0037 0488 0015

650 4590 5560 3080 1420 2010 0486 1510 0239 1180 0127 0762 0043 0529 0017

700 4950 4550 3320 1650 2170 0560 1630 0275 1270 0146 0821 0050 0569 0020

750 5300 5200 3560 1880 2320 0637 1750 0314 1360 0164 0879 0057 0610 0023

800 3790 2130 2480 0721 1860 0354 1450 0185 0936 0064 0651 0025 8rdquo

850 4030 2390 2630 0805 1980 0395 1540 0209 1000 0072 0692 0028 0403 0007

900 2790 0901 2090 0438 1630 0232 1050 0008 0732 0032 0427 0008

950 2940 1000 2210 0486 1720 0258 1120 0087 0773 0036 0451 0010

1000 3100 1110 2320 0534 1810 0284 1170 0096 0814 0039 0474 0011

1100 3410 1290 2560 0643 1990 0341 1290 0116 0895 0047 0522 0012

1200 3720 1 580 2800 0763 2170 0403 1410 0135 0974 0055 0569 0015

1300 3030 0890 2360 0473 1530 0157 1060 0063 0616 0017

1400 3260 1020 2540 0544 1640 0183 1140 0072 0664 0019

1500 3490 1170 2720 0617 176 0208 1220 0083 0712 0022

1600 3720 1330 2890 0697 1880 0234 1300 0093 0758 0025

1700 10rdquo 3950 1490 3080 0784 1990 0260 1380 0104 0806 0028

1800 0546 0010 3260 0875 2110 0290 1470 0116 0854 0032

1900 0575 0012 3440 0965 2230 0323 1550 0129 0901 0034

2000 0606 0012 3617 1060 2340 0356 1630 0143 0946 0037

2200 0667 0015 3980 1280 2580 0429 1790 0172 1050 0045

2400 0727 0017 12rdquo 2820 0507 1950 0200 1140 0053

2600 0788 0021 0563 0009 3050 0589 2110 0234 1230 0061

2800 0848 0023 0606 0010 14rdquo 3280 0676 2280 0268 1330 0070

3000 0909 0026 0649 0011 0532 0007 3520 0773 2440 0306 1420 0080

3500 1060 0035 0760 0015 0620 0009 4110 105 2850 0416 1660 0108

4000 1210 0045 0866 0020 0709 0012 16rdquo 4690 135 3250 0532 1900 0139

4500 1360 0056 0976 0025 0798 0015 0606 0007 3660 0674 2130 0173

5000 1520 0069 1080 0029 0886 0018 0674 0009 4070 0822 2370 0212

6000 1810 0097 1290 0042 1070 0026 0808 0013 18rdquo 4880 1160 2850 0301

7000 2120 0130 1510 0055 1240 0035 0940 0017 0741 0010 5690 1580 3310 0403

8000 2420 0168 1730 0072 1420 0045 1080 0022 0847 0012 6510 2050 3790 0525

9000 2730 0210 1950 0091 1600 0056 1210 0027 0954 0015 4270 0659

10000 3030 0257 2170 0111 1770 0067 1350 0033 1050 0019 4740 0801

Legend Q Water Flow Rate (Lpm) V Velocity (ms) Y Specific Pressure Drops (bar100m)Water at ambient temperature in straight pipe

SPECIfIC PRESSURE DROPS fOR WATER fLOW IN CLEAN STEEL PIPE SCH 10S

Q V Y V Y V Y V Y V Y V Y V Y V Y [lm] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m]

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SPECIfIC PRESSURE DROPS fOR WATER fLOW IN CLEAN STEEL PIPE SCH 40S

Legend Q Water Flow Rate (Lpm) V Velocity (ms) Y Specific Pressure Drops (bar100m)Water at ambient temperature in straight pipe

18rdquo 14rdquo

1 0458 0726 0251 0170 38rdquo 12rdquo

2 0918 2590 0501 0600 0272 0136 0170 0044 34rdquo

3 1380 5590 0752 1220 0407 029 0255 0091 0144 0023 1rdquo

4 1840 9570 1000 2090 0543 048 0340 0151 0192 0038 0120 0012

5 2290 14450 1250 3180 0679 070 0425 0223 0241 0057 0150 0017

6 1500 4460 0815 0980 0510 0309 0289 0077 0180 0024 114rdquo

8 2010 7360 1090 1690 0680 0524 0385 0129 0240 0041 0138 0011 112rdquo

10 1360 2520 0850 0798 0481 0193 0300 0061 0172 0015 0127 0008

15 2040 5370 1280 1690 0722 0403 0450 0124 0258 0032 019 0015

20 2rdquo 2720 9240 1700 2840 0962 0683 0600 0210 0344 0054 0254 0026

30 0231 0016 212rdquo 2550 6170 1440 1450 0900 0442 0517 0114 038 0053

40 0308 0027 0216 0010 3400 10720 1920 2500 1200 0758 0689 0193 0507 0091

50 0385 0039 0270 0017 2410 3830 1500 1140 0861 029 0634 0135

60 0462 0055 0324 0023 2890 5410 1800 1610 103 0400 0761 0187

70 0539 0098 0378 0031 3rdquo 3370 7270 2100 2150 1210 0541 0888 0248

80 0616 0092 0432 0039 028 0014 312rdquo 2400 2760 1380 0690 1010 0315

90 0693 0115 0486 0048 0315 0017 0235 0008 2700 3470 1550 0862 1140 0397

100 0770 0141 0540 0059 035 002 0261 0010 4rdquo 3000 4250 1720 1050 1270 0488

150 1150 0295 0810 0125 0524 0042 0392 0021 0304 0011 4500 9300 2580 2260 1900 1030

200 1540 0512 1080 0212 0699 0072 0523 0036 0405 0019 3440 3910 2540 1810

250 1920 0773 1350 0322 0874 0108 0653 0053 0507 0028 5rdquo 3170 2740

300 2310 1100 1620 0449 105 0152 0784 0074 0608 004 0387 0014 3800 3820

350 2690 1470 1890 0606 122 0203 0915 0099 0710 0053 0452 0018 6rdquo 4440 5180

400 3080 1920 2160 0780 14 0264 1050 0128 0811 0068 0516 0023 0375 0009 5070 6690

450 3460 2390 2430 0979 157 0328 1180 0161 0912 0084 0581 0028 0402 0012 5710 8450

500 3850 2950 2700 1200 175 0403 1310 0196 1010 0101 0646 0034 0447 0014

550 4230 3550 2970 1440 192 0479 1440 0232 1110 0122 0710 0041 0491 0016

600 4620 4200 3240 1690 2100 0566 1570 0273 1220 0146 0775 0047 0536 0019

650 5000 6880 3510 1970 2270 0658 1700 0319 1320 0169 0839 0055 0581 0022

700 5390 5630 3780 2280 2450 0759 1830 0368 1420 0194 0904 0063 0625 0025

750 577 6440 4050 2600 2620 0863 1960 042 1520 0218 0968 0072 067 0029

800 4320 2950 2800 0977 2090 0473 1620 0246 1030 0081 0715 0032 8rdquo

850 4590 3310 2970 1090 2220 0528 1720 0277 1100 0091 076 0036 0439 0009

900 3150 1220 2350 0585 1820 0308 1160 0100 0804 0041 0465 001

950 3320 1350 248 0649 1930 0342 1230 0111 0849 0045 0491 0012

1000 3500 1500 261 0714 2030 0377 1290 0122 0894 0049 0516 0013

1100 3850 1750 2870 0860 2230 0452 1420 0147 0983 0059 0568 0015

1200 4200 2140 3140 1020 2430 0534 1550 0172 1070 0069 0620 0018

1300 3400 1190 2640 0627 1680 0200 1160 008 0671 0021

1400 3660 1370 2840 0722 1810 0232 1250 0091 0723 0024

1500 3920 1560 3040 0818 1940 0264 1340 0105 0775 0027

1600 4180 1780 3240 0924 2070 0297 1430 0118 0826 0031

1700 10rdquo 4440 1990 3450 1040 2190 0331 1520 0132 0878 0035

1800 0590 0012 3650 1160 2320 0369 1610 0147 0930 0039

1900 0622 0014 3850 1280 2450 041 1700 0163 0981 0042

2000 0655 0015 40500 1410 2580 0452 1790 0181 1030 0046

2200 0721 0018 4460 1700 2840 0545 1970 0217 1140 0056

2400 0786 0021 12rdquo 3100 0645 2140 0253 1240 0065

2600 0852 0025 0600 001 3360 0749 2320 0296 1340 0076

2800 0917 0028 0646 0012 14rdquo 3610 0859 2500 0339 1450 0087

3000 0983 0032 0692 0013 0573 0008 3870 0982 268 0387 1550 0099

3500 1150 0043 0810 0018 0668 0011 4520 1330 3130 0526 1810 0134

4000 1310 0055 0923 0023 0764 0014 16rdquo 5160 1720 3570 0673 2070 0172

4500 1470 0068 1040 0029 0860 0018 0658 0009 4020 0853 2320 0214

5000 1640 0084 1150 0034 0955 0022 0731 0011 4470 1040 2580 0262

6000 1960 0118 1380 0049 1150 0031 0877 0016 18rdquo 5360 1470 3100 0373

7000 2290 0158 1610 0065 1340 0042 1020 0021 0808 0012 6250 2000 3610 0499

8000 2620 0204 1840 0085 1530 0054 1170 0027 0924 0015 7150 2590 4130 065

9000 2950 0256 2080 0107 1720 0067 1310 0033 1040 0019 4650 0816

10000 3280 0313 2310 0130 1910 0081 1460 0041 1150 0023 5160 0992

Q V Y V P V Y V Y V Y V Y V Y V Y [lm] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m]

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10 75 12 038 4 11 50

15 80 12 044 4 11 55

20 90 14 065 4 11 65

25 100 14 082 4 11 75

32 120 14 117 4 14 90

40 130 14 139 4 14 100

50 140 14 162 4 14 110

65 160 14 214 4 14 130

80 190 16 343 4 18 150

100 210 16 422 4 18 170

125 240 18 611 8 18 200

150 265 18 751 8 18 225

175 295 20 1020 8 18 255

200 320 20 1230 8 18 280

250 375 22 1850 12 18 335

300 440 22 2550 12 22 395

350 490 22 3180 12 22 445

400 540 22 3850 16 22 495

450 595 22 4700 16 22 550

500 645 24 6040 20 22 600

PN 6 (UNI 6091)

ND 6 (DIN 2527) DN Flange Holes

D t W N Oslash a

90 14 063 4 14 60

95 14 071 4 14 65

105 16 101 4 14 75

115 16 122 4 14 85

140 16 180 4 18 100

150 16 209 4 18 110

165 18 287 4 18 125

185 18 365 4 18 145

200 20 461 8 18 160

220 20 565 8 18 180

250 22 812 8 18 210

285 22 1050 8 22 240

315 24 1410 8 22 270

340 24 1620 12 22 295

405 28 2510 12 25 355

460 28 3520 12 25 410

520 30 4820 16 25 470

580 32 6350 16 30 525

640 32 7720 20 30 585

715 34 1020 20 33 650

PN 16 (UNI 6093)

ND 16 (DIN 2527) Dimensions Holes

D t W N Oslash a

ND 10 (DIN 2527) Dimensions Holes

D t W N Oslash a

90 14 063 4 14 60

95 14 071 4 14 65

105 16 101 4 14 75

115 16 122 4 14 85

140 16 180 4 18 100

150 16 209 4 18 110

165 18 287 4 18 125

185 18 365 4 18 145

200 20 461 4 18 160

220 20 565 8 18 180

250 22 812 8 18 210

285 22 1050 8 22 240

315 24 1410 8 22 270

340 24 1650 8 22 295

395 26 2410 12 22 350

445 26 3080 12 22 400

505 26 3960 16 22 460

565 26 4960 16 25 515

615 26 5860 20 25 565

670 28 7530 20 25 620

PN 10 (UNI 6092)

LegendaDN Nominal DiameterD Flange External Diametert Flange ThicknessW Flange WeightN Hole NumberOslash Hole Diametera Hole axis

PIPING Flange dimensionsPI

PIN

G

Blind flanges to DIN 2527

79wwwpnr-nozzlescomCTG SH 07 EU

LegendDN Nominal DiameterD Flange External Diametert Flange ThicknessW Flange WeightN Hole NumberOslash Hole Diametera Hole axis

12rsquorsquo 889 111 08 4 159 603

34rsquorsquo 984 127 09 6 159 698

1rsquorsquo 1079 143 10 4 159 794

114rsquorsquo 1175 159 13 4 159 889

112rsquorsquo 1270 175 14 4 159 984

2rsquorsquo 1524 190 18 4 190 1206

212rsquorsquo 1778 222 32 4 190 1397

3rsquorsquo 1905 238 41 4 190 1524

312rsquorsquo 2159 238 59 8 190 1778

4rsquorsquo 2286 238 77 8 190 1905

5rsquorsquo 2540 238 91 8 222 2159

6rsquorsquo 2794 254 118 8 222 2413

8rsquorsquo 3429 286 204 8 222 2984

10rsquorsquo 4064 302 318 12 254 3619

12rsquorsquo 4826 317 500 12 254 4318

14rsquorsquo 5334 349 600 12 286 4762

16rsquorsquo 5969 365 770 16 286 5397

18rsquorsquo 6350 397 950 16 317 5778

20rsquorsquo 6985 429 1230 20 317 6350

22rsquorsquo 7493 460 1510 20 349 6921

ANSI 150 lb DN Flange Holes

D t W N Oslash a

952 143 10 4 159 667

1175 159 14 4 190 825

1238 175 18 4 190 889

1333 206 27 4 190 984

1556 222 36 4 222 1143

1651 254 45 8 190 1270

190S 286 68 8 222 1492

209S 317 91 8 222 1683

2286 349 132 8 254 1841

2540 349 150 8 254 2000

2794 381 200 8 254 2349

3175 413 277 12 254 2699

3810 476 450 12 286 3302

4445 540 700 16 317 3873

5207 571 103 16 349 4508

5842 603 141 20 349 5143

6477 635 181 20 381 5715

7112 667 228 24 381 6286

7747 698 282 24 413 6858

8382 730 311 24 444 7429

ANSI 400 lb Dimensions Holes

D t W N Oslash a

ANSI 300 lb Dimensions Holes

D t W N Oslash a

952 143 10 4 159 667

1175 159 14 4 190 825

1238 175 18 4 190 889

1333 190 27 4 190 984

1556 206 32 4 220 1143

1651 222 36 8 190 1270

1905 254 54 8 222 1492

2095 286 73 8 222 1683

2286 302 95 8 222 1841

2540 317 122 8 222 2000

2794 349 159 8 222 2349

3175 365 227 12 222 2699

3810 413 370 12 254 3302

4445 476 580 16 286 3873

5207 508 840 16 317 4508

5842 540 1070 20 317 5143

6477 571 1390 20 349 5715

7112 603 3900 24 349 6286

7747 635 2230 24 349 6858

8382 667 2700 24 413 7429

PIPING Flange dimensions

PIPI

NG

flanges to ANSI norms

80 wwwpnr-nozzlescom CTG SH 07 EU

PIPI

NG

Sieves are used both for determining the particle size distribution of a granular material and to filter solid particles in a liquid Normally the sieve is made with a fabric whose characteristic dimensions areL is the Opening Width (free passage)D is the Diameter of the wireP is the Pitch of the wireS is the Thickness of the fabricTo classify particle sizes there is some Sieve Series according to specific standardsthe most known are Tyler Sieve Series US Sieve Series UK Sieve SerieshellipThe Tyler mesh size indicates exactly the number of openings per linear inch of mesh

L[microm]

TYLER Sieve[Mesh No]

ASTM E11 Sieve[Mesh No]

BS 410 Sieve[Mesh No]

DIN 4188 Sieve[mm]

5 2500 2500 0005

10 1250 1250 0010

15 800 800 0015

20 625 635 625 0020

22 0022

25 500 500 500 0025

28 0028

32 na 450 440 0032

36 0036

38 400 400 400

40 0040

45 325 325 350 0045

50 0050

53 270 270 300

56 0056

63 250 230 240 0063

71 0071

75 200 200 200

80 0080

90 170 170 170 0090

100 0100

106 150 140 150

112 0112

125 115 120 120 0125

140 0140

150 100 100 100

160 0160

180 80 80 85 0180

200 0200

In the german standard (DIN norm 4188) the Opening Width (L) is given in millimeters

PIPING Sieve size conversion chartPI

PIN

G

81wwwpnr-nozzlescomCTG SH 07 EU

L[microm]

TYLER Sieve[Mesh No]

ASTM E11 Sieve[Mesh No]

BS 410 Sieve[Mesh No]

DIN 4188 Sieve[mm]

212 65 70 72

250 60 60 60 0250

280 0280

300 48 50 52

315 0315

355 42 45 44 0355

400 0400

425 35 40 36

450 0450

500 32 35 30 0500

560 0560

600 28 30 25

630 0630

710 24 25 22 0710

800 0800

850 20 20 18

900 0900

1000 16 18 16 1000

1120 1120

1180 14 16 14

1250 1250

1400 12 14 12 1400

1600 1600

1700 10 12 10

1800 1800

2000 9 10 8 2000

2240 2240

2360 8 8 7

2500 2500

2800 7 7 6 2800

3150 3150

3350 6 6 5

3550 3550

4000 5 5 4 4000

4500 4500

4750 4 4 35

5000 5000

5600 35 35 3

6700 3 0265 in 1

8000 25 516 in na

Applicable standards areISO 565 (1987) ISO 3310 (1999) ASTM E 11-70 (1995)DIN 4188 (1977) BS 410 (1986) AFNOR NFX11-501 (1987)

Legend Q Water Flow Rate V Velocity P Pressure drop Pressure drop in bar per 100 meters of straight pipe (water at ambient temperature)

PIPING Sieve size conversion chart

PIPI

NG

Besides its main range of nozzles for industrial applications PNR manufactures a wide range of complementary products and systems to optimize the use of spray jets and fluids control in most of the modern industrial processes

PNR PRODUCT RANGE

CTG AC

CTG LS

CTG UG

CTG AZ

Complementary Products andAssembly FittingsA complete line of nipples clamps swivel joints and everything that helps you to assemble align and service your spraying systems quickly and easilyAir blowers mixing eductors filters clean-ing guns and lances hose reels steam heaters pressure tanks quick couplings to help you build up a professional system upgraded to the latest standards

Tank washing systemsA complete range from simple fixed washing heads to the two-axis heads from mushroom nozzles to fluid driven reaction heads up to the motor driven washing heads equipped with a pneu-matic or electric motorAll for the inside cleaning of industrial tanks according to the latest technology accessories included

Spray nozzles for industrial applicationsOne of the world most complete lines of nozzles for numberless industrial appli-cations Nozzles with a wide openings range various types of vanes several spray patterns anti-clog design available in small and big dimensions and made in many food-grade materials like PFTE and Stainless Steel 316L with threaded and flanged connections

Air assisted atomizersUltrasonic classic and automatic atomiz-ers for the finest atomization in any insus-trial process High quality machining and strict quality control ensure your systems top professional resultsProgramming and control panels for an easy assembly of complete humidification systems

CTG SP

CTG PM

CTG SW

CTG LN

Spraydry nozzlesAir assisted or hydraulic high pressure ato-mizers made in high-quality metal alloys or tungsten carbideA complete line of nozzles for the moder-nization of existing facilities at competitive prices To ensure highly accurate results and a long service life these nozzles are manufactured with the finest materials and technologically advanced machines

Paper mill productsA line of products specifically designed for perfect results on paper mill machines including disc nozzles patented for self-cleaning filters flat jet nozzles with orifices in sapphire ruby and ceramic oscillating tubes equipped with a computer driven motor

Steelwork nozzlesA complete line of nozzles for steelwork applications including continuous casting air atomizers and conventional nozzles descaling nozzles for high pressure sys-tems dovetail tips for cylinders cooling and high capacity flanged nozzles for coke quenching

Gas cooling lancesSpillback or air assited lances for gas coo-ling in steelworks cement plants and other industrial applicationsWe can supply spare parts upgrade your plant and even supply a complete PLC driven system to enhance the towers per-formances to the highest efficiency level allowed by today technology

wwwpnr-nozzlescomCTG SH 07 EU

CTG SH 07 EUwwwpnr-nozzlescom

STAM

PATO

IN E

U 09

09

copy B

ellamp

Tany

Our products are distributed through

We are also represented in

PNR AmericaPNR Asia

PNR BalticPNR Benelux

PNR ChinaPNR Czech Republic

PNR DeutschlandPNR France

PNR ItaliaPNR Mexico

PNR UK

ArgentinaAustraliaAustriaBrazil

BulgariaCanada

ChileCroatia

DenmarkFinlandGreece

IndiaIndonesia

IranIrelandKorea

MalaysiaNorway

New ZealandPakistan

PhilippinesPoland

Portugal

RumeniaRussiaSerbia

SingaporeSlovenja

SpainSouth Africa

SwedenTaiwanTurkey

Venezuela

Page 14: SPRAY CTG SH 07 EU ENGINEERING HANDBOOK

14 wwwpnr-nozzlescom CTG SH 07 EU

LIQUID SPRAY AND SPRAY NOZZLES Computerized fluid dynamics

The customers demand for an always higher efficiency requires to use not only the best tooling but in addition control instruments and design methods always more sophisticated like for example new software for obtaining the velocity distribution of a fluid flowing through a conduit

These software programs require that the geometry of the inner con-duit to be geometrically defined and in addition the process conditions ( pressure temperature fluid capacity ) and the fluid properties ( specific weight viscosity ) to be Introduced

Based on the above data it is pos-sible to obtain a very precise dis-tribution for the velocity value in each single point of the conduit both under numeric form and flow diagramsThese Information make it possi-ble as an example to minimize the flow turbulence and consequently to Increase the nozzle efficiency through an increase in the fluid exit velocityThis is of basic Importance for some kind of nozzles for example those nozzles required to supply an high impact jet when performing descal-ing processes in a rolling millBy trial and error it is also possible to eliminate problems like jet Instability or cavitation

The overall process efficiency in the flow path before the nozzle can also be considered which often results into the design of geometry modifi-cation or the Introduction of special flow improving profiles along the conduit

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The diagram on the right shows the idealization of the process generating the droplets while the water jet exiting the nozzle is breaking up The theoretical model whose exactitude seems to be confirmed by scientific research considers that the liquid flowing through the nozzle and past the orifice edge evolves into a liquid lamina This lamina because of instability induced by aerodynamic forces breaks up first into elongated ligaments more or less cylindrical and later into droplets

Taking the above process as a guideline one can easily appreciate that the average droplet diameter is some what related to several factors like

1 The thickness of the lamina itself2 The evenness of the lamina 3 A steady flow and break up process

For what has been said above and limited to hydraulic nozzles the system designer looking for fine droplet sprays should consider that the following results can be expected

Impact nozzles best

Centrifugal hollow cone nozzles multiple full cone nozzles good

Turbulence nozzles fair

Centrifugal Vaneless full cones worst

The above choice is obviously based on the droplet generation process which changes from one nozzle type to another and allows to forecast which type is best fro the applicationAn additional consideration of interest is that the expected droplet size changes for the same type of nozzle with the nozzle size it is possible to generate smaller drops spraying the same water quantity at the same pressure using a greater number of smaller nozzles

In cases where energy requirements are not a problem or where a specified small droplet diameter is required the smal-lest droplets can be obtained by means of an air assisted atomizerHere the shear action of a high speed compressed air flow is used with several different techniques to obtain a value for SMD (Sauter Mean Diameter) of 50 microns and less

LIQUID SPRAY AND SPRAY NOZZLES Spray generation

Theoretical Mechanism of droplet generation

16 wwwpnr-nozzlescom CTG SH 07 EU

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SLIQUID SPRAY AND SPRAY NOZZLES Droplet spectrum

The atomization of a liquid by means of a compressible fluid like air steam or a gas is defined pneumatic two-phase or twin-fluid atomization Many industrial processes require the availability of finely atomized droplets and the techniques to produce atomized jets have been largely improved in the recent years In addition more sophisticated process techniques have incre-ased the demand for a precise definition about the characteristics of the spray and are now available to the design engineer Since many years PNR can supply upon request complete documentation containing test reports about the more interesting and additional information which are described below for all PNR products

Laser Interpherometer Test (By Pdpa)

PNR droplet size test reports are performed by means of a Laser Interpherometer (Phase Doppler Particle Analyzer) where two laser beams cross in a given point of the spray and define a test probe area Droplet flying through the probe area cause a light scatter which is picked up by the instrument receiver and processed through a computer in order to obtain relevant information about the spray characteristics

Report information

Report information is made of data printed on three pages where the first page contains the most interesting data which make possible to base process calculations upon precise data about spraying degrees process efficiency and jet behavior in operational ambiance These pages contain the Sauter Mean Diameter value whose knowledge is of special importance in heat exchange calculations about evaporative gas cooling processes since it gives the possibility of evaluating the exchange surface obtained by atomizing for a given liquid volume

The upper picture at page 18 referring to atomizing water by means compressed air shows two following histograms

bull Distribution curve of droplet diameter (micron)

bull Distribution curve of droplet velocities (mps)

and the below described values

bull Arithmetic Mean Diameter (D10)

bull Surface Mean Diameter (D20)

bull Volume Mean Diameter (D30)

bull Sauter Mean Diameter (D32)

ARITHMETIC MEAN DIAMETERThis is a diameter value which multiplied by the local num-ber of droplets in the sample equals the addition of alI droplets diameters

SURFACE MEAN DIAMETERThis is the diameter of such a droplet whose surface mul-tiplied by the total droplets number equals the sum of alI droplets surfaces

VOLUME MEAN DIAMETERThis is the diameter of such a droplet whose volume mul-tiplied by the total droplets number equals the sum of all droplets volumes

SAUTER MEAN DIAMETERThis is the diameter of such a droplet whose volumearea ratio equals the ratio between the sum of alI droplet volu-mes divided by the sum of alI droplet surfaces

D10 = Σ i ni di

Σ i ni

D20 = Σ i ni di

2

Σ i ni

D30 = Σ i ni di

3

Σ i ni

D32 = Σ i ni di

3

Σ i di

2

3

17wwwpnr-nozzlescomCTG SH 07 EU

AttemptsDroplet number crossing probe area during test time This includes both validated and not validated droplet

Correct Count Criteria A mathematic correction is applied to validate droplets which cross Probe Area in a peripheral belt or to droplets without a perfect spherical shape so that alI validated droplets parameters are homogeneous (This correction is necessary so that there is direct proportionally between laser beam phase and droplet number diameter)

Number Density It is the number of droplets passing through probe area within test time

Probe areaThis is the area where the two laser beams are crossing so determining the probe area AlI droplets intersecting probe area are checked droplets which respect given parameters for shape are taken as valid droplets and make up the sample whose size and velocity parameters are reported

ValidationsDroplets accepted based on given shape parameters to make up for test sample

Velocity MeanDroplets distribution speed histogram (ms)

Volume Flow RateIt is the volume measured in cubic centimeter per second of the validated droplets making up for the sample

Volume FluxIt is the flow rate per specific area measured in cubic centimeter per second and square centimeter of the validated droplets making up the sample

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LIQUID SPRAY AND SPRAY NOZZLES Droplet spectrum

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SLIQUID SPRAY AND SPRAY NOZZLES Droplet spectrum

PNR can supply upon request complete documentation con-taining test reports about the aforementioned parameters and additional information for all PNR atomizersThe diagrams beside show the distribution of droplet diameters and droplet velocities of a spray under test as available to our customers

In the photo beside a test being performed at our laboratoriesWe use a computer driven laser interpherometer to detect and record the spray parameters while fluid capacities and feed pressure values are monitored through high precision instru-ments

IMPORTANT NOTE

The droplet size values measured with a PDPA instrumentation are representative of a well specified volume inside the spray and taking measurements in a different volume they can be considerably differentA correct spray droplet size characterization requires then not only tests being performed in several volumes within the spray but also that those measure volumes are selected with regard to the process the droplets are expected to performAs an example the droplet characterization of a spray should define how many volumes have been tested and which are the coordinates of each single test volume in relation to the nozzle orifice

Most of the times pretending to describe the droplet spectrum of a spray nozzle at a given pressure with only one diagram is therefore not correct

19wwwpnr-nozzlescomCTG SH 07 EU

In order to calculate the discharge flow rate from a given nozzle the Bernoulli law shall be used which says that the energy of a liquid flow remains unchanged over alI the sections of the flow Friction and turbu-lence losses are neglected which is reasonable for our purposes if the cal-culation is performed over two sections not too far away from each other

The Bernoulli law can be written as follows

Therefore if we consider two sections of the same pipe section A and section B we can write that the flow energy remains constant in the form

If we finally consider that the two above sections are taken immediately before and immediately after the nozzle outlet orifice being

ZA = ZB PB = 0 (PA is a differential pressure referred at the atmosphere pressure)

VA cong 0 negligible as compared to VB (for orifice diameter much smaller than the duct diameter)

we shall come to the formula

When we define a new constant k to include the value of the nozzle orifice outlet area (A) then we come to the following equation which says that for a nozzle spraying into a room at ambient pressure the exiting flow is proportional to the feed line pressure

Considering now two different pressure values for the same nozzle since k is a constant quantity we can write that

and derive from the above an equation that makes it possible to calculate the nozzle flow value at any given pressure value once the flow value at another pressure value is known

The energy of a given liquid flow crossing a given pipe section is composed of three parts namely

P Pressure energy of liquid particle per volume unit

1 ρV2 Kinetic energy of liquid particle per volume unit2ρgz Potential Energy of liquid particle per volume unit

Where ρ = density of liquid g = gravitational acceleration

z = height respect to one plane of reference V = liquid velocity

PA = 1 ρVB 2 rArr

2

K = Q rArr

PK =

Q1 = Q2 rArr

P1 P2

Q = A V rArr

Q = A x C x P rArr

1 P + 1 ρV2 + ρgz = E

2

VB = 2 PA rArr ρ

Q1 = P1

Q2 P2

3 V = C P

4 Q = K P

2 PA + 1 ρVA 2 + ρgzA = PB + 1 ρVB

2 + ρgzB 2 2

EXIT VELOCITY DEPENDS UPON PRESSURE

NOZZLE CAPACITY DEPENDS UPON PRESSURE

NOZZLE CAPACITYAT A DIFFERENT PRESSURE

5 Q2 = Q1 P2

P1

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LIQUID SPRAY AND SPRAY NOZZLES Nozzle flow rate

20 wwwpnr-nozzlescom CTG SH 07 EU

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SLIQUID SPRAY AND SPRAY NOZZLES Nozzle flow rate

The Equation (5) has been obtained after having simplified the real problem neglecting several factors like for examplebullInmostofthepracticalapplicationcasestheflowisturbulentandnotlaminarbullFrictionlossestendtostronglyincreasewithliquidvelocitybullDependinguponthetypeofnozzleadifferentpercentageoftheavailableenergyisusedtobreakupthejetandgivethe

desired spray pattern and spray angle

For the above reason equation (5) gives reliable results if used in a limited pressure range around the pressure value where the flow rate is known with this pressure range depending upon the type of nozzleOur experience has shown that one can expect the error in the calculated value to be lower than +- 6 for pressure values ranging from 13 to 3 times the reference value

As an example a nozzle rated for 10 lpm at 3 bars would have according to equation (5) the following flow valuesa 1 bar 577 lpma 9 bar 173 lpmin real conditions it can be expected the flow rate values to beas high as 61 lpm a 1 baras low as 162 lpm a 9 barAbove considerations are to be used as a guideline only because of the many factors influencing real operations which have not been considered here for example liquid temperature viscosity and density

Possible percentage deviation from theoretical flow rate values

Also above mentioned percentage errors have to be understood for nozzles using part of the flow energy to produce wide angle spray patternsLower values can be expected for narrow angle nozzles impact nozzles and straight jet nozzles Laboratory tests and diagrams showing real flow rate values for each nozzles are used in practice when a precise result must be available

Nozzle discharge coefficient

With reference to equation (4) if we consider the pressure value to be equal to 1 (P = 1 bar) the flow rate of the nozzle becomes

K is a parameter widely used in the fire fighting industry

In some instances reference is made to the nozzle discharge coefficient or shortly to the nozzle coefficient to indicate the nozzle flow rate for a unitary pressure Of course for a given pressure value Pn the flow value will be

+ 6

+ 3

- 3

- 6

CAPACITY AT A GIVEN PRESSURE VALUEWHEN K KHOWN

NOZZLE CAPACITYFOR P=1 barQ = K P = K 1 = K

6 Qn = K Pn

21wwwpnr-nozzlescomCTG SH 07 EU

The spray angle is the opening angle which the nozzle jet of droplets forms at the moment when it leaves the nozzle orifice and it is one of the fundamental parameters for the choice of a given nozzleIn fact the amplitude of the spray angle determines in connection with the distance between the nozzle orifice and the target to be covered the spray coverage and the density of liquid sprayed with respect to the cover area See our Catalogue for description of the different nozzle spray patterns The table at the bottom of the page gives the theoretical spray width based on the nozzle spray angle and the distance from the nozzle orifice It is important to note that because of several factors like gravity forces and aerodynamic drag the spray angle value cannot be maintained but in in a limited distance normally up to 300 mm from the orifice For air assisted atomizers it is improper to use the term spray angle since no precise value can be measured Therefore the values given by Catalogues are to be intended as guidelines only

THEORETICAL SPRAY COVERAGE

at various distances from nozzle orifice

Spray 50 100 150 200 250 300 400 500 600 700 800 1000 Angle mm mm mm mm mm mm mm mm mm mm mm mm

15deg 13 26 40 53 66 79 105 132 158 184 211 263 25deg 22 44 67 89 111 133 177 222 266 310 355 443 30deg 27 54 80 107 134 161 214 268 322 375 429 536 35deg 32 63 95 126 158 189 252 315 378 441 505 631 40deg 36 73 109 146 182 218 291 364 437 510 582 728 45deg 41 83 124 166 207 249 331 414 497 580 663 828 50deg 47 93 140 187 233 280 373 466 560 653 746 933 60deg 58 116 173 231 289 346 462 577 693 808 924 1150 65deg 64 127 191 255 319 382 510 637 765 892 1020 1270 70deg 70 140 210 280 350 420 560 700 840 980 1120 1400 75deg 77 154 230 307 384 460 614 767 921 1070 1230 1530 80deg 84 168 252 336 420 504 671 839 1010 1180 1340 1680 90deg 100 200 300 400 500 600 800 1000 1200 1400 1600 2000 95deg 109 218 327 437 546 655 873 1090 1310 1530 1750 2180 100deg 119 238 358 477 596 715 953 1190 1430 1670 1910 2380 110deg 143 286 429 571 714 857 1140 1430 1710 2000 2290 2856 120deg 173 346 520 693 866 1040 1390 1730 2080 2430 2771 3464 130deg 215 429 643 858 1070 1290 1720 2150 2570 3002 3431 4289

WhereASCbull = Actual Spray CoverageTSCbull = Theoretical Spray CoverageASAbull = Actual Spray AngleTSAbull = Theoretical Spray AngleL bull = Spray Distances

TSC = 2 middot L middot ctan ( TSA )2

7

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LIQUID SPRAY AND SPRAY NOZZLES Spray angle

22 wwwpnr-nozzlescom CTG SH 07 EU

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SLIQUID SPRAY AND SPRAY NOZZLES Spray angle

Depending upon the nozzle design variations of feed pressure may have a great influence on the spray angle valueGenerally with increasing pressure turbulence full cone nozzles will produce narrower angles flat jet nozzles will show a wider angle spray while nozzles working on the deflection principle like spiral nozzles and K style flat jet nozzles will be less affected by pressure changesAll nozzles will not function properly with very low pressure values (from 05 bar down depending upon nozzle type ) with a marked decay in performance larger drops not well defined spray pattern lower spray angle values

The above pictures show spray angles for different nozzles and different pressure valuesShould your application strictly require that a given value of the spray angle is obtained under a given pressure value or pressure range of values please obtain a test report from our laboratories

Full cone nozze DDW 2235

Flat jet nozzleJCW 2245

Spiral nozzeECW 2230

Pressure 05 bar Pressure 05 bar Pressure 05 bar

Pressure 3 bar Pressure 3 bar Pressure 3 bar

Pressure 10 bar Pressure 10 bar Pressure 10 bar

Photo obtained with 120000s flashlight

picture 1

picture 4

picture 7

picture 2

picture 5

picture 8

picture 3

picture 6

picture 9

NotePicture 2 shows clearly the droplet generation mechanism as described at page 15

23wwwpnr-nozzlescomCTG SH 07 EU

Terms and definitions

A very important characteristic of a spray nozzle is a parameter called Spray Distribution which gives a precise information about how evenly the drops of the spray are distributed onto the area covered by the sprayIt is self understood that normally it is preferable to obtain the most even distribution possibleIn the past this was done through the visual examination of a diagram reporting the quantity of water contained for example in glass pipes aligned onto the spray coverage areaPnr has determined to obtain such a result in a scientific way through high technology instrumentation as shown in the pictures below showing one of our patternators and a typical distribution diagram

Now to the spray geometry and some definition letrsquos consider a nozzle with a capa-city Q at the pressure PAt every value for distance H which we call height of spray we can define a plane lsquonrsquo normal to the nozzle axis on which a line can define the intersection of the spray onto the planeThe area covered by the spray on the plane lsquonrsquo has a surface S depending from the following parametersa) Spray pattern Fb) Opening angle of the spray αc) Height of the spray H

We can then write S=S( F α H )

In case of a full cone nozzle S is a circle with diameter C and S = 0785 C2

The capacity of the nozzle flows through the surface S but each smaller area inside the surface S will probably have a different value for the flow passing through itWe introduce then the value of Specific Capacity q

1) Specific Capacity

The function q depends upon the single point (xy) in the section S and then

Determining the function q is however very expensive therefore in practice two different functions are used which give in most occurrences sufficient information

2) Linear Distribution

3) Angular distribution

part Qpart x

qx =

Diagram 1

q = limΔS 0

ΔQΔS

q = = f (x y H)part Qpart S

part Qpart φ

qφ =

ΔQ is the liquid flowing through a surface ΔSwhere ΔS is a fraction of the surface S

x and y are the local coordinates in the section planewhere H is the distance of the test surface from the nozzle orifice

partQ is the variation in capacitywhere partx is the variation of a generic linear coordinate

partQ is the variation in capacitywhere partφ is the variation of a generic angular coordinate

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LIQUID SPRAY AND SPRAY NOZZLES Spray Distribution

24 wwwpnr-nozzlescom CTG SH 07 EU

LIQUID SPRAY AND SPRAY NOZZLES Spray Distribution

Values extracted from these functions can characterize the spray and allow for drawing the diagrams defined as Distribution Curves

Analyzing the above curves it is possible to determine the type of water distribution along the spray coverage and the type of spray pattern like for example a full cone hollow cone flat or straight jet spray

Distribution measurement

The water distribution along the spray coverage is determined by means of an instrument called Patternator

A patternator consists of the following parts 1) Liquid collector2) Cell block3) Measure block4) Unloading block

The nozzle is above the instrument and it is orienta-ted in such a way the jet is collected into the upper liquid collectorThe liquid collector can be linear ( diagram 5 ) or round ( diagram 6 ) according to the test being runFrom the single parts in the collector the liquid is sent into the corresponding cells below (2)

The Measure block (3) determines the liquid content in each single cell then the unloading block (4) empties the instrument sending the liquid to the collection drain

There are two types of patternators

Analogic1 the different levels of liquid is visible through the transparent walls of the cells or pipes sometimes containing some kind of floating balls and a picture can be taken with a cameraDigital2 Delivering an automatic reading of the values in the cells the values being supplied as an electronic file from which a distribution curve can be easily obtained

Diagram 2 Linear distribution Diagram 3 Angular distribution

Diagram 4

Diagram 6 Circular collectorDiagram 5 Linear collector

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LIQUID SPRAY AND SPRAY NOZZLES Spray Distribution

Normalizing distribution curve

The values obtained from the cells of the patternator showing the water quantity collected in the single cells allow for preparing a Distribution curve which can be given as a single line curve or as a row of vertical barsThese resemble the liquid level collected into the glass pipes of the old type instrumentation

The curves prepared based on the liquid level in the single cells still are not precise they depend in fact from the testing time the longer this time the larger the liquid quantity sprayedTo eliminate the influence of time from the test it is necessary to transform the effective curves to normalized curves

Normalized4) linear distribution

Normalized5) angular distribution

Please note that Maximum value is the one belonging to the series of values measured in the cellsIn addition to the distribution it is possible to normalize the intervals to with the following formulas

Normalized 6) linear interval

Normalized 7) angular interval

The linear normalized amplitude is defined inside an interval [-1 +1]The angular normalized amplitude is defined inside an interval [0+2π]

Diagram 7 Effective linear distribution curve Diagram 8 Effective angular distribution curve

Mx

xx q

q=δ

N

πθ

2=Δ

Diagram 9 Normalized linear distribution curve Diagram 10 Normalized angular distribution curve

qx is the linear distribution of a generic cellwhere qx

M is the maximum linear distribution measured

qφ is the linear distribution of a generic cellwhere qφ

M is the maximum linear distribution measured

2 is the normalized linear amplitude of the spraywhere N is the number of active cells (active cells = cells containing liquid)

2π is the normalized angular amplitude of the spraywhere N is the number of active cells (active cells = cells containing liquid)

Mq

q

ϕ

ϕϕδ =φ

φ

φ

2

N=Δλ

2

N=Δλ

LIQU

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26 wwwpnr-nozzlescom CTG SH 07 EU

Evaluation of spray distribution

To evaluate distribution curves it is necessary to take three properties into consideration

a) UNIFORMITY b) MONOTONY c) SIMMETRY

As described in the following diagrams and definitions

a) UNIFORM A distribution that minimizes the ratio AAdeg

b) MONOTONE Is a distribution with a curve which grows on the left side and decreases on the left side c) SYMMETRIC Is a distribution which minimizes the Ratio A+A-

Based on the above definitions the following curves show the ideal situations

The three properties are then evaluated by means of the following parameters

1 Integral uniformity

2 Incremental uniformity

3 Symmetry index

Complete details about the above formulas and definition can be found in our Technical Bulletin REL 080002 which shall be released from our Technical Department on request

Diagram 12Normalized and monotone distribution

Diagram 11Normalized and monotone distribution

Diagram 14Ideal monotony

Diagram 15Ideal symmetry

Diagram 13Ideal uniformity

1001 sdot=MA

AU

1002

2 sdot=lowastσ

U

1001

sdot⎥⎦

⎤⎢⎣

sdotminus=

lowast

lowast

δ

ε

NI S

sum minus=lowast

M

i iδδε

A is the area included in the normalized curvewhere Adeg is the rest of the area included in the 2x1 rectangle

Left side is the area -1 0where Right side is the area 0 +1

A+ is the area included below the curve on the right sidewhere A- is the area included below the curve on the left side

where

where δrsquo is the value of normalized liquid content in the symmetric cell N number of cells containing liquid in half of the diagram

lowast

lowast sum=

N

N

i i

δ

δ N Number of cells containing liquid

A area included below the curve AM area included below the ideal curvewhere

sum minus= +lowast

1

N

i ii δδσ

N Number of cells containing liquid

LIQU

ID S

PRAY

AND

SPRA

Y NO

ZZLE

SLIQUID SPRAY AND SPRAY NOZZLES Spray Distribution

27wwwpnr-nozzlescomCTG SH 07 EU

Liquids are characterized for their property of undergoing continuous deformation when subjected to shear stress The property of fluids (liquids or gases) to resist flowing due to the existence of internal friction within the fluid is called visco-sity

Thus if we imagine the different layers of fluid sliding one over the other with friction we can imagine that viscosity is defined the force required to move a unit area of fluid for a unit distance Viscosity is measured with many different systems among which the most used are the following

The following table shows correspondences between the most used viscosity units

The viscosity value of a liquid depends upon the temperature therefore the viscosity value must always be given with reference to a temperature value The viscosity of water (20deg C) is 1 Centipoise and 1 Centistoke since water mass density = 1

KINEMATIC SAYBOLT SAYBOLT ENGLER VISCOSITY UNIVERSAL FUROL

Centistoke Sq feetsec SSU SSF Degrees

100 000001076 310 --- 100

500 000005382 424 --- 137

1000 00001076 588 --- 183

1566 00001686 80 --- 245

2052 00002209 100 --- 302

2515 00002707 120 --- 357

4295 00004623 200 --- 592

1080 0001163 500 523 1460

1510 0001625 700 720 2044

1942 0002090 900 921 2628

3023 0003254 1400 143 4090

3885 0004182 1800 183 5260

5394 0005806 2500 254 7300

10788 001161 5000 509 146

15103 001626 7000 712 204

19419 002092 9000 916 263

32365 003483 15000 1526 438

METHOD UNIT DIMENSIONS NOTES

1 Dynamic viscosity(Absolute viscosity) Poise ML T-1 Poise = 100 Centipoises = (1 dyne per seccm2)

2 Kinematic viscosity Stoke L2 T-1 1 Stoke = 100 Centistoke = (cm2sec)Kinematic viscosity = Dynamic viscositydensity

3 SSUSSF

One of the most widely instruments to determine is the Saybolt viscosimeter which measures the time in seconds required for a fixed volume of a given liquid to flow through an orificeSSU = Seconds Saybolt Universal relates to a smaller orifice for less viscous liquidsSSF = Seconds Saybolt Furol relates to a larger orifice for more viscous liquids

LIQUID SPRAY AND SPRAY NOZZLES Influence of liquid viscosity

LIQU

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SPRA

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S

28 wwwpnr-nozzlescom CTG SH 07 EU

Viscosity influence on nozzle flow rate

AlI nozzle Catalogue data refer to spraying water (water cinematic viscosity is equal to 1 Centistoke)A liquid with viscosity higher than water will require more energy to be pumped and sprayed and will flow with lower velocity at the same pressure and this will cause a reduction in the turbulence of the flow For the above reason nozzles working on the turbulence principle like normal full cone nozzles and whirl hollow cone nozzles will show an increase in capacity while spraying liquids with viscosity higher than water This increase is very consistent for small size nozzles where the small radius of the whirl chamber tends to cause high turbu-lence in the flow and tends to diminish and to disappear for nominal capacity valves (capacity values at 3 bar) larger than 15 liters per minute

The graph below shows for a liquid with a viscosity of about 4 Centistokes typical variations in the nozzle flow rate value for different values of the nozzle whirl chamber diameter As it may be seen these variations can be neglected in most practical applications where nozzles with whirl chamber diameters well over 3 mm are used

For other types of nozzles not working on the turbulence principle the increase on viscosity will simply reduce the liquid exit velocity at the orifice thus causing a decrease in capacity Experience shows that this decrease ranges between 3 and 6 of nominal water capacity that is to say that the variation introduced is in the same order of magnitude as the nozzle flow rate toler-ance

Viscosity influence on nozzle spray angle and spray pattern

With reference to the theory of jet break-up and droplet information it can be easily imagined that spraying a liquid more viscous than water is a difficult task

Al the properties of the spray tend to worsen therefore one can expectA higher value for the minimum operating pressure that is the pressure value which allows for obtaining a well defined 1 spray with the expected spray angle A worse spray distribution since the viscous behavior of the liquid makes it more difficult to pro-duce fine droplets and 2 to distribute them evenly with the desired spray pattern A narrower spray angle It is difficult to give guidelines since results on different nozzles at different pressures and with 3 different liquids are scarcely predictableHowever our experience shows that in many cases the use of impact nozzles can give acceptable results where all other type of nozzle failsA laboratory test or a field test are stili the safest way to obtain sound results

50

45

40

35

30

25

20

15

10

5

0 2 3 4 5 6 7 8 9

Increase Flow rate vs Whirl Chamber Diameter

Incr

ease

Flo

w R

ate

[mm

]

Whirl Chamber Diameter [mm]

LIQUID SPRAY AND SPRAY NOZZLES Influence of liquid viscosityLI

QUID

SPR

AYAN

D SP

RAY

NOZZ

LES

29wwwpnr-nozzlescomCTG SH 07 EU

With reference to the Bernoulli Rule as exposed in page 6 one can say that the pressure energy of the liquid flow at the nozzle inlet is transformed totally (minus some losses due to friction inside the nozzle) into liquid velocity at the nozzle orificeCatalogue figures give nozzle capacities when spraying waterIf the specific gravity or density of the liquid is different from that of water the available pressure energy will produce a different liquid velocity at the nozzle orificesIn other words a given quantity of energy will spray always the same quantity of liquid mass but different volumes (flow rates) according to the liquid specific gravity or density

Therefore a liquid heavier than water will exit the nozzle with a lower velocity at lower flow rate while to the contrary a liquid lighter than water will be sprayed at higher velocity at higher flow rate

The following formula is to be applied

The table below gives the value of a correction factor to obtain the flow rate of a liquid with different specific weight as water

WhereQL Liquid flow rateQW Water flow rateF Correction factor

kgliter Libregallon F

06 50 129

07 58 120

08 67 112

09 75 105

10 83 100

11 92 095

12 100 091

13 109 088

14 117 085

15 125 082

16 134 079

17 142 077

18 150 075

19 159 073

20 167 071

QL = F QW8

LIQUID SPRAY AND SPRAY NOZZLES Influence of liquid specific gravity

LIQU

ID S

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AND

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30 wwwpnr-nozzlescom CTG SH 07 EU

The spraying water impact of a nozzle depends on several factors and more precisely spray distribution pattern and spray angle The first step to calculate the impact value which is usually expressed in Kilograms per square centimeter is to deter-mine Total Theoretical lmpact Value using the following formula

The obtained value has to be multiplied by the Total Theoretical Impact per Square Centimeter Coefficient (E)The final value is the Spraying Liquid Impact expressed in kgpcm2Of course not alI the energy of the fluid vein is transferred to the impact point

A part of this energy sometimes a considerable part goes to obtain a desired spraying angle by having the liquid vein acquire a high rotational speed inside the whirl chamber The highest value of impact is obtained with straight jet nozzle and the value can be calculated multiplying spraying pressure per 19The tables below containing the Total Theoretical Impact sqcm coefficient values for different spray pattern nozzles for a dis-tance of 300 mm

[kgpcm2]

TOTAL THEORETICAL IMPACT PER SQ CM COEFFICIENT AT DISTANCE OF 300 MM (E)

Spray Flat jet nozzle Spray Full cone nozzle Spray Hollow cone nozzle Angle Angle Angle

15deg 0300 15deg 0110 25deg 0180 35deg 0130 30deg 0025 40deg 0120 50deg 0100 50deg 0010 65deg 0070 65deg 0004 60deg80deg 001002 80deg 0050 80deg 0002 100deg 0001

WhereQ is the flow rate at working pressure in lpmP is the pressure value in kgpcm2

[kgpcm2]TTI = 0024 Q P

SLI = E TTI

9

10

LIQU

ID S

PRAY

AND

SPRA

Y NO

ZZLE

SLIQUID SPRAY AND SPRAY NOZZLES Jet impact

31wwwpnr-nozzlescomCTG SH 07 EU

Jet impact diagram

A further parameter to characterize the performance of a spray nozzle is the distribution of the jet impact force which could be derived by means of mathematical methods from the values of the spray distribution onto the surface covered by the spray but which can more easily be measured with the help of specifically designed instrumentation

In some applications the jet impact force Is the most important parameter used to realize the required processSteel sheet descaling in a rolling mill is a typical example where the jet impact is required to take away the surface scale and obtain a perfectly even surfaceFor that reason special nozzles have been developed to perform this very task where service life impact value and spray distribution reach the values required for satisfactory resultThese test are performed in a laboratory equipped with a specifically designed instrumentation where the high pressures involved in these process can be reached which can measure the pressure values along a matrix of points distributed in the spray area covered by the nozzle

These values are supplied both in a table of values and as a 3D pressure diagram similar to those shown below

On such applications where producing high impact values in the jet is necessary it is of paramount importance that the liquid flow turbulence is kept to a minimum and therefore it is widely used to insert into the nozzle entrance devices designed to improve the operating conditions by forcing the liquid flow through straight passages with several different shapes by doing so the impact delivered by the spray is increased with the same feed pressure

One typical shape used by Pnr is shown on the right and the two dia-grams below show the impact force diagrams for the same nozzle with and without a flow straightener the reduction of flow turbulence can lead in increase of impact force often higher than 20Further improvements of course are available when the nozzle inside profile is properly designed in order to avoid sharp cross section changes and all surfaces are finished as smoothly as possible

Typical design of a Pnr flow straightener

Impact pressure diagram with flow straightenerImpact pressure diagram without flow straightener

LIQU

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S

LIQUID SPRAY AND SPRAY NOZZLES Jet impact

32 wwwpnr-nozzlescom CTG SH 07 EU

LIQUID SPRAY AND SPRAY NOZZLES Pressure drop through a nozzle

Pressure drop through a nozzle

Some of our customers have asked us In the past which Is the pressure drop through a nozzle since they consider a nozzle one of the parts in a piping like a valve or an elbow which causes a given pressure drop along the line

The reality is different and can be easily understood when considering the Bernoulli formula [2] as given at page 19 of this manual the formula says that the total energy of a liquid flow is made from the addition of three facors

Potential energy due to elevationbullPressure energybullVelocity energybull

When we apply the formula at the entrance and at the outlet ( the orifice ) of a nozzle and we neglect the influence of turbulence losses in between we can easily see that

The potential energy variation can be neglected because of the limited dimensions of the nozzle since the distance bullbetween the nozzle entrance and the nozzle orifice plays no role-The pressure energy variation is important since the liquid pressure value falls abruptly from the pressure inside the feed bullpipe to the ambient pressureThe velocity energy variation is also consistent since the liquid is ejected from the orifice at high speedbull

In other words the pressure energy of the liquid flowing through the orifice is suddenly transformed in liquid drops velocity which is exactly what a nozzle is designed to do

This is shown from equation [3] at page 19 which allows the exit velocity from the nozzle to be calculated from the pressure inside the pipe ( we actually consider the pressure difference between the inside of the pipe and the ambient pressure in this formula )

In other words all the energy still available at the nozzle is converted into velocity or if you so prefer you have a total pressure fall The system designer shall therefore evaluate all the pressure drop between the pump outlet flange and the nozzle entrance in order to be sure that the nozzle feed pressure is sufficient to assure the desired capacity for the liquid being sprayed

parameters valuesat nozzle outlet

nozzle inlet nozzle oulet or orice

feed pressure

inlet velocity

parameters valuesat the nozzle inlet

(A)potential elevation

energy

(A)velocity ( kinetic ) energy

(A)pressure energy

ambient pressure

exit velocity

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NOZ

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The choice of the right material for a nozzle is sometimes the most important one to do since the nozzle operating life depends upon it There are several factors to influence or shorten the nozzle operating life sometimes more than one at the same time the most important being

Wear from solid particles suspended into the liquid being sprayed1 Chemical corrosion from the liquid being sprayed 2 Chemical corrosion from the ambience outside the nozzle3 Exposure to high temperature 4 Exposure to mechanical shocks5

NOZZLE MATERIALSPnr material codes 34Properties of materials 35Mechanical properties of materials 39Chemical resistance of materials 40

NOZZLE MATERIALS

34 wwwpnr-nozzlescom CTG SH 07 EU

PNR has adopted a short code to identify construction materials for nozzles and nozzle partsHere below the most frequenty used materials

MATERIAL STANDARDS

The following standards are mentioned with reference to materials identification

NOZ

ZLE

MAT

ERIA

LS

A1 Free Cutting Steel E1 TEFLONreg (PTFE) L3 NICROFERreg 5923

A2 Carbon Steel E3 DELRINreg (POM) L4 STELLITEreg 6

A8 Zinc Plated Mild Steel E6 PERSPEXreg (PMMA) L5 HASTELLOYreg B2

A9 Nickel Plated Mild Steel E7 VITONreg (FPM) L6 HASTELLOYreg C4

B2 AISI 304 Stainless Steel E8 NBR- Sh 70 Rubber L61 HASTELLOYreg C22

B3 AISI 316 Stainless Steel E81 SANTOPRENEreg Rubber L62 ULTIMETreg

B31 AISI 316L Stainless Steel E82 KLINGERITEreg L7 NICKEL 201

B4 AISI 321 Stainless Steel E83 HYPALONreg L8 HASTELLOYreg C276

B8 AISI 309 Stainless Steel E91 Silicon L9 SANICROreg 28 SS

B81 AISI 310 Stainless Steel F12 Tungsten Carbide (TC) N1 AISI 302 Stainless Steel

C1 AISI 420 St Steel hardened F2 PIREXreg P6 ABS

C4 AISI 317 Stainless Steel F3 Rubin P7 FASIT OIL

C6 SAF 2205 Stainless Steel F4 Zapphire P8 EPDM ShA Rubber

D1 Polyvinylchloride (PVC) F5 Ceramic P9 STIROLUXreg 637

D2 Polypropylene (PP) F6 Silicon Carbide (SC) T1 Brass

D3 Polyamide (PA) G1 Cast Iron T3 Copper

D5 Powder Charged PP H1 Titanium T5 Bronze

D6 Fiberglass Charged PP L1 MONEL 400 T8 Nickel Plated Brass

D7 High Density Polyethylene L2 INCOLOYreg 825 V1 Aluminium

D8 Polyvinylidenefluoride (PVDF) L21 INCONELreg 600 V7 Aluminium ENP

STANDARD ORGANIZATION COUNTRY STANDARD CODE

AFNOR Association Franccedilaise de Normalisation France NF

AISI American Iron and Steel Institute USA AISI

ANSI American National Standards Institute USA ANSI

ASTM American Society for Testing and Materials USA ASTM

BSI British Standards Institution UK BS

DIN Deutsches Institut fuumlr Normung Germany DIN

DSIT Dansk StandardsInformation Technology Denmark DS

ISO International Organization for Standardization International ISO

JIS Japanese Institute for Standard Japan JIS

UNI Ente Nazionale di Unificazione Italy UNI

NOTEThe complete list of the Materials Codes may be requested to our Technical Service mentioning release code TGCE CODMAT

NOZZLE MATERIALS PNR material codes

35wwwpnr-nozzlescomCTG SH 07 EU

NOZ

ZLE

MAT

ERIA

LS

B1 AISI 303 STAINLESS STEEL

Chemical composition CR 1750 NI 850 S 025 Coding correspondence

Type Stainless Steel Austenitic AISI 303

Hardening Not possible BS 303 S 21

Annealing 1050 1100deg C in water DIN Wnr 14305

Welding Possible with precautions Euro X10CrNiS1809

Corrosion properties

Good resistance Atmospheric exposure food substances organic chemicalsLow resistance Chlorides reducing acids and over 800deg C

JIS SUS 303

NF Z6CN 18-09

SIS 2346

UNI XWCrNiS 1809

B3 AISI 316 STAINLESS STEEL

Chemical composition C 005 CR 170 NI 120 MO 225 Coding correspondence

Type Stainless Steel Austenitic AISI 316

Hardening Not possible BS 316 S 21

Annealing 1050 1100deg C in water DIN Wnr 14401

Welding Easy using same steel electrodes Euro X6CrNiMo17122

Corrosion properties

Good resistance Atmosphere great number of salts organic acids foodsLow resistance Solutions of reducing acids temperatures over 500deg C

JIS SUS 316

NF Z6CND 17-11

SIS 2347

UNI X5CrNiMo1712

B31 AISI 316L STAINLESS STEEL

Chemical composition C 003 CR 170 NI 130 MO 225 Coding correspondence

Type Stainless Steel Austenitic AISI 316 L

Hardening Not possible BS 316S12

Annealing 1050 1100deg C in water DIN Wnr 14404

Welding Easy using same steel electrodes Euro X3CrNiMo1810

Corrosion properties

Good resistance Atmosphere great number of salts organic acids foods salt waterLow resistance Solutions of reducing acids temperatures over 500deg C

JIS SUS 316L

NF Z2CND17-12

SIS 2348

UNI X2CrNiMo 1712

NOZZLE MATERIALS Properties of materials

36 wwwpnr-nozzlescom CTG SH 07 EU

C1 AISI 420 STAINLESS STEEL

Chemical composition C 020 CR 1300 Coding correspondence

Type Stainless Steel Martensitic AISI 420

Hardening 980deg - 1030deg C in oil BS 420 S 29

Annealing 750deg - 800deg C in air DIN Wnr 14021

Welding Possible with precautions Euro X20Cr13

Corrosion properties Good resistance Drinkable water steamgasoline oil alcohol ammonia

JIS SUS 420 J1

NF Z20C13

SIS 2303

UNI X20Cr13

C2 AISI 416 STAINLESS STEEL

Chemical composition C 012 CR 1250 S 022 Coding correspondence

Type Stainless Steel Martensitic AISI 416

Hardening 950deg - 1100deg C in oil BS 416 S 21

Annealing 750deg - 800deg C DIN Wnr ---

Welding Not possible Euro X120CrS13

Corrosion properties Good resistance Drinkable water steamgasoline oil alcohol ammonia

JIS SUS 416

NF Z12CF13

SIS ---

UNI X12CrS13

D8 POLYVINYLIDENE FLUORIDE (PVDF)

Description HIGH-MOLECULAR WEIGHT THE TOUGHEST OF THE FLUOROCARBON RESINS

Trade names amp SuppliersKYNAR (Atochem North America Inc formerly Penwalt Corporation)

SOLEF (Solvay Polymer Corporation)

Physical andMechanical Properties

Excellent resistance to abrasion and stress fatigue

Extremely pure opaque white resin

Thermal Properties UsefuI in temperatures ranging from -73 149degC (-100 300degF)Heat deflection temperature is (8090deg C at 182 Bars (176 194deg F at 264 psi)

Chemical Compatibility

Excellent chemical resistanceCan be used with wet or dry halogens most strong acids and bases aliphatics aromaticsalcohols and strong oxidizing agentsNot recommended for contact with ketones esters amines and some organic acids(fuming sulfuric acid)

NOZZLE MATERIALS Properties of materialsN

OZZL

E M

ATER

IALS

37wwwpnr-nozzlescomCTG SH 07 EU

E1 POLYTETRAFLUOROETHYLENE (PTFE)

Description FLUOROPLASTIC THAT HAVE SOME OR ALL OF THEIR HYDROGEN MOLECULESREPLACED BY FLUORINE

Trade names amp Suppliers

TEFLON TFE FEP and PFA (Dupont Polymer Products)

NEOFLON (Daikin)

FLUON (ICI Americas Inc)

SST-2SST-3 (Shamrock Technologies Inc)

Physical andMechanical Properties

Low coefficient

Low adhesiveness

Buona resistenza agli agenti atmosferici

Good weatherabilityLow resistance to creep and wear unless reinforced with glass figravebers which results in superior resistance

Thermal Properties High and low temperature stabilityHeat deflection temperatures range from 4855deg C at 182 bar (118-132deg F at 264 psi)

Chemical CompatibilityChemically inert

Totally insoluble

E3 ACETAL (ACETAL HOMOPOLYMERS AND COPOLYMERS)

Description HIGHLY CRYSTALLINE RESINS BASED ON FORMALDEHYDE POLYMERIZATION TECHNOLOGY

Trade names amp Suppliers

DELRIN (Dupont Polymer Products Corporation)

CELCON (Hoechst Celanese Corporation)

ULTRAFORM (BASF Corporation)

RTP 800 (RTP Corporation)

LUPITAL amp TENAL (Franklin Polymers Inc)

FULTRON 404 (ICI Americas Inc)

Physical andMechanical Properties

High tensile strength rigidity and esilience

High fatigue endurance

Excellent dimensional stability

Low coefficient of friction

Outstanding abrasion and wear resistance

Excellent creep resistance

Thermal Properties Heat deflection temperatures range from 110 -136deg C at 182 bars(230 - 270deg F at 264 psi) higher if glass figravelled

Chemical Compatibility

Remains stable in long-term high temperature water immersionExcellent resistance to chemicals and solvents but prolonged exposure to strong acids not recommendedNote Suitable for close-tolerance high-performance partsAvailable for machined parts or may be injection molded

NOZZLE MATERIALS Properties of materials

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38 wwwpnr-nozzlescom CTG SH 07 EU

L6 HASTELLOY C4

PHYSICAL AND MECHANICAL PROPERTIES CHEMICAL COMPOSITION CORROSION RESISTANCE

R = 650800 Mpa C = 0015 max

Very good against pitting and tensile-corrosion specially in oxydizing atmosphereResistance in welded joints definitely better than C 276 lower than C22

Rp02 = 250470 Mpa Ni = 65

HRB = 90 Cr = 160

Mo = 155

W = --

Fe = 3 max

Ti = 05

Co = 2 max

APPLICATIONSRecommended for applications with strongly oxidizing atmosphere

L61 HASTELLOY C 22

PHYSICAL AND MECHANICAL PROPERTIES CHEMICAL COMPOSITION CORROSION RESISTANCE

R = 700800 Mpa C = 001 max

Excellent performances with oxydizing atmospheres as well as for pitting and tensile-corrosion conditionsVery good resistance in reducing atmospheres and for welded joints

Rp02 = 360420 Mpa Ni = 56

HRB = 93 Cr = 22

Mo = 13

W = 3

Fe = 3

Ti = --

Co = 25 max

APPLICATIONSChemical industry (gas ducts gas washing and treatment systems phosphoric acid production) Heat exchangers pumps chlorination reactors

L8 HASTELLOY C 276

PHYSICAL AND MECHANICAL PROPERTIES CHEMICAL COMPOSITION CORROSION RESISTANCE

R = 600800 Mpa C = 0015 max

Very good in reducing and oxydizing atmospheresVery good against pitting and tensile-corrosionAcceptable resistance in welded jointsIn cast parts excessive segregation not eliminated by thermal treatment of annealing makes it convenient to use C22 or C4 qualitieswhich assure better corrosion resistance and mechanical properties

Rp02 = 300370 Mpa Ni = 57

HRB = 90 Cr = 145165

Mo = 1517

W = frac345

Fe =

V = 035 max

Co = 25 max

APPLICATIONSChemical industry (air ducts scrubbers fans) Paper industry Thermoelectric plants Steel thermal treatments

NOZ

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MAT

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LSNOZZLE MATERIALS Properties of materials

39wwwpnr-nozzlescomCTG SH 07 EU

MATERIALTENSILE STRENGHT

CORROSION RESISTANCERp 02 R

20degC 800degC 20degC 800degC

(68degF) (1408degF) (68degC) (1408degC)

AISI 302 280 100 680 200

Good sensitive to corrosionbetween grains for slow heatingand cooling in the 450-900deg Crange temperature

AISI 303 280 100 680 200 Discrete

AISI 304304L 270 90 600 100Good especially for 304L304 sensitive to corrosionbetween grains like AISI 302

AISI 309 250 100 640 220 Good Sensitive to corrosion between grains like AISI 302

AISI 310 310 170 650 270Good (gt 304 - 304L)Sensitive to corrosionbetween grains like AISI 302

AISI 316316L 270 110 560 220 Very high especially for 316L

AISI 321 210 100 540 140 Good

AISI 347 280 120 620 200 Good

AISI 416 620 70 750 90

Good in medium corrosive ambient (atmosphere water gasoline alcohol N1-13 foods)Not in high corrosive

BRASS 110-150 --- 360-410 --- Good especially when nickel plated

BRONZE 100-300 --- 200-600 --- Discrete especially with sea water

CAST IRON le 500 V 100-800 V

NICKEL ALLOYS 100-1000 V 300-1300 VVery high also for high temperature To use in the temperaturerange 800-1200deg C

PLASTICS --- --- 20-200 ---

Good also for erosionGenerally they are attackedwith oxidizers like nitric acidhalogens ect

PTFE --- --- 30-40 ---

Very high except for elementarystate of alkaline metalsand to compounds containingfluorine at high temp

DUPLEX STEEL gtAISI 3 gtAISI 3 gtAISI 3 gtAISI 3 Very high also with high temperatureand also for pitting

TITANIUM alloy 195-850 V 300-900 VVery high in oxidizing ambientVery low in reducing ambient and with compounds containing fluorine

Legend Rp 02 = 02 YIELD STRENGHT [MPa]R = ULTIMATE TENSILE STRENGHT [MPa]V = To verify time by time

NOZZLE MATERIALS Mechanical properties of materials

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73wwwpnr-nozzlescomCTG SH 07 EU

PIPI

NG

PIPINGPipes data 74Economic pipe sizes 75Pressure drop in clean steel pipes 76Flange dimensions 78Sieve size conversion chart 80

PIPING

74 wwwpnr-nozzlescom CTG SH 07 EU

The following table report the data of pipes according to ANSI B3619 that is one of the most used standards that regulate welded stainless steel pipes

DN NPS OD[mm]

SCHEDULE

5S 10S 40SSTD 80SXS

t m t m t m t m

[mm] [kgm] [mm] [kgm] [mm] [kgm] [mm] [kgm]

6 18 103 NA NA 124 028 173 037 241 048

8 14 137 NA NA 165 050 224 064 302 081

10 38 172 NA NA 165 064 231 086 320 112

15 12 213 165 081 211 101 277 128 373 164

20 34 267 165 103 211 130 287 171 391 223

25 1 334 165 131 277 212 338 254 455 328

32 1frac14 422 165 167 277 273 356 344 485 453

40 1frac12 483 165 192 277 315 368 411 508 549

50 2 603 165 242 277 399 391 551 554 759

65 2frac12 730 211 374 305 534 516 875 701 116

80 3 889 211 458 305 655 549 115 762 155

90 3frac12 1016 211 525 305 752 574 138 808 189

100 4 1143 211 592 305 849 602 163 856 226

125 5 1413 277 960 340 117 655 221 953 314

150 6 1683 277 115 340 140 711 287 1097 432

200 8 2191 277 150 376 202 818 431 1270 656

250 10 2730 340 229 419 282 927 611 1270 827

300 12 3239 396 317 457 365 953 749 1270 988

350 14 3556 396 348 478 419 NA NA NA NA

400 16 4064 419 421 478 480 NA NA NA NA

450 18 457 419 474 478 541 NA NA NA NA

500 20 508 478 602 554 696 NA NA NA NA

550 22 559 478 662 554 767 NA NA NA NA

600 24 610 554 837 635 959 NA NA NA NA

Where

DN = Nominal diameter NPD = Nominal Pipe Size OD = Outside Diameter t = Wall Thickness m = Specific WeightPIPI

NG

PIPING Pipes data

75wwwpnr-nozzlescomCTG SH 07 EU

The following Specific Pressure Drops (Y) are normally used in the good engineering practice(where Y=ΔPL ΔP Pressur Drop and L Pipe Lenght)

For pipe sizing the Velocity (V) is also usedIn the following table are shown the typical liquid velocities in steel pipes

Some fixed pressure drop values indicationsfor gate valves (fully open) consider a pressure drop of 5 metersbullfor normal bends consider a pressure drop of 5 metersbullfor a check valve consider a pressure drop of 15 metersbull

In the succeeding tables we show the velocity and specific pressure drop for several flow rates and pipe diameters

Not boiling waterY = 02divide05 bar100 m for pump discharge (07 bar100 m max if P gt 50 bar)

Y lt 0110 bar100 m for pump suction

Boiling water Y = 004divide005 bar100 m for pump suction (velocity = 03divide09 ms)

LIQUID LINE TYPE

Specific Pressure Dropsvs Velocity [ms]

0 lt V lt 2 3 lt V lt 10 10 lt V lt 20

NOT BOILING WATER

Pump suctionPump discharge (long)Discharge leads (short)Boiler feedDrainsSloped sewer

03 divide 0606 divide 0912 divide 2712 divide 2709 divide 12

-

06 divide 1209 divide 1515 divide 3715 divide 3709 divide 1509 divide 15

09 divide 1812 divide 2124 divide 4224 divide 42

-12 divide 21

HYDROCARBON LIQUIDS(normal viscosity)

Pump suctionDischarge heather (long)Discharge leads (short)Drains

05 divide 0808 divide 1112 divide 2709 divide 12

06 divide 1209 divide 1515 divide 3709 divide 15

09 divide 1812 divide 2124 divide 46

-

MEDIUM VISCOSITY OILPump suctionDischarge (short)Drains

--

03

05 divide 0901 divide 0209 divide 15

08 divide 1501 divide 0312 divide 18

OTHER WATERCooling tower Chilled waterSea water and generally foulingwater (long pipes) ()

06 divide 09 09 divide 15 12 divide 21

Note () In this case Cameron method has to be used with C=1 Y = 005 divide 012 bar100 m for principal manifold Y = 012 divide 023 bar100 m for secondary manifold

PIPI

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PIPING Economic pipe sizes

76 wwwpnr-nozzlescom CTG SH 07 EU

18rdquo 14rdquo

1 0350 0370 0200 0090 38rdquo 12rdquo

2 0705 1340 0395 0331 0223 0082 0145 0029 34rdquo

3 1060 2890 0593 0673 0333 0176 0217 0061 0125 0016 1rdquo

4 1410 4940 0788 1150 0444 0291 0290 0101 0167 0027 0110 0010

5 1760 7460 0985 1750 0556 0424 0362 0149 0209 0040 0137 0014

6 1180 2460 0667 0594 0434 0207 0251 0054 0165 0019 114rdquo

8 1580 4060 0892 1020 0579 0351 0335 0091 0219 0033 0126 0009 112rdquo

10 1110 1530 0724 0534 0418 0136 0274 0049 0158 0012 0116 0006

15 1670 3250 1090 1130 0627 0284 0411 0099 0236 0026 0174 0012

20 2rdquo 2230 5600 1450 1900 0836 0481 0549 0168 0315 0043 0233 0021

30 0212 0013 212rdquo 2170 4130 1250 1020 0823 0353 0473 0092 0348 0043

40 0283 0022 0190 0007 2900 7180 1670 1760 1100 0606 0631 0155 0465 0073

50 0354 0032 0237 0012 2090 2700 1370 0911 0789 0233 0581 0108

60 0424 0044 0284 0017 2510 3810 1650 1290 0943 0321 0697 0150

70 0495 0079 0332 0022 3rdquo 2930 5120 1920 1720 111 0434 0814 0199

80 0566 0074 0379 0028 0248 0010 312rdquo 2190 2210 126 0554 0925 0253

90 0636 0093 0427 0035 0279 0013 0209 0006 2470 2770 142 0692 1040 0319

100 0707 0114 0474 0043 0310 0015 0232 0007 4rdquo 2740 3400 158 0843 1160 0392

150 1060 0238 0711 0090 0464 0031 0349 0016 0272 0008 4110 7440 236 181 1740 0828

200 1410 0414 0948 0153 0619 0053 0466 0027 0362 0014 315 314 2330 1450

250 1760 0625 1190 0233 0774 0080 0581 0040 0453 0021 5rdquo 2900 2200

300 2120 0889 1420 0324 0930 0112 0698 0055 0543 0030 0352 0011 3480 3070

350 2470 1190 1660 0438 1080 0150 0815 0074 0634 0040 0411 0014 6rdquo 4070 4160

400 2830 1550 1900 0563 1240 0195 0935 0096 0724 0051 0469 0018 0341 0007 4650 5380

450 3180 1930 2130 0707 1390 0242 1050 0120 0815 0063 0528 0022 0366 0009 5230 6790

500 3540 2380 2370 0867 1550 0298 1170 0147 0902 0076 0587 0027 0407 0011

550 3880 2870 2610 1040 1700 0354 1280 0174 0991 0092 0645 0032 0447 0013

600 4240 3390 2840 1220 1860 0418 1400 0204 1090 0110 0704 0037 0488 0015

650 4590 5560 3080 1420 2010 0486 1510 0239 1180 0127 0762 0043 0529 0017

700 4950 4550 3320 1650 2170 0560 1630 0275 1270 0146 0821 0050 0569 0020

750 5300 5200 3560 1880 2320 0637 1750 0314 1360 0164 0879 0057 0610 0023

800 3790 2130 2480 0721 1860 0354 1450 0185 0936 0064 0651 0025 8rdquo

850 4030 2390 2630 0805 1980 0395 1540 0209 1000 0072 0692 0028 0403 0007

900 2790 0901 2090 0438 1630 0232 1050 0008 0732 0032 0427 0008

950 2940 1000 2210 0486 1720 0258 1120 0087 0773 0036 0451 0010

1000 3100 1110 2320 0534 1810 0284 1170 0096 0814 0039 0474 0011

1100 3410 1290 2560 0643 1990 0341 1290 0116 0895 0047 0522 0012

1200 3720 1 580 2800 0763 2170 0403 1410 0135 0974 0055 0569 0015

1300 3030 0890 2360 0473 1530 0157 1060 0063 0616 0017

1400 3260 1020 2540 0544 1640 0183 1140 0072 0664 0019

1500 3490 1170 2720 0617 176 0208 1220 0083 0712 0022

1600 3720 1330 2890 0697 1880 0234 1300 0093 0758 0025

1700 10rdquo 3950 1490 3080 0784 1990 0260 1380 0104 0806 0028

1800 0546 0010 3260 0875 2110 0290 1470 0116 0854 0032

1900 0575 0012 3440 0965 2230 0323 1550 0129 0901 0034

2000 0606 0012 3617 1060 2340 0356 1630 0143 0946 0037

2200 0667 0015 3980 1280 2580 0429 1790 0172 1050 0045

2400 0727 0017 12rdquo 2820 0507 1950 0200 1140 0053

2600 0788 0021 0563 0009 3050 0589 2110 0234 1230 0061

2800 0848 0023 0606 0010 14rdquo 3280 0676 2280 0268 1330 0070

3000 0909 0026 0649 0011 0532 0007 3520 0773 2440 0306 1420 0080

3500 1060 0035 0760 0015 0620 0009 4110 105 2850 0416 1660 0108

4000 1210 0045 0866 0020 0709 0012 16rdquo 4690 135 3250 0532 1900 0139

4500 1360 0056 0976 0025 0798 0015 0606 0007 3660 0674 2130 0173

5000 1520 0069 1080 0029 0886 0018 0674 0009 4070 0822 2370 0212

6000 1810 0097 1290 0042 1070 0026 0808 0013 18rdquo 4880 1160 2850 0301

7000 2120 0130 1510 0055 1240 0035 0940 0017 0741 0010 5690 1580 3310 0403

8000 2420 0168 1730 0072 1420 0045 1080 0022 0847 0012 6510 2050 3790 0525

9000 2730 0210 1950 0091 1600 0056 1210 0027 0954 0015 4270 0659

10000 3030 0257 2170 0111 1770 0067 1350 0033 1050 0019 4740 0801

Legend Q Water Flow Rate (Lpm) V Velocity (ms) Y Specific Pressure Drops (bar100m)Water at ambient temperature in straight pipe

SPECIfIC PRESSURE DROPS fOR WATER fLOW IN CLEAN STEEL PIPE SCH 10S

Q V Y V Y V Y V Y V Y V Y V Y V Y [lm] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m]

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77wwwpnr-nozzlescomCTG SH 07 EU

SPECIfIC PRESSURE DROPS fOR WATER fLOW IN CLEAN STEEL PIPE SCH 40S

Legend Q Water Flow Rate (Lpm) V Velocity (ms) Y Specific Pressure Drops (bar100m)Water at ambient temperature in straight pipe

18rdquo 14rdquo

1 0458 0726 0251 0170 38rdquo 12rdquo

2 0918 2590 0501 0600 0272 0136 0170 0044 34rdquo

3 1380 5590 0752 1220 0407 029 0255 0091 0144 0023 1rdquo

4 1840 9570 1000 2090 0543 048 0340 0151 0192 0038 0120 0012

5 2290 14450 1250 3180 0679 070 0425 0223 0241 0057 0150 0017

6 1500 4460 0815 0980 0510 0309 0289 0077 0180 0024 114rdquo

8 2010 7360 1090 1690 0680 0524 0385 0129 0240 0041 0138 0011 112rdquo

10 1360 2520 0850 0798 0481 0193 0300 0061 0172 0015 0127 0008

15 2040 5370 1280 1690 0722 0403 0450 0124 0258 0032 019 0015

20 2rdquo 2720 9240 1700 2840 0962 0683 0600 0210 0344 0054 0254 0026

30 0231 0016 212rdquo 2550 6170 1440 1450 0900 0442 0517 0114 038 0053

40 0308 0027 0216 0010 3400 10720 1920 2500 1200 0758 0689 0193 0507 0091

50 0385 0039 0270 0017 2410 3830 1500 1140 0861 029 0634 0135

60 0462 0055 0324 0023 2890 5410 1800 1610 103 0400 0761 0187

70 0539 0098 0378 0031 3rdquo 3370 7270 2100 2150 1210 0541 0888 0248

80 0616 0092 0432 0039 028 0014 312rdquo 2400 2760 1380 0690 1010 0315

90 0693 0115 0486 0048 0315 0017 0235 0008 2700 3470 1550 0862 1140 0397

100 0770 0141 0540 0059 035 002 0261 0010 4rdquo 3000 4250 1720 1050 1270 0488

150 1150 0295 0810 0125 0524 0042 0392 0021 0304 0011 4500 9300 2580 2260 1900 1030

200 1540 0512 1080 0212 0699 0072 0523 0036 0405 0019 3440 3910 2540 1810

250 1920 0773 1350 0322 0874 0108 0653 0053 0507 0028 5rdquo 3170 2740

300 2310 1100 1620 0449 105 0152 0784 0074 0608 004 0387 0014 3800 3820

350 2690 1470 1890 0606 122 0203 0915 0099 0710 0053 0452 0018 6rdquo 4440 5180

400 3080 1920 2160 0780 14 0264 1050 0128 0811 0068 0516 0023 0375 0009 5070 6690

450 3460 2390 2430 0979 157 0328 1180 0161 0912 0084 0581 0028 0402 0012 5710 8450

500 3850 2950 2700 1200 175 0403 1310 0196 1010 0101 0646 0034 0447 0014

550 4230 3550 2970 1440 192 0479 1440 0232 1110 0122 0710 0041 0491 0016

600 4620 4200 3240 1690 2100 0566 1570 0273 1220 0146 0775 0047 0536 0019

650 5000 6880 3510 1970 2270 0658 1700 0319 1320 0169 0839 0055 0581 0022

700 5390 5630 3780 2280 2450 0759 1830 0368 1420 0194 0904 0063 0625 0025

750 577 6440 4050 2600 2620 0863 1960 042 1520 0218 0968 0072 067 0029

800 4320 2950 2800 0977 2090 0473 1620 0246 1030 0081 0715 0032 8rdquo

850 4590 3310 2970 1090 2220 0528 1720 0277 1100 0091 076 0036 0439 0009

900 3150 1220 2350 0585 1820 0308 1160 0100 0804 0041 0465 001

950 3320 1350 248 0649 1930 0342 1230 0111 0849 0045 0491 0012

1000 3500 1500 261 0714 2030 0377 1290 0122 0894 0049 0516 0013

1100 3850 1750 2870 0860 2230 0452 1420 0147 0983 0059 0568 0015

1200 4200 2140 3140 1020 2430 0534 1550 0172 1070 0069 0620 0018

1300 3400 1190 2640 0627 1680 0200 1160 008 0671 0021

1400 3660 1370 2840 0722 1810 0232 1250 0091 0723 0024

1500 3920 1560 3040 0818 1940 0264 1340 0105 0775 0027

1600 4180 1780 3240 0924 2070 0297 1430 0118 0826 0031

1700 10rdquo 4440 1990 3450 1040 2190 0331 1520 0132 0878 0035

1800 0590 0012 3650 1160 2320 0369 1610 0147 0930 0039

1900 0622 0014 3850 1280 2450 041 1700 0163 0981 0042

2000 0655 0015 40500 1410 2580 0452 1790 0181 1030 0046

2200 0721 0018 4460 1700 2840 0545 1970 0217 1140 0056

2400 0786 0021 12rdquo 3100 0645 2140 0253 1240 0065

2600 0852 0025 0600 001 3360 0749 2320 0296 1340 0076

2800 0917 0028 0646 0012 14rdquo 3610 0859 2500 0339 1450 0087

3000 0983 0032 0692 0013 0573 0008 3870 0982 268 0387 1550 0099

3500 1150 0043 0810 0018 0668 0011 4520 1330 3130 0526 1810 0134

4000 1310 0055 0923 0023 0764 0014 16rdquo 5160 1720 3570 0673 2070 0172

4500 1470 0068 1040 0029 0860 0018 0658 0009 4020 0853 2320 0214

5000 1640 0084 1150 0034 0955 0022 0731 0011 4470 1040 2580 0262

6000 1960 0118 1380 0049 1150 0031 0877 0016 18rdquo 5360 1470 3100 0373

7000 2290 0158 1610 0065 1340 0042 1020 0021 0808 0012 6250 2000 3610 0499

8000 2620 0204 1840 0085 1530 0054 1170 0027 0924 0015 7150 2590 4130 065

9000 2950 0256 2080 0107 1720 0067 1310 0033 1040 0019 4650 0816

10000 3280 0313 2310 0130 1910 0081 1460 0041 1150 0023 5160 0992

Q V Y V P V Y V Y V Y V Y V Y V Y [lm] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m]

PIPI

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78 wwwpnr-nozzlescom CTG SH 07 EU

10 75 12 038 4 11 50

15 80 12 044 4 11 55

20 90 14 065 4 11 65

25 100 14 082 4 11 75

32 120 14 117 4 14 90

40 130 14 139 4 14 100

50 140 14 162 4 14 110

65 160 14 214 4 14 130

80 190 16 343 4 18 150

100 210 16 422 4 18 170

125 240 18 611 8 18 200

150 265 18 751 8 18 225

175 295 20 1020 8 18 255

200 320 20 1230 8 18 280

250 375 22 1850 12 18 335

300 440 22 2550 12 22 395

350 490 22 3180 12 22 445

400 540 22 3850 16 22 495

450 595 22 4700 16 22 550

500 645 24 6040 20 22 600

PN 6 (UNI 6091)

ND 6 (DIN 2527) DN Flange Holes

D t W N Oslash a

90 14 063 4 14 60

95 14 071 4 14 65

105 16 101 4 14 75

115 16 122 4 14 85

140 16 180 4 18 100

150 16 209 4 18 110

165 18 287 4 18 125

185 18 365 4 18 145

200 20 461 8 18 160

220 20 565 8 18 180

250 22 812 8 18 210

285 22 1050 8 22 240

315 24 1410 8 22 270

340 24 1620 12 22 295

405 28 2510 12 25 355

460 28 3520 12 25 410

520 30 4820 16 25 470

580 32 6350 16 30 525

640 32 7720 20 30 585

715 34 1020 20 33 650

PN 16 (UNI 6093)

ND 16 (DIN 2527) Dimensions Holes

D t W N Oslash a

ND 10 (DIN 2527) Dimensions Holes

D t W N Oslash a

90 14 063 4 14 60

95 14 071 4 14 65

105 16 101 4 14 75

115 16 122 4 14 85

140 16 180 4 18 100

150 16 209 4 18 110

165 18 287 4 18 125

185 18 365 4 18 145

200 20 461 4 18 160

220 20 565 8 18 180

250 22 812 8 18 210

285 22 1050 8 22 240

315 24 1410 8 22 270

340 24 1650 8 22 295

395 26 2410 12 22 350

445 26 3080 12 22 400

505 26 3960 16 22 460

565 26 4960 16 25 515

615 26 5860 20 25 565

670 28 7530 20 25 620

PN 10 (UNI 6092)

LegendaDN Nominal DiameterD Flange External Diametert Flange ThicknessW Flange WeightN Hole NumberOslash Hole Diametera Hole axis

PIPING Flange dimensionsPI

PIN

G

Blind flanges to DIN 2527

79wwwpnr-nozzlescomCTG SH 07 EU

LegendDN Nominal DiameterD Flange External Diametert Flange ThicknessW Flange WeightN Hole NumberOslash Hole Diametera Hole axis

12rsquorsquo 889 111 08 4 159 603

34rsquorsquo 984 127 09 6 159 698

1rsquorsquo 1079 143 10 4 159 794

114rsquorsquo 1175 159 13 4 159 889

112rsquorsquo 1270 175 14 4 159 984

2rsquorsquo 1524 190 18 4 190 1206

212rsquorsquo 1778 222 32 4 190 1397

3rsquorsquo 1905 238 41 4 190 1524

312rsquorsquo 2159 238 59 8 190 1778

4rsquorsquo 2286 238 77 8 190 1905

5rsquorsquo 2540 238 91 8 222 2159

6rsquorsquo 2794 254 118 8 222 2413

8rsquorsquo 3429 286 204 8 222 2984

10rsquorsquo 4064 302 318 12 254 3619

12rsquorsquo 4826 317 500 12 254 4318

14rsquorsquo 5334 349 600 12 286 4762

16rsquorsquo 5969 365 770 16 286 5397

18rsquorsquo 6350 397 950 16 317 5778

20rsquorsquo 6985 429 1230 20 317 6350

22rsquorsquo 7493 460 1510 20 349 6921

ANSI 150 lb DN Flange Holes

D t W N Oslash a

952 143 10 4 159 667

1175 159 14 4 190 825

1238 175 18 4 190 889

1333 206 27 4 190 984

1556 222 36 4 222 1143

1651 254 45 8 190 1270

190S 286 68 8 222 1492

209S 317 91 8 222 1683

2286 349 132 8 254 1841

2540 349 150 8 254 2000

2794 381 200 8 254 2349

3175 413 277 12 254 2699

3810 476 450 12 286 3302

4445 540 700 16 317 3873

5207 571 103 16 349 4508

5842 603 141 20 349 5143

6477 635 181 20 381 5715

7112 667 228 24 381 6286

7747 698 282 24 413 6858

8382 730 311 24 444 7429

ANSI 400 lb Dimensions Holes

D t W N Oslash a

ANSI 300 lb Dimensions Holes

D t W N Oslash a

952 143 10 4 159 667

1175 159 14 4 190 825

1238 175 18 4 190 889

1333 190 27 4 190 984

1556 206 32 4 220 1143

1651 222 36 8 190 1270

1905 254 54 8 222 1492

2095 286 73 8 222 1683

2286 302 95 8 222 1841

2540 317 122 8 222 2000

2794 349 159 8 222 2349

3175 365 227 12 222 2699

3810 413 370 12 254 3302

4445 476 580 16 286 3873

5207 508 840 16 317 4508

5842 540 1070 20 317 5143

6477 571 1390 20 349 5715

7112 603 3900 24 349 6286

7747 635 2230 24 349 6858

8382 667 2700 24 413 7429

PIPING Flange dimensions

PIPI

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flanges to ANSI norms

80 wwwpnr-nozzlescom CTG SH 07 EU

PIPI

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Sieves are used both for determining the particle size distribution of a granular material and to filter solid particles in a liquid Normally the sieve is made with a fabric whose characteristic dimensions areL is the Opening Width (free passage)D is the Diameter of the wireP is the Pitch of the wireS is the Thickness of the fabricTo classify particle sizes there is some Sieve Series according to specific standardsthe most known are Tyler Sieve Series US Sieve Series UK Sieve SerieshellipThe Tyler mesh size indicates exactly the number of openings per linear inch of mesh

L[microm]

TYLER Sieve[Mesh No]

ASTM E11 Sieve[Mesh No]

BS 410 Sieve[Mesh No]

DIN 4188 Sieve[mm]

5 2500 2500 0005

10 1250 1250 0010

15 800 800 0015

20 625 635 625 0020

22 0022

25 500 500 500 0025

28 0028

32 na 450 440 0032

36 0036

38 400 400 400

40 0040

45 325 325 350 0045

50 0050

53 270 270 300

56 0056

63 250 230 240 0063

71 0071

75 200 200 200

80 0080

90 170 170 170 0090

100 0100

106 150 140 150

112 0112

125 115 120 120 0125

140 0140

150 100 100 100

160 0160

180 80 80 85 0180

200 0200

In the german standard (DIN norm 4188) the Opening Width (L) is given in millimeters

PIPING Sieve size conversion chartPI

PIN

G

81wwwpnr-nozzlescomCTG SH 07 EU

L[microm]

TYLER Sieve[Mesh No]

ASTM E11 Sieve[Mesh No]

BS 410 Sieve[Mesh No]

DIN 4188 Sieve[mm]

212 65 70 72

250 60 60 60 0250

280 0280

300 48 50 52

315 0315

355 42 45 44 0355

400 0400

425 35 40 36

450 0450

500 32 35 30 0500

560 0560

600 28 30 25

630 0630

710 24 25 22 0710

800 0800

850 20 20 18

900 0900

1000 16 18 16 1000

1120 1120

1180 14 16 14

1250 1250

1400 12 14 12 1400

1600 1600

1700 10 12 10

1800 1800

2000 9 10 8 2000

2240 2240

2360 8 8 7

2500 2500

2800 7 7 6 2800

3150 3150

3350 6 6 5

3550 3550

4000 5 5 4 4000

4500 4500

4750 4 4 35

5000 5000

5600 35 35 3

6700 3 0265 in 1

8000 25 516 in na

Applicable standards areISO 565 (1987) ISO 3310 (1999) ASTM E 11-70 (1995)DIN 4188 (1977) BS 410 (1986) AFNOR NFX11-501 (1987)

Legend Q Water Flow Rate V Velocity P Pressure drop Pressure drop in bar per 100 meters of straight pipe (water at ambient temperature)

PIPING Sieve size conversion chart

PIPI

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Besides its main range of nozzles for industrial applications PNR manufactures a wide range of complementary products and systems to optimize the use of spray jets and fluids control in most of the modern industrial processes

PNR PRODUCT RANGE

CTG AC

CTG LS

CTG UG

CTG AZ

Complementary Products andAssembly FittingsA complete line of nipples clamps swivel joints and everything that helps you to assemble align and service your spraying systems quickly and easilyAir blowers mixing eductors filters clean-ing guns and lances hose reels steam heaters pressure tanks quick couplings to help you build up a professional system upgraded to the latest standards

Tank washing systemsA complete range from simple fixed washing heads to the two-axis heads from mushroom nozzles to fluid driven reaction heads up to the motor driven washing heads equipped with a pneu-matic or electric motorAll for the inside cleaning of industrial tanks according to the latest technology accessories included

Spray nozzles for industrial applicationsOne of the world most complete lines of nozzles for numberless industrial appli-cations Nozzles with a wide openings range various types of vanes several spray patterns anti-clog design available in small and big dimensions and made in many food-grade materials like PFTE and Stainless Steel 316L with threaded and flanged connections

Air assisted atomizersUltrasonic classic and automatic atomiz-ers for the finest atomization in any insus-trial process High quality machining and strict quality control ensure your systems top professional resultsProgramming and control panels for an easy assembly of complete humidification systems

CTG SP

CTG PM

CTG SW

CTG LN

Spraydry nozzlesAir assisted or hydraulic high pressure ato-mizers made in high-quality metal alloys or tungsten carbideA complete line of nozzles for the moder-nization of existing facilities at competitive prices To ensure highly accurate results and a long service life these nozzles are manufactured with the finest materials and technologically advanced machines

Paper mill productsA line of products specifically designed for perfect results on paper mill machines including disc nozzles patented for self-cleaning filters flat jet nozzles with orifices in sapphire ruby and ceramic oscillating tubes equipped with a computer driven motor

Steelwork nozzlesA complete line of nozzles for steelwork applications including continuous casting air atomizers and conventional nozzles descaling nozzles for high pressure sys-tems dovetail tips for cylinders cooling and high capacity flanged nozzles for coke quenching

Gas cooling lancesSpillback or air assited lances for gas coo-ling in steelworks cement plants and other industrial applicationsWe can supply spare parts upgrade your plant and even supply a complete PLC driven system to enhance the towers per-formances to the highest efficiency level allowed by today technology

wwwpnr-nozzlescomCTG SH 07 EU

CTG SH 07 EUwwwpnr-nozzlescom

STAM

PATO

IN E

U 09

09

copy B

ellamp

Tany

Our products are distributed through

We are also represented in

PNR AmericaPNR Asia

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Page 15: SPRAY CTG SH 07 EU ENGINEERING HANDBOOK

15wwwpnr-nozzlescomCTG SH 07 EU

LIQU

ID S

PRAY

AND

SPRA

Y NO

ZZLE

S

The diagram on the right shows the idealization of the process generating the droplets while the water jet exiting the nozzle is breaking up The theoretical model whose exactitude seems to be confirmed by scientific research considers that the liquid flowing through the nozzle and past the orifice edge evolves into a liquid lamina This lamina because of instability induced by aerodynamic forces breaks up first into elongated ligaments more or less cylindrical and later into droplets

Taking the above process as a guideline one can easily appreciate that the average droplet diameter is some what related to several factors like

1 The thickness of the lamina itself2 The evenness of the lamina 3 A steady flow and break up process

For what has been said above and limited to hydraulic nozzles the system designer looking for fine droplet sprays should consider that the following results can be expected

Impact nozzles best

Centrifugal hollow cone nozzles multiple full cone nozzles good

Turbulence nozzles fair

Centrifugal Vaneless full cones worst

The above choice is obviously based on the droplet generation process which changes from one nozzle type to another and allows to forecast which type is best fro the applicationAn additional consideration of interest is that the expected droplet size changes for the same type of nozzle with the nozzle size it is possible to generate smaller drops spraying the same water quantity at the same pressure using a greater number of smaller nozzles

In cases where energy requirements are not a problem or where a specified small droplet diameter is required the smal-lest droplets can be obtained by means of an air assisted atomizerHere the shear action of a high speed compressed air flow is used with several different techniques to obtain a value for SMD (Sauter Mean Diameter) of 50 microns and less

LIQUID SPRAY AND SPRAY NOZZLES Spray generation

Theoretical Mechanism of droplet generation

16 wwwpnr-nozzlescom CTG SH 07 EU

LIQU

ID S

PRAY

AND

SPRA

Y NO

ZZLE

SLIQUID SPRAY AND SPRAY NOZZLES Droplet spectrum

The atomization of a liquid by means of a compressible fluid like air steam or a gas is defined pneumatic two-phase or twin-fluid atomization Many industrial processes require the availability of finely atomized droplets and the techniques to produce atomized jets have been largely improved in the recent years In addition more sophisticated process techniques have incre-ased the demand for a precise definition about the characteristics of the spray and are now available to the design engineer Since many years PNR can supply upon request complete documentation containing test reports about the more interesting and additional information which are described below for all PNR products

Laser Interpherometer Test (By Pdpa)

PNR droplet size test reports are performed by means of a Laser Interpherometer (Phase Doppler Particle Analyzer) where two laser beams cross in a given point of the spray and define a test probe area Droplet flying through the probe area cause a light scatter which is picked up by the instrument receiver and processed through a computer in order to obtain relevant information about the spray characteristics

Report information

Report information is made of data printed on three pages where the first page contains the most interesting data which make possible to base process calculations upon precise data about spraying degrees process efficiency and jet behavior in operational ambiance These pages contain the Sauter Mean Diameter value whose knowledge is of special importance in heat exchange calculations about evaporative gas cooling processes since it gives the possibility of evaluating the exchange surface obtained by atomizing for a given liquid volume

The upper picture at page 18 referring to atomizing water by means compressed air shows two following histograms

bull Distribution curve of droplet diameter (micron)

bull Distribution curve of droplet velocities (mps)

and the below described values

bull Arithmetic Mean Diameter (D10)

bull Surface Mean Diameter (D20)

bull Volume Mean Diameter (D30)

bull Sauter Mean Diameter (D32)

ARITHMETIC MEAN DIAMETERThis is a diameter value which multiplied by the local num-ber of droplets in the sample equals the addition of alI droplets diameters

SURFACE MEAN DIAMETERThis is the diameter of such a droplet whose surface mul-tiplied by the total droplets number equals the sum of alI droplets surfaces

VOLUME MEAN DIAMETERThis is the diameter of such a droplet whose volume mul-tiplied by the total droplets number equals the sum of all droplets volumes

SAUTER MEAN DIAMETERThis is the diameter of such a droplet whose volumearea ratio equals the ratio between the sum of alI droplet volu-mes divided by the sum of alI droplet surfaces

D10 = Σ i ni di

Σ i ni

D20 = Σ i ni di

2

Σ i ni

D30 = Σ i ni di

3

Σ i ni

D32 = Σ i ni di

3

Σ i di

2

3

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AttemptsDroplet number crossing probe area during test time This includes both validated and not validated droplet

Correct Count Criteria A mathematic correction is applied to validate droplets which cross Probe Area in a peripheral belt or to droplets without a perfect spherical shape so that alI validated droplets parameters are homogeneous (This correction is necessary so that there is direct proportionally between laser beam phase and droplet number diameter)

Number Density It is the number of droplets passing through probe area within test time

Probe areaThis is the area where the two laser beams are crossing so determining the probe area AlI droplets intersecting probe area are checked droplets which respect given parameters for shape are taken as valid droplets and make up the sample whose size and velocity parameters are reported

ValidationsDroplets accepted based on given shape parameters to make up for test sample

Velocity MeanDroplets distribution speed histogram (ms)

Volume Flow RateIt is the volume measured in cubic centimeter per second of the validated droplets making up for the sample

Volume FluxIt is the flow rate per specific area measured in cubic centimeter per second and square centimeter of the validated droplets making up the sample

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LIQUID SPRAY AND SPRAY NOZZLES Droplet spectrum

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SLIQUID SPRAY AND SPRAY NOZZLES Droplet spectrum

PNR can supply upon request complete documentation con-taining test reports about the aforementioned parameters and additional information for all PNR atomizersThe diagrams beside show the distribution of droplet diameters and droplet velocities of a spray under test as available to our customers

In the photo beside a test being performed at our laboratoriesWe use a computer driven laser interpherometer to detect and record the spray parameters while fluid capacities and feed pressure values are monitored through high precision instru-ments

IMPORTANT NOTE

The droplet size values measured with a PDPA instrumentation are representative of a well specified volume inside the spray and taking measurements in a different volume they can be considerably differentA correct spray droplet size characterization requires then not only tests being performed in several volumes within the spray but also that those measure volumes are selected with regard to the process the droplets are expected to performAs an example the droplet characterization of a spray should define how many volumes have been tested and which are the coordinates of each single test volume in relation to the nozzle orifice

Most of the times pretending to describe the droplet spectrum of a spray nozzle at a given pressure with only one diagram is therefore not correct

19wwwpnr-nozzlescomCTG SH 07 EU

In order to calculate the discharge flow rate from a given nozzle the Bernoulli law shall be used which says that the energy of a liquid flow remains unchanged over alI the sections of the flow Friction and turbu-lence losses are neglected which is reasonable for our purposes if the cal-culation is performed over two sections not too far away from each other

The Bernoulli law can be written as follows

Therefore if we consider two sections of the same pipe section A and section B we can write that the flow energy remains constant in the form

If we finally consider that the two above sections are taken immediately before and immediately after the nozzle outlet orifice being

ZA = ZB PB = 0 (PA is a differential pressure referred at the atmosphere pressure)

VA cong 0 negligible as compared to VB (for orifice diameter much smaller than the duct diameter)

we shall come to the formula

When we define a new constant k to include the value of the nozzle orifice outlet area (A) then we come to the following equation which says that for a nozzle spraying into a room at ambient pressure the exiting flow is proportional to the feed line pressure

Considering now two different pressure values for the same nozzle since k is a constant quantity we can write that

and derive from the above an equation that makes it possible to calculate the nozzle flow value at any given pressure value once the flow value at another pressure value is known

The energy of a given liquid flow crossing a given pipe section is composed of three parts namely

P Pressure energy of liquid particle per volume unit

1 ρV2 Kinetic energy of liquid particle per volume unit2ρgz Potential Energy of liquid particle per volume unit

Where ρ = density of liquid g = gravitational acceleration

z = height respect to one plane of reference V = liquid velocity

PA = 1 ρVB 2 rArr

2

K = Q rArr

PK =

Q1 = Q2 rArr

P1 P2

Q = A V rArr

Q = A x C x P rArr

1 P + 1 ρV2 + ρgz = E

2

VB = 2 PA rArr ρ

Q1 = P1

Q2 P2

3 V = C P

4 Q = K P

2 PA + 1 ρVA 2 + ρgzA = PB + 1 ρVB

2 + ρgzB 2 2

EXIT VELOCITY DEPENDS UPON PRESSURE

NOZZLE CAPACITY DEPENDS UPON PRESSURE

NOZZLE CAPACITYAT A DIFFERENT PRESSURE

5 Q2 = Q1 P2

P1

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LIQUID SPRAY AND SPRAY NOZZLES Nozzle flow rate

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SLIQUID SPRAY AND SPRAY NOZZLES Nozzle flow rate

The Equation (5) has been obtained after having simplified the real problem neglecting several factors like for examplebullInmostofthepracticalapplicationcasestheflowisturbulentandnotlaminarbullFrictionlossestendtostronglyincreasewithliquidvelocitybullDependinguponthetypeofnozzleadifferentpercentageoftheavailableenergyisusedtobreakupthejetandgivethe

desired spray pattern and spray angle

For the above reason equation (5) gives reliable results if used in a limited pressure range around the pressure value where the flow rate is known with this pressure range depending upon the type of nozzleOur experience has shown that one can expect the error in the calculated value to be lower than +- 6 for pressure values ranging from 13 to 3 times the reference value

As an example a nozzle rated for 10 lpm at 3 bars would have according to equation (5) the following flow valuesa 1 bar 577 lpma 9 bar 173 lpmin real conditions it can be expected the flow rate values to beas high as 61 lpm a 1 baras low as 162 lpm a 9 barAbove considerations are to be used as a guideline only because of the many factors influencing real operations which have not been considered here for example liquid temperature viscosity and density

Possible percentage deviation from theoretical flow rate values

Also above mentioned percentage errors have to be understood for nozzles using part of the flow energy to produce wide angle spray patternsLower values can be expected for narrow angle nozzles impact nozzles and straight jet nozzles Laboratory tests and diagrams showing real flow rate values for each nozzles are used in practice when a precise result must be available

Nozzle discharge coefficient

With reference to equation (4) if we consider the pressure value to be equal to 1 (P = 1 bar) the flow rate of the nozzle becomes

K is a parameter widely used in the fire fighting industry

In some instances reference is made to the nozzle discharge coefficient or shortly to the nozzle coefficient to indicate the nozzle flow rate for a unitary pressure Of course for a given pressure value Pn the flow value will be

+ 6

+ 3

- 3

- 6

CAPACITY AT A GIVEN PRESSURE VALUEWHEN K KHOWN

NOZZLE CAPACITYFOR P=1 barQ = K P = K 1 = K

6 Qn = K Pn

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The spray angle is the opening angle which the nozzle jet of droplets forms at the moment when it leaves the nozzle orifice and it is one of the fundamental parameters for the choice of a given nozzleIn fact the amplitude of the spray angle determines in connection with the distance between the nozzle orifice and the target to be covered the spray coverage and the density of liquid sprayed with respect to the cover area See our Catalogue for description of the different nozzle spray patterns The table at the bottom of the page gives the theoretical spray width based on the nozzle spray angle and the distance from the nozzle orifice It is important to note that because of several factors like gravity forces and aerodynamic drag the spray angle value cannot be maintained but in in a limited distance normally up to 300 mm from the orifice For air assisted atomizers it is improper to use the term spray angle since no precise value can be measured Therefore the values given by Catalogues are to be intended as guidelines only

THEORETICAL SPRAY COVERAGE

at various distances from nozzle orifice

Spray 50 100 150 200 250 300 400 500 600 700 800 1000 Angle mm mm mm mm mm mm mm mm mm mm mm mm

15deg 13 26 40 53 66 79 105 132 158 184 211 263 25deg 22 44 67 89 111 133 177 222 266 310 355 443 30deg 27 54 80 107 134 161 214 268 322 375 429 536 35deg 32 63 95 126 158 189 252 315 378 441 505 631 40deg 36 73 109 146 182 218 291 364 437 510 582 728 45deg 41 83 124 166 207 249 331 414 497 580 663 828 50deg 47 93 140 187 233 280 373 466 560 653 746 933 60deg 58 116 173 231 289 346 462 577 693 808 924 1150 65deg 64 127 191 255 319 382 510 637 765 892 1020 1270 70deg 70 140 210 280 350 420 560 700 840 980 1120 1400 75deg 77 154 230 307 384 460 614 767 921 1070 1230 1530 80deg 84 168 252 336 420 504 671 839 1010 1180 1340 1680 90deg 100 200 300 400 500 600 800 1000 1200 1400 1600 2000 95deg 109 218 327 437 546 655 873 1090 1310 1530 1750 2180 100deg 119 238 358 477 596 715 953 1190 1430 1670 1910 2380 110deg 143 286 429 571 714 857 1140 1430 1710 2000 2290 2856 120deg 173 346 520 693 866 1040 1390 1730 2080 2430 2771 3464 130deg 215 429 643 858 1070 1290 1720 2150 2570 3002 3431 4289

WhereASCbull = Actual Spray CoverageTSCbull = Theoretical Spray CoverageASAbull = Actual Spray AngleTSAbull = Theoretical Spray AngleL bull = Spray Distances

TSC = 2 middot L middot ctan ( TSA )2

7

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LIQUID SPRAY AND SPRAY NOZZLES Spray angle

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SLIQUID SPRAY AND SPRAY NOZZLES Spray angle

Depending upon the nozzle design variations of feed pressure may have a great influence on the spray angle valueGenerally with increasing pressure turbulence full cone nozzles will produce narrower angles flat jet nozzles will show a wider angle spray while nozzles working on the deflection principle like spiral nozzles and K style flat jet nozzles will be less affected by pressure changesAll nozzles will not function properly with very low pressure values (from 05 bar down depending upon nozzle type ) with a marked decay in performance larger drops not well defined spray pattern lower spray angle values

The above pictures show spray angles for different nozzles and different pressure valuesShould your application strictly require that a given value of the spray angle is obtained under a given pressure value or pressure range of values please obtain a test report from our laboratories

Full cone nozze DDW 2235

Flat jet nozzleJCW 2245

Spiral nozzeECW 2230

Pressure 05 bar Pressure 05 bar Pressure 05 bar

Pressure 3 bar Pressure 3 bar Pressure 3 bar

Pressure 10 bar Pressure 10 bar Pressure 10 bar

Photo obtained with 120000s flashlight

picture 1

picture 4

picture 7

picture 2

picture 5

picture 8

picture 3

picture 6

picture 9

NotePicture 2 shows clearly the droplet generation mechanism as described at page 15

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Terms and definitions

A very important characteristic of a spray nozzle is a parameter called Spray Distribution which gives a precise information about how evenly the drops of the spray are distributed onto the area covered by the sprayIt is self understood that normally it is preferable to obtain the most even distribution possibleIn the past this was done through the visual examination of a diagram reporting the quantity of water contained for example in glass pipes aligned onto the spray coverage areaPnr has determined to obtain such a result in a scientific way through high technology instrumentation as shown in the pictures below showing one of our patternators and a typical distribution diagram

Now to the spray geometry and some definition letrsquos consider a nozzle with a capa-city Q at the pressure PAt every value for distance H which we call height of spray we can define a plane lsquonrsquo normal to the nozzle axis on which a line can define the intersection of the spray onto the planeThe area covered by the spray on the plane lsquonrsquo has a surface S depending from the following parametersa) Spray pattern Fb) Opening angle of the spray αc) Height of the spray H

We can then write S=S( F α H )

In case of a full cone nozzle S is a circle with diameter C and S = 0785 C2

The capacity of the nozzle flows through the surface S but each smaller area inside the surface S will probably have a different value for the flow passing through itWe introduce then the value of Specific Capacity q

1) Specific Capacity

The function q depends upon the single point (xy) in the section S and then

Determining the function q is however very expensive therefore in practice two different functions are used which give in most occurrences sufficient information

2) Linear Distribution

3) Angular distribution

part Qpart x

qx =

Diagram 1

q = limΔS 0

ΔQΔS

q = = f (x y H)part Qpart S

part Qpart φ

qφ =

ΔQ is the liquid flowing through a surface ΔSwhere ΔS is a fraction of the surface S

x and y are the local coordinates in the section planewhere H is the distance of the test surface from the nozzle orifice

partQ is the variation in capacitywhere partx is the variation of a generic linear coordinate

partQ is the variation in capacitywhere partφ is the variation of a generic angular coordinate

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LIQUID SPRAY AND SPRAY NOZZLES Spray Distribution

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LIQUID SPRAY AND SPRAY NOZZLES Spray Distribution

Values extracted from these functions can characterize the spray and allow for drawing the diagrams defined as Distribution Curves

Analyzing the above curves it is possible to determine the type of water distribution along the spray coverage and the type of spray pattern like for example a full cone hollow cone flat or straight jet spray

Distribution measurement

The water distribution along the spray coverage is determined by means of an instrument called Patternator

A patternator consists of the following parts 1) Liquid collector2) Cell block3) Measure block4) Unloading block

The nozzle is above the instrument and it is orienta-ted in such a way the jet is collected into the upper liquid collectorThe liquid collector can be linear ( diagram 5 ) or round ( diagram 6 ) according to the test being runFrom the single parts in the collector the liquid is sent into the corresponding cells below (2)

The Measure block (3) determines the liquid content in each single cell then the unloading block (4) empties the instrument sending the liquid to the collection drain

There are two types of patternators

Analogic1 the different levels of liquid is visible through the transparent walls of the cells or pipes sometimes containing some kind of floating balls and a picture can be taken with a cameraDigital2 Delivering an automatic reading of the values in the cells the values being supplied as an electronic file from which a distribution curve can be easily obtained

Diagram 2 Linear distribution Diagram 3 Angular distribution

Diagram 4

Diagram 6 Circular collectorDiagram 5 Linear collector

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LIQUID SPRAY AND SPRAY NOZZLES Spray Distribution

Normalizing distribution curve

The values obtained from the cells of the patternator showing the water quantity collected in the single cells allow for preparing a Distribution curve which can be given as a single line curve or as a row of vertical barsThese resemble the liquid level collected into the glass pipes of the old type instrumentation

The curves prepared based on the liquid level in the single cells still are not precise they depend in fact from the testing time the longer this time the larger the liquid quantity sprayedTo eliminate the influence of time from the test it is necessary to transform the effective curves to normalized curves

Normalized4) linear distribution

Normalized5) angular distribution

Please note that Maximum value is the one belonging to the series of values measured in the cellsIn addition to the distribution it is possible to normalize the intervals to with the following formulas

Normalized 6) linear interval

Normalized 7) angular interval

The linear normalized amplitude is defined inside an interval [-1 +1]The angular normalized amplitude is defined inside an interval [0+2π]

Diagram 7 Effective linear distribution curve Diagram 8 Effective angular distribution curve

Mx

xx q

q=δ

N

πθ

2=Δ

Diagram 9 Normalized linear distribution curve Diagram 10 Normalized angular distribution curve

qx is the linear distribution of a generic cellwhere qx

M is the maximum linear distribution measured

qφ is the linear distribution of a generic cellwhere qφ

M is the maximum linear distribution measured

2 is the normalized linear amplitude of the spraywhere N is the number of active cells (active cells = cells containing liquid)

2π is the normalized angular amplitude of the spraywhere N is the number of active cells (active cells = cells containing liquid)

Mq

q

ϕ

ϕϕδ =φ

φ

φ

2

N=Δλ

2

N=Δλ

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Evaluation of spray distribution

To evaluate distribution curves it is necessary to take three properties into consideration

a) UNIFORMITY b) MONOTONY c) SIMMETRY

As described in the following diagrams and definitions

a) UNIFORM A distribution that minimizes the ratio AAdeg

b) MONOTONE Is a distribution with a curve which grows on the left side and decreases on the left side c) SYMMETRIC Is a distribution which minimizes the Ratio A+A-

Based on the above definitions the following curves show the ideal situations

The three properties are then evaluated by means of the following parameters

1 Integral uniformity

2 Incremental uniformity

3 Symmetry index

Complete details about the above formulas and definition can be found in our Technical Bulletin REL 080002 which shall be released from our Technical Department on request

Diagram 12Normalized and monotone distribution

Diagram 11Normalized and monotone distribution

Diagram 14Ideal monotony

Diagram 15Ideal symmetry

Diagram 13Ideal uniformity

1001 sdot=MA

AU

1002

2 sdot=lowastσ

U

1001

sdot⎥⎦

⎤⎢⎣

sdotminus=

lowast

lowast

δ

ε

NI S

sum minus=lowast

M

i iδδε

A is the area included in the normalized curvewhere Adeg is the rest of the area included in the 2x1 rectangle

Left side is the area -1 0where Right side is the area 0 +1

A+ is the area included below the curve on the right sidewhere A- is the area included below the curve on the left side

where

where δrsquo is the value of normalized liquid content in the symmetric cell N number of cells containing liquid in half of the diagram

lowast

lowast sum=

N

N

i i

δ

δ N Number of cells containing liquid

A area included below the curve AM area included below the ideal curvewhere

sum minus= +lowast

1

N

i ii δδσ

N Number of cells containing liquid

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SLIQUID SPRAY AND SPRAY NOZZLES Spray Distribution

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Liquids are characterized for their property of undergoing continuous deformation when subjected to shear stress The property of fluids (liquids or gases) to resist flowing due to the existence of internal friction within the fluid is called visco-sity

Thus if we imagine the different layers of fluid sliding one over the other with friction we can imagine that viscosity is defined the force required to move a unit area of fluid for a unit distance Viscosity is measured with many different systems among which the most used are the following

The following table shows correspondences between the most used viscosity units

The viscosity value of a liquid depends upon the temperature therefore the viscosity value must always be given with reference to a temperature value The viscosity of water (20deg C) is 1 Centipoise and 1 Centistoke since water mass density = 1

KINEMATIC SAYBOLT SAYBOLT ENGLER VISCOSITY UNIVERSAL FUROL

Centistoke Sq feetsec SSU SSF Degrees

100 000001076 310 --- 100

500 000005382 424 --- 137

1000 00001076 588 --- 183

1566 00001686 80 --- 245

2052 00002209 100 --- 302

2515 00002707 120 --- 357

4295 00004623 200 --- 592

1080 0001163 500 523 1460

1510 0001625 700 720 2044

1942 0002090 900 921 2628

3023 0003254 1400 143 4090

3885 0004182 1800 183 5260

5394 0005806 2500 254 7300

10788 001161 5000 509 146

15103 001626 7000 712 204

19419 002092 9000 916 263

32365 003483 15000 1526 438

METHOD UNIT DIMENSIONS NOTES

1 Dynamic viscosity(Absolute viscosity) Poise ML T-1 Poise = 100 Centipoises = (1 dyne per seccm2)

2 Kinematic viscosity Stoke L2 T-1 1 Stoke = 100 Centistoke = (cm2sec)Kinematic viscosity = Dynamic viscositydensity

3 SSUSSF

One of the most widely instruments to determine is the Saybolt viscosimeter which measures the time in seconds required for a fixed volume of a given liquid to flow through an orificeSSU = Seconds Saybolt Universal relates to a smaller orifice for less viscous liquidsSSF = Seconds Saybolt Furol relates to a larger orifice for more viscous liquids

LIQUID SPRAY AND SPRAY NOZZLES Influence of liquid viscosity

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Viscosity influence on nozzle flow rate

AlI nozzle Catalogue data refer to spraying water (water cinematic viscosity is equal to 1 Centistoke)A liquid with viscosity higher than water will require more energy to be pumped and sprayed and will flow with lower velocity at the same pressure and this will cause a reduction in the turbulence of the flow For the above reason nozzles working on the turbulence principle like normal full cone nozzles and whirl hollow cone nozzles will show an increase in capacity while spraying liquids with viscosity higher than water This increase is very consistent for small size nozzles where the small radius of the whirl chamber tends to cause high turbu-lence in the flow and tends to diminish and to disappear for nominal capacity valves (capacity values at 3 bar) larger than 15 liters per minute

The graph below shows for a liquid with a viscosity of about 4 Centistokes typical variations in the nozzle flow rate value for different values of the nozzle whirl chamber diameter As it may be seen these variations can be neglected in most practical applications where nozzles with whirl chamber diameters well over 3 mm are used

For other types of nozzles not working on the turbulence principle the increase on viscosity will simply reduce the liquid exit velocity at the orifice thus causing a decrease in capacity Experience shows that this decrease ranges between 3 and 6 of nominal water capacity that is to say that the variation introduced is in the same order of magnitude as the nozzle flow rate toler-ance

Viscosity influence on nozzle spray angle and spray pattern

With reference to the theory of jet break-up and droplet information it can be easily imagined that spraying a liquid more viscous than water is a difficult task

Al the properties of the spray tend to worsen therefore one can expectA higher value for the minimum operating pressure that is the pressure value which allows for obtaining a well defined 1 spray with the expected spray angle A worse spray distribution since the viscous behavior of the liquid makes it more difficult to pro-duce fine droplets and 2 to distribute them evenly with the desired spray pattern A narrower spray angle It is difficult to give guidelines since results on different nozzles at different pressures and with 3 different liquids are scarcely predictableHowever our experience shows that in many cases the use of impact nozzles can give acceptable results where all other type of nozzle failsA laboratory test or a field test are stili the safest way to obtain sound results

50

45

40

35

30

25

20

15

10

5

0 2 3 4 5 6 7 8 9

Increase Flow rate vs Whirl Chamber Diameter

Incr

ease

Flo

w R

ate

[mm

]

Whirl Chamber Diameter [mm]

LIQUID SPRAY AND SPRAY NOZZLES Influence of liquid viscosityLI

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With reference to the Bernoulli Rule as exposed in page 6 one can say that the pressure energy of the liquid flow at the nozzle inlet is transformed totally (minus some losses due to friction inside the nozzle) into liquid velocity at the nozzle orificeCatalogue figures give nozzle capacities when spraying waterIf the specific gravity or density of the liquid is different from that of water the available pressure energy will produce a different liquid velocity at the nozzle orificesIn other words a given quantity of energy will spray always the same quantity of liquid mass but different volumes (flow rates) according to the liquid specific gravity or density

Therefore a liquid heavier than water will exit the nozzle with a lower velocity at lower flow rate while to the contrary a liquid lighter than water will be sprayed at higher velocity at higher flow rate

The following formula is to be applied

The table below gives the value of a correction factor to obtain the flow rate of a liquid with different specific weight as water

WhereQL Liquid flow rateQW Water flow rateF Correction factor

kgliter Libregallon F

06 50 129

07 58 120

08 67 112

09 75 105

10 83 100

11 92 095

12 100 091

13 109 088

14 117 085

15 125 082

16 134 079

17 142 077

18 150 075

19 159 073

20 167 071

QL = F QW8

LIQUID SPRAY AND SPRAY NOZZLES Influence of liquid specific gravity

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The spraying water impact of a nozzle depends on several factors and more precisely spray distribution pattern and spray angle The first step to calculate the impact value which is usually expressed in Kilograms per square centimeter is to deter-mine Total Theoretical lmpact Value using the following formula

The obtained value has to be multiplied by the Total Theoretical Impact per Square Centimeter Coefficient (E)The final value is the Spraying Liquid Impact expressed in kgpcm2Of course not alI the energy of the fluid vein is transferred to the impact point

A part of this energy sometimes a considerable part goes to obtain a desired spraying angle by having the liquid vein acquire a high rotational speed inside the whirl chamber The highest value of impact is obtained with straight jet nozzle and the value can be calculated multiplying spraying pressure per 19The tables below containing the Total Theoretical Impact sqcm coefficient values for different spray pattern nozzles for a dis-tance of 300 mm

[kgpcm2]

TOTAL THEORETICAL IMPACT PER SQ CM COEFFICIENT AT DISTANCE OF 300 MM (E)

Spray Flat jet nozzle Spray Full cone nozzle Spray Hollow cone nozzle Angle Angle Angle

15deg 0300 15deg 0110 25deg 0180 35deg 0130 30deg 0025 40deg 0120 50deg 0100 50deg 0010 65deg 0070 65deg 0004 60deg80deg 001002 80deg 0050 80deg 0002 100deg 0001

WhereQ is the flow rate at working pressure in lpmP is the pressure value in kgpcm2

[kgpcm2]TTI = 0024 Q P

SLI = E TTI

9

10

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SLIQUID SPRAY AND SPRAY NOZZLES Jet impact

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Jet impact diagram

A further parameter to characterize the performance of a spray nozzle is the distribution of the jet impact force which could be derived by means of mathematical methods from the values of the spray distribution onto the surface covered by the spray but which can more easily be measured with the help of specifically designed instrumentation

In some applications the jet impact force Is the most important parameter used to realize the required processSteel sheet descaling in a rolling mill is a typical example where the jet impact is required to take away the surface scale and obtain a perfectly even surfaceFor that reason special nozzles have been developed to perform this very task where service life impact value and spray distribution reach the values required for satisfactory resultThese test are performed in a laboratory equipped with a specifically designed instrumentation where the high pressures involved in these process can be reached which can measure the pressure values along a matrix of points distributed in the spray area covered by the nozzle

These values are supplied both in a table of values and as a 3D pressure diagram similar to those shown below

On such applications where producing high impact values in the jet is necessary it is of paramount importance that the liquid flow turbulence is kept to a minimum and therefore it is widely used to insert into the nozzle entrance devices designed to improve the operating conditions by forcing the liquid flow through straight passages with several different shapes by doing so the impact delivered by the spray is increased with the same feed pressure

One typical shape used by Pnr is shown on the right and the two dia-grams below show the impact force diagrams for the same nozzle with and without a flow straightener the reduction of flow turbulence can lead in increase of impact force often higher than 20Further improvements of course are available when the nozzle inside profile is properly designed in order to avoid sharp cross section changes and all surfaces are finished as smoothly as possible

Typical design of a Pnr flow straightener

Impact pressure diagram with flow straightenerImpact pressure diagram without flow straightener

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LIQUID SPRAY AND SPRAY NOZZLES Jet impact

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LIQUID SPRAY AND SPRAY NOZZLES Pressure drop through a nozzle

Pressure drop through a nozzle

Some of our customers have asked us In the past which Is the pressure drop through a nozzle since they consider a nozzle one of the parts in a piping like a valve or an elbow which causes a given pressure drop along the line

The reality is different and can be easily understood when considering the Bernoulli formula [2] as given at page 19 of this manual the formula says that the total energy of a liquid flow is made from the addition of three facors

Potential energy due to elevationbullPressure energybullVelocity energybull

When we apply the formula at the entrance and at the outlet ( the orifice ) of a nozzle and we neglect the influence of turbulence losses in between we can easily see that

The potential energy variation can be neglected because of the limited dimensions of the nozzle since the distance bullbetween the nozzle entrance and the nozzle orifice plays no role-The pressure energy variation is important since the liquid pressure value falls abruptly from the pressure inside the feed bullpipe to the ambient pressureThe velocity energy variation is also consistent since the liquid is ejected from the orifice at high speedbull

In other words the pressure energy of the liquid flowing through the orifice is suddenly transformed in liquid drops velocity which is exactly what a nozzle is designed to do

This is shown from equation [3] at page 19 which allows the exit velocity from the nozzle to be calculated from the pressure inside the pipe ( we actually consider the pressure difference between the inside of the pipe and the ambient pressure in this formula )

In other words all the energy still available at the nozzle is converted into velocity or if you so prefer you have a total pressure fall The system designer shall therefore evaluate all the pressure drop between the pump outlet flange and the nozzle entrance in order to be sure that the nozzle feed pressure is sufficient to assure the desired capacity for the liquid being sprayed

parameters valuesat nozzle outlet

nozzle inlet nozzle oulet or orice

feed pressure

inlet velocity

parameters valuesat the nozzle inlet

(A)potential elevation

energy

(A)velocity ( kinetic ) energy

(A)pressure energy

ambient pressure

exit velocity

LIQU

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The choice of the right material for a nozzle is sometimes the most important one to do since the nozzle operating life depends upon it There are several factors to influence or shorten the nozzle operating life sometimes more than one at the same time the most important being

Wear from solid particles suspended into the liquid being sprayed1 Chemical corrosion from the liquid being sprayed 2 Chemical corrosion from the ambience outside the nozzle3 Exposure to high temperature 4 Exposure to mechanical shocks5

NOZZLE MATERIALSPnr material codes 34Properties of materials 35Mechanical properties of materials 39Chemical resistance of materials 40

NOZZLE MATERIALS

34 wwwpnr-nozzlescom CTG SH 07 EU

PNR has adopted a short code to identify construction materials for nozzles and nozzle partsHere below the most frequenty used materials

MATERIAL STANDARDS

The following standards are mentioned with reference to materials identification

NOZ

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A1 Free Cutting Steel E1 TEFLONreg (PTFE) L3 NICROFERreg 5923

A2 Carbon Steel E3 DELRINreg (POM) L4 STELLITEreg 6

A8 Zinc Plated Mild Steel E6 PERSPEXreg (PMMA) L5 HASTELLOYreg B2

A9 Nickel Plated Mild Steel E7 VITONreg (FPM) L6 HASTELLOYreg C4

B2 AISI 304 Stainless Steel E8 NBR- Sh 70 Rubber L61 HASTELLOYreg C22

B3 AISI 316 Stainless Steel E81 SANTOPRENEreg Rubber L62 ULTIMETreg

B31 AISI 316L Stainless Steel E82 KLINGERITEreg L7 NICKEL 201

B4 AISI 321 Stainless Steel E83 HYPALONreg L8 HASTELLOYreg C276

B8 AISI 309 Stainless Steel E91 Silicon L9 SANICROreg 28 SS

B81 AISI 310 Stainless Steel F12 Tungsten Carbide (TC) N1 AISI 302 Stainless Steel

C1 AISI 420 St Steel hardened F2 PIREXreg P6 ABS

C4 AISI 317 Stainless Steel F3 Rubin P7 FASIT OIL

C6 SAF 2205 Stainless Steel F4 Zapphire P8 EPDM ShA Rubber

D1 Polyvinylchloride (PVC) F5 Ceramic P9 STIROLUXreg 637

D2 Polypropylene (PP) F6 Silicon Carbide (SC) T1 Brass

D3 Polyamide (PA) G1 Cast Iron T3 Copper

D5 Powder Charged PP H1 Titanium T5 Bronze

D6 Fiberglass Charged PP L1 MONEL 400 T8 Nickel Plated Brass

D7 High Density Polyethylene L2 INCOLOYreg 825 V1 Aluminium

D8 Polyvinylidenefluoride (PVDF) L21 INCONELreg 600 V7 Aluminium ENP

STANDARD ORGANIZATION COUNTRY STANDARD CODE

AFNOR Association Franccedilaise de Normalisation France NF

AISI American Iron and Steel Institute USA AISI

ANSI American National Standards Institute USA ANSI

ASTM American Society for Testing and Materials USA ASTM

BSI British Standards Institution UK BS

DIN Deutsches Institut fuumlr Normung Germany DIN

DSIT Dansk StandardsInformation Technology Denmark DS

ISO International Organization for Standardization International ISO

JIS Japanese Institute for Standard Japan JIS

UNI Ente Nazionale di Unificazione Italy UNI

NOTEThe complete list of the Materials Codes may be requested to our Technical Service mentioning release code TGCE CODMAT

NOZZLE MATERIALS PNR material codes

35wwwpnr-nozzlescomCTG SH 07 EU

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B1 AISI 303 STAINLESS STEEL

Chemical composition CR 1750 NI 850 S 025 Coding correspondence

Type Stainless Steel Austenitic AISI 303

Hardening Not possible BS 303 S 21

Annealing 1050 1100deg C in water DIN Wnr 14305

Welding Possible with precautions Euro X10CrNiS1809

Corrosion properties

Good resistance Atmospheric exposure food substances organic chemicalsLow resistance Chlorides reducing acids and over 800deg C

JIS SUS 303

NF Z6CN 18-09

SIS 2346

UNI XWCrNiS 1809

B3 AISI 316 STAINLESS STEEL

Chemical composition C 005 CR 170 NI 120 MO 225 Coding correspondence

Type Stainless Steel Austenitic AISI 316

Hardening Not possible BS 316 S 21

Annealing 1050 1100deg C in water DIN Wnr 14401

Welding Easy using same steel electrodes Euro X6CrNiMo17122

Corrosion properties

Good resistance Atmosphere great number of salts organic acids foodsLow resistance Solutions of reducing acids temperatures over 500deg C

JIS SUS 316

NF Z6CND 17-11

SIS 2347

UNI X5CrNiMo1712

B31 AISI 316L STAINLESS STEEL

Chemical composition C 003 CR 170 NI 130 MO 225 Coding correspondence

Type Stainless Steel Austenitic AISI 316 L

Hardening Not possible BS 316S12

Annealing 1050 1100deg C in water DIN Wnr 14404

Welding Easy using same steel electrodes Euro X3CrNiMo1810

Corrosion properties

Good resistance Atmosphere great number of salts organic acids foods salt waterLow resistance Solutions of reducing acids temperatures over 500deg C

JIS SUS 316L

NF Z2CND17-12

SIS 2348

UNI X2CrNiMo 1712

NOZZLE MATERIALS Properties of materials

36 wwwpnr-nozzlescom CTG SH 07 EU

C1 AISI 420 STAINLESS STEEL

Chemical composition C 020 CR 1300 Coding correspondence

Type Stainless Steel Martensitic AISI 420

Hardening 980deg - 1030deg C in oil BS 420 S 29

Annealing 750deg - 800deg C in air DIN Wnr 14021

Welding Possible with precautions Euro X20Cr13

Corrosion properties Good resistance Drinkable water steamgasoline oil alcohol ammonia

JIS SUS 420 J1

NF Z20C13

SIS 2303

UNI X20Cr13

C2 AISI 416 STAINLESS STEEL

Chemical composition C 012 CR 1250 S 022 Coding correspondence

Type Stainless Steel Martensitic AISI 416

Hardening 950deg - 1100deg C in oil BS 416 S 21

Annealing 750deg - 800deg C DIN Wnr ---

Welding Not possible Euro X120CrS13

Corrosion properties Good resistance Drinkable water steamgasoline oil alcohol ammonia

JIS SUS 416

NF Z12CF13

SIS ---

UNI X12CrS13

D8 POLYVINYLIDENE FLUORIDE (PVDF)

Description HIGH-MOLECULAR WEIGHT THE TOUGHEST OF THE FLUOROCARBON RESINS

Trade names amp SuppliersKYNAR (Atochem North America Inc formerly Penwalt Corporation)

SOLEF (Solvay Polymer Corporation)

Physical andMechanical Properties

Excellent resistance to abrasion and stress fatigue

Extremely pure opaque white resin

Thermal Properties UsefuI in temperatures ranging from -73 149degC (-100 300degF)Heat deflection temperature is (8090deg C at 182 Bars (176 194deg F at 264 psi)

Chemical Compatibility

Excellent chemical resistanceCan be used with wet or dry halogens most strong acids and bases aliphatics aromaticsalcohols and strong oxidizing agentsNot recommended for contact with ketones esters amines and some organic acids(fuming sulfuric acid)

NOZZLE MATERIALS Properties of materialsN

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37wwwpnr-nozzlescomCTG SH 07 EU

E1 POLYTETRAFLUOROETHYLENE (PTFE)

Description FLUOROPLASTIC THAT HAVE SOME OR ALL OF THEIR HYDROGEN MOLECULESREPLACED BY FLUORINE

Trade names amp Suppliers

TEFLON TFE FEP and PFA (Dupont Polymer Products)

NEOFLON (Daikin)

FLUON (ICI Americas Inc)

SST-2SST-3 (Shamrock Technologies Inc)

Physical andMechanical Properties

Low coefficient

Low adhesiveness

Buona resistenza agli agenti atmosferici

Good weatherabilityLow resistance to creep and wear unless reinforced with glass figravebers which results in superior resistance

Thermal Properties High and low temperature stabilityHeat deflection temperatures range from 4855deg C at 182 bar (118-132deg F at 264 psi)

Chemical CompatibilityChemically inert

Totally insoluble

E3 ACETAL (ACETAL HOMOPOLYMERS AND COPOLYMERS)

Description HIGHLY CRYSTALLINE RESINS BASED ON FORMALDEHYDE POLYMERIZATION TECHNOLOGY

Trade names amp Suppliers

DELRIN (Dupont Polymer Products Corporation)

CELCON (Hoechst Celanese Corporation)

ULTRAFORM (BASF Corporation)

RTP 800 (RTP Corporation)

LUPITAL amp TENAL (Franklin Polymers Inc)

FULTRON 404 (ICI Americas Inc)

Physical andMechanical Properties

High tensile strength rigidity and esilience

High fatigue endurance

Excellent dimensional stability

Low coefficient of friction

Outstanding abrasion and wear resistance

Excellent creep resistance

Thermal Properties Heat deflection temperatures range from 110 -136deg C at 182 bars(230 - 270deg F at 264 psi) higher if glass figravelled

Chemical Compatibility

Remains stable in long-term high temperature water immersionExcellent resistance to chemicals and solvents but prolonged exposure to strong acids not recommendedNote Suitable for close-tolerance high-performance partsAvailable for machined parts or may be injection molded

NOZZLE MATERIALS Properties of materials

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L6 HASTELLOY C4

PHYSICAL AND MECHANICAL PROPERTIES CHEMICAL COMPOSITION CORROSION RESISTANCE

R = 650800 Mpa C = 0015 max

Very good against pitting and tensile-corrosion specially in oxydizing atmosphereResistance in welded joints definitely better than C 276 lower than C22

Rp02 = 250470 Mpa Ni = 65

HRB = 90 Cr = 160

Mo = 155

W = --

Fe = 3 max

Ti = 05

Co = 2 max

APPLICATIONSRecommended for applications with strongly oxidizing atmosphere

L61 HASTELLOY C 22

PHYSICAL AND MECHANICAL PROPERTIES CHEMICAL COMPOSITION CORROSION RESISTANCE

R = 700800 Mpa C = 001 max

Excellent performances with oxydizing atmospheres as well as for pitting and tensile-corrosion conditionsVery good resistance in reducing atmospheres and for welded joints

Rp02 = 360420 Mpa Ni = 56

HRB = 93 Cr = 22

Mo = 13

W = 3

Fe = 3

Ti = --

Co = 25 max

APPLICATIONSChemical industry (gas ducts gas washing and treatment systems phosphoric acid production) Heat exchangers pumps chlorination reactors

L8 HASTELLOY C 276

PHYSICAL AND MECHANICAL PROPERTIES CHEMICAL COMPOSITION CORROSION RESISTANCE

R = 600800 Mpa C = 0015 max

Very good in reducing and oxydizing atmospheresVery good against pitting and tensile-corrosionAcceptable resistance in welded jointsIn cast parts excessive segregation not eliminated by thermal treatment of annealing makes it convenient to use C22 or C4 qualitieswhich assure better corrosion resistance and mechanical properties

Rp02 = 300370 Mpa Ni = 57

HRB = 90 Cr = 145165

Mo = 1517

W = frac345

Fe =

V = 035 max

Co = 25 max

APPLICATIONSChemical industry (air ducts scrubbers fans) Paper industry Thermoelectric plants Steel thermal treatments

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MATERIALTENSILE STRENGHT

CORROSION RESISTANCERp 02 R

20degC 800degC 20degC 800degC

(68degF) (1408degF) (68degC) (1408degC)

AISI 302 280 100 680 200

Good sensitive to corrosionbetween grains for slow heatingand cooling in the 450-900deg Crange temperature

AISI 303 280 100 680 200 Discrete

AISI 304304L 270 90 600 100Good especially for 304L304 sensitive to corrosionbetween grains like AISI 302

AISI 309 250 100 640 220 Good Sensitive to corrosion between grains like AISI 302

AISI 310 310 170 650 270Good (gt 304 - 304L)Sensitive to corrosionbetween grains like AISI 302

AISI 316316L 270 110 560 220 Very high especially for 316L

AISI 321 210 100 540 140 Good

AISI 347 280 120 620 200 Good

AISI 416 620 70 750 90

Good in medium corrosive ambient (atmosphere water gasoline alcohol N1-13 foods)Not in high corrosive

BRASS 110-150 --- 360-410 --- Good especially when nickel plated

BRONZE 100-300 --- 200-600 --- Discrete especially with sea water

CAST IRON le 500 V 100-800 V

NICKEL ALLOYS 100-1000 V 300-1300 VVery high also for high temperature To use in the temperaturerange 800-1200deg C

PLASTICS --- --- 20-200 ---

Good also for erosionGenerally they are attackedwith oxidizers like nitric acidhalogens ect

PTFE --- --- 30-40 ---

Very high except for elementarystate of alkaline metalsand to compounds containingfluorine at high temp

DUPLEX STEEL gtAISI 3 gtAISI 3 gtAISI 3 gtAISI 3 Very high also with high temperatureand also for pitting

TITANIUM alloy 195-850 V 300-900 VVery high in oxidizing ambientVery low in reducing ambient and with compounds containing fluorine

Legend Rp 02 = 02 YIELD STRENGHT [MPa]R = ULTIMATE TENSILE STRENGHT [MPa]V = To verify time by time

NOZZLE MATERIALS Mechanical properties of materials

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PIPINGPipes data 74Economic pipe sizes 75Pressure drop in clean steel pipes 76Flange dimensions 78Sieve size conversion chart 80

PIPING

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The following table report the data of pipes according to ANSI B3619 that is one of the most used standards that regulate welded stainless steel pipes

DN NPS OD[mm]

SCHEDULE

5S 10S 40SSTD 80SXS

t m t m t m t m

[mm] [kgm] [mm] [kgm] [mm] [kgm] [mm] [kgm]

6 18 103 NA NA 124 028 173 037 241 048

8 14 137 NA NA 165 050 224 064 302 081

10 38 172 NA NA 165 064 231 086 320 112

15 12 213 165 081 211 101 277 128 373 164

20 34 267 165 103 211 130 287 171 391 223

25 1 334 165 131 277 212 338 254 455 328

32 1frac14 422 165 167 277 273 356 344 485 453

40 1frac12 483 165 192 277 315 368 411 508 549

50 2 603 165 242 277 399 391 551 554 759

65 2frac12 730 211 374 305 534 516 875 701 116

80 3 889 211 458 305 655 549 115 762 155

90 3frac12 1016 211 525 305 752 574 138 808 189

100 4 1143 211 592 305 849 602 163 856 226

125 5 1413 277 960 340 117 655 221 953 314

150 6 1683 277 115 340 140 711 287 1097 432

200 8 2191 277 150 376 202 818 431 1270 656

250 10 2730 340 229 419 282 927 611 1270 827

300 12 3239 396 317 457 365 953 749 1270 988

350 14 3556 396 348 478 419 NA NA NA NA

400 16 4064 419 421 478 480 NA NA NA NA

450 18 457 419 474 478 541 NA NA NA NA

500 20 508 478 602 554 696 NA NA NA NA

550 22 559 478 662 554 767 NA NA NA NA

600 24 610 554 837 635 959 NA NA NA NA

Where

DN = Nominal diameter NPD = Nominal Pipe Size OD = Outside Diameter t = Wall Thickness m = Specific WeightPIPI

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PIPING Pipes data

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The following Specific Pressure Drops (Y) are normally used in the good engineering practice(where Y=ΔPL ΔP Pressur Drop and L Pipe Lenght)

For pipe sizing the Velocity (V) is also usedIn the following table are shown the typical liquid velocities in steel pipes

Some fixed pressure drop values indicationsfor gate valves (fully open) consider a pressure drop of 5 metersbullfor normal bends consider a pressure drop of 5 metersbullfor a check valve consider a pressure drop of 15 metersbull

In the succeeding tables we show the velocity and specific pressure drop for several flow rates and pipe diameters

Not boiling waterY = 02divide05 bar100 m for pump discharge (07 bar100 m max if P gt 50 bar)

Y lt 0110 bar100 m for pump suction

Boiling water Y = 004divide005 bar100 m for pump suction (velocity = 03divide09 ms)

LIQUID LINE TYPE

Specific Pressure Dropsvs Velocity [ms]

0 lt V lt 2 3 lt V lt 10 10 lt V lt 20

NOT BOILING WATER

Pump suctionPump discharge (long)Discharge leads (short)Boiler feedDrainsSloped sewer

03 divide 0606 divide 0912 divide 2712 divide 2709 divide 12

-

06 divide 1209 divide 1515 divide 3715 divide 3709 divide 1509 divide 15

09 divide 1812 divide 2124 divide 4224 divide 42

-12 divide 21

HYDROCARBON LIQUIDS(normal viscosity)

Pump suctionDischarge heather (long)Discharge leads (short)Drains

05 divide 0808 divide 1112 divide 2709 divide 12

06 divide 1209 divide 1515 divide 3709 divide 15

09 divide 1812 divide 2124 divide 46

-

MEDIUM VISCOSITY OILPump suctionDischarge (short)Drains

--

03

05 divide 0901 divide 0209 divide 15

08 divide 1501 divide 0312 divide 18

OTHER WATERCooling tower Chilled waterSea water and generally foulingwater (long pipes) ()

06 divide 09 09 divide 15 12 divide 21

Note () In this case Cameron method has to be used with C=1 Y = 005 divide 012 bar100 m for principal manifold Y = 012 divide 023 bar100 m for secondary manifold

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PIPING Economic pipe sizes

76 wwwpnr-nozzlescom CTG SH 07 EU

18rdquo 14rdquo

1 0350 0370 0200 0090 38rdquo 12rdquo

2 0705 1340 0395 0331 0223 0082 0145 0029 34rdquo

3 1060 2890 0593 0673 0333 0176 0217 0061 0125 0016 1rdquo

4 1410 4940 0788 1150 0444 0291 0290 0101 0167 0027 0110 0010

5 1760 7460 0985 1750 0556 0424 0362 0149 0209 0040 0137 0014

6 1180 2460 0667 0594 0434 0207 0251 0054 0165 0019 114rdquo

8 1580 4060 0892 1020 0579 0351 0335 0091 0219 0033 0126 0009 112rdquo

10 1110 1530 0724 0534 0418 0136 0274 0049 0158 0012 0116 0006

15 1670 3250 1090 1130 0627 0284 0411 0099 0236 0026 0174 0012

20 2rdquo 2230 5600 1450 1900 0836 0481 0549 0168 0315 0043 0233 0021

30 0212 0013 212rdquo 2170 4130 1250 1020 0823 0353 0473 0092 0348 0043

40 0283 0022 0190 0007 2900 7180 1670 1760 1100 0606 0631 0155 0465 0073

50 0354 0032 0237 0012 2090 2700 1370 0911 0789 0233 0581 0108

60 0424 0044 0284 0017 2510 3810 1650 1290 0943 0321 0697 0150

70 0495 0079 0332 0022 3rdquo 2930 5120 1920 1720 111 0434 0814 0199

80 0566 0074 0379 0028 0248 0010 312rdquo 2190 2210 126 0554 0925 0253

90 0636 0093 0427 0035 0279 0013 0209 0006 2470 2770 142 0692 1040 0319

100 0707 0114 0474 0043 0310 0015 0232 0007 4rdquo 2740 3400 158 0843 1160 0392

150 1060 0238 0711 0090 0464 0031 0349 0016 0272 0008 4110 7440 236 181 1740 0828

200 1410 0414 0948 0153 0619 0053 0466 0027 0362 0014 315 314 2330 1450

250 1760 0625 1190 0233 0774 0080 0581 0040 0453 0021 5rdquo 2900 2200

300 2120 0889 1420 0324 0930 0112 0698 0055 0543 0030 0352 0011 3480 3070

350 2470 1190 1660 0438 1080 0150 0815 0074 0634 0040 0411 0014 6rdquo 4070 4160

400 2830 1550 1900 0563 1240 0195 0935 0096 0724 0051 0469 0018 0341 0007 4650 5380

450 3180 1930 2130 0707 1390 0242 1050 0120 0815 0063 0528 0022 0366 0009 5230 6790

500 3540 2380 2370 0867 1550 0298 1170 0147 0902 0076 0587 0027 0407 0011

550 3880 2870 2610 1040 1700 0354 1280 0174 0991 0092 0645 0032 0447 0013

600 4240 3390 2840 1220 1860 0418 1400 0204 1090 0110 0704 0037 0488 0015

650 4590 5560 3080 1420 2010 0486 1510 0239 1180 0127 0762 0043 0529 0017

700 4950 4550 3320 1650 2170 0560 1630 0275 1270 0146 0821 0050 0569 0020

750 5300 5200 3560 1880 2320 0637 1750 0314 1360 0164 0879 0057 0610 0023

800 3790 2130 2480 0721 1860 0354 1450 0185 0936 0064 0651 0025 8rdquo

850 4030 2390 2630 0805 1980 0395 1540 0209 1000 0072 0692 0028 0403 0007

900 2790 0901 2090 0438 1630 0232 1050 0008 0732 0032 0427 0008

950 2940 1000 2210 0486 1720 0258 1120 0087 0773 0036 0451 0010

1000 3100 1110 2320 0534 1810 0284 1170 0096 0814 0039 0474 0011

1100 3410 1290 2560 0643 1990 0341 1290 0116 0895 0047 0522 0012

1200 3720 1 580 2800 0763 2170 0403 1410 0135 0974 0055 0569 0015

1300 3030 0890 2360 0473 1530 0157 1060 0063 0616 0017

1400 3260 1020 2540 0544 1640 0183 1140 0072 0664 0019

1500 3490 1170 2720 0617 176 0208 1220 0083 0712 0022

1600 3720 1330 2890 0697 1880 0234 1300 0093 0758 0025

1700 10rdquo 3950 1490 3080 0784 1990 0260 1380 0104 0806 0028

1800 0546 0010 3260 0875 2110 0290 1470 0116 0854 0032

1900 0575 0012 3440 0965 2230 0323 1550 0129 0901 0034

2000 0606 0012 3617 1060 2340 0356 1630 0143 0946 0037

2200 0667 0015 3980 1280 2580 0429 1790 0172 1050 0045

2400 0727 0017 12rdquo 2820 0507 1950 0200 1140 0053

2600 0788 0021 0563 0009 3050 0589 2110 0234 1230 0061

2800 0848 0023 0606 0010 14rdquo 3280 0676 2280 0268 1330 0070

3000 0909 0026 0649 0011 0532 0007 3520 0773 2440 0306 1420 0080

3500 1060 0035 0760 0015 0620 0009 4110 105 2850 0416 1660 0108

4000 1210 0045 0866 0020 0709 0012 16rdquo 4690 135 3250 0532 1900 0139

4500 1360 0056 0976 0025 0798 0015 0606 0007 3660 0674 2130 0173

5000 1520 0069 1080 0029 0886 0018 0674 0009 4070 0822 2370 0212

6000 1810 0097 1290 0042 1070 0026 0808 0013 18rdquo 4880 1160 2850 0301

7000 2120 0130 1510 0055 1240 0035 0940 0017 0741 0010 5690 1580 3310 0403

8000 2420 0168 1730 0072 1420 0045 1080 0022 0847 0012 6510 2050 3790 0525

9000 2730 0210 1950 0091 1600 0056 1210 0027 0954 0015 4270 0659

10000 3030 0257 2170 0111 1770 0067 1350 0033 1050 0019 4740 0801

Legend Q Water Flow Rate (Lpm) V Velocity (ms) Y Specific Pressure Drops (bar100m)Water at ambient temperature in straight pipe

SPECIfIC PRESSURE DROPS fOR WATER fLOW IN CLEAN STEEL PIPE SCH 10S

Q V Y V Y V Y V Y V Y V Y V Y V Y [lm] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m]

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SPECIfIC PRESSURE DROPS fOR WATER fLOW IN CLEAN STEEL PIPE SCH 40S

Legend Q Water Flow Rate (Lpm) V Velocity (ms) Y Specific Pressure Drops (bar100m)Water at ambient temperature in straight pipe

18rdquo 14rdquo

1 0458 0726 0251 0170 38rdquo 12rdquo

2 0918 2590 0501 0600 0272 0136 0170 0044 34rdquo

3 1380 5590 0752 1220 0407 029 0255 0091 0144 0023 1rdquo

4 1840 9570 1000 2090 0543 048 0340 0151 0192 0038 0120 0012

5 2290 14450 1250 3180 0679 070 0425 0223 0241 0057 0150 0017

6 1500 4460 0815 0980 0510 0309 0289 0077 0180 0024 114rdquo

8 2010 7360 1090 1690 0680 0524 0385 0129 0240 0041 0138 0011 112rdquo

10 1360 2520 0850 0798 0481 0193 0300 0061 0172 0015 0127 0008

15 2040 5370 1280 1690 0722 0403 0450 0124 0258 0032 019 0015

20 2rdquo 2720 9240 1700 2840 0962 0683 0600 0210 0344 0054 0254 0026

30 0231 0016 212rdquo 2550 6170 1440 1450 0900 0442 0517 0114 038 0053

40 0308 0027 0216 0010 3400 10720 1920 2500 1200 0758 0689 0193 0507 0091

50 0385 0039 0270 0017 2410 3830 1500 1140 0861 029 0634 0135

60 0462 0055 0324 0023 2890 5410 1800 1610 103 0400 0761 0187

70 0539 0098 0378 0031 3rdquo 3370 7270 2100 2150 1210 0541 0888 0248

80 0616 0092 0432 0039 028 0014 312rdquo 2400 2760 1380 0690 1010 0315

90 0693 0115 0486 0048 0315 0017 0235 0008 2700 3470 1550 0862 1140 0397

100 0770 0141 0540 0059 035 002 0261 0010 4rdquo 3000 4250 1720 1050 1270 0488

150 1150 0295 0810 0125 0524 0042 0392 0021 0304 0011 4500 9300 2580 2260 1900 1030

200 1540 0512 1080 0212 0699 0072 0523 0036 0405 0019 3440 3910 2540 1810

250 1920 0773 1350 0322 0874 0108 0653 0053 0507 0028 5rdquo 3170 2740

300 2310 1100 1620 0449 105 0152 0784 0074 0608 004 0387 0014 3800 3820

350 2690 1470 1890 0606 122 0203 0915 0099 0710 0053 0452 0018 6rdquo 4440 5180

400 3080 1920 2160 0780 14 0264 1050 0128 0811 0068 0516 0023 0375 0009 5070 6690

450 3460 2390 2430 0979 157 0328 1180 0161 0912 0084 0581 0028 0402 0012 5710 8450

500 3850 2950 2700 1200 175 0403 1310 0196 1010 0101 0646 0034 0447 0014

550 4230 3550 2970 1440 192 0479 1440 0232 1110 0122 0710 0041 0491 0016

600 4620 4200 3240 1690 2100 0566 1570 0273 1220 0146 0775 0047 0536 0019

650 5000 6880 3510 1970 2270 0658 1700 0319 1320 0169 0839 0055 0581 0022

700 5390 5630 3780 2280 2450 0759 1830 0368 1420 0194 0904 0063 0625 0025

750 577 6440 4050 2600 2620 0863 1960 042 1520 0218 0968 0072 067 0029

800 4320 2950 2800 0977 2090 0473 1620 0246 1030 0081 0715 0032 8rdquo

850 4590 3310 2970 1090 2220 0528 1720 0277 1100 0091 076 0036 0439 0009

900 3150 1220 2350 0585 1820 0308 1160 0100 0804 0041 0465 001

950 3320 1350 248 0649 1930 0342 1230 0111 0849 0045 0491 0012

1000 3500 1500 261 0714 2030 0377 1290 0122 0894 0049 0516 0013

1100 3850 1750 2870 0860 2230 0452 1420 0147 0983 0059 0568 0015

1200 4200 2140 3140 1020 2430 0534 1550 0172 1070 0069 0620 0018

1300 3400 1190 2640 0627 1680 0200 1160 008 0671 0021

1400 3660 1370 2840 0722 1810 0232 1250 0091 0723 0024

1500 3920 1560 3040 0818 1940 0264 1340 0105 0775 0027

1600 4180 1780 3240 0924 2070 0297 1430 0118 0826 0031

1700 10rdquo 4440 1990 3450 1040 2190 0331 1520 0132 0878 0035

1800 0590 0012 3650 1160 2320 0369 1610 0147 0930 0039

1900 0622 0014 3850 1280 2450 041 1700 0163 0981 0042

2000 0655 0015 40500 1410 2580 0452 1790 0181 1030 0046

2200 0721 0018 4460 1700 2840 0545 1970 0217 1140 0056

2400 0786 0021 12rdquo 3100 0645 2140 0253 1240 0065

2600 0852 0025 0600 001 3360 0749 2320 0296 1340 0076

2800 0917 0028 0646 0012 14rdquo 3610 0859 2500 0339 1450 0087

3000 0983 0032 0692 0013 0573 0008 3870 0982 268 0387 1550 0099

3500 1150 0043 0810 0018 0668 0011 4520 1330 3130 0526 1810 0134

4000 1310 0055 0923 0023 0764 0014 16rdquo 5160 1720 3570 0673 2070 0172

4500 1470 0068 1040 0029 0860 0018 0658 0009 4020 0853 2320 0214

5000 1640 0084 1150 0034 0955 0022 0731 0011 4470 1040 2580 0262

6000 1960 0118 1380 0049 1150 0031 0877 0016 18rdquo 5360 1470 3100 0373

7000 2290 0158 1610 0065 1340 0042 1020 0021 0808 0012 6250 2000 3610 0499

8000 2620 0204 1840 0085 1530 0054 1170 0027 0924 0015 7150 2590 4130 065

9000 2950 0256 2080 0107 1720 0067 1310 0033 1040 0019 4650 0816

10000 3280 0313 2310 0130 1910 0081 1460 0041 1150 0023 5160 0992

Q V Y V P V Y V Y V Y V Y V Y V Y [lm] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m]

PIPI

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78 wwwpnr-nozzlescom CTG SH 07 EU

10 75 12 038 4 11 50

15 80 12 044 4 11 55

20 90 14 065 4 11 65

25 100 14 082 4 11 75

32 120 14 117 4 14 90

40 130 14 139 4 14 100

50 140 14 162 4 14 110

65 160 14 214 4 14 130

80 190 16 343 4 18 150

100 210 16 422 4 18 170

125 240 18 611 8 18 200

150 265 18 751 8 18 225

175 295 20 1020 8 18 255

200 320 20 1230 8 18 280

250 375 22 1850 12 18 335

300 440 22 2550 12 22 395

350 490 22 3180 12 22 445

400 540 22 3850 16 22 495

450 595 22 4700 16 22 550

500 645 24 6040 20 22 600

PN 6 (UNI 6091)

ND 6 (DIN 2527) DN Flange Holes

D t W N Oslash a

90 14 063 4 14 60

95 14 071 4 14 65

105 16 101 4 14 75

115 16 122 4 14 85

140 16 180 4 18 100

150 16 209 4 18 110

165 18 287 4 18 125

185 18 365 4 18 145

200 20 461 8 18 160

220 20 565 8 18 180

250 22 812 8 18 210

285 22 1050 8 22 240

315 24 1410 8 22 270

340 24 1620 12 22 295

405 28 2510 12 25 355

460 28 3520 12 25 410

520 30 4820 16 25 470

580 32 6350 16 30 525

640 32 7720 20 30 585

715 34 1020 20 33 650

PN 16 (UNI 6093)

ND 16 (DIN 2527) Dimensions Holes

D t W N Oslash a

ND 10 (DIN 2527) Dimensions Holes

D t W N Oslash a

90 14 063 4 14 60

95 14 071 4 14 65

105 16 101 4 14 75

115 16 122 4 14 85

140 16 180 4 18 100

150 16 209 4 18 110

165 18 287 4 18 125

185 18 365 4 18 145

200 20 461 4 18 160

220 20 565 8 18 180

250 22 812 8 18 210

285 22 1050 8 22 240

315 24 1410 8 22 270

340 24 1650 8 22 295

395 26 2410 12 22 350

445 26 3080 12 22 400

505 26 3960 16 22 460

565 26 4960 16 25 515

615 26 5860 20 25 565

670 28 7530 20 25 620

PN 10 (UNI 6092)

LegendaDN Nominal DiameterD Flange External Diametert Flange ThicknessW Flange WeightN Hole NumberOslash Hole Diametera Hole axis

PIPING Flange dimensionsPI

PIN

G

Blind flanges to DIN 2527

79wwwpnr-nozzlescomCTG SH 07 EU

LegendDN Nominal DiameterD Flange External Diametert Flange ThicknessW Flange WeightN Hole NumberOslash Hole Diametera Hole axis

12rsquorsquo 889 111 08 4 159 603

34rsquorsquo 984 127 09 6 159 698

1rsquorsquo 1079 143 10 4 159 794

114rsquorsquo 1175 159 13 4 159 889

112rsquorsquo 1270 175 14 4 159 984

2rsquorsquo 1524 190 18 4 190 1206

212rsquorsquo 1778 222 32 4 190 1397

3rsquorsquo 1905 238 41 4 190 1524

312rsquorsquo 2159 238 59 8 190 1778

4rsquorsquo 2286 238 77 8 190 1905

5rsquorsquo 2540 238 91 8 222 2159

6rsquorsquo 2794 254 118 8 222 2413

8rsquorsquo 3429 286 204 8 222 2984

10rsquorsquo 4064 302 318 12 254 3619

12rsquorsquo 4826 317 500 12 254 4318

14rsquorsquo 5334 349 600 12 286 4762

16rsquorsquo 5969 365 770 16 286 5397

18rsquorsquo 6350 397 950 16 317 5778

20rsquorsquo 6985 429 1230 20 317 6350

22rsquorsquo 7493 460 1510 20 349 6921

ANSI 150 lb DN Flange Holes

D t W N Oslash a

952 143 10 4 159 667

1175 159 14 4 190 825

1238 175 18 4 190 889

1333 206 27 4 190 984

1556 222 36 4 222 1143

1651 254 45 8 190 1270

190S 286 68 8 222 1492

209S 317 91 8 222 1683

2286 349 132 8 254 1841

2540 349 150 8 254 2000

2794 381 200 8 254 2349

3175 413 277 12 254 2699

3810 476 450 12 286 3302

4445 540 700 16 317 3873

5207 571 103 16 349 4508

5842 603 141 20 349 5143

6477 635 181 20 381 5715

7112 667 228 24 381 6286

7747 698 282 24 413 6858

8382 730 311 24 444 7429

ANSI 400 lb Dimensions Holes

D t W N Oslash a

ANSI 300 lb Dimensions Holes

D t W N Oslash a

952 143 10 4 159 667

1175 159 14 4 190 825

1238 175 18 4 190 889

1333 190 27 4 190 984

1556 206 32 4 220 1143

1651 222 36 8 190 1270

1905 254 54 8 222 1492

2095 286 73 8 222 1683

2286 302 95 8 222 1841

2540 317 122 8 222 2000

2794 349 159 8 222 2349

3175 365 227 12 222 2699

3810 413 370 12 254 3302

4445 476 580 16 286 3873

5207 508 840 16 317 4508

5842 540 1070 20 317 5143

6477 571 1390 20 349 5715

7112 603 3900 24 349 6286

7747 635 2230 24 349 6858

8382 667 2700 24 413 7429

PIPING Flange dimensions

PIPI

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flanges to ANSI norms

80 wwwpnr-nozzlescom CTG SH 07 EU

PIPI

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Sieves are used both for determining the particle size distribution of a granular material and to filter solid particles in a liquid Normally the sieve is made with a fabric whose characteristic dimensions areL is the Opening Width (free passage)D is the Diameter of the wireP is the Pitch of the wireS is the Thickness of the fabricTo classify particle sizes there is some Sieve Series according to specific standardsthe most known are Tyler Sieve Series US Sieve Series UK Sieve SerieshellipThe Tyler mesh size indicates exactly the number of openings per linear inch of mesh

L[microm]

TYLER Sieve[Mesh No]

ASTM E11 Sieve[Mesh No]

BS 410 Sieve[Mesh No]

DIN 4188 Sieve[mm]

5 2500 2500 0005

10 1250 1250 0010

15 800 800 0015

20 625 635 625 0020

22 0022

25 500 500 500 0025

28 0028

32 na 450 440 0032

36 0036

38 400 400 400

40 0040

45 325 325 350 0045

50 0050

53 270 270 300

56 0056

63 250 230 240 0063

71 0071

75 200 200 200

80 0080

90 170 170 170 0090

100 0100

106 150 140 150

112 0112

125 115 120 120 0125

140 0140

150 100 100 100

160 0160

180 80 80 85 0180

200 0200

In the german standard (DIN norm 4188) the Opening Width (L) is given in millimeters

PIPING Sieve size conversion chartPI

PIN

G

81wwwpnr-nozzlescomCTG SH 07 EU

L[microm]

TYLER Sieve[Mesh No]

ASTM E11 Sieve[Mesh No]

BS 410 Sieve[Mesh No]

DIN 4188 Sieve[mm]

212 65 70 72

250 60 60 60 0250

280 0280

300 48 50 52

315 0315

355 42 45 44 0355

400 0400

425 35 40 36

450 0450

500 32 35 30 0500

560 0560

600 28 30 25

630 0630

710 24 25 22 0710

800 0800

850 20 20 18

900 0900

1000 16 18 16 1000

1120 1120

1180 14 16 14

1250 1250

1400 12 14 12 1400

1600 1600

1700 10 12 10

1800 1800

2000 9 10 8 2000

2240 2240

2360 8 8 7

2500 2500

2800 7 7 6 2800

3150 3150

3350 6 6 5

3550 3550

4000 5 5 4 4000

4500 4500

4750 4 4 35

5000 5000

5600 35 35 3

6700 3 0265 in 1

8000 25 516 in na

Applicable standards areISO 565 (1987) ISO 3310 (1999) ASTM E 11-70 (1995)DIN 4188 (1977) BS 410 (1986) AFNOR NFX11-501 (1987)

Legend Q Water Flow Rate V Velocity P Pressure drop Pressure drop in bar per 100 meters of straight pipe (water at ambient temperature)

PIPING Sieve size conversion chart

PIPI

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Besides its main range of nozzles for industrial applications PNR manufactures a wide range of complementary products and systems to optimize the use of spray jets and fluids control in most of the modern industrial processes

PNR PRODUCT RANGE

CTG AC

CTG LS

CTG UG

CTG AZ

Complementary Products andAssembly FittingsA complete line of nipples clamps swivel joints and everything that helps you to assemble align and service your spraying systems quickly and easilyAir blowers mixing eductors filters clean-ing guns and lances hose reels steam heaters pressure tanks quick couplings to help you build up a professional system upgraded to the latest standards

Tank washing systemsA complete range from simple fixed washing heads to the two-axis heads from mushroom nozzles to fluid driven reaction heads up to the motor driven washing heads equipped with a pneu-matic or electric motorAll for the inside cleaning of industrial tanks according to the latest technology accessories included

Spray nozzles for industrial applicationsOne of the world most complete lines of nozzles for numberless industrial appli-cations Nozzles with a wide openings range various types of vanes several spray patterns anti-clog design available in small and big dimensions and made in many food-grade materials like PFTE and Stainless Steel 316L with threaded and flanged connections

Air assisted atomizersUltrasonic classic and automatic atomiz-ers for the finest atomization in any insus-trial process High quality machining and strict quality control ensure your systems top professional resultsProgramming and control panels for an easy assembly of complete humidification systems

CTG SP

CTG PM

CTG SW

CTG LN

Spraydry nozzlesAir assisted or hydraulic high pressure ato-mizers made in high-quality metal alloys or tungsten carbideA complete line of nozzles for the moder-nization of existing facilities at competitive prices To ensure highly accurate results and a long service life these nozzles are manufactured with the finest materials and technologically advanced machines

Paper mill productsA line of products specifically designed for perfect results on paper mill machines including disc nozzles patented for self-cleaning filters flat jet nozzles with orifices in sapphire ruby and ceramic oscillating tubes equipped with a computer driven motor

Steelwork nozzlesA complete line of nozzles for steelwork applications including continuous casting air atomizers and conventional nozzles descaling nozzles for high pressure sys-tems dovetail tips for cylinders cooling and high capacity flanged nozzles for coke quenching

Gas cooling lancesSpillback or air assited lances for gas coo-ling in steelworks cement plants and other industrial applicationsWe can supply spare parts upgrade your plant and even supply a complete PLC driven system to enhance the towers per-formances to the highest efficiency level allowed by today technology

wwwpnr-nozzlescomCTG SH 07 EU

CTG SH 07 EUwwwpnr-nozzlescom

STAM

PATO

IN E

U 09

09

copy B

ellamp

Tany

Our products are distributed through

We are also represented in

PNR AmericaPNR Asia

PNR BalticPNR Benelux

PNR ChinaPNR Czech Republic

PNR DeutschlandPNR France

PNR ItaliaPNR Mexico

PNR UK

ArgentinaAustraliaAustriaBrazil

BulgariaCanada

ChileCroatia

DenmarkFinlandGreece

IndiaIndonesia

IranIrelandKorea

MalaysiaNorway

New ZealandPakistan

PhilippinesPoland

Portugal

RumeniaRussiaSerbia

SingaporeSlovenja

SpainSouth Africa

SwedenTaiwanTurkey

Venezuela

Page 16: SPRAY CTG SH 07 EU ENGINEERING HANDBOOK

16 wwwpnr-nozzlescom CTG SH 07 EU

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SLIQUID SPRAY AND SPRAY NOZZLES Droplet spectrum

The atomization of a liquid by means of a compressible fluid like air steam or a gas is defined pneumatic two-phase or twin-fluid atomization Many industrial processes require the availability of finely atomized droplets and the techniques to produce atomized jets have been largely improved in the recent years In addition more sophisticated process techniques have incre-ased the demand for a precise definition about the characteristics of the spray and are now available to the design engineer Since many years PNR can supply upon request complete documentation containing test reports about the more interesting and additional information which are described below for all PNR products

Laser Interpherometer Test (By Pdpa)

PNR droplet size test reports are performed by means of a Laser Interpherometer (Phase Doppler Particle Analyzer) where two laser beams cross in a given point of the spray and define a test probe area Droplet flying through the probe area cause a light scatter which is picked up by the instrument receiver and processed through a computer in order to obtain relevant information about the spray characteristics

Report information

Report information is made of data printed on three pages where the first page contains the most interesting data which make possible to base process calculations upon precise data about spraying degrees process efficiency and jet behavior in operational ambiance These pages contain the Sauter Mean Diameter value whose knowledge is of special importance in heat exchange calculations about evaporative gas cooling processes since it gives the possibility of evaluating the exchange surface obtained by atomizing for a given liquid volume

The upper picture at page 18 referring to atomizing water by means compressed air shows two following histograms

bull Distribution curve of droplet diameter (micron)

bull Distribution curve of droplet velocities (mps)

and the below described values

bull Arithmetic Mean Diameter (D10)

bull Surface Mean Diameter (D20)

bull Volume Mean Diameter (D30)

bull Sauter Mean Diameter (D32)

ARITHMETIC MEAN DIAMETERThis is a diameter value which multiplied by the local num-ber of droplets in the sample equals the addition of alI droplets diameters

SURFACE MEAN DIAMETERThis is the diameter of such a droplet whose surface mul-tiplied by the total droplets number equals the sum of alI droplets surfaces

VOLUME MEAN DIAMETERThis is the diameter of such a droplet whose volume mul-tiplied by the total droplets number equals the sum of all droplets volumes

SAUTER MEAN DIAMETERThis is the diameter of such a droplet whose volumearea ratio equals the ratio between the sum of alI droplet volu-mes divided by the sum of alI droplet surfaces

D10 = Σ i ni di

Σ i ni

D20 = Σ i ni di

2

Σ i ni

D30 = Σ i ni di

3

Σ i ni

D32 = Σ i ni di

3

Σ i di

2

3

17wwwpnr-nozzlescomCTG SH 07 EU

AttemptsDroplet number crossing probe area during test time This includes both validated and not validated droplet

Correct Count Criteria A mathematic correction is applied to validate droplets which cross Probe Area in a peripheral belt or to droplets without a perfect spherical shape so that alI validated droplets parameters are homogeneous (This correction is necessary so that there is direct proportionally between laser beam phase and droplet number diameter)

Number Density It is the number of droplets passing through probe area within test time

Probe areaThis is the area where the two laser beams are crossing so determining the probe area AlI droplets intersecting probe area are checked droplets which respect given parameters for shape are taken as valid droplets and make up the sample whose size and velocity parameters are reported

ValidationsDroplets accepted based on given shape parameters to make up for test sample

Velocity MeanDroplets distribution speed histogram (ms)

Volume Flow RateIt is the volume measured in cubic centimeter per second of the validated droplets making up for the sample

Volume FluxIt is the flow rate per specific area measured in cubic centimeter per second and square centimeter of the validated droplets making up the sample

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LIQUID SPRAY AND SPRAY NOZZLES Droplet spectrum

18 wwwpnr-nozzlescom CTG SH 07 EU

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SLIQUID SPRAY AND SPRAY NOZZLES Droplet spectrum

PNR can supply upon request complete documentation con-taining test reports about the aforementioned parameters and additional information for all PNR atomizersThe diagrams beside show the distribution of droplet diameters and droplet velocities of a spray under test as available to our customers

In the photo beside a test being performed at our laboratoriesWe use a computer driven laser interpherometer to detect and record the spray parameters while fluid capacities and feed pressure values are monitored through high precision instru-ments

IMPORTANT NOTE

The droplet size values measured with a PDPA instrumentation are representative of a well specified volume inside the spray and taking measurements in a different volume they can be considerably differentA correct spray droplet size characterization requires then not only tests being performed in several volumes within the spray but also that those measure volumes are selected with regard to the process the droplets are expected to performAs an example the droplet characterization of a spray should define how many volumes have been tested and which are the coordinates of each single test volume in relation to the nozzle orifice

Most of the times pretending to describe the droplet spectrum of a spray nozzle at a given pressure with only one diagram is therefore not correct

19wwwpnr-nozzlescomCTG SH 07 EU

In order to calculate the discharge flow rate from a given nozzle the Bernoulli law shall be used which says that the energy of a liquid flow remains unchanged over alI the sections of the flow Friction and turbu-lence losses are neglected which is reasonable for our purposes if the cal-culation is performed over two sections not too far away from each other

The Bernoulli law can be written as follows

Therefore if we consider two sections of the same pipe section A and section B we can write that the flow energy remains constant in the form

If we finally consider that the two above sections are taken immediately before and immediately after the nozzle outlet orifice being

ZA = ZB PB = 0 (PA is a differential pressure referred at the atmosphere pressure)

VA cong 0 negligible as compared to VB (for orifice diameter much smaller than the duct diameter)

we shall come to the formula

When we define a new constant k to include the value of the nozzle orifice outlet area (A) then we come to the following equation which says that for a nozzle spraying into a room at ambient pressure the exiting flow is proportional to the feed line pressure

Considering now two different pressure values for the same nozzle since k is a constant quantity we can write that

and derive from the above an equation that makes it possible to calculate the nozzle flow value at any given pressure value once the flow value at another pressure value is known

The energy of a given liquid flow crossing a given pipe section is composed of three parts namely

P Pressure energy of liquid particle per volume unit

1 ρV2 Kinetic energy of liquid particle per volume unit2ρgz Potential Energy of liquid particle per volume unit

Where ρ = density of liquid g = gravitational acceleration

z = height respect to one plane of reference V = liquid velocity

PA = 1 ρVB 2 rArr

2

K = Q rArr

PK =

Q1 = Q2 rArr

P1 P2

Q = A V rArr

Q = A x C x P rArr

1 P + 1 ρV2 + ρgz = E

2

VB = 2 PA rArr ρ

Q1 = P1

Q2 P2

3 V = C P

4 Q = K P

2 PA + 1 ρVA 2 + ρgzA = PB + 1 ρVB

2 + ρgzB 2 2

EXIT VELOCITY DEPENDS UPON PRESSURE

NOZZLE CAPACITY DEPENDS UPON PRESSURE

NOZZLE CAPACITYAT A DIFFERENT PRESSURE

5 Q2 = Q1 P2

P1

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LIQUID SPRAY AND SPRAY NOZZLES Nozzle flow rate

20 wwwpnr-nozzlescom CTG SH 07 EU

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SLIQUID SPRAY AND SPRAY NOZZLES Nozzle flow rate

The Equation (5) has been obtained after having simplified the real problem neglecting several factors like for examplebullInmostofthepracticalapplicationcasestheflowisturbulentandnotlaminarbullFrictionlossestendtostronglyincreasewithliquidvelocitybullDependinguponthetypeofnozzleadifferentpercentageoftheavailableenergyisusedtobreakupthejetandgivethe

desired spray pattern and spray angle

For the above reason equation (5) gives reliable results if used in a limited pressure range around the pressure value where the flow rate is known with this pressure range depending upon the type of nozzleOur experience has shown that one can expect the error in the calculated value to be lower than +- 6 for pressure values ranging from 13 to 3 times the reference value

As an example a nozzle rated for 10 lpm at 3 bars would have according to equation (5) the following flow valuesa 1 bar 577 lpma 9 bar 173 lpmin real conditions it can be expected the flow rate values to beas high as 61 lpm a 1 baras low as 162 lpm a 9 barAbove considerations are to be used as a guideline only because of the many factors influencing real operations which have not been considered here for example liquid temperature viscosity and density

Possible percentage deviation from theoretical flow rate values

Also above mentioned percentage errors have to be understood for nozzles using part of the flow energy to produce wide angle spray patternsLower values can be expected for narrow angle nozzles impact nozzles and straight jet nozzles Laboratory tests and diagrams showing real flow rate values for each nozzles are used in practice when a precise result must be available

Nozzle discharge coefficient

With reference to equation (4) if we consider the pressure value to be equal to 1 (P = 1 bar) the flow rate of the nozzle becomes

K is a parameter widely used in the fire fighting industry

In some instances reference is made to the nozzle discharge coefficient or shortly to the nozzle coefficient to indicate the nozzle flow rate for a unitary pressure Of course for a given pressure value Pn the flow value will be

+ 6

+ 3

- 3

- 6

CAPACITY AT A GIVEN PRESSURE VALUEWHEN K KHOWN

NOZZLE CAPACITYFOR P=1 barQ = K P = K 1 = K

6 Qn = K Pn

21wwwpnr-nozzlescomCTG SH 07 EU

The spray angle is the opening angle which the nozzle jet of droplets forms at the moment when it leaves the nozzle orifice and it is one of the fundamental parameters for the choice of a given nozzleIn fact the amplitude of the spray angle determines in connection with the distance between the nozzle orifice and the target to be covered the spray coverage and the density of liquid sprayed with respect to the cover area See our Catalogue for description of the different nozzle spray patterns The table at the bottom of the page gives the theoretical spray width based on the nozzle spray angle and the distance from the nozzle orifice It is important to note that because of several factors like gravity forces and aerodynamic drag the spray angle value cannot be maintained but in in a limited distance normally up to 300 mm from the orifice For air assisted atomizers it is improper to use the term spray angle since no precise value can be measured Therefore the values given by Catalogues are to be intended as guidelines only

THEORETICAL SPRAY COVERAGE

at various distances from nozzle orifice

Spray 50 100 150 200 250 300 400 500 600 700 800 1000 Angle mm mm mm mm mm mm mm mm mm mm mm mm

15deg 13 26 40 53 66 79 105 132 158 184 211 263 25deg 22 44 67 89 111 133 177 222 266 310 355 443 30deg 27 54 80 107 134 161 214 268 322 375 429 536 35deg 32 63 95 126 158 189 252 315 378 441 505 631 40deg 36 73 109 146 182 218 291 364 437 510 582 728 45deg 41 83 124 166 207 249 331 414 497 580 663 828 50deg 47 93 140 187 233 280 373 466 560 653 746 933 60deg 58 116 173 231 289 346 462 577 693 808 924 1150 65deg 64 127 191 255 319 382 510 637 765 892 1020 1270 70deg 70 140 210 280 350 420 560 700 840 980 1120 1400 75deg 77 154 230 307 384 460 614 767 921 1070 1230 1530 80deg 84 168 252 336 420 504 671 839 1010 1180 1340 1680 90deg 100 200 300 400 500 600 800 1000 1200 1400 1600 2000 95deg 109 218 327 437 546 655 873 1090 1310 1530 1750 2180 100deg 119 238 358 477 596 715 953 1190 1430 1670 1910 2380 110deg 143 286 429 571 714 857 1140 1430 1710 2000 2290 2856 120deg 173 346 520 693 866 1040 1390 1730 2080 2430 2771 3464 130deg 215 429 643 858 1070 1290 1720 2150 2570 3002 3431 4289

WhereASCbull = Actual Spray CoverageTSCbull = Theoretical Spray CoverageASAbull = Actual Spray AngleTSAbull = Theoretical Spray AngleL bull = Spray Distances

TSC = 2 middot L middot ctan ( TSA )2

7

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LIQUID SPRAY AND SPRAY NOZZLES Spray angle

22 wwwpnr-nozzlescom CTG SH 07 EU

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SLIQUID SPRAY AND SPRAY NOZZLES Spray angle

Depending upon the nozzle design variations of feed pressure may have a great influence on the spray angle valueGenerally with increasing pressure turbulence full cone nozzles will produce narrower angles flat jet nozzles will show a wider angle spray while nozzles working on the deflection principle like spiral nozzles and K style flat jet nozzles will be less affected by pressure changesAll nozzles will not function properly with very low pressure values (from 05 bar down depending upon nozzle type ) with a marked decay in performance larger drops not well defined spray pattern lower spray angle values

The above pictures show spray angles for different nozzles and different pressure valuesShould your application strictly require that a given value of the spray angle is obtained under a given pressure value or pressure range of values please obtain a test report from our laboratories

Full cone nozze DDW 2235

Flat jet nozzleJCW 2245

Spiral nozzeECW 2230

Pressure 05 bar Pressure 05 bar Pressure 05 bar

Pressure 3 bar Pressure 3 bar Pressure 3 bar

Pressure 10 bar Pressure 10 bar Pressure 10 bar

Photo obtained with 120000s flashlight

picture 1

picture 4

picture 7

picture 2

picture 5

picture 8

picture 3

picture 6

picture 9

NotePicture 2 shows clearly the droplet generation mechanism as described at page 15

23wwwpnr-nozzlescomCTG SH 07 EU

Terms and definitions

A very important characteristic of a spray nozzle is a parameter called Spray Distribution which gives a precise information about how evenly the drops of the spray are distributed onto the area covered by the sprayIt is self understood that normally it is preferable to obtain the most even distribution possibleIn the past this was done through the visual examination of a diagram reporting the quantity of water contained for example in glass pipes aligned onto the spray coverage areaPnr has determined to obtain such a result in a scientific way through high technology instrumentation as shown in the pictures below showing one of our patternators and a typical distribution diagram

Now to the spray geometry and some definition letrsquos consider a nozzle with a capa-city Q at the pressure PAt every value for distance H which we call height of spray we can define a plane lsquonrsquo normal to the nozzle axis on which a line can define the intersection of the spray onto the planeThe area covered by the spray on the plane lsquonrsquo has a surface S depending from the following parametersa) Spray pattern Fb) Opening angle of the spray αc) Height of the spray H

We can then write S=S( F α H )

In case of a full cone nozzle S is a circle with diameter C and S = 0785 C2

The capacity of the nozzle flows through the surface S but each smaller area inside the surface S will probably have a different value for the flow passing through itWe introduce then the value of Specific Capacity q

1) Specific Capacity

The function q depends upon the single point (xy) in the section S and then

Determining the function q is however very expensive therefore in practice two different functions are used which give in most occurrences sufficient information

2) Linear Distribution

3) Angular distribution

part Qpart x

qx =

Diagram 1

q = limΔS 0

ΔQΔS

q = = f (x y H)part Qpart S

part Qpart φ

qφ =

ΔQ is the liquid flowing through a surface ΔSwhere ΔS is a fraction of the surface S

x and y are the local coordinates in the section planewhere H is the distance of the test surface from the nozzle orifice

partQ is the variation in capacitywhere partx is the variation of a generic linear coordinate

partQ is the variation in capacitywhere partφ is the variation of a generic angular coordinate

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LIQUID SPRAY AND SPRAY NOZZLES Spray Distribution

24 wwwpnr-nozzlescom CTG SH 07 EU

LIQUID SPRAY AND SPRAY NOZZLES Spray Distribution

Values extracted from these functions can characterize the spray and allow for drawing the diagrams defined as Distribution Curves

Analyzing the above curves it is possible to determine the type of water distribution along the spray coverage and the type of spray pattern like for example a full cone hollow cone flat or straight jet spray

Distribution measurement

The water distribution along the spray coverage is determined by means of an instrument called Patternator

A patternator consists of the following parts 1) Liquid collector2) Cell block3) Measure block4) Unloading block

The nozzle is above the instrument and it is orienta-ted in such a way the jet is collected into the upper liquid collectorThe liquid collector can be linear ( diagram 5 ) or round ( diagram 6 ) according to the test being runFrom the single parts in the collector the liquid is sent into the corresponding cells below (2)

The Measure block (3) determines the liquid content in each single cell then the unloading block (4) empties the instrument sending the liquid to the collection drain

There are two types of patternators

Analogic1 the different levels of liquid is visible through the transparent walls of the cells or pipes sometimes containing some kind of floating balls and a picture can be taken with a cameraDigital2 Delivering an automatic reading of the values in the cells the values being supplied as an electronic file from which a distribution curve can be easily obtained

Diagram 2 Linear distribution Diagram 3 Angular distribution

Diagram 4

Diagram 6 Circular collectorDiagram 5 Linear collector

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LIQUID SPRAY AND SPRAY NOZZLES Spray Distribution

Normalizing distribution curve

The values obtained from the cells of the patternator showing the water quantity collected in the single cells allow for preparing a Distribution curve which can be given as a single line curve or as a row of vertical barsThese resemble the liquid level collected into the glass pipes of the old type instrumentation

The curves prepared based on the liquid level in the single cells still are not precise they depend in fact from the testing time the longer this time the larger the liquid quantity sprayedTo eliminate the influence of time from the test it is necessary to transform the effective curves to normalized curves

Normalized4) linear distribution

Normalized5) angular distribution

Please note that Maximum value is the one belonging to the series of values measured in the cellsIn addition to the distribution it is possible to normalize the intervals to with the following formulas

Normalized 6) linear interval

Normalized 7) angular interval

The linear normalized amplitude is defined inside an interval [-1 +1]The angular normalized amplitude is defined inside an interval [0+2π]

Diagram 7 Effective linear distribution curve Diagram 8 Effective angular distribution curve

Mx

xx q

q=δ

N

πθ

2=Δ

Diagram 9 Normalized linear distribution curve Diagram 10 Normalized angular distribution curve

qx is the linear distribution of a generic cellwhere qx

M is the maximum linear distribution measured

qφ is the linear distribution of a generic cellwhere qφ

M is the maximum linear distribution measured

2 is the normalized linear amplitude of the spraywhere N is the number of active cells (active cells = cells containing liquid)

2π is the normalized angular amplitude of the spraywhere N is the number of active cells (active cells = cells containing liquid)

Mq

q

ϕ

ϕϕδ =φ

φ

φ

2

N=Δλ

2

N=Δλ

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Evaluation of spray distribution

To evaluate distribution curves it is necessary to take three properties into consideration

a) UNIFORMITY b) MONOTONY c) SIMMETRY

As described in the following diagrams and definitions

a) UNIFORM A distribution that minimizes the ratio AAdeg

b) MONOTONE Is a distribution with a curve which grows on the left side and decreases on the left side c) SYMMETRIC Is a distribution which minimizes the Ratio A+A-

Based on the above definitions the following curves show the ideal situations

The three properties are then evaluated by means of the following parameters

1 Integral uniformity

2 Incremental uniformity

3 Symmetry index

Complete details about the above formulas and definition can be found in our Technical Bulletin REL 080002 which shall be released from our Technical Department on request

Diagram 12Normalized and monotone distribution

Diagram 11Normalized and monotone distribution

Diagram 14Ideal monotony

Diagram 15Ideal symmetry

Diagram 13Ideal uniformity

1001 sdot=MA

AU

1002

2 sdot=lowastσ

U

1001

sdot⎥⎦

⎤⎢⎣

sdotminus=

lowast

lowast

δ

ε

NI S

sum minus=lowast

M

i iδδε

A is the area included in the normalized curvewhere Adeg is the rest of the area included in the 2x1 rectangle

Left side is the area -1 0where Right side is the area 0 +1

A+ is the area included below the curve on the right sidewhere A- is the area included below the curve on the left side

where

where δrsquo is the value of normalized liquid content in the symmetric cell N number of cells containing liquid in half of the diagram

lowast

lowast sum=

N

N

i i

δ

δ N Number of cells containing liquid

A area included below the curve AM area included below the ideal curvewhere

sum minus= +lowast

1

N

i ii δδσ

N Number of cells containing liquid

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SLIQUID SPRAY AND SPRAY NOZZLES Spray Distribution

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Liquids are characterized for their property of undergoing continuous deformation when subjected to shear stress The property of fluids (liquids or gases) to resist flowing due to the existence of internal friction within the fluid is called visco-sity

Thus if we imagine the different layers of fluid sliding one over the other with friction we can imagine that viscosity is defined the force required to move a unit area of fluid for a unit distance Viscosity is measured with many different systems among which the most used are the following

The following table shows correspondences between the most used viscosity units

The viscosity value of a liquid depends upon the temperature therefore the viscosity value must always be given with reference to a temperature value The viscosity of water (20deg C) is 1 Centipoise and 1 Centistoke since water mass density = 1

KINEMATIC SAYBOLT SAYBOLT ENGLER VISCOSITY UNIVERSAL FUROL

Centistoke Sq feetsec SSU SSF Degrees

100 000001076 310 --- 100

500 000005382 424 --- 137

1000 00001076 588 --- 183

1566 00001686 80 --- 245

2052 00002209 100 --- 302

2515 00002707 120 --- 357

4295 00004623 200 --- 592

1080 0001163 500 523 1460

1510 0001625 700 720 2044

1942 0002090 900 921 2628

3023 0003254 1400 143 4090

3885 0004182 1800 183 5260

5394 0005806 2500 254 7300

10788 001161 5000 509 146

15103 001626 7000 712 204

19419 002092 9000 916 263

32365 003483 15000 1526 438

METHOD UNIT DIMENSIONS NOTES

1 Dynamic viscosity(Absolute viscosity) Poise ML T-1 Poise = 100 Centipoises = (1 dyne per seccm2)

2 Kinematic viscosity Stoke L2 T-1 1 Stoke = 100 Centistoke = (cm2sec)Kinematic viscosity = Dynamic viscositydensity

3 SSUSSF

One of the most widely instruments to determine is the Saybolt viscosimeter which measures the time in seconds required for a fixed volume of a given liquid to flow through an orificeSSU = Seconds Saybolt Universal relates to a smaller orifice for less viscous liquidsSSF = Seconds Saybolt Furol relates to a larger orifice for more viscous liquids

LIQUID SPRAY AND SPRAY NOZZLES Influence of liquid viscosity

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Viscosity influence on nozzle flow rate

AlI nozzle Catalogue data refer to spraying water (water cinematic viscosity is equal to 1 Centistoke)A liquid with viscosity higher than water will require more energy to be pumped and sprayed and will flow with lower velocity at the same pressure and this will cause a reduction in the turbulence of the flow For the above reason nozzles working on the turbulence principle like normal full cone nozzles and whirl hollow cone nozzles will show an increase in capacity while spraying liquids with viscosity higher than water This increase is very consistent for small size nozzles where the small radius of the whirl chamber tends to cause high turbu-lence in the flow and tends to diminish and to disappear for nominal capacity valves (capacity values at 3 bar) larger than 15 liters per minute

The graph below shows for a liquid with a viscosity of about 4 Centistokes typical variations in the nozzle flow rate value for different values of the nozzle whirl chamber diameter As it may be seen these variations can be neglected in most practical applications where nozzles with whirl chamber diameters well over 3 mm are used

For other types of nozzles not working on the turbulence principle the increase on viscosity will simply reduce the liquid exit velocity at the orifice thus causing a decrease in capacity Experience shows that this decrease ranges between 3 and 6 of nominal water capacity that is to say that the variation introduced is in the same order of magnitude as the nozzle flow rate toler-ance

Viscosity influence on nozzle spray angle and spray pattern

With reference to the theory of jet break-up and droplet information it can be easily imagined that spraying a liquid more viscous than water is a difficult task

Al the properties of the spray tend to worsen therefore one can expectA higher value for the minimum operating pressure that is the pressure value which allows for obtaining a well defined 1 spray with the expected spray angle A worse spray distribution since the viscous behavior of the liquid makes it more difficult to pro-duce fine droplets and 2 to distribute them evenly with the desired spray pattern A narrower spray angle It is difficult to give guidelines since results on different nozzles at different pressures and with 3 different liquids are scarcely predictableHowever our experience shows that in many cases the use of impact nozzles can give acceptable results where all other type of nozzle failsA laboratory test or a field test are stili the safest way to obtain sound results

50

45

40

35

30

25

20

15

10

5

0 2 3 4 5 6 7 8 9

Increase Flow rate vs Whirl Chamber Diameter

Incr

ease

Flo

w R

ate

[mm

]

Whirl Chamber Diameter [mm]

LIQUID SPRAY AND SPRAY NOZZLES Influence of liquid viscosityLI

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With reference to the Bernoulli Rule as exposed in page 6 one can say that the pressure energy of the liquid flow at the nozzle inlet is transformed totally (minus some losses due to friction inside the nozzle) into liquid velocity at the nozzle orificeCatalogue figures give nozzle capacities when spraying waterIf the specific gravity or density of the liquid is different from that of water the available pressure energy will produce a different liquid velocity at the nozzle orificesIn other words a given quantity of energy will spray always the same quantity of liquid mass but different volumes (flow rates) according to the liquid specific gravity or density

Therefore a liquid heavier than water will exit the nozzle with a lower velocity at lower flow rate while to the contrary a liquid lighter than water will be sprayed at higher velocity at higher flow rate

The following formula is to be applied

The table below gives the value of a correction factor to obtain the flow rate of a liquid with different specific weight as water

WhereQL Liquid flow rateQW Water flow rateF Correction factor

kgliter Libregallon F

06 50 129

07 58 120

08 67 112

09 75 105

10 83 100

11 92 095

12 100 091

13 109 088

14 117 085

15 125 082

16 134 079

17 142 077

18 150 075

19 159 073

20 167 071

QL = F QW8

LIQUID SPRAY AND SPRAY NOZZLES Influence of liquid specific gravity

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The spraying water impact of a nozzle depends on several factors and more precisely spray distribution pattern and spray angle The first step to calculate the impact value which is usually expressed in Kilograms per square centimeter is to deter-mine Total Theoretical lmpact Value using the following formula

The obtained value has to be multiplied by the Total Theoretical Impact per Square Centimeter Coefficient (E)The final value is the Spraying Liquid Impact expressed in kgpcm2Of course not alI the energy of the fluid vein is transferred to the impact point

A part of this energy sometimes a considerable part goes to obtain a desired spraying angle by having the liquid vein acquire a high rotational speed inside the whirl chamber The highest value of impact is obtained with straight jet nozzle and the value can be calculated multiplying spraying pressure per 19The tables below containing the Total Theoretical Impact sqcm coefficient values for different spray pattern nozzles for a dis-tance of 300 mm

[kgpcm2]

TOTAL THEORETICAL IMPACT PER SQ CM COEFFICIENT AT DISTANCE OF 300 MM (E)

Spray Flat jet nozzle Spray Full cone nozzle Spray Hollow cone nozzle Angle Angle Angle

15deg 0300 15deg 0110 25deg 0180 35deg 0130 30deg 0025 40deg 0120 50deg 0100 50deg 0010 65deg 0070 65deg 0004 60deg80deg 001002 80deg 0050 80deg 0002 100deg 0001

WhereQ is the flow rate at working pressure in lpmP is the pressure value in kgpcm2

[kgpcm2]TTI = 0024 Q P

SLI = E TTI

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Jet impact diagram

A further parameter to characterize the performance of a spray nozzle is the distribution of the jet impact force which could be derived by means of mathematical methods from the values of the spray distribution onto the surface covered by the spray but which can more easily be measured with the help of specifically designed instrumentation

In some applications the jet impact force Is the most important parameter used to realize the required processSteel sheet descaling in a rolling mill is a typical example where the jet impact is required to take away the surface scale and obtain a perfectly even surfaceFor that reason special nozzles have been developed to perform this very task where service life impact value and spray distribution reach the values required for satisfactory resultThese test are performed in a laboratory equipped with a specifically designed instrumentation where the high pressures involved in these process can be reached which can measure the pressure values along a matrix of points distributed in the spray area covered by the nozzle

These values are supplied both in a table of values and as a 3D pressure diagram similar to those shown below

On such applications where producing high impact values in the jet is necessary it is of paramount importance that the liquid flow turbulence is kept to a minimum and therefore it is widely used to insert into the nozzle entrance devices designed to improve the operating conditions by forcing the liquid flow through straight passages with several different shapes by doing so the impact delivered by the spray is increased with the same feed pressure

One typical shape used by Pnr is shown on the right and the two dia-grams below show the impact force diagrams for the same nozzle with and without a flow straightener the reduction of flow turbulence can lead in increase of impact force often higher than 20Further improvements of course are available when the nozzle inside profile is properly designed in order to avoid sharp cross section changes and all surfaces are finished as smoothly as possible

Typical design of a Pnr flow straightener

Impact pressure diagram with flow straightenerImpact pressure diagram without flow straightener

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LIQUID SPRAY AND SPRAY NOZZLES Pressure drop through a nozzle

Pressure drop through a nozzle

Some of our customers have asked us In the past which Is the pressure drop through a nozzle since they consider a nozzle one of the parts in a piping like a valve or an elbow which causes a given pressure drop along the line

The reality is different and can be easily understood when considering the Bernoulli formula [2] as given at page 19 of this manual the formula says that the total energy of a liquid flow is made from the addition of three facors

Potential energy due to elevationbullPressure energybullVelocity energybull

When we apply the formula at the entrance and at the outlet ( the orifice ) of a nozzle and we neglect the influence of turbulence losses in between we can easily see that

The potential energy variation can be neglected because of the limited dimensions of the nozzle since the distance bullbetween the nozzle entrance and the nozzle orifice plays no role-The pressure energy variation is important since the liquid pressure value falls abruptly from the pressure inside the feed bullpipe to the ambient pressureThe velocity energy variation is also consistent since the liquid is ejected from the orifice at high speedbull

In other words the pressure energy of the liquid flowing through the orifice is suddenly transformed in liquid drops velocity which is exactly what a nozzle is designed to do

This is shown from equation [3] at page 19 which allows the exit velocity from the nozzle to be calculated from the pressure inside the pipe ( we actually consider the pressure difference between the inside of the pipe and the ambient pressure in this formula )

In other words all the energy still available at the nozzle is converted into velocity or if you so prefer you have a total pressure fall The system designer shall therefore evaluate all the pressure drop between the pump outlet flange and the nozzle entrance in order to be sure that the nozzle feed pressure is sufficient to assure the desired capacity for the liquid being sprayed

parameters valuesat nozzle outlet

nozzle inlet nozzle oulet or orice

feed pressure

inlet velocity

parameters valuesat the nozzle inlet

(A)potential elevation

energy

(A)velocity ( kinetic ) energy

(A)pressure energy

ambient pressure

exit velocity

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The choice of the right material for a nozzle is sometimes the most important one to do since the nozzle operating life depends upon it There are several factors to influence or shorten the nozzle operating life sometimes more than one at the same time the most important being

Wear from solid particles suspended into the liquid being sprayed1 Chemical corrosion from the liquid being sprayed 2 Chemical corrosion from the ambience outside the nozzle3 Exposure to high temperature 4 Exposure to mechanical shocks5

NOZZLE MATERIALSPnr material codes 34Properties of materials 35Mechanical properties of materials 39Chemical resistance of materials 40

NOZZLE MATERIALS

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PNR has adopted a short code to identify construction materials for nozzles and nozzle partsHere below the most frequenty used materials

MATERIAL STANDARDS

The following standards are mentioned with reference to materials identification

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A1 Free Cutting Steel E1 TEFLONreg (PTFE) L3 NICROFERreg 5923

A2 Carbon Steel E3 DELRINreg (POM) L4 STELLITEreg 6

A8 Zinc Plated Mild Steel E6 PERSPEXreg (PMMA) L5 HASTELLOYreg B2

A9 Nickel Plated Mild Steel E7 VITONreg (FPM) L6 HASTELLOYreg C4

B2 AISI 304 Stainless Steel E8 NBR- Sh 70 Rubber L61 HASTELLOYreg C22

B3 AISI 316 Stainless Steel E81 SANTOPRENEreg Rubber L62 ULTIMETreg

B31 AISI 316L Stainless Steel E82 KLINGERITEreg L7 NICKEL 201

B4 AISI 321 Stainless Steel E83 HYPALONreg L8 HASTELLOYreg C276

B8 AISI 309 Stainless Steel E91 Silicon L9 SANICROreg 28 SS

B81 AISI 310 Stainless Steel F12 Tungsten Carbide (TC) N1 AISI 302 Stainless Steel

C1 AISI 420 St Steel hardened F2 PIREXreg P6 ABS

C4 AISI 317 Stainless Steel F3 Rubin P7 FASIT OIL

C6 SAF 2205 Stainless Steel F4 Zapphire P8 EPDM ShA Rubber

D1 Polyvinylchloride (PVC) F5 Ceramic P9 STIROLUXreg 637

D2 Polypropylene (PP) F6 Silicon Carbide (SC) T1 Brass

D3 Polyamide (PA) G1 Cast Iron T3 Copper

D5 Powder Charged PP H1 Titanium T5 Bronze

D6 Fiberglass Charged PP L1 MONEL 400 T8 Nickel Plated Brass

D7 High Density Polyethylene L2 INCOLOYreg 825 V1 Aluminium

D8 Polyvinylidenefluoride (PVDF) L21 INCONELreg 600 V7 Aluminium ENP

STANDARD ORGANIZATION COUNTRY STANDARD CODE

AFNOR Association Franccedilaise de Normalisation France NF

AISI American Iron and Steel Institute USA AISI

ANSI American National Standards Institute USA ANSI

ASTM American Society for Testing and Materials USA ASTM

BSI British Standards Institution UK BS

DIN Deutsches Institut fuumlr Normung Germany DIN

DSIT Dansk StandardsInformation Technology Denmark DS

ISO International Organization for Standardization International ISO

JIS Japanese Institute for Standard Japan JIS

UNI Ente Nazionale di Unificazione Italy UNI

NOTEThe complete list of the Materials Codes may be requested to our Technical Service mentioning release code TGCE CODMAT

NOZZLE MATERIALS PNR material codes

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B1 AISI 303 STAINLESS STEEL

Chemical composition CR 1750 NI 850 S 025 Coding correspondence

Type Stainless Steel Austenitic AISI 303

Hardening Not possible BS 303 S 21

Annealing 1050 1100deg C in water DIN Wnr 14305

Welding Possible with precautions Euro X10CrNiS1809

Corrosion properties

Good resistance Atmospheric exposure food substances organic chemicalsLow resistance Chlorides reducing acids and over 800deg C

JIS SUS 303

NF Z6CN 18-09

SIS 2346

UNI XWCrNiS 1809

B3 AISI 316 STAINLESS STEEL

Chemical composition C 005 CR 170 NI 120 MO 225 Coding correspondence

Type Stainless Steel Austenitic AISI 316

Hardening Not possible BS 316 S 21

Annealing 1050 1100deg C in water DIN Wnr 14401

Welding Easy using same steel electrodes Euro X6CrNiMo17122

Corrosion properties

Good resistance Atmosphere great number of salts organic acids foodsLow resistance Solutions of reducing acids temperatures over 500deg C

JIS SUS 316

NF Z6CND 17-11

SIS 2347

UNI X5CrNiMo1712

B31 AISI 316L STAINLESS STEEL

Chemical composition C 003 CR 170 NI 130 MO 225 Coding correspondence

Type Stainless Steel Austenitic AISI 316 L

Hardening Not possible BS 316S12

Annealing 1050 1100deg C in water DIN Wnr 14404

Welding Easy using same steel electrodes Euro X3CrNiMo1810

Corrosion properties

Good resistance Atmosphere great number of salts organic acids foods salt waterLow resistance Solutions of reducing acids temperatures over 500deg C

JIS SUS 316L

NF Z2CND17-12

SIS 2348

UNI X2CrNiMo 1712

NOZZLE MATERIALS Properties of materials

36 wwwpnr-nozzlescom CTG SH 07 EU

C1 AISI 420 STAINLESS STEEL

Chemical composition C 020 CR 1300 Coding correspondence

Type Stainless Steel Martensitic AISI 420

Hardening 980deg - 1030deg C in oil BS 420 S 29

Annealing 750deg - 800deg C in air DIN Wnr 14021

Welding Possible with precautions Euro X20Cr13

Corrosion properties Good resistance Drinkable water steamgasoline oil alcohol ammonia

JIS SUS 420 J1

NF Z20C13

SIS 2303

UNI X20Cr13

C2 AISI 416 STAINLESS STEEL

Chemical composition C 012 CR 1250 S 022 Coding correspondence

Type Stainless Steel Martensitic AISI 416

Hardening 950deg - 1100deg C in oil BS 416 S 21

Annealing 750deg - 800deg C DIN Wnr ---

Welding Not possible Euro X120CrS13

Corrosion properties Good resistance Drinkable water steamgasoline oil alcohol ammonia

JIS SUS 416

NF Z12CF13

SIS ---

UNI X12CrS13

D8 POLYVINYLIDENE FLUORIDE (PVDF)

Description HIGH-MOLECULAR WEIGHT THE TOUGHEST OF THE FLUOROCARBON RESINS

Trade names amp SuppliersKYNAR (Atochem North America Inc formerly Penwalt Corporation)

SOLEF (Solvay Polymer Corporation)

Physical andMechanical Properties

Excellent resistance to abrasion and stress fatigue

Extremely pure opaque white resin

Thermal Properties UsefuI in temperatures ranging from -73 149degC (-100 300degF)Heat deflection temperature is (8090deg C at 182 Bars (176 194deg F at 264 psi)

Chemical Compatibility

Excellent chemical resistanceCan be used with wet or dry halogens most strong acids and bases aliphatics aromaticsalcohols and strong oxidizing agentsNot recommended for contact with ketones esters amines and some organic acids(fuming sulfuric acid)

NOZZLE MATERIALS Properties of materialsN

OZZL

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E1 POLYTETRAFLUOROETHYLENE (PTFE)

Description FLUOROPLASTIC THAT HAVE SOME OR ALL OF THEIR HYDROGEN MOLECULESREPLACED BY FLUORINE

Trade names amp Suppliers

TEFLON TFE FEP and PFA (Dupont Polymer Products)

NEOFLON (Daikin)

FLUON (ICI Americas Inc)

SST-2SST-3 (Shamrock Technologies Inc)

Physical andMechanical Properties

Low coefficient

Low adhesiveness

Buona resistenza agli agenti atmosferici

Good weatherabilityLow resistance to creep and wear unless reinforced with glass figravebers which results in superior resistance

Thermal Properties High and low temperature stabilityHeat deflection temperatures range from 4855deg C at 182 bar (118-132deg F at 264 psi)

Chemical CompatibilityChemically inert

Totally insoluble

E3 ACETAL (ACETAL HOMOPOLYMERS AND COPOLYMERS)

Description HIGHLY CRYSTALLINE RESINS BASED ON FORMALDEHYDE POLYMERIZATION TECHNOLOGY

Trade names amp Suppliers

DELRIN (Dupont Polymer Products Corporation)

CELCON (Hoechst Celanese Corporation)

ULTRAFORM (BASF Corporation)

RTP 800 (RTP Corporation)

LUPITAL amp TENAL (Franklin Polymers Inc)

FULTRON 404 (ICI Americas Inc)

Physical andMechanical Properties

High tensile strength rigidity and esilience

High fatigue endurance

Excellent dimensional stability

Low coefficient of friction

Outstanding abrasion and wear resistance

Excellent creep resistance

Thermal Properties Heat deflection temperatures range from 110 -136deg C at 182 bars(230 - 270deg F at 264 psi) higher if glass figravelled

Chemical Compatibility

Remains stable in long-term high temperature water immersionExcellent resistance to chemicals and solvents but prolonged exposure to strong acids not recommendedNote Suitable for close-tolerance high-performance partsAvailable for machined parts or may be injection molded

NOZZLE MATERIALS Properties of materials

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L6 HASTELLOY C4

PHYSICAL AND MECHANICAL PROPERTIES CHEMICAL COMPOSITION CORROSION RESISTANCE

R = 650800 Mpa C = 0015 max

Very good against pitting and tensile-corrosion specially in oxydizing atmosphereResistance in welded joints definitely better than C 276 lower than C22

Rp02 = 250470 Mpa Ni = 65

HRB = 90 Cr = 160

Mo = 155

W = --

Fe = 3 max

Ti = 05

Co = 2 max

APPLICATIONSRecommended for applications with strongly oxidizing atmosphere

L61 HASTELLOY C 22

PHYSICAL AND MECHANICAL PROPERTIES CHEMICAL COMPOSITION CORROSION RESISTANCE

R = 700800 Mpa C = 001 max

Excellent performances with oxydizing atmospheres as well as for pitting and tensile-corrosion conditionsVery good resistance in reducing atmospheres and for welded joints

Rp02 = 360420 Mpa Ni = 56

HRB = 93 Cr = 22

Mo = 13

W = 3

Fe = 3

Ti = --

Co = 25 max

APPLICATIONSChemical industry (gas ducts gas washing and treatment systems phosphoric acid production) Heat exchangers pumps chlorination reactors

L8 HASTELLOY C 276

PHYSICAL AND MECHANICAL PROPERTIES CHEMICAL COMPOSITION CORROSION RESISTANCE

R = 600800 Mpa C = 0015 max

Very good in reducing and oxydizing atmospheresVery good against pitting and tensile-corrosionAcceptable resistance in welded jointsIn cast parts excessive segregation not eliminated by thermal treatment of annealing makes it convenient to use C22 or C4 qualitieswhich assure better corrosion resistance and mechanical properties

Rp02 = 300370 Mpa Ni = 57

HRB = 90 Cr = 145165

Mo = 1517

W = frac345

Fe =

V = 035 max

Co = 25 max

APPLICATIONSChemical industry (air ducts scrubbers fans) Paper industry Thermoelectric plants Steel thermal treatments

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MATERIALTENSILE STRENGHT

CORROSION RESISTANCERp 02 R

20degC 800degC 20degC 800degC

(68degF) (1408degF) (68degC) (1408degC)

AISI 302 280 100 680 200

Good sensitive to corrosionbetween grains for slow heatingand cooling in the 450-900deg Crange temperature

AISI 303 280 100 680 200 Discrete

AISI 304304L 270 90 600 100Good especially for 304L304 sensitive to corrosionbetween grains like AISI 302

AISI 309 250 100 640 220 Good Sensitive to corrosion between grains like AISI 302

AISI 310 310 170 650 270Good (gt 304 - 304L)Sensitive to corrosionbetween grains like AISI 302

AISI 316316L 270 110 560 220 Very high especially for 316L

AISI 321 210 100 540 140 Good

AISI 347 280 120 620 200 Good

AISI 416 620 70 750 90

Good in medium corrosive ambient (atmosphere water gasoline alcohol N1-13 foods)Not in high corrosive

BRASS 110-150 --- 360-410 --- Good especially when nickel plated

BRONZE 100-300 --- 200-600 --- Discrete especially with sea water

CAST IRON le 500 V 100-800 V

NICKEL ALLOYS 100-1000 V 300-1300 VVery high also for high temperature To use in the temperaturerange 800-1200deg C

PLASTICS --- --- 20-200 ---

Good also for erosionGenerally they are attackedwith oxidizers like nitric acidhalogens ect

PTFE --- --- 30-40 ---

Very high except for elementarystate of alkaline metalsand to compounds containingfluorine at high temp

DUPLEX STEEL gtAISI 3 gtAISI 3 gtAISI 3 gtAISI 3 Very high also with high temperatureand also for pitting

TITANIUM alloy 195-850 V 300-900 VVery high in oxidizing ambientVery low in reducing ambient and with compounds containing fluorine

Legend Rp 02 = 02 YIELD STRENGHT [MPa]R = ULTIMATE TENSILE STRENGHT [MPa]V = To verify time by time

NOZZLE MATERIALS Mechanical properties of materials

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PIPI

NG

PIPINGPipes data 74Economic pipe sizes 75Pressure drop in clean steel pipes 76Flange dimensions 78Sieve size conversion chart 80

PIPING

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The following table report the data of pipes according to ANSI B3619 that is one of the most used standards that regulate welded stainless steel pipes

DN NPS OD[mm]

SCHEDULE

5S 10S 40SSTD 80SXS

t m t m t m t m

[mm] [kgm] [mm] [kgm] [mm] [kgm] [mm] [kgm]

6 18 103 NA NA 124 028 173 037 241 048

8 14 137 NA NA 165 050 224 064 302 081

10 38 172 NA NA 165 064 231 086 320 112

15 12 213 165 081 211 101 277 128 373 164

20 34 267 165 103 211 130 287 171 391 223

25 1 334 165 131 277 212 338 254 455 328

32 1frac14 422 165 167 277 273 356 344 485 453

40 1frac12 483 165 192 277 315 368 411 508 549

50 2 603 165 242 277 399 391 551 554 759

65 2frac12 730 211 374 305 534 516 875 701 116

80 3 889 211 458 305 655 549 115 762 155

90 3frac12 1016 211 525 305 752 574 138 808 189

100 4 1143 211 592 305 849 602 163 856 226

125 5 1413 277 960 340 117 655 221 953 314

150 6 1683 277 115 340 140 711 287 1097 432

200 8 2191 277 150 376 202 818 431 1270 656

250 10 2730 340 229 419 282 927 611 1270 827

300 12 3239 396 317 457 365 953 749 1270 988

350 14 3556 396 348 478 419 NA NA NA NA

400 16 4064 419 421 478 480 NA NA NA NA

450 18 457 419 474 478 541 NA NA NA NA

500 20 508 478 602 554 696 NA NA NA NA

550 22 559 478 662 554 767 NA NA NA NA

600 24 610 554 837 635 959 NA NA NA NA

Where

DN = Nominal diameter NPD = Nominal Pipe Size OD = Outside Diameter t = Wall Thickness m = Specific WeightPIPI

NG

PIPING Pipes data

75wwwpnr-nozzlescomCTG SH 07 EU

The following Specific Pressure Drops (Y) are normally used in the good engineering practice(where Y=ΔPL ΔP Pressur Drop and L Pipe Lenght)

For pipe sizing the Velocity (V) is also usedIn the following table are shown the typical liquid velocities in steel pipes

Some fixed pressure drop values indicationsfor gate valves (fully open) consider a pressure drop of 5 metersbullfor normal bends consider a pressure drop of 5 metersbullfor a check valve consider a pressure drop of 15 metersbull

In the succeeding tables we show the velocity and specific pressure drop for several flow rates and pipe diameters

Not boiling waterY = 02divide05 bar100 m for pump discharge (07 bar100 m max if P gt 50 bar)

Y lt 0110 bar100 m for pump suction

Boiling water Y = 004divide005 bar100 m for pump suction (velocity = 03divide09 ms)

LIQUID LINE TYPE

Specific Pressure Dropsvs Velocity [ms]

0 lt V lt 2 3 lt V lt 10 10 lt V lt 20

NOT BOILING WATER

Pump suctionPump discharge (long)Discharge leads (short)Boiler feedDrainsSloped sewer

03 divide 0606 divide 0912 divide 2712 divide 2709 divide 12

-

06 divide 1209 divide 1515 divide 3715 divide 3709 divide 1509 divide 15

09 divide 1812 divide 2124 divide 4224 divide 42

-12 divide 21

HYDROCARBON LIQUIDS(normal viscosity)

Pump suctionDischarge heather (long)Discharge leads (short)Drains

05 divide 0808 divide 1112 divide 2709 divide 12

06 divide 1209 divide 1515 divide 3709 divide 15

09 divide 1812 divide 2124 divide 46

-

MEDIUM VISCOSITY OILPump suctionDischarge (short)Drains

--

03

05 divide 0901 divide 0209 divide 15

08 divide 1501 divide 0312 divide 18

OTHER WATERCooling tower Chilled waterSea water and generally foulingwater (long pipes) ()

06 divide 09 09 divide 15 12 divide 21

Note () In this case Cameron method has to be used with C=1 Y = 005 divide 012 bar100 m for principal manifold Y = 012 divide 023 bar100 m for secondary manifold

PIPI

NG

PIPING Economic pipe sizes

76 wwwpnr-nozzlescom CTG SH 07 EU

18rdquo 14rdquo

1 0350 0370 0200 0090 38rdquo 12rdquo

2 0705 1340 0395 0331 0223 0082 0145 0029 34rdquo

3 1060 2890 0593 0673 0333 0176 0217 0061 0125 0016 1rdquo

4 1410 4940 0788 1150 0444 0291 0290 0101 0167 0027 0110 0010

5 1760 7460 0985 1750 0556 0424 0362 0149 0209 0040 0137 0014

6 1180 2460 0667 0594 0434 0207 0251 0054 0165 0019 114rdquo

8 1580 4060 0892 1020 0579 0351 0335 0091 0219 0033 0126 0009 112rdquo

10 1110 1530 0724 0534 0418 0136 0274 0049 0158 0012 0116 0006

15 1670 3250 1090 1130 0627 0284 0411 0099 0236 0026 0174 0012

20 2rdquo 2230 5600 1450 1900 0836 0481 0549 0168 0315 0043 0233 0021

30 0212 0013 212rdquo 2170 4130 1250 1020 0823 0353 0473 0092 0348 0043

40 0283 0022 0190 0007 2900 7180 1670 1760 1100 0606 0631 0155 0465 0073

50 0354 0032 0237 0012 2090 2700 1370 0911 0789 0233 0581 0108

60 0424 0044 0284 0017 2510 3810 1650 1290 0943 0321 0697 0150

70 0495 0079 0332 0022 3rdquo 2930 5120 1920 1720 111 0434 0814 0199

80 0566 0074 0379 0028 0248 0010 312rdquo 2190 2210 126 0554 0925 0253

90 0636 0093 0427 0035 0279 0013 0209 0006 2470 2770 142 0692 1040 0319

100 0707 0114 0474 0043 0310 0015 0232 0007 4rdquo 2740 3400 158 0843 1160 0392

150 1060 0238 0711 0090 0464 0031 0349 0016 0272 0008 4110 7440 236 181 1740 0828

200 1410 0414 0948 0153 0619 0053 0466 0027 0362 0014 315 314 2330 1450

250 1760 0625 1190 0233 0774 0080 0581 0040 0453 0021 5rdquo 2900 2200

300 2120 0889 1420 0324 0930 0112 0698 0055 0543 0030 0352 0011 3480 3070

350 2470 1190 1660 0438 1080 0150 0815 0074 0634 0040 0411 0014 6rdquo 4070 4160

400 2830 1550 1900 0563 1240 0195 0935 0096 0724 0051 0469 0018 0341 0007 4650 5380

450 3180 1930 2130 0707 1390 0242 1050 0120 0815 0063 0528 0022 0366 0009 5230 6790

500 3540 2380 2370 0867 1550 0298 1170 0147 0902 0076 0587 0027 0407 0011

550 3880 2870 2610 1040 1700 0354 1280 0174 0991 0092 0645 0032 0447 0013

600 4240 3390 2840 1220 1860 0418 1400 0204 1090 0110 0704 0037 0488 0015

650 4590 5560 3080 1420 2010 0486 1510 0239 1180 0127 0762 0043 0529 0017

700 4950 4550 3320 1650 2170 0560 1630 0275 1270 0146 0821 0050 0569 0020

750 5300 5200 3560 1880 2320 0637 1750 0314 1360 0164 0879 0057 0610 0023

800 3790 2130 2480 0721 1860 0354 1450 0185 0936 0064 0651 0025 8rdquo

850 4030 2390 2630 0805 1980 0395 1540 0209 1000 0072 0692 0028 0403 0007

900 2790 0901 2090 0438 1630 0232 1050 0008 0732 0032 0427 0008

950 2940 1000 2210 0486 1720 0258 1120 0087 0773 0036 0451 0010

1000 3100 1110 2320 0534 1810 0284 1170 0096 0814 0039 0474 0011

1100 3410 1290 2560 0643 1990 0341 1290 0116 0895 0047 0522 0012

1200 3720 1 580 2800 0763 2170 0403 1410 0135 0974 0055 0569 0015

1300 3030 0890 2360 0473 1530 0157 1060 0063 0616 0017

1400 3260 1020 2540 0544 1640 0183 1140 0072 0664 0019

1500 3490 1170 2720 0617 176 0208 1220 0083 0712 0022

1600 3720 1330 2890 0697 1880 0234 1300 0093 0758 0025

1700 10rdquo 3950 1490 3080 0784 1990 0260 1380 0104 0806 0028

1800 0546 0010 3260 0875 2110 0290 1470 0116 0854 0032

1900 0575 0012 3440 0965 2230 0323 1550 0129 0901 0034

2000 0606 0012 3617 1060 2340 0356 1630 0143 0946 0037

2200 0667 0015 3980 1280 2580 0429 1790 0172 1050 0045

2400 0727 0017 12rdquo 2820 0507 1950 0200 1140 0053

2600 0788 0021 0563 0009 3050 0589 2110 0234 1230 0061

2800 0848 0023 0606 0010 14rdquo 3280 0676 2280 0268 1330 0070

3000 0909 0026 0649 0011 0532 0007 3520 0773 2440 0306 1420 0080

3500 1060 0035 0760 0015 0620 0009 4110 105 2850 0416 1660 0108

4000 1210 0045 0866 0020 0709 0012 16rdquo 4690 135 3250 0532 1900 0139

4500 1360 0056 0976 0025 0798 0015 0606 0007 3660 0674 2130 0173

5000 1520 0069 1080 0029 0886 0018 0674 0009 4070 0822 2370 0212

6000 1810 0097 1290 0042 1070 0026 0808 0013 18rdquo 4880 1160 2850 0301

7000 2120 0130 1510 0055 1240 0035 0940 0017 0741 0010 5690 1580 3310 0403

8000 2420 0168 1730 0072 1420 0045 1080 0022 0847 0012 6510 2050 3790 0525

9000 2730 0210 1950 0091 1600 0056 1210 0027 0954 0015 4270 0659

10000 3030 0257 2170 0111 1770 0067 1350 0033 1050 0019 4740 0801

Legend Q Water Flow Rate (Lpm) V Velocity (ms) Y Specific Pressure Drops (bar100m)Water at ambient temperature in straight pipe

SPECIfIC PRESSURE DROPS fOR WATER fLOW IN CLEAN STEEL PIPE SCH 10S

Q V Y V Y V Y V Y V Y V Y V Y V Y [lm] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m]

PIPI

NG

77wwwpnr-nozzlescomCTG SH 07 EU

SPECIfIC PRESSURE DROPS fOR WATER fLOW IN CLEAN STEEL PIPE SCH 40S

Legend Q Water Flow Rate (Lpm) V Velocity (ms) Y Specific Pressure Drops (bar100m)Water at ambient temperature in straight pipe

18rdquo 14rdquo

1 0458 0726 0251 0170 38rdquo 12rdquo

2 0918 2590 0501 0600 0272 0136 0170 0044 34rdquo

3 1380 5590 0752 1220 0407 029 0255 0091 0144 0023 1rdquo

4 1840 9570 1000 2090 0543 048 0340 0151 0192 0038 0120 0012

5 2290 14450 1250 3180 0679 070 0425 0223 0241 0057 0150 0017

6 1500 4460 0815 0980 0510 0309 0289 0077 0180 0024 114rdquo

8 2010 7360 1090 1690 0680 0524 0385 0129 0240 0041 0138 0011 112rdquo

10 1360 2520 0850 0798 0481 0193 0300 0061 0172 0015 0127 0008

15 2040 5370 1280 1690 0722 0403 0450 0124 0258 0032 019 0015

20 2rdquo 2720 9240 1700 2840 0962 0683 0600 0210 0344 0054 0254 0026

30 0231 0016 212rdquo 2550 6170 1440 1450 0900 0442 0517 0114 038 0053

40 0308 0027 0216 0010 3400 10720 1920 2500 1200 0758 0689 0193 0507 0091

50 0385 0039 0270 0017 2410 3830 1500 1140 0861 029 0634 0135

60 0462 0055 0324 0023 2890 5410 1800 1610 103 0400 0761 0187

70 0539 0098 0378 0031 3rdquo 3370 7270 2100 2150 1210 0541 0888 0248

80 0616 0092 0432 0039 028 0014 312rdquo 2400 2760 1380 0690 1010 0315

90 0693 0115 0486 0048 0315 0017 0235 0008 2700 3470 1550 0862 1140 0397

100 0770 0141 0540 0059 035 002 0261 0010 4rdquo 3000 4250 1720 1050 1270 0488

150 1150 0295 0810 0125 0524 0042 0392 0021 0304 0011 4500 9300 2580 2260 1900 1030

200 1540 0512 1080 0212 0699 0072 0523 0036 0405 0019 3440 3910 2540 1810

250 1920 0773 1350 0322 0874 0108 0653 0053 0507 0028 5rdquo 3170 2740

300 2310 1100 1620 0449 105 0152 0784 0074 0608 004 0387 0014 3800 3820

350 2690 1470 1890 0606 122 0203 0915 0099 0710 0053 0452 0018 6rdquo 4440 5180

400 3080 1920 2160 0780 14 0264 1050 0128 0811 0068 0516 0023 0375 0009 5070 6690

450 3460 2390 2430 0979 157 0328 1180 0161 0912 0084 0581 0028 0402 0012 5710 8450

500 3850 2950 2700 1200 175 0403 1310 0196 1010 0101 0646 0034 0447 0014

550 4230 3550 2970 1440 192 0479 1440 0232 1110 0122 0710 0041 0491 0016

600 4620 4200 3240 1690 2100 0566 1570 0273 1220 0146 0775 0047 0536 0019

650 5000 6880 3510 1970 2270 0658 1700 0319 1320 0169 0839 0055 0581 0022

700 5390 5630 3780 2280 2450 0759 1830 0368 1420 0194 0904 0063 0625 0025

750 577 6440 4050 2600 2620 0863 1960 042 1520 0218 0968 0072 067 0029

800 4320 2950 2800 0977 2090 0473 1620 0246 1030 0081 0715 0032 8rdquo

850 4590 3310 2970 1090 2220 0528 1720 0277 1100 0091 076 0036 0439 0009

900 3150 1220 2350 0585 1820 0308 1160 0100 0804 0041 0465 001

950 3320 1350 248 0649 1930 0342 1230 0111 0849 0045 0491 0012

1000 3500 1500 261 0714 2030 0377 1290 0122 0894 0049 0516 0013

1100 3850 1750 2870 0860 2230 0452 1420 0147 0983 0059 0568 0015

1200 4200 2140 3140 1020 2430 0534 1550 0172 1070 0069 0620 0018

1300 3400 1190 2640 0627 1680 0200 1160 008 0671 0021

1400 3660 1370 2840 0722 1810 0232 1250 0091 0723 0024

1500 3920 1560 3040 0818 1940 0264 1340 0105 0775 0027

1600 4180 1780 3240 0924 2070 0297 1430 0118 0826 0031

1700 10rdquo 4440 1990 3450 1040 2190 0331 1520 0132 0878 0035

1800 0590 0012 3650 1160 2320 0369 1610 0147 0930 0039

1900 0622 0014 3850 1280 2450 041 1700 0163 0981 0042

2000 0655 0015 40500 1410 2580 0452 1790 0181 1030 0046

2200 0721 0018 4460 1700 2840 0545 1970 0217 1140 0056

2400 0786 0021 12rdquo 3100 0645 2140 0253 1240 0065

2600 0852 0025 0600 001 3360 0749 2320 0296 1340 0076

2800 0917 0028 0646 0012 14rdquo 3610 0859 2500 0339 1450 0087

3000 0983 0032 0692 0013 0573 0008 3870 0982 268 0387 1550 0099

3500 1150 0043 0810 0018 0668 0011 4520 1330 3130 0526 1810 0134

4000 1310 0055 0923 0023 0764 0014 16rdquo 5160 1720 3570 0673 2070 0172

4500 1470 0068 1040 0029 0860 0018 0658 0009 4020 0853 2320 0214

5000 1640 0084 1150 0034 0955 0022 0731 0011 4470 1040 2580 0262

6000 1960 0118 1380 0049 1150 0031 0877 0016 18rdquo 5360 1470 3100 0373

7000 2290 0158 1610 0065 1340 0042 1020 0021 0808 0012 6250 2000 3610 0499

8000 2620 0204 1840 0085 1530 0054 1170 0027 0924 0015 7150 2590 4130 065

9000 2950 0256 2080 0107 1720 0067 1310 0033 1040 0019 4650 0816

10000 3280 0313 2310 0130 1910 0081 1460 0041 1150 0023 5160 0992

Q V Y V P V Y V Y V Y V Y V Y V Y [lm] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m]

PIPI

NG

78 wwwpnr-nozzlescom CTG SH 07 EU

10 75 12 038 4 11 50

15 80 12 044 4 11 55

20 90 14 065 4 11 65

25 100 14 082 4 11 75

32 120 14 117 4 14 90

40 130 14 139 4 14 100

50 140 14 162 4 14 110

65 160 14 214 4 14 130

80 190 16 343 4 18 150

100 210 16 422 4 18 170

125 240 18 611 8 18 200

150 265 18 751 8 18 225

175 295 20 1020 8 18 255

200 320 20 1230 8 18 280

250 375 22 1850 12 18 335

300 440 22 2550 12 22 395

350 490 22 3180 12 22 445

400 540 22 3850 16 22 495

450 595 22 4700 16 22 550

500 645 24 6040 20 22 600

PN 6 (UNI 6091)

ND 6 (DIN 2527) DN Flange Holes

D t W N Oslash a

90 14 063 4 14 60

95 14 071 4 14 65

105 16 101 4 14 75

115 16 122 4 14 85

140 16 180 4 18 100

150 16 209 4 18 110

165 18 287 4 18 125

185 18 365 4 18 145

200 20 461 8 18 160

220 20 565 8 18 180

250 22 812 8 18 210

285 22 1050 8 22 240

315 24 1410 8 22 270

340 24 1620 12 22 295

405 28 2510 12 25 355

460 28 3520 12 25 410

520 30 4820 16 25 470

580 32 6350 16 30 525

640 32 7720 20 30 585

715 34 1020 20 33 650

PN 16 (UNI 6093)

ND 16 (DIN 2527) Dimensions Holes

D t W N Oslash a

ND 10 (DIN 2527) Dimensions Holes

D t W N Oslash a

90 14 063 4 14 60

95 14 071 4 14 65

105 16 101 4 14 75

115 16 122 4 14 85

140 16 180 4 18 100

150 16 209 4 18 110

165 18 287 4 18 125

185 18 365 4 18 145

200 20 461 4 18 160

220 20 565 8 18 180

250 22 812 8 18 210

285 22 1050 8 22 240

315 24 1410 8 22 270

340 24 1650 8 22 295

395 26 2410 12 22 350

445 26 3080 12 22 400

505 26 3960 16 22 460

565 26 4960 16 25 515

615 26 5860 20 25 565

670 28 7530 20 25 620

PN 10 (UNI 6092)

LegendaDN Nominal DiameterD Flange External Diametert Flange ThicknessW Flange WeightN Hole NumberOslash Hole Diametera Hole axis

PIPING Flange dimensionsPI

PIN

G

Blind flanges to DIN 2527

79wwwpnr-nozzlescomCTG SH 07 EU

LegendDN Nominal DiameterD Flange External Diametert Flange ThicknessW Flange WeightN Hole NumberOslash Hole Diametera Hole axis

12rsquorsquo 889 111 08 4 159 603

34rsquorsquo 984 127 09 6 159 698

1rsquorsquo 1079 143 10 4 159 794

114rsquorsquo 1175 159 13 4 159 889

112rsquorsquo 1270 175 14 4 159 984

2rsquorsquo 1524 190 18 4 190 1206

212rsquorsquo 1778 222 32 4 190 1397

3rsquorsquo 1905 238 41 4 190 1524

312rsquorsquo 2159 238 59 8 190 1778

4rsquorsquo 2286 238 77 8 190 1905

5rsquorsquo 2540 238 91 8 222 2159

6rsquorsquo 2794 254 118 8 222 2413

8rsquorsquo 3429 286 204 8 222 2984

10rsquorsquo 4064 302 318 12 254 3619

12rsquorsquo 4826 317 500 12 254 4318

14rsquorsquo 5334 349 600 12 286 4762

16rsquorsquo 5969 365 770 16 286 5397

18rsquorsquo 6350 397 950 16 317 5778

20rsquorsquo 6985 429 1230 20 317 6350

22rsquorsquo 7493 460 1510 20 349 6921

ANSI 150 lb DN Flange Holes

D t W N Oslash a

952 143 10 4 159 667

1175 159 14 4 190 825

1238 175 18 4 190 889

1333 206 27 4 190 984

1556 222 36 4 222 1143

1651 254 45 8 190 1270

190S 286 68 8 222 1492

209S 317 91 8 222 1683

2286 349 132 8 254 1841

2540 349 150 8 254 2000

2794 381 200 8 254 2349

3175 413 277 12 254 2699

3810 476 450 12 286 3302

4445 540 700 16 317 3873

5207 571 103 16 349 4508

5842 603 141 20 349 5143

6477 635 181 20 381 5715

7112 667 228 24 381 6286

7747 698 282 24 413 6858

8382 730 311 24 444 7429

ANSI 400 lb Dimensions Holes

D t W N Oslash a

ANSI 300 lb Dimensions Holes

D t W N Oslash a

952 143 10 4 159 667

1175 159 14 4 190 825

1238 175 18 4 190 889

1333 190 27 4 190 984

1556 206 32 4 220 1143

1651 222 36 8 190 1270

1905 254 54 8 222 1492

2095 286 73 8 222 1683

2286 302 95 8 222 1841

2540 317 122 8 222 2000

2794 349 159 8 222 2349

3175 365 227 12 222 2699

3810 413 370 12 254 3302

4445 476 580 16 286 3873

5207 508 840 16 317 4508

5842 540 1070 20 317 5143

6477 571 1390 20 349 5715

7112 603 3900 24 349 6286

7747 635 2230 24 349 6858

8382 667 2700 24 413 7429

PIPING Flange dimensions

PIPI

NG

flanges to ANSI norms

80 wwwpnr-nozzlescom CTG SH 07 EU

PIPI

NG

Sieves are used both for determining the particle size distribution of a granular material and to filter solid particles in a liquid Normally the sieve is made with a fabric whose characteristic dimensions areL is the Opening Width (free passage)D is the Diameter of the wireP is the Pitch of the wireS is the Thickness of the fabricTo classify particle sizes there is some Sieve Series according to specific standardsthe most known are Tyler Sieve Series US Sieve Series UK Sieve SerieshellipThe Tyler mesh size indicates exactly the number of openings per linear inch of mesh

L[microm]

TYLER Sieve[Mesh No]

ASTM E11 Sieve[Mesh No]

BS 410 Sieve[Mesh No]

DIN 4188 Sieve[mm]

5 2500 2500 0005

10 1250 1250 0010

15 800 800 0015

20 625 635 625 0020

22 0022

25 500 500 500 0025

28 0028

32 na 450 440 0032

36 0036

38 400 400 400

40 0040

45 325 325 350 0045

50 0050

53 270 270 300

56 0056

63 250 230 240 0063

71 0071

75 200 200 200

80 0080

90 170 170 170 0090

100 0100

106 150 140 150

112 0112

125 115 120 120 0125

140 0140

150 100 100 100

160 0160

180 80 80 85 0180

200 0200

In the german standard (DIN norm 4188) the Opening Width (L) is given in millimeters

PIPING Sieve size conversion chartPI

PIN

G

81wwwpnr-nozzlescomCTG SH 07 EU

L[microm]

TYLER Sieve[Mesh No]

ASTM E11 Sieve[Mesh No]

BS 410 Sieve[Mesh No]

DIN 4188 Sieve[mm]

212 65 70 72

250 60 60 60 0250

280 0280

300 48 50 52

315 0315

355 42 45 44 0355

400 0400

425 35 40 36

450 0450

500 32 35 30 0500

560 0560

600 28 30 25

630 0630

710 24 25 22 0710

800 0800

850 20 20 18

900 0900

1000 16 18 16 1000

1120 1120

1180 14 16 14

1250 1250

1400 12 14 12 1400

1600 1600

1700 10 12 10

1800 1800

2000 9 10 8 2000

2240 2240

2360 8 8 7

2500 2500

2800 7 7 6 2800

3150 3150

3350 6 6 5

3550 3550

4000 5 5 4 4000

4500 4500

4750 4 4 35

5000 5000

5600 35 35 3

6700 3 0265 in 1

8000 25 516 in na

Applicable standards areISO 565 (1987) ISO 3310 (1999) ASTM E 11-70 (1995)DIN 4188 (1977) BS 410 (1986) AFNOR NFX11-501 (1987)

Legend Q Water Flow Rate V Velocity P Pressure drop Pressure drop in bar per 100 meters of straight pipe (water at ambient temperature)

PIPING Sieve size conversion chart

PIPI

NG

Besides its main range of nozzles for industrial applications PNR manufactures a wide range of complementary products and systems to optimize the use of spray jets and fluids control in most of the modern industrial processes

PNR PRODUCT RANGE

CTG AC

CTG LS

CTG UG

CTG AZ

Complementary Products andAssembly FittingsA complete line of nipples clamps swivel joints and everything that helps you to assemble align and service your spraying systems quickly and easilyAir blowers mixing eductors filters clean-ing guns and lances hose reels steam heaters pressure tanks quick couplings to help you build up a professional system upgraded to the latest standards

Tank washing systemsA complete range from simple fixed washing heads to the two-axis heads from mushroom nozzles to fluid driven reaction heads up to the motor driven washing heads equipped with a pneu-matic or electric motorAll for the inside cleaning of industrial tanks according to the latest technology accessories included

Spray nozzles for industrial applicationsOne of the world most complete lines of nozzles for numberless industrial appli-cations Nozzles with a wide openings range various types of vanes several spray patterns anti-clog design available in small and big dimensions and made in many food-grade materials like PFTE and Stainless Steel 316L with threaded and flanged connections

Air assisted atomizersUltrasonic classic and automatic atomiz-ers for the finest atomization in any insus-trial process High quality machining and strict quality control ensure your systems top professional resultsProgramming and control panels for an easy assembly of complete humidification systems

CTG SP

CTG PM

CTG SW

CTG LN

Spraydry nozzlesAir assisted or hydraulic high pressure ato-mizers made in high-quality metal alloys or tungsten carbideA complete line of nozzles for the moder-nization of existing facilities at competitive prices To ensure highly accurate results and a long service life these nozzles are manufactured with the finest materials and technologically advanced machines

Paper mill productsA line of products specifically designed for perfect results on paper mill machines including disc nozzles patented for self-cleaning filters flat jet nozzles with orifices in sapphire ruby and ceramic oscillating tubes equipped with a computer driven motor

Steelwork nozzlesA complete line of nozzles for steelwork applications including continuous casting air atomizers and conventional nozzles descaling nozzles for high pressure sys-tems dovetail tips for cylinders cooling and high capacity flanged nozzles for coke quenching

Gas cooling lancesSpillback or air assited lances for gas coo-ling in steelworks cement plants and other industrial applicationsWe can supply spare parts upgrade your plant and even supply a complete PLC driven system to enhance the towers per-formances to the highest efficiency level allowed by today technology

wwwpnr-nozzlescomCTG SH 07 EU

CTG SH 07 EUwwwpnr-nozzlescom

STAM

PATO

IN E

U 09

09

copy B

ellamp

Tany

Our products are distributed through

We are also represented in

PNR AmericaPNR Asia

PNR BalticPNR Benelux

PNR ChinaPNR Czech Republic

PNR DeutschlandPNR France

PNR ItaliaPNR Mexico

PNR UK

ArgentinaAustraliaAustriaBrazil

BulgariaCanada

ChileCroatia

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Page 17: SPRAY CTG SH 07 EU ENGINEERING HANDBOOK

17wwwpnr-nozzlescomCTG SH 07 EU

AttemptsDroplet number crossing probe area during test time This includes both validated and not validated droplet

Correct Count Criteria A mathematic correction is applied to validate droplets which cross Probe Area in a peripheral belt or to droplets without a perfect spherical shape so that alI validated droplets parameters are homogeneous (This correction is necessary so that there is direct proportionally between laser beam phase and droplet number diameter)

Number Density It is the number of droplets passing through probe area within test time

Probe areaThis is the area where the two laser beams are crossing so determining the probe area AlI droplets intersecting probe area are checked droplets which respect given parameters for shape are taken as valid droplets and make up the sample whose size and velocity parameters are reported

ValidationsDroplets accepted based on given shape parameters to make up for test sample

Velocity MeanDroplets distribution speed histogram (ms)

Volume Flow RateIt is the volume measured in cubic centimeter per second of the validated droplets making up for the sample

Volume FluxIt is the flow rate per specific area measured in cubic centimeter per second and square centimeter of the validated droplets making up the sample

LIQU

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LIQUID SPRAY AND SPRAY NOZZLES Droplet spectrum

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SLIQUID SPRAY AND SPRAY NOZZLES Droplet spectrum

PNR can supply upon request complete documentation con-taining test reports about the aforementioned parameters and additional information for all PNR atomizersThe diagrams beside show the distribution of droplet diameters and droplet velocities of a spray under test as available to our customers

In the photo beside a test being performed at our laboratoriesWe use a computer driven laser interpherometer to detect and record the spray parameters while fluid capacities and feed pressure values are monitored through high precision instru-ments

IMPORTANT NOTE

The droplet size values measured with a PDPA instrumentation are representative of a well specified volume inside the spray and taking measurements in a different volume they can be considerably differentA correct spray droplet size characterization requires then not only tests being performed in several volumes within the spray but also that those measure volumes are selected with regard to the process the droplets are expected to performAs an example the droplet characterization of a spray should define how many volumes have been tested and which are the coordinates of each single test volume in relation to the nozzle orifice

Most of the times pretending to describe the droplet spectrum of a spray nozzle at a given pressure with only one diagram is therefore not correct

19wwwpnr-nozzlescomCTG SH 07 EU

In order to calculate the discharge flow rate from a given nozzle the Bernoulli law shall be used which says that the energy of a liquid flow remains unchanged over alI the sections of the flow Friction and turbu-lence losses are neglected which is reasonable for our purposes if the cal-culation is performed over two sections not too far away from each other

The Bernoulli law can be written as follows

Therefore if we consider two sections of the same pipe section A and section B we can write that the flow energy remains constant in the form

If we finally consider that the two above sections are taken immediately before and immediately after the nozzle outlet orifice being

ZA = ZB PB = 0 (PA is a differential pressure referred at the atmosphere pressure)

VA cong 0 negligible as compared to VB (for orifice diameter much smaller than the duct diameter)

we shall come to the formula

When we define a new constant k to include the value of the nozzle orifice outlet area (A) then we come to the following equation which says that for a nozzle spraying into a room at ambient pressure the exiting flow is proportional to the feed line pressure

Considering now two different pressure values for the same nozzle since k is a constant quantity we can write that

and derive from the above an equation that makes it possible to calculate the nozzle flow value at any given pressure value once the flow value at another pressure value is known

The energy of a given liquid flow crossing a given pipe section is composed of three parts namely

P Pressure energy of liquid particle per volume unit

1 ρV2 Kinetic energy of liquid particle per volume unit2ρgz Potential Energy of liquid particle per volume unit

Where ρ = density of liquid g = gravitational acceleration

z = height respect to one plane of reference V = liquid velocity

PA = 1 ρVB 2 rArr

2

K = Q rArr

PK =

Q1 = Q2 rArr

P1 P2

Q = A V rArr

Q = A x C x P rArr

1 P + 1 ρV2 + ρgz = E

2

VB = 2 PA rArr ρ

Q1 = P1

Q2 P2

3 V = C P

4 Q = K P

2 PA + 1 ρVA 2 + ρgzA = PB + 1 ρVB

2 + ρgzB 2 2

EXIT VELOCITY DEPENDS UPON PRESSURE

NOZZLE CAPACITY DEPENDS UPON PRESSURE

NOZZLE CAPACITYAT A DIFFERENT PRESSURE

5 Q2 = Q1 P2

P1

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LIQUID SPRAY AND SPRAY NOZZLES Nozzle flow rate

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SLIQUID SPRAY AND SPRAY NOZZLES Nozzle flow rate

The Equation (5) has been obtained after having simplified the real problem neglecting several factors like for examplebullInmostofthepracticalapplicationcasestheflowisturbulentandnotlaminarbullFrictionlossestendtostronglyincreasewithliquidvelocitybullDependinguponthetypeofnozzleadifferentpercentageoftheavailableenergyisusedtobreakupthejetandgivethe

desired spray pattern and spray angle

For the above reason equation (5) gives reliable results if used in a limited pressure range around the pressure value where the flow rate is known with this pressure range depending upon the type of nozzleOur experience has shown that one can expect the error in the calculated value to be lower than +- 6 for pressure values ranging from 13 to 3 times the reference value

As an example a nozzle rated for 10 lpm at 3 bars would have according to equation (5) the following flow valuesa 1 bar 577 lpma 9 bar 173 lpmin real conditions it can be expected the flow rate values to beas high as 61 lpm a 1 baras low as 162 lpm a 9 barAbove considerations are to be used as a guideline only because of the many factors influencing real operations which have not been considered here for example liquid temperature viscosity and density

Possible percentage deviation from theoretical flow rate values

Also above mentioned percentage errors have to be understood for nozzles using part of the flow energy to produce wide angle spray patternsLower values can be expected for narrow angle nozzles impact nozzles and straight jet nozzles Laboratory tests and diagrams showing real flow rate values for each nozzles are used in practice when a precise result must be available

Nozzle discharge coefficient

With reference to equation (4) if we consider the pressure value to be equal to 1 (P = 1 bar) the flow rate of the nozzle becomes

K is a parameter widely used in the fire fighting industry

In some instances reference is made to the nozzle discharge coefficient or shortly to the nozzle coefficient to indicate the nozzle flow rate for a unitary pressure Of course for a given pressure value Pn the flow value will be

+ 6

+ 3

- 3

- 6

CAPACITY AT A GIVEN PRESSURE VALUEWHEN K KHOWN

NOZZLE CAPACITYFOR P=1 barQ = K P = K 1 = K

6 Qn = K Pn

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The spray angle is the opening angle which the nozzle jet of droplets forms at the moment when it leaves the nozzle orifice and it is one of the fundamental parameters for the choice of a given nozzleIn fact the amplitude of the spray angle determines in connection with the distance between the nozzle orifice and the target to be covered the spray coverage and the density of liquid sprayed with respect to the cover area See our Catalogue for description of the different nozzle spray patterns The table at the bottom of the page gives the theoretical spray width based on the nozzle spray angle and the distance from the nozzle orifice It is important to note that because of several factors like gravity forces and aerodynamic drag the spray angle value cannot be maintained but in in a limited distance normally up to 300 mm from the orifice For air assisted atomizers it is improper to use the term spray angle since no precise value can be measured Therefore the values given by Catalogues are to be intended as guidelines only

THEORETICAL SPRAY COVERAGE

at various distances from nozzle orifice

Spray 50 100 150 200 250 300 400 500 600 700 800 1000 Angle mm mm mm mm mm mm mm mm mm mm mm mm

15deg 13 26 40 53 66 79 105 132 158 184 211 263 25deg 22 44 67 89 111 133 177 222 266 310 355 443 30deg 27 54 80 107 134 161 214 268 322 375 429 536 35deg 32 63 95 126 158 189 252 315 378 441 505 631 40deg 36 73 109 146 182 218 291 364 437 510 582 728 45deg 41 83 124 166 207 249 331 414 497 580 663 828 50deg 47 93 140 187 233 280 373 466 560 653 746 933 60deg 58 116 173 231 289 346 462 577 693 808 924 1150 65deg 64 127 191 255 319 382 510 637 765 892 1020 1270 70deg 70 140 210 280 350 420 560 700 840 980 1120 1400 75deg 77 154 230 307 384 460 614 767 921 1070 1230 1530 80deg 84 168 252 336 420 504 671 839 1010 1180 1340 1680 90deg 100 200 300 400 500 600 800 1000 1200 1400 1600 2000 95deg 109 218 327 437 546 655 873 1090 1310 1530 1750 2180 100deg 119 238 358 477 596 715 953 1190 1430 1670 1910 2380 110deg 143 286 429 571 714 857 1140 1430 1710 2000 2290 2856 120deg 173 346 520 693 866 1040 1390 1730 2080 2430 2771 3464 130deg 215 429 643 858 1070 1290 1720 2150 2570 3002 3431 4289

WhereASCbull = Actual Spray CoverageTSCbull = Theoretical Spray CoverageASAbull = Actual Spray AngleTSAbull = Theoretical Spray AngleL bull = Spray Distances

TSC = 2 middot L middot ctan ( TSA )2

7

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LIQUID SPRAY AND SPRAY NOZZLES Spray angle

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SLIQUID SPRAY AND SPRAY NOZZLES Spray angle

Depending upon the nozzle design variations of feed pressure may have a great influence on the spray angle valueGenerally with increasing pressure turbulence full cone nozzles will produce narrower angles flat jet nozzles will show a wider angle spray while nozzles working on the deflection principle like spiral nozzles and K style flat jet nozzles will be less affected by pressure changesAll nozzles will not function properly with very low pressure values (from 05 bar down depending upon nozzle type ) with a marked decay in performance larger drops not well defined spray pattern lower spray angle values

The above pictures show spray angles for different nozzles and different pressure valuesShould your application strictly require that a given value of the spray angle is obtained under a given pressure value or pressure range of values please obtain a test report from our laboratories

Full cone nozze DDW 2235

Flat jet nozzleJCW 2245

Spiral nozzeECW 2230

Pressure 05 bar Pressure 05 bar Pressure 05 bar

Pressure 3 bar Pressure 3 bar Pressure 3 bar

Pressure 10 bar Pressure 10 bar Pressure 10 bar

Photo obtained with 120000s flashlight

picture 1

picture 4

picture 7

picture 2

picture 5

picture 8

picture 3

picture 6

picture 9

NotePicture 2 shows clearly the droplet generation mechanism as described at page 15

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Terms and definitions

A very important characteristic of a spray nozzle is a parameter called Spray Distribution which gives a precise information about how evenly the drops of the spray are distributed onto the area covered by the sprayIt is self understood that normally it is preferable to obtain the most even distribution possibleIn the past this was done through the visual examination of a diagram reporting the quantity of water contained for example in glass pipes aligned onto the spray coverage areaPnr has determined to obtain such a result in a scientific way through high technology instrumentation as shown in the pictures below showing one of our patternators and a typical distribution diagram

Now to the spray geometry and some definition letrsquos consider a nozzle with a capa-city Q at the pressure PAt every value for distance H which we call height of spray we can define a plane lsquonrsquo normal to the nozzle axis on which a line can define the intersection of the spray onto the planeThe area covered by the spray on the plane lsquonrsquo has a surface S depending from the following parametersa) Spray pattern Fb) Opening angle of the spray αc) Height of the spray H

We can then write S=S( F α H )

In case of a full cone nozzle S is a circle with diameter C and S = 0785 C2

The capacity of the nozzle flows through the surface S but each smaller area inside the surface S will probably have a different value for the flow passing through itWe introduce then the value of Specific Capacity q

1) Specific Capacity

The function q depends upon the single point (xy) in the section S and then

Determining the function q is however very expensive therefore in practice two different functions are used which give in most occurrences sufficient information

2) Linear Distribution

3) Angular distribution

part Qpart x

qx =

Diagram 1

q = limΔS 0

ΔQΔS

q = = f (x y H)part Qpart S

part Qpart φ

qφ =

ΔQ is the liquid flowing through a surface ΔSwhere ΔS is a fraction of the surface S

x and y are the local coordinates in the section planewhere H is the distance of the test surface from the nozzle orifice

partQ is the variation in capacitywhere partx is the variation of a generic linear coordinate

partQ is the variation in capacitywhere partφ is the variation of a generic angular coordinate

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LIQUID SPRAY AND SPRAY NOZZLES Spray Distribution

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LIQUID SPRAY AND SPRAY NOZZLES Spray Distribution

Values extracted from these functions can characterize the spray and allow for drawing the diagrams defined as Distribution Curves

Analyzing the above curves it is possible to determine the type of water distribution along the spray coverage and the type of spray pattern like for example a full cone hollow cone flat or straight jet spray

Distribution measurement

The water distribution along the spray coverage is determined by means of an instrument called Patternator

A patternator consists of the following parts 1) Liquid collector2) Cell block3) Measure block4) Unloading block

The nozzle is above the instrument and it is orienta-ted in such a way the jet is collected into the upper liquid collectorThe liquid collector can be linear ( diagram 5 ) or round ( diagram 6 ) according to the test being runFrom the single parts in the collector the liquid is sent into the corresponding cells below (2)

The Measure block (3) determines the liquid content in each single cell then the unloading block (4) empties the instrument sending the liquid to the collection drain

There are two types of patternators

Analogic1 the different levels of liquid is visible through the transparent walls of the cells or pipes sometimes containing some kind of floating balls and a picture can be taken with a cameraDigital2 Delivering an automatic reading of the values in the cells the values being supplied as an electronic file from which a distribution curve can be easily obtained

Diagram 2 Linear distribution Diagram 3 Angular distribution

Diagram 4

Diagram 6 Circular collectorDiagram 5 Linear collector

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LIQUID SPRAY AND SPRAY NOZZLES Spray Distribution

Normalizing distribution curve

The values obtained from the cells of the patternator showing the water quantity collected in the single cells allow for preparing a Distribution curve which can be given as a single line curve or as a row of vertical barsThese resemble the liquid level collected into the glass pipes of the old type instrumentation

The curves prepared based on the liquid level in the single cells still are not precise they depend in fact from the testing time the longer this time the larger the liquid quantity sprayedTo eliminate the influence of time from the test it is necessary to transform the effective curves to normalized curves

Normalized4) linear distribution

Normalized5) angular distribution

Please note that Maximum value is the one belonging to the series of values measured in the cellsIn addition to the distribution it is possible to normalize the intervals to with the following formulas

Normalized 6) linear interval

Normalized 7) angular interval

The linear normalized amplitude is defined inside an interval [-1 +1]The angular normalized amplitude is defined inside an interval [0+2π]

Diagram 7 Effective linear distribution curve Diagram 8 Effective angular distribution curve

Mx

xx q

q=δ

N

πθ

2=Δ

Diagram 9 Normalized linear distribution curve Diagram 10 Normalized angular distribution curve

qx is the linear distribution of a generic cellwhere qx

M is the maximum linear distribution measured

qφ is the linear distribution of a generic cellwhere qφ

M is the maximum linear distribution measured

2 is the normalized linear amplitude of the spraywhere N is the number of active cells (active cells = cells containing liquid)

2π is the normalized angular amplitude of the spraywhere N is the number of active cells (active cells = cells containing liquid)

Mq

q

ϕ

ϕϕδ =φ

φ

φ

2

N=Δλ

2

N=Δλ

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Evaluation of spray distribution

To evaluate distribution curves it is necessary to take three properties into consideration

a) UNIFORMITY b) MONOTONY c) SIMMETRY

As described in the following diagrams and definitions

a) UNIFORM A distribution that minimizes the ratio AAdeg

b) MONOTONE Is a distribution with a curve which grows on the left side and decreases on the left side c) SYMMETRIC Is a distribution which minimizes the Ratio A+A-

Based on the above definitions the following curves show the ideal situations

The three properties are then evaluated by means of the following parameters

1 Integral uniformity

2 Incremental uniformity

3 Symmetry index

Complete details about the above formulas and definition can be found in our Technical Bulletin REL 080002 which shall be released from our Technical Department on request

Diagram 12Normalized and monotone distribution

Diagram 11Normalized and monotone distribution

Diagram 14Ideal monotony

Diagram 15Ideal symmetry

Diagram 13Ideal uniformity

1001 sdot=MA

AU

1002

2 sdot=lowastσ

U

1001

sdot⎥⎦

⎤⎢⎣

sdotminus=

lowast

lowast

δ

ε

NI S

sum minus=lowast

M

i iδδε

A is the area included in the normalized curvewhere Adeg is the rest of the area included in the 2x1 rectangle

Left side is the area -1 0where Right side is the area 0 +1

A+ is the area included below the curve on the right sidewhere A- is the area included below the curve on the left side

where

where δrsquo is the value of normalized liquid content in the symmetric cell N number of cells containing liquid in half of the diagram

lowast

lowast sum=

N

N

i i

δ

δ N Number of cells containing liquid

A area included below the curve AM area included below the ideal curvewhere

sum minus= +lowast

1

N

i ii δδσ

N Number of cells containing liquid

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SLIQUID SPRAY AND SPRAY NOZZLES Spray Distribution

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Liquids are characterized for their property of undergoing continuous deformation when subjected to shear stress The property of fluids (liquids or gases) to resist flowing due to the existence of internal friction within the fluid is called visco-sity

Thus if we imagine the different layers of fluid sliding one over the other with friction we can imagine that viscosity is defined the force required to move a unit area of fluid for a unit distance Viscosity is measured with many different systems among which the most used are the following

The following table shows correspondences between the most used viscosity units

The viscosity value of a liquid depends upon the temperature therefore the viscosity value must always be given with reference to a temperature value The viscosity of water (20deg C) is 1 Centipoise and 1 Centistoke since water mass density = 1

KINEMATIC SAYBOLT SAYBOLT ENGLER VISCOSITY UNIVERSAL FUROL

Centistoke Sq feetsec SSU SSF Degrees

100 000001076 310 --- 100

500 000005382 424 --- 137

1000 00001076 588 --- 183

1566 00001686 80 --- 245

2052 00002209 100 --- 302

2515 00002707 120 --- 357

4295 00004623 200 --- 592

1080 0001163 500 523 1460

1510 0001625 700 720 2044

1942 0002090 900 921 2628

3023 0003254 1400 143 4090

3885 0004182 1800 183 5260

5394 0005806 2500 254 7300

10788 001161 5000 509 146

15103 001626 7000 712 204

19419 002092 9000 916 263

32365 003483 15000 1526 438

METHOD UNIT DIMENSIONS NOTES

1 Dynamic viscosity(Absolute viscosity) Poise ML T-1 Poise = 100 Centipoises = (1 dyne per seccm2)

2 Kinematic viscosity Stoke L2 T-1 1 Stoke = 100 Centistoke = (cm2sec)Kinematic viscosity = Dynamic viscositydensity

3 SSUSSF

One of the most widely instruments to determine is the Saybolt viscosimeter which measures the time in seconds required for a fixed volume of a given liquid to flow through an orificeSSU = Seconds Saybolt Universal relates to a smaller orifice for less viscous liquidsSSF = Seconds Saybolt Furol relates to a larger orifice for more viscous liquids

LIQUID SPRAY AND SPRAY NOZZLES Influence of liquid viscosity

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Viscosity influence on nozzle flow rate

AlI nozzle Catalogue data refer to spraying water (water cinematic viscosity is equal to 1 Centistoke)A liquid with viscosity higher than water will require more energy to be pumped and sprayed and will flow with lower velocity at the same pressure and this will cause a reduction in the turbulence of the flow For the above reason nozzles working on the turbulence principle like normal full cone nozzles and whirl hollow cone nozzles will show an increase in capacity while spraying liquids with viscosity higher than water This increase is very consistent for small size nozzles where the small radius of the whirl chamber tends to cause high turbu-lence in the flow and tends to diminish and to disappear for nominal capacity valves (capacity values at 3 bar) larger than 15 liters per minute

The graph below shows for a liquid with a viscosity of about 4 Centistokes typical variations in the nozzle flow rate value for different values of the nozzle whirl chamber diameter As it may be seen these variations can be neglected in most practical applications where nozzles with whirl chamber diameters well over 3 mm are used

For other types of nozzles not working on the turbulence principle the increase on viscosity will simply reduce the liquid exit velocity at the orifice thus causing a decrease in capacity Experience shows that this decrease ranges between 3 and 6 of nominal water capacity that is to say that the variation introduced is in the same order of magnitude as the nozzle flow rate toler-ance

Viscosity influence on nozzle spray angle and spray pattern

With reference to the theory of jet break-up and droplet information it can be easily imagined that spraying a liquid more viscous than water is a difficult task

Al the properties of the spray tend to worsen therefore one can expectA higher value for the minimum operating pressure that is the pressure value which allows for obtaining a well defined 1 spray with the expected spray angle A worse spray distribution since the viscous behavior of the liquid makes it more difficult to pro-duce fine droplets and 2 to distribute them evenly with the desired spray pattern A narrower spray angle It is difficult to give guidelines since results on different nozzles at different pressures and with 3 different liquids are scarcely predictableHowever our experience shows that in many cases the use of impact nozzles can give acceptable results where all other type of nozzle failsA laboratory test or a field test are stili the safest way to obtain sound results

50

45

40

35

30

25

20

15

10

5

0 2 3 4 5 6 7 8 9

Increase Flow rate vs Whirl Chamber Diameter

Incr

ease

Flo

w R

ate

[mm

]

Whirl Chamber Diameter [mm]

LIQUID SPRAY AND SPRAY NOZZLES Influence of liquid viscosityLI

QUID

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With reference to the Bernoulli Rule as exposed in page 6 one can say that the pressure energy of the liquid flow at the nozzle inlet is transformed totally (minus some losses due to friction inside the nozzle) into liquid velocity at the nozzle orificeCatalogue figures give nozzle capacities when spraying waterIf the specific gravity or density of the liquid is different from that of water the available pressure energy will produce a different liquid velocity at the nozzle orificesIn other words a given quantity of energy will spray always the same quantity of liquid mass but different volumes (flow rates) according to the liquid specific gravity or density

Therefore a liquid heavier than water will exit the nozzle with a lower velocity at lower flow rate while to the contrary a liquid lighter than water will be sprayed at higher velocity at higher flow rate

The following formula is to be applied

The table below gives the value of a correction factor to obtain the flow rate of a liquid with different specific weight as water

WhereQL Liquid flow rateQW Water flow rateF Correction factor

kgliter Libregallon F

06 50 129

07 58 120

08 67 112

09 75 105

10 83 100

11 92 095

12 100 091

13 109 088

14 117 085

15 125 082

16 134 079

17 142 077

18 150 075

19 159 073

20 167 071

QL = F QW8

LIQUID SPRAY AND SPRAY NOZZLES Influence of liquid specific gravity

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The spraying water impact of a nozzle depends on several factors and more precisely spray distribution pattern and spray angle The first step to calculate the impact value which is usually expressed in Kilograms per square centimeter is to deter-mine Total Theoretical lmpact Value using the following formula

The obtained value has to be multiplied by the Total Theoretical Impact per Square Centimeter Coefficient (E)The final value is the Spraying Liquid Impact expressed in kgpcm2Of course not alI the energy of the fluid vein is transferred to the impact point

A part of this energy sometimes a considerable part goes to obtain a desired spraying angle by having the liquid vein acquire a high rotational speed inside the whirl chamber The highest value of impact is obtained with straight jet nozzle and the value can be calculated multiplying spraying pressure per 19The tables below containing the Total Theoretical Impact sqcm coefficient values for different spray pattern nozzles for a dis-tance of 300 mm

[kgpcm2]

TOTAL THEORETICAL IMPACT PER SQ CM COEFFICIENT AT DISTANCE OF 300 MM (E)

Spray Flat jet nozzle Spray Full cone nozzle Spray Hollow cone nozzle Angle Angle Angle

15deg 0300 15deg 0110 25deg 0180 35deg 0130 30deg 0025 40deg 0120 50deg 0100 50deg 0010 65deg 0070 65deg 0004 60deg80deg 001002 80deg 0050 80deg 0002 100deg 0001

WhereQ is the flow rate at working pressure in lpmP is the pressure value in kgpcm2

[kgpcm2]TTI = 0024 Q P

SLI = E TTI

9

10

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SLIQUID SPRAY AND SPRAY NOZZLES Jet impact

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Jet impact diagram

A further parameter to characterize the performance of a spray nozzle is the distribution of the jet impact force which could be derived by means of mathematical methods from the values of the spray distribution onto the surface covered by the spray but which can more easily be measured with the help of specifically designed instrumentation

In some applications the jet impact force Is the most important parameter used to realize the required processSteel sheet descaling in a rolling mill is a typical example where the jet impact is required to take away the surface scale and obtain a perfectly even surfaceFor that reason special nozzles have been developed to perform this very task where service life impact value and spray distribution reach the values required for satisfactory resultThese test are performed in a laboratory equipped with a specifically designed instrumentation where the high pressures involved in these process can be reached which can measure the pressure values along a matrix of points distributed in the spray area covered by the nozzle

These values are supplied both in a table of values and as a 3D pressure diagram similar to those shown below

On such applications where producing high impact values in the jet is necessary it is of paramount importance that the liquid flow turbulence is kept to a minimum and therefore it is widely used to insert into the nozzle entrance devices designed to improve the operating conditions by forcing the liquid flow through straight passages with several different shapes by doing so the impact delivered by the spray is increased with the same feed pressure

One typical shape used by Pnr is shown on the right and the two dia-grams below show the impact force diagrams for the same nozzle with and without a flow straightener the reduction of flow turbulence can lead in increase of impact force often higher than 20Further improvements of course are available when the nozzle inside profile is properly designed in order to avoid sharp cross section changes and all surfaces are finished as smoothly as possible

Typical design of a Pnr flow straightener

Impact pressure diagram with flow straightenerImpact pressure diagram without flow straightener

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LIQUID SPRAY AND SPRAY NOZZLES Jet impact

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LIQUID SPRAY AND SPRAY NOZZLES Pressure drop through a nozzle

Pressure drop through a nozzle

Some of our customers have asked us In the past which Is the pressure drop through a nozzle since they consider a nozzle one of the parts in a piping like a valve or an elbow which causes a given pressure drop along the line

The reality is different and can be easily understood when considering the Bernoulli formula [2] as given at page 19 of this manual the formula says that the total energy of a liquid flow is made from the addition of three facors

Potential energy due to elevationbullPressure energybullVelocity energybull

When we apply the formula at the entrance and at the outlet ( the orifice ) of a nozzle and we neglect the influence of turbulence losses in between we can easily see that

The potential energy variation can be neglected because of the limited dimensions of the nozzle since the distance bullbetween the nozzle entrance and the nozzle orifice plays no role-The pressure energy variation is important since the liquid pressure value falls abruptly from the pressure inside the feed bullpipe to the ambient pressureThe velocity energy variation is also consistent since the liquid is ejected from the orifice at high speedbull

In other words the pressure energy of the liquid flowing through the orifice is suddenly transformed in liquid drops velocity which is exactly what a nozzle is designed to do

This is shown from equation [3] at page 19 which allows the exit velocity from the nozzle to be calculated from the pressure inside the pipe ( we actually consider the pressure difference between the inside of the pipe and the ambient pressure in this formula )

In other words all the energy still available at the nozzle is converted into velocity or if you so prefer you have a total pressure fall The system designer shall therefore evaluate all the pressure drop between the pump outlet flange and the nozzle entrance in order to be sure that the nozzle feed pressure is sufficient to assure the desired capacity for the liquid being sprayed

parameters valuesat nozzle outlet

nozzle inlet nozzle oulet or orice

feed pressure

inlet velocity

parameters valuesat the nozzle inlet

(A)potential elevation

energy

(A)velocity ( kinetic ) energy

(A)pressure energy

ambient pressure

exit velocity

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NOZ

ZLE

MAT

ERIA

LS

The choice of the right material for a nozzle is sometimes the most important one to do since the nozzle operating life depends upon it There are several factors to influence or shorten the nozzle operating life sometimes more than one at the same time the most important being

Wear from solid particles suspended into the liquid being sprayed1 Chemical corrosion from the liquid being sprayed 2 Chemical corrosion from the ambience outside the nozzle3 Exposure to high temperature 4 Exposure to mechanical shocks5

NOZZLE MATERIALSPnr material codes 34Properties of materials 35Mechanical properties of materials 39Chemical resistance of materials 40

NOZZLE MATERIALS

34 wwwpnr-nozzlescom CTG SH 07 EU

PNR has adopted a short code to identify construction materials for nozzles and nozzle partsHere below the most frequenty used materials

MATERIAL STANDARDS

The following standards are mentioned with reference to materials identification

NOZ

ZLE

MAT

ERIA

LS

A1 Free Cutting Steel E1 TEFLONreg (PTFE) L3 NICROFERreg 5923

A2 Carbon Steel E3 DELRINreg (POM) L4 STELLITEreg 6

A8 Zinc Plated Mild Steel E6 PERSPEXreg (PMMA) L5 HASTELLOYreg B2

A9 Nickel Plated Mild Steel E7 VITONreg (FPM) L6 HASTELLOYreg C4

B2 AISI 304 Stainless Steel E8 NBR- Sh 70 Rubber L61 HASTELLOYreg C22

B3 AISI 316 Stainless Steel E81 SANTOPRENEreg Rubber L62 ULTIMETreg

B31 AISI 316L Stainless Steel E82 KLINGERITEreg L7 NICKEL 201

B4 AISI 321 Stainless Steel E83 HYPALONreg L8 HASTELLOYreg C276

B8 AISI 309 Stainless Steel E91 Silicon L9 SANICROreg 28 SS

B81 AISI 310 Stainless Steel F12 Tungsten Carbide (TC) N1 AISI 302 Stainless Steel

C1 AISI 420 St Steel hardened F2 PIREXreg P6 ABS

C4 AISI 317 Stainless Steel F3 Rubin P7 FASIT OIL

C6 SAF 2205 Stainless Steel F4 Zapphire P8 EPDM ShA Rubber

D1 Polyvinylchloride (PVC) F5 Ceramic P9 STIROLUXreg 637

D2 Polypropylene (PP) F6 Silicon Carbide (SC) T1 Brass

D3 Polyamide (PA) G1 Cast Iron T3 Copper

D5 Powder Charged PP H1 Titanium T5 Bronze

D6 Fiberglass Charged PP L1 MONEL 400 T8 Nickel Plated Brass

D7 High Density Polyethylene L2 INCOLOYreg 825 V1 Aluminium

D8 Polyvinylidenefluoride (PVDF) L21 INCONELreg 600 V7 Aluminium ENP

STANDARD ORGANIZATION COUNTRY STANDARD CODE

AFNOR Association Franccedilaise de Normalisation France NF

AISI American Iron and Steel Institute USA AISI

ANSI American National Standards Institute USA ANSI

ASTM American Society for Testing and Materials USA ASTM

BSI British Standards Institution UK BS

DIN Deutsches Institut fuumlr Normung Germany DIN

DSIT Dansk StandardsInformation Technology Denmark DS

ISO International Organization for Standardization International ISO

JIS Japanese Institute for Standard Japan JIS

UNI Ente Nazionale di Unificazione Italy UNI

NOTEThe complete list of the Materials Codes may be requested to our Technical Service mentioning release code TGCE CODMAT

NOZZLE MATERIALS PNR material codes

35wwwpnr-nozzlescomCTG SH 07 EU

NOZ

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B1 AISI 303 STAINLESS STEEL

Chemical composition CR 1750 NI 850 S 025 Coding correspondence

Type Stainless Steel Austenitic AISI 303

Hardening Not possible BS 303 S 21

Annealing 1050 1100deg C in water DIN Wnr 14305

Welding Possible with precautions Euro X10CrNiS1809

Corrosion properties

Good resistance Atmospheric exposure food substances organic chemicalsLow resistance Chlorides reducing acids and over 800deg C

JIS SUS 303

NF Z6CN 18-09

SIS 2346

UNI XWCrNiS 1809

B3 AISI 316 STAINLESS STEEL

Chemical composition C 005 CR 170 NI 120 MO 225 Coding correspondence

Type Stainless Steel Austenitic AISI 316

Hardening Not possible BS 316 S 21

Annealing 1050 1100deg C in water DIN Wnr 14401

Welding Easy using same steel electrodes Euro X6CrNiMo17122

Corrosion properties

Good resistance Atmosphere great number of salts organic acids foodsLow resistance Solutions of reducing acids temperatures over 500deg C

JIS SUS 316

NF Z6CND 17-11

SIS 2347

UNI X5CrNiMo1712

B31 AISI 316L STAINLESS STEEL

Chemical composition C 003 CR 170 NI 130 MO 225 Coding correspondence

Type Stainless Steel Austenitic AISI 316 L

Hardening Not possible BS 316S12

Annealing 1050 1100deg C in water DIN Wnr 14404

Welding Easy using same steel electrodes Euro X3CrNiMo1810

Corrosion properties

Good resistance Atmosphere great number of salts organic acids foods salt waterLow resistance Solutions of reducing acids temperatures over 500deg C

JIS SUS 316L

NF Z2CND17-12

SIS 2348

UNI X2CrNiMo 1712

NOZZLE MATERIALS Properties of materials

36 wwwpnr-nozzlescom CTG SH 07 EU

C1 AISI 420 STAINLESS STEEL

Chemical composition C 020 CR 1300 Coding correspondence

Type Stainless Steel Martensitic AISI 420

Hardening 980deg - 1030deg C in oil BS 420 S 29

Annealing 750deg - 800deg C in air DIN Wnr 14021

Welding Possible with precautions Euro X20Cr13

Corrosion properties Good resistance Drinkable water steamgasoline oil alcohol ammonia

JIS SUS 420 J1

NF Z20C13

SIS 2303

UNI X20Cr13

C2 AISI 416 STAINLESS STEEL

Chemical composition C 012 CR 1250 S 022 Coding correspondence

Type Stainless Steel Martensitic AISI 416

Hardening 950deg - 1100deg C in oil BS 416 S 21

Annealing 750deg - 800deg C DIN Wnr ---

Welding Not possible Euro X120CrS13

Corrosion properties Good resistance Drinkable water steamgasoline oil alcohol ammonia

JIS SUS 416

NF Z12CF13

SIS ---

UNI X12CrS13

D8 POLYVINYLIDENE FLUORIDE (PVDF)

Description HIGH-MOLECULAR WEIGHT THE TOUGHEST OF THE FLUOROCARBON RESINS

Trade names amp SuppliersKYNAR (Atochem North America Inc formerly Penwalt Corporation)

SOLEF (Solvay Polymer Corporation)

Physical andMechanical Properties

Excellent resistance to abrasion and stress fatigue

Extremely pure opaque white resin

Thermal Properties UsefuI in temperatures ranging from -73 149degC (-100 300degF)Heat deflection temperature is (8090deg C at 182 Bars (176 194deg F at 264 psi)

Chemical Compatibility

Excellent chemical resistanceCan be used with wet or dry halogens most strong acids and bases aliphatics aromaticsalcohols and strong oxidizing agentsNot recommended for contact with ketones esters amines and some organic acids(fuming sulfuric acid)

NOZZLE MATERIALS Properties of materialsN

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E1 POLYTETRAFLUOROETHYLENE (PTFE)

Description FLUOROPLASTIC THAT HAVE SOME OR ALL OF THEIR HYDROGEN MOLECULESREPLACED BY FLUORINE

Trade names amp Suppliers

TEFLON TFE FEP and PFA (Dupont Polymer Products)

NEOFLON (Daikin)

FLUON (ICI Americas Inc)

SST-2SST-3 (Shamrock Technologies Inc)

Physical andMechanical Properties

Low coefficient

Low adhesiveness

Buona resistenza agli agenti atmosferici

Good weatherabilityLow resistance to creep and wear unless reinforced with glass figravebers which results in superior resistance

Thermal Properties High and low temperature stabilityHeat deflection temperatures range from 4855deg C at 182 bar (118-132deg F at 264 psi)

Chemical CompatibilityChemically inert

Totally insoluble

E3 ACETAL (ACETAL HOMOPOLYMERS AND COPOLYMERS)

Description HIGHLY CRYSTALLINE RESINS BASED ON FORMALDEHYDE POLYMERIZATION TECHNOLOGY

Trade names amp Suppliers

DELRIN (Dupont Polymer Products Corporation)

CELCON (Hoechst Celanese Corporation)

ULTRAFORM (BASF Corporation)

RTP 800 (RTP Corporation)

LUPITAL amp TENAL (Franklin Polymers Inc)

FULTRON 404 (ICI Americas Inc)

Physical andMechanical Properties

High tensile strength rigidity and esilience

High fatigue endurance

Excellent dimensional stability

Low coefficient of friction

Outstanding abrasion and wear resistance

Excellent creep resistance

Thermal Properties Heat deflection temperatures range from 110 -136deg C at 182 bars(230 - 270deg F at 264 psi) higher if glass figravelled

Chemical Compatibility

Remains stable in long-term high temperature water immersionExcellent resistance to chemicals and solvents but prolonged exposure to strong acids not recommendedNote Suitable for close-tolerance high-performance partsAvailable for machined parts or may be injection molded

NOZZLE MATERIALS Properties of materials

NOZ

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L6 HASTELLOY C4

PHYSICAL AND MECHANICAL PROPERTIES CHEMICAL COMPOSITION CORROSION RESISTANCE

R = 650800 Mpa C = 0015 max

Very good against pitting and tensile-corrosion specially in oxydizing atmosphereResistance in welded joints definitely better than C 276 lower than C22

Rp02 = 250470 Mpa Ni = 65

HRB = 90 Cr = 160

Mo = 155

W = --

Fe = 3 max

Ti = 05

Co = 2 max

APPLICATIONSRecommended for applications with strongly oxidizing atmosphere

L61 HASTELLOY C 22

PHYSICAL AND MECHANICAL PROPERTIES CHEMICAL COMPOSITION CORROSION RESISTANCE

R = 700800 Mpa C = 001 max

Excellent performances with oxydizing atmospheres as well as for pitting and tensile-corrosion conditionsVery good resistance in reducing atmospheres and for welded joints

Rp02 = 360420 Mpa Ni = 56

HRB = 93 Cr = 22

Mo = 13

W = 3

Fe = 3

Ti = --

Co = 25 max

APPLICATIONSChemical industry (gas ducts gas washing and treatment systems phosphoric acid production) Heat exchangers pumps chlorination reactors

L8 HASTELLOY C 276

PHYSICAL AND MECHANICAL PROPERTIES CHEMICAL COMPOSITION CORROSION RESISTANCE

R = 600800 Mpa C = 0015 max

Very good in reducing and oxydizing atmospheresVery good against pitting and tensile-corrosionAcceptable resistance in welded jointsIn cast parts excessive segregation not eliminated by thermal treatment of annealing makes it convenient to use C22 or C4 qualitieswhich assure better corrosion resistance and mechanical properties

Rp02 = 300370 Mpa Ni = 57

HRB = 90 Cr = 145165

Mo = 1517

W = frac345

Fe =

V = 035 max

Co = 25 max

APPLICATIONSChemical industry (air ducts scrubbers fans) Paper industry Thermoelectric plants Steel thermal treatments

NOZ

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MATERIALTENSILE STRENGHT

CORROSION RESISTANCERp 02 R

20degC 800degC 20degC 800degC

(68degF) (1408degF) (68degC) (1408degC)

AISI 302 280 100 680 200

Good sensitive to corrosionbetween grains for slow heatingand cooling in the 450-900deg Crange temperature

AISI 303 280 100 680 200 Discrete

AISI 304304L 270 90 600 100Good especially for 304L304 sensitive to corrosionbetween grains like AISI 302

AISI 309 250 100 640 220 Good Sensitive to corrosion between grains like AISI 302

AISI 310 310 170 650 270Good (gt 304 - 304L)Sensitive to corrosionbetween grains like AISI 302

AISI 316316L 270 110 560 220 Very high especially for 316L

AISI 321 210 100 540 140 Good

AISI 347 280 120 620 200 Good

AISI 416 620 70 750 90

Good in medium corrosive ambient (atmosphere water gasoline alcohol N1-13 foods)Not in high corrosive

BRASS 110-150 --- 360-410 --- Good especially when nickel plated

BRONZE 100-300 --- 200-600 --- Discrete especially with sea water

CAST IRON le 500 V 100-800 V

NICKEL ALLOYS 100-1000 V 300-1300 VVery high also for high temperature To use in the temperaturerange 800-1200deg C

PLASTICS --- --- 20-200 ---

Good also for erosionGenerally they are attackedwith oxidizers like nitric acidhalogens ect

PTFE --- --- 30-40 ---

Very high except for elementarystate of alkaline metalsand to compounds containingfluorine at high temp

DUPLEX STEEL gtAISI 3 gtAISI 3 gtAISI 3 gtAISI 3 Very high also with high temperatureand also for pitting

TITANIUM alloy 195-850 V 300-900 VVery high in oxidizing ambientVery low in reducing ambient and with compounds containing fluorine

Legend Rp 02 = 02 YIELD STRENGHT [MPa]R = ULTIMATE TENSILE STRENGHT [MPa]V = To verify time by time

NOZZLE MATERIALS Mechanical properties of materials

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PIPINGPipes data 74Economic pipe sizes 75Pressure drop in clean steel pipes 76Flange dimensions 78Sieve size conversion chart 80

PIPING

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The following table report the data of pipes according to ANSI B3619 that is one of the most used standards that regulate welded stainless steel pipes

DN NPS OD[mm]

SCHEDULE

5S 10S 40SSTD 80SXS

t m t m t m t m

[mm] [kgm] [mm] [kgm] [mm] [kgm] [mm] [kgm]

6 18 103 NA NA 124 028 173 037 241 048

8 14 137 NA NA 165 050 224 064 302 081

10 38 172 NA NA 165 064 231 086 320 112

15 12 213 165 081 211 101 277 128 373 164

20 34 267 165 103 211 130 287 171 391 223

25 1 334 165 131 277 212 338 254 455 328

32 1frac14 422 165 167 277 273 356 344 485 453

40 1frac12 483 165 192 277 315 368 411 508 549

50 2 603 165 242 277 399 391 551 554 759

65 2frac12 730 211 374 305 534 516 875 701 116

80 3 889 211 458 305 655 549 115 762 155

90 3frac12 1016 211 525 305 752 574 138 808 189

100 4 1143 211 592 305 849 602 163 856 226

125 5 1413 277 960 340 117 655 221 953 314

150 6 1683 277 115 340 140 711 287 1097 432

200 8 2191 277 150 376 202 818 431 1270 656

250 10 2730 340 229 419 282 927 611 1270 827

300 12 3239 396 317 457 365 953 749 1270 988

350 14 3556 396 348 478 419 NA NA NA NA

400 16 4064 419 421 478 480 NA NA NA NA

450 18 457 419 474 478 541 NA NA NA NA

500 20 508 478 602 554 696 NA NA NA NA

550 22 559 478 662 554 767 NA NA NA NA

600 24 610 554 837 635 959 NA NA NA NA

Where

DN = Nominal diameter NPD = Nominal Pipe Size OD = Outside Diameter t = Wall Thickness m = Specific WeightPIPI

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PIPING Pipes data

75wwwpnr-nozzlescomCTG SH 07 EU

The following Specific Pressure Drops (Y) are normally used in the good engineering practice(where Y=ΔPL ΔP Pressur Drop and L Pipe Lenght)

For pipe sizing the Velocity (V) is also usedIn the following table are shown the typical liquid velocities in steel pipes

Some fixed pressure drop values indicationsfor gate valves (fully open) consider a pressure drop of 5 metersbullfor normal bends consider a pressure drop of 5 metersbullfor a check valve consider a pressure drop of 15 metersbull

In the succeeding tables we show the velocity and specific pressure drop for several flow rates and pipe diameters

Not boiling waterY = 02divide05 bar100 m for pump discharge (07 bar100 m max if P gt 50 bar)

Y lt 0110 bar100 m for pump suction

Boiling water Y = 004divide005 bar100 m for pump suction (velocity = 03divide09 ms)

LIQUID LINE TYPE

Specific Pressure Dropsvs Velocity [ms]

0 lt V lt 2 3 lt V lt 10 10 lt V lt 20

NOT BOILING WATER

Pump suctionPump discharge (long)Discharge leads (short)Boiler feedDrainsSloped sewer

03 divide 0606 divide 0912 divide 2712 divide 2709 divide 12

-

06 divide 1209 divide 1515 divide 3715 divide 3709 divide 1509 divide 15

09 divide 1812 divide 2124 divide 4224 divide 42

-12 divide 21

HYDROCARBON LIQUIDS(normal viscosity)

Pump suctionDischarge heather (long)Discharge leads (short)Drains

05 divide 0808 divide 1112 divide 2709 divide 12

06 divide 1209 divide 1515 divide 3709 divide 15

09 divide 1812 divide 2124 divide 46

-

MEDIUM VISCOSITY OILPump suctionDischarge (short)Drains

--

03

05 divide 0901 divide 0209 divide 15

08 divide 1501 divide 0312 divide 18

OTHER WATERCooling tower Chilled waterSea water and generally foulingwater (long pipes) ()

06 divide 09 09 divide 15 12 divide 21

Note () In this case Cameron method has to be used with C=1 Y = 005 divide 012 bar100 m for principal manifold Y = 012 divide 023 bar100 m for secondary manifold

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PIPING Economic pipe sizes

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18rdquo 14rdquo

1 0350 0370 0200 0090 38rdquo 12rdquo

2 0705 1340 0395 0331 0223 0082 0145 0029 34rdquo

3 1060 2890 0593 0673 0333 0176 0217 0061 0125 0016 1rdquo

4 1410 4940 0788 1150 0444 0291 0290 0101 0167 0027 0110 0010

5 1760 7460 0985 1750 0556 0424 0362 0149 0209 0040 0137 0014

6 1180 2460 0667 0594 0434 0207 0251 0054 0165 0019 114rdquo

8 1580 4060 0892 1020 0579 0351 0335 0091 0219 0033 0126 0009 112rdquo

10 1110 1530 0724 0534 0418 0136 0274 0049 0158 0012 0116 0006

15 1670 3250 1090 1130 0627 0284 0411 0099 0236 0026 0174 0012

20 2rdquo 2230 5600 1450 1900 0836 0481 0549 0168 0315 0043 0233 0021

30 0212 0013 212rdquo 2170 4130 1250 1020 0823 0353 0473 0092 0348 0043

40 0283 0022 0190 0007 2900 7180 1670 1760 1100 0606 0631 0155 0465 0073

50 0354 0032 0237 0012 2090 2700 1370 0911 0789 0233 0581 0108

60 0424 0044 0284 0017 2510 3810 1650 1290 0943 0321 0697 0150

70 0495 0079 0332 0022 3rdquo 2930 5120 1920 1720 111 0434 0814 0199

80 0566 0074 0379 0028 0248 0010 312rdquo 2190 2210 126 0554 0925 0253

90 0636 0093 0427 0035 0279 0013 0209 0006 2470 2770 142 0692 1040 0319

100 0707 0114 0474 0043 0310 0015 0232 0007 4rdquo 2740 3400 158 0843 1160 0392

150 1060 0238 0711 0090 0464 0031 0349 0016 0272 0008 4110 7440 236 181 1740 0828

200 1410 0414 0948 0153 0619 0053 0466 0027 0362 0014 315 314 2330 1450

250 1760 0625 1190 0233 0774 0080 0581 0040 0453 0021 5rdquo 2900 2200

300 2120 0889 1420 0324 0930 0112 0698 0055 0543 0030 0352 0011 3480 3070

350 2470 1190 1660 0438 1080 0150 0815 0074 0634 0040 0411 0014 6rdquo 4070 4160

400 2830 1550 1900 0563 1240 0195 0935 0096 0724 0051 0469 0018 0341 0007 4650 5380

450 3180 1930 2130 0707 1390 0242 1050 0120 0815 0063 0528 0022 0366 0009 5230 6790

500 3540 2380 2370 0867 1550 0298 1170 0147 0902 0076 0587 0027 0407 0011

550 3880 2870 2610 1040 1700 0354 1280 0174 0991 0092 0645 0032 0447 0013

600 4240 3390 2840 1220 1860 0418 1400 0204 1090 0110 0704 0037 0488 0015

650 4590 5560 3080 1420 2010 0486 1510 0239 1180 0127 0762 0043 0529 0017

700 4950 4550 3320 1650 2170 0560 1630 0275 1270 0146 0821 0050 0569 0020

750 5300 5200 3560 1880 2320 0637 1750 0314 1360 0164 0879 0057 0610 0023

800 3790 2130 2480 0721 1860 0354 1450 0185 0936 0064 0651 0025 8rdquo

850 4030 2390 2630 0805 1980 0395 1540 0209 1000 0072 0692 0028 0403 0007

900 2790 0901 2090 0438 1630 0232 1050 0008 0732 0032 0427 0008

950 2940 1000 2210 0486 1720 0258 1120 0087 0773 0036 0451 0010

1000 3100 1110 2320 0534 1810 0284 1170 0096 0814 0039 0474 0011

1100 3410 1290 2560 0643 1990 0341 1290 0116 0895 0047 0522 0012

1200 3720 1 580 2800 0763 2170 0403 1410 0135 0974 0055 0569 0015

1300 3030 0890 2360 0473 1530 0157 1060 0063 0616 0017

1400 3260 1020 2540 0544 1640 0183 1140 0072 0664 0019

1500 3490 1170 2720 0617 176 0208 1220 0083 0712 0022

1600 3720 1330 2890 0697 1880 0234 1300 0093 0758 0025

1700 10rdquo 3950 1490 3080 0784 1990 0260 1380 0104 0806 0028

1800 0546 0010 3260 0875 2110 0290 1470 0116 0854 0032

1900 0575 0012 3440 0965 2230 0323 1550 0129 0901 0034

2000 0606 0012 3617 1060 2340 0356 1630 0143 0946 0037

2200 0667 0015 3980 1280 2580 0429 1790 0172 1050 0045

2400 0727 0017 12rdquo 2820 0507 1950 0200 1140 0053

2600 0788 0021 0563 0009 3050 0589 2110 0234 1230 0061

2800 0848 0023 0606 0010 14rdquo 3280 0676 2280 0268 1330 0070

3000 0909 0026 0649 0011 0532 0007 3520 0773 2440 0306 1420 0080

3500 1060 0035 0760 0015 0620 0009 4110 105 2850 0416 1660 0108

4000 1210 0045 0866 0020 0709 0012 16rdquo 4690 135 3250 0532 1900 0139

4500 1360 0056 0976 0025 0798 0015 0606 0007 3660 0674 2130 0173

5000 1520 0069 1080 0029 0886 0018 0674 0009 4070 0822 2370 0212

6000 1810 0097 1290 0042 1070 0026 0808 0013 18rdquo 4880 1160 2850 0301

7000 2120 0130 1510 0055 1240 0035 0940 0017 0741 0010 5690 1580 3310 0403

8000 2420 0168 1730 0072 1420 0045 1080 0022 0847 0012 6510 2050 3790 0525

9000 2730 0210 1950 0091 1600 0056 1210 0027 0954 0015 4270 0659

10000 3030 0257 2170 0111 1770 0067 1350 0033 1050 0019 4740 0801

Legend Q Water Flow Rate (Lpm) V Velocity (ms) Y Specific Pressure Drops (bar100m)Water at ambient temperature in straight pipe

SPECIfIC PRESSURE DROPS fOR WATER fLOW IN CLEAN STEEL PIPE SCH 10S

Q V Y V Y V Y V Y V Y V Y V Y V Y [lm] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m]

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SPECIfIC PRESSURE DROPS fOR WATER fLOW IN CLEAN STEEL PIPE SCH 40S

Legend Q Water Flow Rate (Lpm) V Velocity (ms) Y Specific Pressure Drops (bar100m)Water at ambient temperature in straight pipe

18rdquo 14rdquo

1 0458 0726 0251 0170 38rdquo 12rdquo

2 0918 2590 0501 0600 0272 0136 0170 0044 34rdquo

3 1380 5590 0752 1220 0407 029 0255 0091 0144 0023 1rdquo

4 1840 9570 1000 2090 0543 048 0340 0151 0192 0038 0120 0012

5 2290 14450 1250 3180 0679 070 0425 0223 0241 0057 0150 0017

6 1500 4460 0815 0980 0510 0309 0289 0077 0180 0024 114rdquo

8 2010 7360 1090 1690 0680 0524 0385 0129 0240 0041 0138 0011 112rdquo

10 1360 2520 0850 0798 0481 0193 0300 0061 0172 0015 0127 0008

15 2040 5370 1280 1690 0722 0403 0450 0124 0258 0032 019 0015

20 2rdquo 2720 9240 1700 2840 0962 0683 0600 0210 0344 0054 0254 0026

30 0231 0016 212rdquo 2550 6170 1440 1450 0900 0442 0517 0114 038 0053

40 0308 0027 0216 0010 3400 10720 1920 2500 1200 0758 0689 0193 0507 0091

50 0385 0039 0270 0017 2410 3830 1500 1140 0861 029 0634 0135

60 0462 0055 0324 0023 2890 5410 1800 1610 103 0400 0761 0187

70 0539 0098 0378 0031 3rdquo 3370 7270 2100 2150 1210 0541 0888 0248

80 0616 0092 0432 0039 028 0014 312rdquo 2400 2760 1380 0690 1010 0315

90 0693 0115 0486 0048 0315 0017 0235 0008 2700 3470 1550 0862 1140 0397

100 0770 0141 0540 0059 035 002 0261 0010 4rdquo 3000 4250 1720 1050 1270 0488

150 1150 0295 0810 0125 0524 0042 0392 0021 0304 0011 4500 9300 2580 2260 1900 1030

200 1540 0512 1080 0212 0699 0072 0523 0036 0405 0019 3440 3910 2540 1810

250 1920 0773 1350 0322 0874 0108 0653 0053 0507 0028 5rdquo 3170 2740

300 2310 1100 1620 0449 105 0152 0784 0074 0608 004 0387 0014 3800 3820

350 2690 1470 1890 0606 122 0203 0915 0099 0710 0053 0452 0018 6rdquo 4440 5180

400 3080 1920 2160 0780 14 0264 1050 0128 0811 0068 0516 0023 0375 0009 5070 6690

450 3460 2390 2430 0979 157 0328 1180 0161 0912 0084 0581 0028 0402 0012 5710 8450

500 3850 2950 2700 1200 175 0403 1310 0196 1010 0101 0646 0034 0447 0014

550 4230 3550 2970 1440 192 0479 1440 0232 1110 0122 0710 0041 0491 0016

600 4620 4200 3240 1690 2100 0566 1570 0273 1220 0146 0775 0047 0536 0019

650 5000 6880 3510 1970 2270 0658 1700 0319 1320 0169 0839 0055 0581 0022

700 5390 5630 3780 2280 2450 0759 1830 0368 1420 0194 0904 0063 0625 0025

750 577 6440 4050 2600 2620 0863 1960 042 1520 0218 0968 0072 067 0029

800 4320 2950 2800 0977 2090 0473 1620 0246 1030 0081 0715 0032 8rdquo

850 4590 3310 2970 1090 2220 0528 1720 0277 1100 0091 076 0036 0439 0009

900 3150 1220 2350 0585 1820 0308 1160 0100 0804 0041 0465 001

950 3320 1350 248 0649 1930 0342 1230 0111 0849 0045 0491 0012

1000 3500 1500 261 0714 2030 0377 1290 0122 0894 0049 0516 0013

1100 3850 1750 2870 0860 2230 0452 1420 0147 0983 0059 0568 0015

1200 4200 2140 3140 1020 2430 0534 1550 0172 1070 0069 0620 0018

1300 3400 1190 2640 0627 1680 0200 1160 008 0671 0021

1400 3660 1370 2840 0722 1810 0232 1250 0091 0723 0024

1500 3920 1560 3040 0818 1940 0264 1340 0105 0775 0027

1600 4180 1780 3240 0924 2070 0297 1430 0118 0826 0031

1700 10rdquo 4440 1990 3450 1040 2190 0331 1520 0132 0878 0035

1800 0590 0012 3650 1160 2320 0369 1610 0147 0930 0039

1900 0622 0014 3850 1280 2450 041 1700 0163 0981 0042

2000 0655 0015 40500 1410 2580 0452 1790 0181 1030 0046

2200 0721 0018 4460 1700 2840 0545 1970 0217 1140 0056

2400 0786 0021 12rdquo 3100 0645 2140 0253 1240 0065

2600 0852 0025 0600 001 3360 0749 2320 0296 1340 0076

2800 0917 0028 0646 0012 14rdquo 3610 0859 2500 0339 1450 0087

3000 0983 0032 0692 0013 0573 0008 3870 0982 268 0387 1550 0099

3500 1150 0043 0810 0018 0668 0011 4520 1330 3130 0526 1810 0134

4000 1310 0055 0923 0023 0764 0014 16rdquo 5160 1720 3570 0673 2070 0172

4500 1470 0068 1040 0029 0860 0018 0658 0009 4020 0853 2320 0214

5000 1640 0084 1150 0034 0955 0022 0731 0011 4470 1040 2580 0262

6000 1960 0118 1380 0049 1150 0031 0877 0016 18rdquo 5360 1470 3100 0373

7000 2290 0158 1610 0065 1340 0042 1020 0021 0808 0012 6250 2000 3610 0499

8000 2620 0204 1840 0085 1530 0054 1170 0027 0924 0015 7150 2590 4130 065

9000 2950 0256 2080 0107 1720 0067 1310 0033 1040 0019 4650 0816

10000 3280 0313 2310 0130 1910 0081 1460 0041 1150 0023 5160 0992

Q V Y V P V Y V Y V Y V Y V Y V Y [lm] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m]

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10 75 12 038 4 11 50

15 80 12 044 4 11 55

20 90 14 065 4 11 65

25 100 14 082 4 11 75

32 120 14 117 4 14 90

40 130 14 139 4 14 100

50 140 14 162 4 14 110

65 160 14 214 4 14 130

80 190 16 343 4 18 150

100 210 16 422 4 18 170

125 240 18 611 8 18 200

150 265 18 751 8 18 225

175 295 20 1020 8 18 255

200 320 20 1230 8 18 280

250 375 22 1850 12 18 335

300 440 22 2550 12 22 395

350 490 22 3180 12 22 445

400 540 22 3850 16 22 495

450 595 22 4700 16 22 550

500 645 24 6040 20 22 600

PN 6 (UNI 6091)

ND 6 (DIN 2527) DN Flange Holes

D t W N Oslash a

90 14 063 4 14 60

95 14 071 4 14 65

105 16 101 4 14 75

115 16 122 4 14 85

140 16 180 4 18 100

150 16 209 4 18 110

165 18 287 4 18 125

185 18 365 4 18 145

200 20 461 8 18 160

220 20 565 8 18 180

250 22 812 8 18 210

285 22 1050 8 22 240

315 24 1410 8 22 270

340 24 1620 12 22 295

405 28 2510 12 25 355

460 28 3520 12 25 410

520 30 4820 16 25 470

580 32 6350 16 30 525

640 32 7720 20 30 585

715 34 1020 20 33 650

PN 16 (UNI 6093)

ND 16 (DIN 2527) Dimensions Holes

D t W N Oslash a

ND 10 (DIN 2527) Dimensions Holes

D t W N Oslash a

90 14 063 4 14 60

95 14 071 4 14 65

105 16 101 4 14 75

115 16 122 4 14 85

140 16 180 4 18 100

150 16 209 4 18 110

165 18 287 4 18 125

185 18 365 4 18 145

200 20 461 4 18 160

220 20 565 8 18 180

250 22 812 8 18 210

285 22 1050 8 22 240

315 24 1410 8 22 270

340 24 1650 8 22 295

395 26 2410 12 22 350

445 26 3080 12 22 400

505 26 3960 16 22 460

565 26 4960 16 25 515

615 26 5860 20 25 565

670 28 7530 20 25 620

PN 10 (UNI 6092)

LegendaDN Nominal DiameterD Flange External Diametert Flange ThicknessW Flange WeightN Hole NumberOslash Hole Diametera Hole axis

PIPING Flange dimensionsPI

PIN

G

Blind flanges to DIN 2527

79wwwpnr-nozzlescomCTG SH 07 EU

LegendDN Nominal DiameterD Flange External Diametert Flange ThicknessW Flange WeightN Hole NumberOslash Hole Diametera Hole axis

12rsquorsquo 889 111 08 4 159 603

34rsquorsquo 984 127 09 6 159 698

1rsquorsquo 1079 143 10 4 159 794

114rsquorsquo 1175 159 13 4 159 889

112rsquorsquo 1270 175 14 4 159 984

2rsquorsquo 1524 190 18 4 190 1206

212rsquorsquo 1778 222 32 4 190 1397

3rsquorsquo 1905 238 41 4 190 1524

312rsquorsquo 2159 238 59 8 190 1778

4rsquorsquo 2286 238 77 8 190 1905

5rsquorsquo 2540 238 91 8 222 2159

6rsquorsquo 2794 254 118 8 222 2413

8rsquorsquo 3429 286 204 8 222 2984

10rsquorsquo 4064 302 318 12 254 3619

12rsquorsquo 4826 317 500 12 254 4318

14rsquorsquo 5334 349 600 12 286 4762

16rsquorsquo 5969 365 770 16 286 5397

18rsquorsquo 6350 397 950 16 317 5778

20rsquorsquo 6985 429 1230 20 317 6350

22rsquorsquo 7493 460 1510 20 349 6921

ANSI 150 lb DN Flange Holes

D t W N Oslash a

952 143 10 4 159 667

1175 159 14 4 190 825

1238 175 18 4 190 889

1333 206 27 4 190 984

1556 222 36 4 222 1143

1651 254 45 8 190 1270

190S 286 68 8 222 1492

209S 317 91 8 222 1683

2286 349 132 8 254 1841

2540 349 150 8 254 2000

2794 381 200 8 254 2349

3175 413 277 12 254 2699

3810 476 450 12 286 3302

4445 540 700 16 317 3873

5207 571 103 16 349 4508

5842 603 141 20 349 5143

6477 635 181 20 381 5715

7112 667 228 24 381 6286

7747 698 282 24 413 6858

8382 730 311 24 444 7429

ANSI 400 lb Dimensions Holes

D t W N Oslash a

ANSI 300 lb Dimensions Holes

D t W N Oslash a

952 143 10 4 159 667

1175 159 14 4 190 825

1238 175 18 4 190 889

1333 190 27 4 190 984

1556 206 32 4 220 1143

1651 222 36 8 190 1270

1905 254 54 8 222 1492

2095 286 73 8 222 1683

2286 302 95 8 222 1841

2540 317 122 8 222 2000

2794 349 159 8 222 2349

3175 365 227 12 222 2699

3810 413 370 12 254 3302

4445 476 580 16 286 3873

5207 508 840 16 317 4508

5842 540 1070 20 317 5143

6477 571 1390 20 349 5715

7112 603 3900 24 349 6286

7747 635 2230 24 349 6858

8382 667 2700 24 413 7429

PIPING Flange dimensions

PIPI

NG

flanges to ANSI norms

80 wwwpnr-nozzlescom CTG SH 07 EU

PIPI

NG

Sieves are used both for determining the particle size distribution of a granular material and to filter solid particles in a liquid Normally the sieve is made with a fabric whose characteristic dimensions areL is the Opening Width (free passage)D is the Diameter of the wireP is the Pitch of the wireS is the Thickness of the fabricTo classify particle sizes there is some Sieve Series according to specific standardsthe most known are Tyler Sieve Series US Sieve Series UK Sieve SerieshellipThe Tyler mesh size indicates exactly the number of openings per linear inch of mesh

L[microm]

TYLER Sieve[Mesh No]

ASTM E11 Sieve[Mesh No]

BS 410 Sieve[Mesh No]

DIN 4188 Sieve[mm]

5 2500 2500 0005

10 1250 1250 0010

15 800 800 0015

20 625 635 625 0020

22 0022

25 500 500 500 0025

28 0028

32 na 450 440 0032

36 0036

38 400 400 400

40 0040

45 325 325 350 0045

50 0050

53 270 270 300

56 0056

63 250 230 240 0063

71 0071

75 200 200 200

80 0080

90 170 170 170 0090

100 0100

106 150 140 150

112 0112

125 115 120 120 0125

140 0140

150 100 100 100

160 0160

180 80 80 85 0180

200 0200

In the german standard (DIN norm 4188) the Opening Width (L) is given in millimeters

PIPING Sieve size conversion chartPI

PIN

G

81wwwpnr-nozzlescomCTG SH 07 EU

L[microm]

TYLER Sieve[Mesh No]

ASTM E11 Sieve[Mesh No]

BS 410 Sieve[Mesh No]

DIN 4188 Sieve[mm]

212 65 70 72

250 60 60 60 0250

280 0280

300 48 50 52

315 0315

355 42 45 44 0355

400 0400

425 35 40 36

450 0450

500 32 35 30 0500

560 0560

600 28 30 25

630 0630

710 24 25 22 0710

800 0800

850 20 20 18

900 0900

1000 16 18 16 1000

1120 1120

1180 14 16 14

1250 1250

1400 12 14 12 1400

1600 1600

1700 10 12 10

1800 1800

2000 9 10 8 2000

2240 2240

2360 8 8 7

2500 2500

2800 7 7 6 2800

3150 3150

3350 6 6 5

3550 3550

4000 5 5 4 4000

4500 4500

4750 4 4 35

5000 5000

5600 35 35 3

6700 3 0265 in 1

8000 25 516 in na

Applicable standards areISO 565 (1987) ISO 3310 (1999) ASTM E 11-70 (1995)DIN 4188 (1977) BS 410 (1986) AFNOR NFX11-501 (1987)

Legend Q Water Flow Rate V Velocity P Pressure drop Pressure drop in bar per 100 meters of straight pipe (water at ambient temperature)

PIPING Sieve size conversion chart

PIPI

NG

Besides its main range of nozzles for industrial applications PNR manufactures a wide range of complementary products and systems to optimize the use of spray jets and fluids control in most of the modern industrial processes

PNR PRODUCT RANGE

CTG AC

CTG LS

CTG UG

CTG AZ

Complementary Products andAssembly FittingsA complete line of nipples clamps swivel joints and everything that helps you to assemble align and service your spraying systems quickly and easilyAir blowers mixing eductors filters clean-ing guns and lances hose reels steam heaters pressure tanks quick couplings to help you build up a professional system upgraded to the latest standards

Tank washing systemsA complete range from simple fixed washing heads to the two-axis heads from mushroom nozzles to fluid driven reaction heads up to the motor driven washing heads equipped with a pneu-matic or electric motorAll for the inside cleaning of industrial tanks according to the latest technology accessories included

Spray nozzles for industrial applicationsOne of the world most complete lines of nozzles for numberless industrial appli-cations Nozzles with a wide openings range various types of vanes several spray patterns anti-clog design available in small and big dimensions and made in many food-grade materials like PFTE and Stainless Steel 316L with threaded and flanged connections

Air assisted atomizersUltrasonic classic and automatic atomiz-ers for the finest atomization in any insus-trial process High quality machining and strict quality control ensure your systems top professional resultsProgramming and control panels for an easy assembly of complete humidification systems

CTG SP

CTG PM

CTG SW

CTG LN

Spraydry nozzlesAir assisted or hydraulic high pressure ato-mizers made in high-quality metal alloys or tungsten carbideA complete line of nozzles for the moder-nization of existing facilities at competitive prices To ensure highly accurate results and a long service life these nozzles are manufactured with the finest materials and technologically advanced machines

Paper mill productsA line of products specifically designed for perfect results on paper mill machines including disc nozzles patented for self-cleaning filters flat jet nozzles with orifices in sapphire ruby and ceramic oscillating tubes equipped with a computer driven motor

Steelwork nozzlesA complete line of nozzles for steelwork applications including continuous casting air atomizers and conventional nozzles descaling nozzles for high pressure sys-tems dovetail tips for cylinders cooling and high capacity flanged nozzles for coke quenching

Gas cooling lancesSpillback or air assited lances for gas coo-ling in steelworks cement plants and other industrial applicationsWe can supply spare parts upgrade your plant and even supply a complete PLC driven system to enhance the towers per-formances to the highest efficiency level allowed by today technology

wwwpnr-nozzlescomCTG SH 07 EU

CTG SH 07 EUwwwpnr-nozzlescom

STAM

PATO

IN E

U 09

09

copy B

ellamp

Tany

Our products are distributed through

We are also represented in

PNR AmericaPNR Asia

PNR BalticPNR Benelux

PNR ChinaPNR Czech Republic

PNR DeutschlandPNR France

PNR ItaliaPNR Mexico

PNR UK

ArgentinaAustraliaAustriaBrazil

BulgariaCanada

ChileCroatia

DenmarkFinlandGreece

IndiaIndonesia

IranIrelandKorea

MalaysiaNorway

New ZealandPakistan

PhilippinesPoland

Portugal

RumeniaRussiaSerbia

SingaporeSlovenja

SpainSouth Africa

SwedenTaiwanTurkey

Venezuela

Page 18: SPRAY CTG SH 07 EU ENGINEERING HANDBOOK

18 wwwpnr-nozzlescom CTG SH 07 EU

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SLIQUID SPRAY AND SPRAY NOZZLES Droplet spectrum

PNR can supply upon request complete documentation con-taining test reports about the aforementioned parameters and additional information for all PNR atomizersThe diagrams beside show the distribution of droplet diameters and droplet velocities of a spray under test as available to our customers

In the photo beside a test being performed at our laboratoriesWe use a computer driven laser interpherometer to detect and record the spray parameters while fluid capacities and feed pressure values are monitored through high precision instru-ments

IMPORTANT NOTE

The droplet size values measured with a PDPA instrumentation are representative of a well specified volume inside the spray and taking measurements in a different volume they can be considerably differentA correct spray droplet size characterization requires then not only tests being performed in several volumes within the spray but also that those measure volumes are selected with regard to the process the droplets are expected to performAs an example the droplet characterization of a spray should define how many volumes have been tested and which are the coordinates of each single test volume in relation to the nozzle orifice

Most of the times pretending to describe the droplet spectrum of a spray nozzle at a given pressure with only one diagram is therefore not correct

19wwwpnr-nozzlescomCTG SH 07 EU

In order to calculate the discharge flow rate from a given nozzle the Bernoulli law shall be used which says that the energy of a liquid flow remains unchanged over alI the sections of the flow Friction and turbu-lence losses are neglected which is reasonable for our purposes if the cal-culation is performed over two sections not too far away from each other

The Bernoulli law can be written as follows

Therefore if we consider two sections of the same pipe section A and section B we can write that the flow energy remains constant in the form

If we finally consider that the two above sections are taken immediately before and immediately after the nozzle outlet orifice being

ZA = ZB PB = 0 (PA is a differential pressure referred at the atmosphere pressure)

VA cong 0 negligible as compared to VB (for orifice diameter much smaller than the duct diameter)

we shall come to the formula

When we define a new constant k to include the value of the nozzle orifice outlet area (A) then we come to the following equation which says that for a nozzle spraying into a room at ambient pressure the exiting flow is proportional to the feed line pressure

Considering now two different pressure values for the same nozzle since k is a constant quantity we can write that

and derive from the above an equation that makes it possible to calculate the nozzle flow value at any given pressure value once the flow value at another pressure value is known

The energy of a given liquid flow crossing a given pipe section is composed of three parts namely

P Pressure energy of liquid particle per volume unit

1 ρV2 Kinetic energy of liquid particle per volume unit2ρgz Potential Energy of liquid particle per volume unit

Where ρ = density of liquid g = gravitational acceleration

z = height respect to one plane of reference V = liquid velocity

PA = 1 ρVB 2 rArr

2

K = Q rArr

PK =

Q1 = Q2 rArr

P1 P2

Q = A V rArr

Q = A x C x P rArr

1 P + 1 ρV2 + ρgz = E

2

VB = 2 PA rArr ρ

Q1 = P1

Q2 P2

3 V = C P

4 Q = K P

2 PA + 1 ρVA 2 + ρgzA = PB + 1 ρVB

2 + ρgzB 2 2

EXIT VELOCITY DEPENDS UPON PRESSURE

NOZZLE CAPACITY DEPENDS UPON PRESSURE

NOZZLE CAPACITYAT A DIFFERENT PRESSURE

5 Q2 = Q1 P2

P1

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LIQUID SPRAY AND SPRAY NOZZLES Nozzle flow rate

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SLIQUID SPRAY AND SPRAY NOZZLES Nozzle flow rate

The Equation (5) has been obtained after having simplified the real problem neglecting several factors like for examplebullInmostofthepracticalapplicationcasestheflowisturbulentandnotlaminarbullFrictionlossestendtostronglyincreasewithliquidvelocitybullDependinguponthetypeofnozzleadifferentpercentageoftheavailableenergyisusedtobreakupthejetandgivethe

desired spray pattern and spray angle

For the above reason equation (5) gives reliable results if used in a limited pressure range around the pressure value where the flow rate is known with this pressure range depending upon the type of nozzleOur experience has shown that one can expect the error in the calculated value to be lower than +- 6 for pressure values ranging from 13 to 3 times the reference value

As an example a nozzle rated for 10 lpm at 3 bars would have according to equation (5) the following flow valuesa 1 bar 577 lpma 9 bar 173 lpmin real conditions it can be expected the flow rate values to beas high as 61 lpm a 1 baras low as 162 lpm a 9 barAbove considerations are to be used as a guideline only because of the many factors influencing real operations which have not been considered here for example liquid temperature viscosity and density

Possible percentage deviation from theoretical flow rate values

Also above mentioned percentage errors have to be understood for nozzles using part of the flow energy to produce wide angle spray patternsLower values can be expected for narrow angle nozzles impact nozzles and straight jet nozzles Laboratory tests and diagrams showing real flow rate values for each nozzles are used in practice when a precise result must be available

Nozzle discharge coefficient

With reference to equation (4) if we consider the pressure value to be equal to 1 (P = 1 bar) the flow rate of the nozzle becomes

K is a parameter widely used in the fire fighting industry

In some instances reference is made to the nozzle discharge coefficient or shortly to the nozzle coefficient to indicate the nozzle flow rate for a unitary pressure Of course for a given pressure value Pn the flow value will be

+ 6

+ 3

- 3

- 6

CAPACITY AT A GIVEN PRESSURE VALUEWHEN K KHOWN

NOZZLE CAPACITYFOR P=1 barQ = K P = K 1 = K

6 Qn = K Pn

21wwwpnr-nozzlescomCTG SH 07 EU

The spray angle is the opening angle which the nozzle jet of droplets forms at the moment when it leaves the nozzle orifice and it is one of the fundamental parameters for the choice of a given nozzleIn fact the amplitude of the spray angle determines in connection with the distance between the nozzle orifice and the target to be covered the spray coverage and the density of liquid sprayed with respect to the cover area See our Catalogue for description of the different nozzle spray patterns The table at the bottom of the page gives the theoretical spray width based on the nozzle spray angle and the distance from the nozzle orifice It is important to note that because of several factors like gravity forces and aerodynamic drag the spray angle value cannot be maintained but in in a limited distance normally up to 300 mm from the orifice For air assisted atomizers it is improper to use the term spray angle since no precise value can be measured Therefore the values given by Catalogues are to be intended as guidelines only

THEORETICAL SPRAY COVERAGE

at various distances from nozzle orifice

Spray 50 100 150 200 250 300 400 500 600 700 800 1000 Angle mm mm mm mm mm mm mm mm mm mm mm mm

15deg 13 26 40 53 66 79 105 132 158 184 211 263 25deg 22 44 67 89 111 133 177 222 266 310 355 443 30deg 27 54 80 107 134 161 214 268 322 375 429 536 35deg 32 63 95 126 158 189 252 315 378 441 505 631 40deg 36 73 109 146 182 218 291 364 437 510 582 728 45deg 41 83 124 166 207 249 331 414 497 580 663 828 50deg 47 93 140 187 233 280 373 466 560 653 746 933 60deg 58 116 173 231 289 346 462 577 693 808 924 1150 65deg 64 127 191 255 319 382 510 637 765 892 1020 1270 70deg 70 140 210 280 350 420 560 700 840 980 1120 1400 75deg 77 154 230 307 384 460 614 767 921 1070 1230 1530 80deg 84 168 252 336 420 504 671 839 1010 1180 1340 1680 90deg 100 200 300 400 500 600 800 1000 1200 1400 1600 2000 95deg 109 218 327 437 546 655 873 1090 1310 1530 1750 2180 100deg 119 238 358 477 596 715 953 1190 1430 1670 1910 2380 110deg 143 286 429 571 714 857 1140 1430 1710 2000 2290 2856 120deg 173 346 520 693 866 1040 1390 1730 2080 2430 2771 3464 130deg 215 429 643 858 1070 1290 1720 2150 2570 3002 3431 4289

WhereASCbull = Actual Spray CoverageTSCbull = Theoretical Spray CoverageASAbull = Actual Spray AngleTSAbull = Theoretical Spray AngleL bull = Spray Distances

TSC = 2 middot L middot ctan ( TSA )2

7

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LIQUID SPRAY AND SPRAY NOZZLES Spray angle

22 wwwpnr-nozzlescom CTG SH 07 EU

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SLIQUID SPRAY AND SPRAY NOZZLES Spray angle

Depending upon the nozzle design variations of feed pressure may have a great influence on the spray angle valueGenerally with increasing pressure turbulence full cone nozzles will produce narrower angles flat jet nozzles will show a wider angle spray while nozzles working on the deflection principle like spiral nozzles and K style flat jet nozzles will be less affected by pressure changesAll nozzles will not function properly with very low pressure values (from 05 bar down depending upon nozzle type ) with a marked decay in performance larger drops not well defined spray pattern lower spray angle values

The above pictures show spray angles for different nozzles and different pressure valuesShould your application strictly require that a given value of the spray angle is obtained under a given pressure value or pressure range of values please obtain a test report from our laboratories

Full cone nozze DDW 2235

Flat jet nozzleJCW 2245

Spiral nozzeECW 2230

Pressure 05 bar Pressure 05 bar Pressure 05 bar

Pressure 3 bar Pressure 3 bar Pressure 3 bar

Pressure 10 bar Pressure 10 bar Pressure 10 bar

Photo obtained with 120000s flashlight

picture 1

picture 4

picture 7

picture 2

picture 5

picture 8

picture 3

picture 6

picture 9

NotePicture 2 shows clearly the droplet generation mechanism as described at page 15

23wwwpnr-nozzlescomCTG SH 07 EU

Terms and definitions

A very important characteristic of a spray nozzle is a parameter called Spray Distribution which gives a precise information about how evenly the drops of the spray are distributed onto the area covered by the sprayIt is self understood that normally it is preferable to obtain the most even distribution possibleIn the past this was done through the visual examination of a diagram reporting the quantity of water contained for example in glass pipes aligned onto the spray coverage areaPnr has determined to obtain such a result in a scientific way through high technology instrumentation as shown in the pictures below showing one of our patternators and a typical distribution diagram

Now to the spray geometry and some definition letrsquos consider a nozzle with a capa-city Q at the pressure PAt every value for distance H which we call height of spray we can define a plane lsquonrsquo normal to the nozzle axis on which a line can define the intersection of the spray onto the planeThe area covered by the spray on the plane lsquonrsquo has a surface S depending from the following parametersa) Spray pattern Fb) Opening angle of the spray αc) Height of the spray H

We can then write S=S( F α H )

In case of a full cone nozzle S is a circle with diameter C and S = 0785 C2

The capacity of the nozzle flows through the surface S but each smaller area inside the surface S will probably have a different value for the flow passing through itWe introduce then the value of Specific Capacity q

1) Specific Capacity

The function q depends upon the single point (xy) in the section S and then

Determining the function q is however very expensive therefore in practice two different functions are used which give in most occurrences sufficient information

2) Linear Distribution

3) Angular distribution

part Qpart x

qx =

Diagram 1

q = limΔS 0

ΔQΔS

q = = f (x y H)part Qpart S

part Qpart φ

qφ =

ΔQ is the liquid flowing through a surface ΔSwhere ΔS is a fraction of the surface S

x and y are the local coordinates in the section planewhere H is the distance of the test surface from the nozzle orifice

partQ is the variation in capacitywhere partx is the variation of a generic linear coordinate

partQ is the variation in capacitywhere partφ is the variation of a generic angular coordinate

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LIQUID SPRAY AND SPRAY NOZZLES Spray Distribution

24 wwwpnr-nozzlescom CTG SH 07 EU

LIQUID SPRAY AND SPRAY NOZZLES Spray Distribution

Values extracted from these functions can characterize the spray and allow for drawing the diagrams defined as Distribution Curves

Analyzing the above curves it is possible to determine the type of water distribution along the spray coverage and the type of spray pattern like for example a full cone hollow cone flat or straight jet spray

Distribution measurement

The water distribution along the spray coverage is determined by means of an instrument called Patternator

A patternator consists of the following parts 1) Liquid collector2) Cell block3) Measure block4) Unloading block

The nozzle is above the instrument and it is orienta-ted in such a way the jet is collected into the upper liquid collectorThe liquid collector can be linear ( diagram 5 ) or round ( diagram 6 ) according to the test being runFrom the single parts in the collector the liquid is sent into the corresponding cells below (2)

The Measure block (3) determines the liquid content in each single cell then the unloading block (4) empties the instrument sending the liquid to the collection drain

There are two types of patternators

Analogic1 the different levels of liquid is visible through the transparent walls of the cells or pipes sometimes containing some kind of floating balls and a picture can be taken with a cameraDigital2 Delivering an automatic reading of the values in the cells the values being supplied as an electronic file from which a distribution curve can be easily obtained

Diagram 2 Linear distribution Diagram 3 Angular distribution

Diagram 4

Diagram 6 Circular collectorDiagram 5 Linear collector

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25wwwpnr-nozzlescomCTG SH 07 EU

LIQUID SPRAY AND SPRAY NOZZLES Spray Distribution

Normalizing distribution curve

The values obtained from the cells of the patternator showing the water quantity collected in the single cells allow for preparing a Distribution curve which can be given as a single line curve or as a row of vertical barsThese resemble the liquid level collected into the glass pipes of the old type instrumentation

The curves prepared based on the liquid level in the single cells still are not precise they depend in fact from the testing time the longer this time the larger the liquid quantity sprayedTo eliminate the influence of time from the test it is necessary to transform the effective curves to normalized curves

Normalized4) linear distribution

Normalized5) angular distribution

Please note that Maximum value is the one belonging to the series of values measured in the cellsIn addition to the distribution it is possible to normalize the intervals to with the following formulas

Normalized 6) linear interval

Normalized 7) angular interval

The linear normalized amplitude is defined inside an interval [-1 +1]The angular normalized amplitude is defined inside an interval [0+2π]

Diagram 7 Effective linear distribution curve Diagram 8 Effective angular distribution curve

Mx

xx q

q=δ

N

πθ

2=Δ

Diagram 9 Normalized linear distribution curve Diagram 10 Normalized angular distribution curve

qx is the linear distribution of a generic cellwhere qx

M is the maximum linear distribution measured

qφ is the linear distribution of a generic cellwhere qφ

M is the maximum linear distribution measured

2 is the normalized linear amplitude of the spraywhere N is the number of active cells (active cells = cells containing liquid)

2π is the normalized angular amplitude of the spraywhere N is the number of active cells (active cells = cells containing liquid)

Mq

q

ϕ

ϕϕδ =φ

φ

φ

2

N=Δλ

2

N=Δλ

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26 wwwpnr-nozzlescom CTG SH 07 EU

Evaluation of spray distribution

To evaluate distribution curves it is necessary to take three properties into consideration

a) UNIFORMITY b) MONOTONY c) SIMMETRY

As described in the following diagrams and definitions

a) UNIFORM A distribution that minimizes the ratio AAdeg

b) MONOTONE Is a distribution with a curve which grows on the left side and decreases on the left side c) SYMMETRIC Is a distribution which minimizes the Ratio A+A-

Based on the above definitions the following curves show the ideal situations

The three properties are then evaluated by means of the following parameters

1 Integral uniformity

2 Incremental uniformity

3 Symmetry index

Complete details about the above formulas and definition can be found in our Technical Bulletin REL 080002 which shall be released from our Technical Department on request

Diagram 12Normalized and monotone distribution

Diagram 11Normalized and monotone distribution

Diagram 14Ideal monotony

Diagram 15Ideal symmetry

Diagram 13Ideal uniformity

1001 sdot=MA

AU

1002

2 sdot=lowastσ

U

1001

sdot⎥⎦

⎤⎢⎣

sdotminus=

lowast

lowast

δ

ε

NI S

sum minus=lowast

M

i iδδε

A is the area included in the normalized curvewhere Adeg is the rest of the area included in the 2x1 rectangle

Left side is the area -1 0where Right side is the area 0 +1

A+ is the area included below the curve on the right sidewhere A- is the area included below the curve on the left side

where

where δrsquo is the value of normalized liquid content in the symmetric cell N number of cells containing liquid in half of the diagram

lowast

lowast sum=

N

N

i i

δ

δ N Number of cells containing liquid

A area included below the curve AM area included below the ideal curvewhere

sum minus= +lowast

1

N

i ii δδσ

N Number of cells containing liquid

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SLIQUID SPRAY AND SPRAY NOZZLES Spray Distribution

27wwwpnr-nozzlescomCTG SH 07 EU

Liquids are characterized for their property of undergoing continuous deformation when subjected to shear stress The property of fluids (liquids or gases) to resist flowing due to the existence of internal friction within the fluid is called visco-sity

Thus if we imagine the different layers of fluid sliding one over the other with friction we can imagine that viscosity is defined the force required to move a unit area of fluid for a unit distance Viscosity is measured with many different systems among which the most used are the following

The following table shows correspondences between the most used viscosity units

The viscosity value of a liquid depends upon the temperature therefore the viscosity value must always be given with reference to a temperature value The viscosity of water (20deg C) is 1 Centipoise and 1 Centistoke since water mass density = 1

KINEMATIC SAYBOLT SAYBOLT ENGLER VISCOSITY UNIVERSAL FUROL

Centistoke Sq feetsec SSU SSF Degrees

100 000001076 310 --- 100

500 000005382 424 --- 137

1000 00001076 588 --- 183

1566 00001686 80 --- 245

2052 00002209 100 --- 302

2515 00002707 120 --- 357

4295 00004623 200 --- 592

1080 0001163 500 523 1460

1510 0001625 700 720 2044

1942 0002090 900 921 2628

3023 0003254 1400 143 4090

3885 0004182 1800 183 5260

5394 0005806 2500 254 7300

10788 001161 5000 509 146

15103 001626 7000 712 204

19419 002092 9000 916 263

32365 003483 15000 1526 438

METHOD UNIT DIMENSIONS NOTES

1 Dynamic viscosity(Absolute viscosity) Poise ML T-1 Poise = 100 Centipoises = (1 dyne per seccm2)

2 Kinematic viscosity Stoke L2 T-1 1 Stoke = 100 Centistoke = (cm2sec)Kinematic viscosity = Dynamic viscositydensity

3 SSUSSF

One of the most widely instruments to determine is the Saybolt viscosimeter which measures the time in seconds required for a fixed volume of a given liquid to flow through an orificeSSU = Seconds Saybolt Universal relates to a smaller orifice for less viscous liquidsSSF = Seconds Saybolt Furol relates to a larger orifice for more viscous liquids

LIQUID SPRAY AND SPRAY NOZZLES Influence of liquid viscosity

LIQU

ID S

PRAY

AND

SPRA

Y NO

ZZLE

S

28 wwwpnr-nozzlescom CTG SH 07 EU

Viscosity influence on nozzle flow rate

AlI nozzle Catalogue data refer to spraying water (water cinematic viscosity is equal to 1 Centistoke)A liquid with viscosity higher than water will require more energy to be pumped and sprayed and will flow with lower velocity at the same pressure and this will cause a reduction in the turbulence of the flow For the above reason nozzles working on the turbulence principle like normal full cone nozzles and whirl hollow cone nozzles will show an increase in capacity while spraying liquids with viscosity higher than water This increase is very consistent for small size nozzles where the small radius of the whirl chamber tends to cause high turbu-lence in the flow and tends to diminish and to disappear for nominal capacity valves (capacity values at 3 bar) larger than 15 liters per minute

The graph below shows for a liquid with a viscosity of about 4 Centistokes typical variations in the nozzle flow rate value for different values of the nozzle whirl chamber diameter As it may be seen these variations can be neglected in most practical applications where nozzles with whirl chamber diameters well over 3 mm are used

For other types of nozzles not working on the turbulence principle the increase on viscosity will simply reduce the liquid exit velocity at the orifice thus causing a decrease in capacity Experience shows that this decrease ranges between 3 and 6 of nominal water capacity that is to say that the variation introduced is in the same order of magnitude as the nozzle flow rate toler-ance

Viscosity influence on nozzle spray angle and spray pattern

With reference to the theory of jet break-up and droplet information it can be easily imagined that spraying a liquid more viscous than water is a difficult task

Al the properties of the spray tend to worsen therefore one can expectA higher value for the minimum operating pressure that is the pressure value which allows for obtaining a well defined 1 spray with the expected spray angle A worse spray distribution since the viscous behavior of the liquid makes it more difficult to pro-duce fine droplets and 2 to distribute them evenly with the desired spray pattern A narrower spray angle It is difficult to give guidelines since results on different nozzles at different pressures and with 3 different liquids are scarcely predictableHowever our experience shows that in many cases the use of impact nozzles can give acceptable results where all other type of nozzle failsA laboratory test or a field test are stili the safest way to obtain sound results

50

45

40

35

30

25

20

15

10

5

0 2 3 4 5 6 7 8 9

Increase Flow rate vs Whirl Chamber Diameter

Incr

ease

Flo

w R

ate

[mm

]

Whirl Chamber Diameter [mm]

LIQUID SPRAY AND SPRAY NOZZLES Influence of liquid viscosityLI

QUID

SPR

AYAN

D SP

RAY

NOZZ

LES

29wwwpnr-nozzlescomCTG SH 07 EU

With reference to the Bernoulli Rule as exposed in page 6 one can say that the pressure energy of the liquid flow at the nozzle inlet is transformed totally (minus some losses due to friction inside the nozzle) into liquid velocity at the nozzle orificeCatalogue figures give nozzle capacities when spraying waterIf the specific gravity or density of the liquid is different from that of water the available pressure energy will produce a different liquid velocity at the nozzle orificesIn other words a given quantity of energy will spray always the same quantity of liquid mass but different volumes (flow rates) according to the liquid specific gravity or density

Therefore a liquid heavier than water will exit the nozzle with a lower velocity at lower flow rate while to the contrary a liquid lighter than water will be sprayed at higher velocity at higher flow rate

The following formula is to be applied

The table below gives the value of a correction factor to obtain the flow rate of a liquid with different specific weight as water

WhereQL Liquid flow rateQW Water flow rateF Correction factor

kgliter Libregallon F

06 50 129

07 58 120

08 67 112

09 75 105

10 83 100

11 92 095

12 100 091

13 109 088

14 117 085

15 125 082

16 134 079

17 142 077

18 150 075

19 159 073

20 167 071

QL = F QW8

LIQUID SPRAY AND SPRAY NOZZLES Influence of liquid specific gravity

LIQU

ID S

PRAY

AND

SPRA

Y NO

ZZLE

S

30 wwwpnr-nozzlescom CTG SH 07 EU

The spraying water impact of a nozzle depends on several factors and more precisely spray distribution pattern and spray angle The first step to calculate the impact value which is usually expressed in Kilograms per square centimeter is to deter-mine Total Theoretical lmpact Value using the following formula

The obtained value has to be multiplied by the Total Theoretical Impact per Square Centimeter Coefficient (E)The final value is the Spraying Liquid Impact expressed in kgpcm2Of course not alI the energy of the fluid vein is transferred to the impact point

A part of this energy sometimes a considerable part goes to obtain a desired spraying angle by having the liquid vein acquire a high rotational speed inside the whirl chamber The highest value of impact is obtained with straight jet nozzle and the value can be calculated multiplying spraying pressure per 19The tables below containing the Total Theoretical Impact sqcm coefficient values for different spray pattern nozzles for a dis-tance of 300 mm

[kgpcm2]

TOTAL THEORETICAL IMPACT PER SQ CM COEFFICIENT AT DISTANCE OF 300 MM (E)

Spray Flat jet nozzle Spray Full cone nozzle Spray Hollow cone nozzle Angle Angle Angle

15deg 0300 15deg 0110 25deg 0180 35deg 0130 30deg 0025 40deg 0120 50deg 0100 50deg 0010 65deg 0070 65deg 0004 60deg80deg 001002 80deg 0050 80deg 0002 100deg 0001

WhereQ is the flow rate at working pressure in lpmP is the pressure value in kgpcm2

[kgpcm2]TTI = 0024 Q P

SLI = E TTI

9

10

LIQU

ID S

PRAY

AND

SPRA

Y NO

ZZLE

SLIQUID SPRAY AND SPRAY NOZZLES Jet impact

31wwwpnr-nozzlescomCTG SH 07 EU

Jet impact diagram

A further parameter to characterize the performance of a spray nozzle is the distribution of the jet impact force which could be derived by means of mathematical methods from the values of the spray distribution onto the surface covered by the spray but which can more easily be measured with the help of specifically designed instrumentation

In some applications the jet impact force Is the most important parameter used to realize the required processSteel sheet descaling in a rolling mill is a typical example where the jet impact is required to take away the surface scale and obtain a perfectly even surfaceFor that reason special nozzles have been developed to perform this very task where service life impact value and spray distribution reach the values required for satisfactory resultThese test are performed in a laboratory equipped with a specifically designed instrumentation where the high pressures involved in these process can be reached which can measure the pressure values along a matrix of points distributed in the spray area covered by the nozzle

These values are supplied both in a table of values and as a 3D pressure diagram similar to those shown below

On such applications where producing high impact values in the jet is necessary it is of paramount importance that the liquid flow turbulence is kept to a minimum and therefore it is widely used to insert into the nozzle entrance devices designed to improve the operating conditions by forcing the liquid flow through straight passages with several different shapes by doing so the impact delivered by the spray is increased with the same feed pressure

One typical shape used by Pnr is shown on the right and the two dia-grams below show the impact force diagrams for the same nozzle with and without a flow straightener the reduction of flow turbulence can lead in increase of impact force often higher than 20Further improvements of course are available when the nozzle inside profile is properly designed in order to avoid sharp cross section changes and all surfaces are finished as smoothly as possible

Typical design of a Pnr flow straightener

Impact pressure diagram with flow straightenerImpact pressure diagram without flow straightener

LIQU

ID S

PRAY

AND

SPRA

Y NO

ZZLE

S

LIQUID SPRAY AND SPRAY NOZZLES Jet impact

32 wwwpnr-nozzlescom CTG SH 07 EU

LIQUID SPRAY AND SPRAY NOZZLES Pressure drop through a nozzle

Pressure drop through a nozzle

Some of our customers have asked us In the past which Is the pressure drop through a nozzle since they consider a nozzle one of the parts in a piping like a valve or an elbow which causes a given pressure drop along the line

The reality is different and can be easily understood when considering the Bernoulli formula [2] as given at page 19 of this manual the formula says that the total energy of a liquid flow is made from the addition of three facors

Potential energy due to elevationbullPressure energybullVelocity energybull

When we apply the formula at the entrance and at the outlet ( the orifice ) of a nozzle and we neglect the influence of turbulence losses in between we can easily see that

The potential energy variation can be neglected because of the limited dimensions of the nozzle since the distance bullbetween the nozzle entrance and the nozzle orifice plays no role-The pressure energy variation is important since the liquid pressure value falls abruptly from the pressure inside the feed bullpipe to the ambient pressureThe velocity energy variation is also consistent since the liquid is ejected from the orifice at high speedbull

In other words the pressure energy of the liquid flowing through the orifice is suddenly transformed in liquid drops velocity which is exactly what a nozzle is designed to do

This is shown from equation [3] at page 19 which allows the exit velocity from the nozzle to be calculated from the pressure inside the pipe ( we actually consider the pressure difference between the inside of the pipe and the ambient pressure in this formula )

In other words all the energy still available at the nozzle is converted into velocity or if you so prefer you have a total pressure fall The system designer shall therefore evaluate all the pressure drop between the pump outlet flange and the nozzle entrance in order to be sure that the nozzle feed pressure is sufficient to assure the desired capacity for the liquid being sprayed

parameters valuesat nozzle outlet

nozzle inlet nozzle oulet or orice

feed pressure

inlet velocity

parameters valuesat the nozzle inlet

(A)potential elevation

energy

(A)velocity ( kinetic ) energy

(A)pressure energy

ambient pressure

exit velocity

LIQU

ID S

PRAY

AND

SPRA

Y NO

ZZLE

S

33wwwpnr-nozzlescomCTG SH 07 EU

NOZ

ZLE

MAT

ERIA

LS

The choice of the right material for a nozzle is sometimes the most important one to do since the nozzle operating life depends upon it There are several factors to influence or shorten the nozzle operating life sometimes more than one at the same time the most important being

Wear from solid particles suspended into the liquid being sprayed1 Chemical corrosion from the liquid being sprayed 2 Chemical corrosion from the ambience outside the nozzle3 Exposure to high temperature 4 Exposure to mechanical shocks5

NOZZLE MATERIALSPnr material codes 34Properties of materials 35Mechanical properties of materials 39Chemical resistance of materials 40

NOZZLE MATERIALS

34 wwwpnr-nozzlescom CTG SH 07 EU

PNR has adopted a short code to identify construction materials for nozzles and nozzle partsHere below the most frequenty used materials

MATERIAL STANDARDS

The following standards are mentioned with reference to materials identification

NOZ

ZLE

MAT

ERIA

LS

A1 Free Cutting Steel E1 TEFLONreg (PTFE) L3 NICROFERreg 5923

A2 Carbon Steel E3 DELRINreg (POM) L4 STELLITEreg 6

A8 Zinc Plated Mild Steel E6 PERSPEXreg (PMMA) L5 HASTELLOYreg B2

A9 Nickel Plated Mild Steel E7 VITONreg (FPM) L6 HASTELLOYreg C4

B2 AISI 304 Stainless Steel E8 NBR- Sh 70 Rubber L61 HASTELLOYreg C22

B3 AISI 316 Stainless Steel E81 SANTOPRENEreg Rubber L62 ULTIMETreg

B31 AISI 316L Stainless Steel E82 KLINGERITEreg L7 NICKEL 201

B4 AISI 321 Stainless Steel E83 HYPALONreg L8 HASTELLOYreg C276

B8 AISI 309 Stainless Steel E91 Silicon L9 SANICROreg 28 SS

B81 AISI 310 Stainless Steel F12 Tungsten Carbide (TC) N1 AISI 302 Stainless Steel

C1 AISI 420 St Steel hardened F2 PIREXreg P6 ABS

C4 AISI 317 Stainless Steel F3 Rubin P7 FASIT OIL

C6 SAF 2205 Stainless Steel F4 Zapphire P8 EPDM ShA Rubber

D1 Polyvinylchloride (PVC) F5 Ceramic P9 STIROLUXreg 637

D2 Polypropylene (PP) F6 Silicon Carbide (SC) T1 Brass

D3 Polyamide (PA) G1 Cast Iron T3 Copper

D5 Powder Charged PP H1 Titanium T5 Bronze

D6 Fiberglass Charged PP L1 MONEL 400 T8 Nickel Plated Brass

D7 High Density Polyethylene L2 INCOLOYreg 825 V1 Aluminium

D8 Polyvinylidenefluoride (PVDF) L21 INCONELreg 600 V7 Aluminium ENP

STANDARD ORGANIZATION COUNTRY STANDARD CODE

AFNOR Association Franccedilaise de Normalisation France NF

AISI American Iron and Steel Institute USA AISI

ANSI American National Standards Institute USA ANSI

ASTM American Society for Testing and Materials USA ASTM

BSI British Standards Institution UK BS

DIN Deutsches Institut fuumlr Normung Germany DIN

DSIT Dansk StandardsInformation Technology Denmark DS

ISO International Organization for Standardization International ISO

JIS Japanese Institute for Standard Japan JIS

UNI Ente Nazionale di Unificazione Italy UNI

NOTEThe complete list of the Materials Codes may be requested to our Technical Service mentioning release code TGCE CODMAT

NOZZLE MATERIALS PNR material codes

35wwwpnr-nozzlescomCTG SH 07 EU

NOZ

ZLE

MAT

ERIA

LS

B1 AISI 303 STAINLESS STEEL

Chemical composition CR 1750 NI 850 S 025 Coding correspondence

Type Stainless Steel Austenitic AISI 303

Hardening Not possible BS 303 S 21

Annealing 1050 1100deg C in water DIN Wnr 14305

Welding Possible with precautions Euro X10CrNiS1809

Corrosion properties

Good resistance Atmospheric exposure food substances organic chemicalsLow resistance Chlorides reducing acids and over 800deg C

JIS SUS 303

NF Z6CN 18-09

SIS 2346

UNI XWCrNiS 1809

B3 AISI 316 STAINLESS STEEL

Chemical composition C 005 CR 170 NI 120 MO 225 Coding correspondence

Type Stainless Steel Austenitic AISI 316

Hardening Not possible BS 316 S 21

Annealing 1050 1100deg C in water DIN Wnr 14401

Welding Easy using same steel electrodes Euro X6CrNiMo17122

Corrosion properties

Good resistance Atmosphere great number of salts organic acids foodsLow resistance Solutions of reducing acids temperatures over 500deg C

JIS SUS 316

NF Z6CND 17-11

SIS 2347

UNI X5CrNiMo1712

B31 AISI 316L STAINLESS STEEL

Chemical composition C 003 CR 170 NI 130 MO 225 Coding correspondence

Type Stainless Steel Austenitic AISI 316 L

Hardening Not possible BS 316S12

Annealing 1050 1100deg C in water DIN Wnr 14404

Welding Easy using same steel electrodes Euro X3CrNiMo1810

Corrosion properties

Good resistance Atmosphere great number of salts organic acids foods salt waterLow resistance Solutions of reducing acids temperatures over 500deg C

JIS SUS 316L

NF Z2CND17-12

SIS 2348

UNI X2CrNiMo 1712

NOZZLE MATERIALS Properties of materials

36 wwwpnr-nozzlescom CTG SH 07 EU

C1 AISI 420 STAINLESS STEEL

Chemical composition C 020 CR 1300 Coding correspondence

Type Stainless Steel Martensitic AISI 420

Hardening 980deg - 1030deg C in oil BS 420 S 29

Annealing 750deg - 800deg C in air DIN Wnr 14021

Welding Possible with precautions Euro X20Cr13

Corrosion properties Good resistance Drinkable water steamgasoline oil alcohol ammonia

JIS SUS 420 J1

NF Z20C13

SIS 2303

UNI X20Cr13

C2 AISI 416 STAINLESS STEEL

Chemical composition C 012 CR 1250 S 022 Coding correspondence

Type Stainless Steel Martensitic AISI 416

Hardening 950deg - 1100deg C in oil BS 416 S 21

Annealing 750deg - 800deg C DIN Wnr ---

Welding Not possible Euro X120CrS13

Corrosion properties Good resistance Drinkable water steamgasoline oil alcohol ammonia

JIS SUS 416

NF Z12CF13

SIS ---

UNI X12CrS13

D8 POLYVINYLIDENE FLUORIDE (PVDF)

Description HIGH-MOLECULAR WEIGHT THE TOUGHEST OF THE FLUOROCARBON RESINS

Trade names amp SuppliersKYNAR (Atochem North America Inc formerly Penwalt Corporation)

SOLEF (Solvay Polymer Corporation)

Physical andMechanical Properties

Excellent resistance to abrasion and stress fatigue

Extremely pure opaque white resin

Thermal Properties UsefuI in temperatures ranging from -73 149degC (-100 300degF)Heat deflection temperature is (8090deg C at 182 Bars (176 194deg F at 264 psi)

Chemical Compatibility

Excellent chemical resistanceCan be used with wet or dry halogens most strong acids and bases aliphatics aromaticsalcohols and strong oxidizing agentsNot recommended for contact with ketones esters amines and some organic acids(fuming sulfuric acid)

NOZZLE MATERIALS Properties of materialsN

OZZL

E M

ATER

IALS

37wwwpnr-nozzlescomCTG SH 07 EU

E1 POLYTETRAFLUOROETHYLENE (PTFE)

Description FLUOROPLASTIC THAT HAVE SOME OR ALL OF THEIR HYDROGEN MOLECULESREPLACED BY FLUORINE

Trade names amp Suppliers

TEFLON TFE FEP and PFA (Dupont Polymer Products)

NEOFLON (Daikin)

FLUON (ICI Americas Inc)

SST-2SST-3 (Shamrock Technologies Inc)

Physical andMechanical Properties

Low coefficient

Low adhesiveness

Buona resistenza agli agenti atmosferici

Good weatherabilityLow resistance to creep and wear unless reinforced with glass figravebers which results in superior resistance

Thermal Properties High and low temperature stabilityHeat deflection temperatures range from 4855deg C at 182 bar (118-132deg F at 264 psi)

Chemical CompatibilityChemically inert

Totally insoluble

E3 ACETAL (ACETAL HOMOPOLYMERS AND COPOLYMERS)

Description HIGHLY CRYSTALLINE RESINS BASED ON FORMALDEHYDE POLYMERIZATION TECHNOLOGY

Trade names amp Suppliers

DELRIN (Dupont Polymer Products Corporation)

CELCON (Hoechst Celanese Corporation)

ULTRAFORM (BASF Corporation)

RTP 800 (RTP Corporation)

LUPITAL amp TENAL (Franklin Polymers Inc)

FULTRON 404 (ICI Americas Inc)

Physical andMechanical Properties

High tensile strength rigidity and esilience

High fatigue endurance

Excellent dimensional stability

Low coefficient of friction

Outstanding abrasion and wear resistance

Excellent creep resistance

Thermal Properties Heat deflection temperatures range from 110 -136deg C at 182 bars(230 - 270deg F at 264 psi) higher if glass figravelled

Chemical Compatibility

Remains stable in long-term high temperature water immersionExcellent resistance to chemicals and solvents but prolonged exposure to strong acids not recommendedNote Suitable for close-tolerance high-performance partsAvailable for machined parts or may be injection molded

NOZZLE MATERIALS Properties of materials

NOZ

ZLE

MAT

ERIA

LS

38 wwwpnr-nozzlescom CTG SH 07 EU

L6 HASTELLOY C4

PHYSICAL AND MECHANICAL PROPERTIES CHEMICAL COMPOSITION CORROSION RESISTANCE

R = 650800 Mpa C = 0015 max

Very good against pitting and tensile-corrosion specially in oxydizing atmosphereResistance in welded joints definitely better than C 276 lower than C22

Rp02 = 250470 Mpa Ni = 65

HRB = 90 Cr = 160

Mo = 155

W = --

Fe = 3 max

Ti = 05

Co = 2 max

APPLICATIONSRecommended for applications with strongly oxidizing atmosphere

L61 HASTELLOY C 22

PHYSICAL AND MECHANICAL PROPERTIES CHEMICAL COMPOSITION CORROSION RESISTANCE

R = 700800 Mpa C = 001 max

Excellent performances with oxydizing atmospheres as well as for pitting and tensile-corrosion conditionsVery good resistance in reducing atmospheres and for welded joints

Rp02 = 360420 Mpa Ni = 56

HRB = 93 Cr = 22

Mo = 13

W = 3

Fe = 3

Ti = --

Co = 25 max

APPLICATIONSChemical industry (gas ducts gas washing and treatment systems phosphoric acid production) Heat exchangers pumps chlorination reactors

L8 HASTELLOY C 276

PHYSICAL AND MECHANICAL PROPERTIES CHEMICAL COMPOSITION CORROSION RESISTANCE

R = 600800 Mpa C = 0015 max

Very good in reducing and oxydizing atmospheresVery good against pitting and tensile-corrosionAcceptable resistance in welded jointsIn cast parts excessive segregation not eliminated by thermal treatment of annealing makes it convenient to use C22 or C4 qualitieswhich assure better corrosion resistance and mechanical properties

Rp02 = 300370 Mpa Ni = 57

HRB = 90 Cr = 145165

Mo = 1517

W = frac345

Fe =

V = 035 max

Co = 25 max

APPLICATIONSChemical industry (air ducts scrubbers fans) Paper industry Thermoelectric plants Steel thermal treatments

NOZ

ZLE

MAT

ERIA

LSNOZZLE MATERIALS Properties of materials

39wwwpnr-nozzlescomCTG SH 07 EU

MATERIALTENSILE STRENGHT

CORROSION RESISTANCERp 02 R

20degC 800degC 20degC 800degC

(68degF) (1408degF) (68degC) (1408degC)

AISI 302 280 100 680 200

Good sensitive to corrosionbetween grains for slow heatingand cooling in the 450-900deg Crange temperature

AISI 303 280 100 680 200 Discrete

AISI 304304L 270 90 600 100Good especially for 304L304 sensitive to corrosionbetween grains like AISI 302

AISI 309 250 100 640 220 Good Sensitive to corrosion between grains like AISI 302

AISI 310 310 170 650 270Good (gt 304 - 304L)Sensitive to corrosionbetween grains like AISI 302

AISI 316316L 270 110 560 220 Very high especially for 316L

AISI 321 210 100 540 140 Good

AISI 347 280 120 620 200 Good

AISI 416 620 70 750 90

Good in medium corrosive ambient (atmosphere water gasoline alcohol N1-13 foods)Not in high corrosive

BRASS 110-150 --- 360-410 --- Good especially when nickel plated

BRONZE 100-300 --- 200-600 --- Discrete especially with sea water

CAST IRON le 500 V 100-800 V

NICKEL ALLOYS 100-1000 V 300-1300 VVery high also for high temperature To use in the temperaturerange 800-1200deg C

PLASTICS --- --- 20-200 ---

Good also for erosionGenerally they are attackedwith oxidizers like nitric acidhalogens ect

PTFE --- --- 30-40 ---

Very high except for elementarystate of alkaline metalsand to compounds containingfluorine at high temp

DUPLEX STEEL gtAISI 3 gtAISI 3 gtAISI 3 gtAISI 3 Very high also with high temperatureand also for pitting

TITANIUM alloy 195-850 V 300-900 VVery high in oxidizing ambientVery low in reducing ambient and with compounds containing fluorine

Legend Rp 02 = 02 YIELD STRENGHT [MPa]R = ULTIMATE TENSILE STRENGHT [MPa]V = To verify time by time

NOZZLE MATERIALS Mechanical properties of materials

NOZ

ZLE

MAT

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73wwwpnr-nozzlescomCTG SH 07 EU

PIPI

NG

PIPINGPipes data 74Economic pipe sizes 75Pressure drop in clean steel pipes 76Flange dimensions 78Sieve size conversion chart 80

PIPING

74 wwwpnr-nozzlescom CTG SH 07 EU

The following table report the data of pipes according to ANSI B3619 that is one of the most used standards that regulate welded stainless steel pipes

DN NPS OD[mm]

SCHEDULE

5S 10S 40SSTD 80SXS

t m t m t m t m

[mm] [kgm] [mm] [kgm] [mm] [kgm] [mm] [kgm]

6 18 103 NA NA 124 028 173 037 241 048

8 14 137 NA NA 165 050 224 064 302 081

10 38 172 NA NA 165 064 231 086 320 112

15 12 213 165 081 211 101 277 128 373 164

20 34 267 165 103 211 130 287 171 391 223

25 1 334 165 131 277 212 338 254 455 328

32 1frac14 422 165 167 277 273 356 344 485 453

40 1frac12 483 165 192 277 315 368 411 508 549

50 2 603 165 242 277 399 391 551 554 759

65 2frac12 730 211 374 305 534 516 875 701 116

80 3 889 211 458 305 655 549 115 762 155

90 3frac12 1016 211 525 305 752 574 138 808 189

100 4 1143 211 592 305 849 602 163 856 226

125 5 1413 277 960 340 117 655 221 953 314

150 6 1683 277 115 340 140 711 287 1097 432

200 8 2191 277 150 376 202 818 431 1270 656

250 10 2730 340 229 419 282 927 611 1270 827

300 12 3239 396 317 457 365 953 749 1270 988

350 14 3556 396 348 478 419 NA NA NA NA

400 16 4064 419 421 478 480 NA NA NA NA

450 18 457 419 474 478 541 NA NA NA NA

500 20 508 478 602 554 696 NA NA NA NA

550 22 559 478 662 554 767 NA NA NA NA

600 24 610 554 837 635 959 NA NA NA NA

Where

DN = Nominal diameter NPD = Nominal Pipe Size OD = Outside Diameter t = Wall Thickness m = Specific WeightPIPI

NG

PIPING Pipes data

75wwwpnr-nozzlescomCTG SH 07 EU

The following Specific Pressure Drops (Y) are normally used in the good engineering practice(where Y=ΔPL ΔP Pressur Drop and L Pipe Lenght)

For pipe sizing the Velocity (V) is also usedIn the following table are shown the typical liquid velocities in steel pipes

Some fixed pressure drop values indicationsfor gate valves (fully open) consider a pressure drop of 5 metersbullfor normal bends consider a pressure drop of 5 metersbullfor a check valve consider a pressure drop of 15 metersbull

In the succeeding tables we show the velocity and specific pressure drop for several flow rates and pipe diameters

Not boiling waterY = 02divide05 bar100 m for pump discharge (07 bar100 m max if P gt 50 bar)

Y lt 0110 bar100 m for pump suction

Boiling water Y = 004divide005 bar100 m for pump suction (velocity = 03divide09 ms)

LIQUID LINE TYPE

Specific Pressure Dropsvs Velocity [ms]

0 lt V lt 2 3 lt V lt 10 10 lt V lt 20

NOT BOILING WATER

Pump suctionPump discharge (long)Discharge leads (short)Boiler feedDrainsSloped sewer

03 divide 0606 divide 0912 divide 2712 divide 2709 divide 12

-

06 divide 1209 divide 1515 divide 3715 divide 3709 divide 1509 divide 15

09 divide 1812 divide 2124 divide 4224 divide 42

-12 divide 21

HYDROCARBON LIQUIDS(normal viscosity)

Pump suctionDischarge heather (long)Discharge leads (short)Drains

05 divide 0808 divide 1112 divide 2709 divide 12

06 divide 1209 divide 1515 divide 3709 divide 15

09 divide 1812 divide 2124 divide 46

-

MEDIUM VISCOSITY OILPump suctionDischarge (short)Drains

--

03

05 divide 0901 divide 0209 divide 15

08 divide 1501 divide 0312 divide 18

OTHER WATERCooling tower Chilled waterSea water and generally foulingwater (long pipes) ()

06 divide 09 09 divide 15 12 divide 21

Note () In this case Cameron method has to be used with C=1 Y = 005 divide 012 bar100 m for principal manifold Y = 012 divide 023 bar100 m for secondary manifold

PIPI

NG

PIPING Economic pipe sizes

76 wwwpnr-nozzlescom CTG SH 07 EU

18rdquo 14rdquo

1 0350 0370 0200 0090 38rdquo 12rdquo

2 0705 1340 0395 0331 0223 0082 0145 0029 34rdquo

3 1060 2890 0593 0673 0333 0176 0217 0061 0125 0016 1rdquo

4 1410 4940 0788 1150 0444 0291 0290 0101 0167 0027 0110 0010

5 1760 7460 0985 1750 0556 0424 0362 0149 0209 0040 0137 0014

6 1180 2460 0667 0594 0434 0207 0251 0054 0165 0019 114rdquo

8 1580 4060 0892 1020 0579 0351 0335 0091 0219 0033 0126 0009 112rdquo

10 1110 1530 0724 0534 0418 0136 0274 0049 0158 0012 0116 0006

15 1670 3250 1090 1130 0627 0284 0411 0099 0236 0026 0174 0012

20 2rdquo 2230 5600 1450 1900 0836 0481 0549 0168 0315 0043 0233 0021

30 0212 0013 212rdquo 2170 4130 1250 1020 0823 0353 0473 0092 0348 0043

40 0283 0022 0190 0007 2900 7180 1670 1760 1100 0606 0631 0155 0465 0073

50 0354 0032 0237 0012 2090 2700 1370 0911 0789 0233 0581 0108

60 0424 0044 0284 0017 2510 3810 1650 1290 0943 0321 0697 0150

70 0495 0079 0332 0022 3rdquo 2930 5120 1920 1720 111 0434 0814 0199

80 0566 0074 0379 0028 0248 0010 312rdquo 2190 2210 126 0554 0925 0253

90 0636 0093 0427 0035 0279 0013 0209 0006 2470 2770 142 0692 1040 0319

100 0707 0114 0474 0043 0310 0015 0232 0007 4rdquo 2740 3400 158 0843 1160 0392

150 1060 0238 0711 0090 0464 0031 0349 0016 0272 0008 4110 7440 236 181 1740 0828

200 1410 0414 0948 0153 0619 0053 0466 0027 0362 0014 315 314 2330 1450

250 1760 0625 1190 0233 0774 0080 0581 0040 0453 0021 5rdquo 2900 2200

300 2120 0889 1420 0324 0930 0112 0698 0055 0543 0030 0352 0011 3480 3070

350 2470 1190 1660 0438 1080 0150 0815 0074 0634 0040 0411 0014 6rdquo 4070 4160

400 2830 1550 1900 0563 1240 0195 0935 0096 0724 0051 0469 0018 0341 0007 4650 5380

450 3180 1930 2130 0707 1390 0242 1050 0120 0815 0063 0528 0022 0366 0009 5230 6790

500 3540 2380 2370 0867 1550 0298 1170 0147 0902 0076 0587 0027 0407 0011

550 3880 2870 2610 1040 1700 0354 1280 0174 0991 0092 0645 0032 0447 0013

600 4240 3390 2840 1220 1860 0418 1400 0204 1090 0110 0704 0037 0488 0015

650 4590 5560 3080 1420 2010 0486 1510 0239 1180 0127 0762 0043 0529 0017

700 4950 4550 3320 1650 2170 0560 1630 0275 1270 0146 0821 0050 0569 0020

750 5300 5200 3560 1880 2320 0637 1750 0314 1360 0164 0879 0057 0610 0023

800 3790 2130 2480 0721 1860 0354 1450 0185 0936 0064 0651 0025 8rdquo

850 4030 2390 2630 0805 1980 0395 1540 0209 1000 0072 0692 0028 0403 0007

900 2790 0901 2090 0438 1630 0232 1050 0008 0732 0032 0427 0008

950 2940 1000 2210 0486 1720 0258 1120 0087 0773 0036 0451 0010

1000 3100 1110 2320 0534 1810 0284 1170 0096 0814 0039 0474 0011

1100 3410 1290 2560 0643 1990 0341 1290 0116 0895 0047 0522 0012

1200 3720 1 580 2800 0763 2170 0403 1410 0135 0974 0055 0569 0015

1300 3030 0890 2360 0473 1530 0157 1060 0063 0616 0017

1400 3260 1020 2540 0544 1640 0183 1140 0072 0664 0019

1500 3490 1170 2720 0617 176 0208 1220 0083 0712 0022

1600 3720 1330 2890 0697 1880 0234 1300 0093 0758 0025

1700 10rdquo 3950 1490 3080 0784 1990 0260 1380 0104 0806 0028

1800 0546 0010 3260 0875 2110 0290 1470 0116 0854 0032

1900 0575 0012 3440 0965 2230 0323 1550 0129 0901 0034

2000 0606 0012 3617 1060 2340 0356 1630 0143 0946 0037

2200 0667 0015 3980 1280 2580 0429 1790 0172 1050 0045

2400 0727 0017 12rdquo 2820 0507 1950 0200 1140 0053

2600 0788 0021 0563 0009 3050 0589 2110 0234 1230 0061

2800 0848 0023 0606 0010 14rdquo 3280 0676 2280 0268 1330 0070

3000 0909 0026 0649 0011 0532 0007 3520 0773 2440 0306 1420 0080

3500 1060 0035 0760 0015 0620 0009 4110 105 2850 0416 1660 0108

4000 1210 0045 0866 0020 0709 0012 16rdquo 4690 135 3250 0532 1900 0139

4500 1360 0056 0976 0025 0798 0015 0606 0007 3660 0674 2130 0173

5000 1520 0069 1080 0029 0886 0018 0674 0009 4070 0822 2370 0212

6000 1810 0097 1290 0042 1070 0026 0808 0013 18rdquo 4880 1160 2850 0301

7000 2120 0130 1510 0055 1240 0035 0940 0017 0741 0010 5690 1580 3310 0403

8000 2420 0168 1730 0072 1420 0045 1080 0022 0847 0012 6510 2050 3790 0525

9000 2730 0210 1950 0091 1600 0056 1210 0027 0954 0015 4270 0659

10000 3030 0257 2170 0111 1770 0067 1350 0033 1050 0019 4740 0801

Legend Q Water Flow Rate (Lpm) V Velocity (ms) Y Specific Pressure Drops (bar100m)Water at ambient temperature in straight pipe

SPECIfIC PRESSURE DROPS fOR WATER fLOW IN CLEAN STEEL PIPE SCH 10S

Q V Y V Y V Y V Y V Y V Y V Y V Y [lm] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m]

PIPI

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77wwwpnr-nozzlescomCTG SH 07 EU

SPECIfIC PRESSURE DROPS fOR WATER fLOW IN CLEAN STEEL PIPE SCH 40S

Legend Q Water Flow Rate (Lpm) V Velocity (ms) Y Specific Pressure Drops (bar100m)Water at ambient temperature in straight pipe

18rdquo 14rdquo

1 0458 0726 0251 0170 38rdquo 12rdquo

2 0918 2590 0501 0600 0272 0136 0170 0044 34rdquo

3 1380 5590 0752 1220 0407 029 0255 0091 0144 0023 1rdquo

4 1840 9570 1000 2090 0543 048 0340 0151 0192 0038 0120 0012

5 2290 14450 1250 3180 0679 070 0425 0223 0241 0057 0150 0017

6 1500 4460 0815 0980 0510 0309 0289 0077 0180 0024 114rdquo

8 2010 7360 1090 1690 0680 0524 0385 0129 0240 0041 0138 0011 112rdquo

10 1360 2520 0850 0798 0481 0193 0300 0061 0172 0015 0127 0008

15 2040 5370 1280 1690 0722 0403 0450 0124 0258 0032 019 0015

20 2rdquo 2720 9240 1700 2840 0962 0683 0600 0210 0344 0054 0254 0026

30 0231 0016 212rdquo 2550 6170 1440 1450 0900 0442 0517 0114 038 0053

40 0308 0027 0216 0010 3400 10720 1920 2500 1200 0758 0689 0193 0507 0091

50 0385 0039 0270 0017 2410 3830 1500 1140 0861 029 0634 0135

60 0462 0055 0324 0023 2890 5410 1800 1610 103 0400 0761 0187

70 0539 0098 0378 0031 3rdquo 3370 7270 2100 2150 1210 0541 0888 0248

80 0616 0092 0432 0039 028 0014 312rdquo 2400 2760 1380 0690 1010 0315

90 0693 0115 0486 0048 0315 0017 0235 0008 2700 3470 1550 0862 1140 0397

100 0770 0141 0540 0059 035 002 0261 0010 4rdquo 3000 4250 1720 1050 1270 0488

150 1150 0295 0810 0125 0524 0042 0392 0021 0304 0011 4500 9300 2580 2260 1900 1030

200 1540 0512 1080 0212 0699 0072 0523 0036 0405 0019 3440 3910 2540 1810

250 1920 0773 1350 0322 0874 0108 0653 0053 0507 0028 5rdquo 3170 2740

300 2310 1100 1620 0449 105 0152 0784 0074 0608 004 0387 0014 3800 3820

350 2690 1470 1890 0606 122 0203 0915 0099 0710 0053 0452 0018 6rdquo 4440 5180

400 3080 1920 2160 0780 14 0264 1050 0128 0811 0068 0516 0023 0375 0009 5070 6690

450 3460 2390 2430 0979 157 0328 1180 0161 0912 0084 0581 0028 0402 0012 5710 8450

500 3850 2950 2700 1200 175 0403 1310 0196 1010 0101 0646 0034 0447 0014

550 4230 3550 2970 1440 192 0479 1440 0232 1110 0122 0710 0041 0491 0016

600 4620 4200 3240 1690 2100 0566 1570 0273 1220 0146 0775 0047 0536 0019

650 5000 6880 3510 1970 2270 0658 1700 0319 1320 0169 0839 0055 0581 0022

700 5390 5630 3780 2280 2450 0759 1830 0368 1420 0194 0904 0063 0625 0025

750 577 6440 4050 2600 2620 0863 1960 042 1520 0218 0968 0072 067 0029

800 4320 2950 2800 0977 2090 0473 1620 0246 1030 0081 0715 0032 8rdquo

850 4590 3310 2970 1090 2220 0528 1720 0277 1100 0091 076 0036 0439 0009

900 3150 1220 2350 0585 1820 0308 1160 0100 0804 0041 0465 001

950 3320 1350 248 0649 1930 0342 1230 0111 0849 0045 0491 0012

1000 3500 1500 261 0714 2030 0377 1290 0122 0894 0049 0516 0013

1100 3850 1750 2870 0860 2230 0452 1420 0147 0983 0059 0568 0015

1200 4200 2140 3140 1020 2430 0534 1550 0172 1070 0069 0620 0018

1300 3400 1190 2640 0627 1680 0200 1160 008 0671 0021

1400 3660 1370 2840 0722 1810 0232 1250 0091 0723 0024

1500 3920 1560 3040 0818 1940 0264 1340 0105 0775 0027

1600 4180 1780 3240 0924 2070 0297 1430 0118 0826 0031

1700 10rdquo 4440 1990 3450 1040 2190 0331 1520 0132 0878 0035

1800 0590 0012 3650 1160 2320 0369 1610 0147 0930 0039

1900 0622 0014 3850 1280 2450 041 1700 0163 0981 0042

2000 0655 0015 40500 1410 2580 0452 1790 0181 1030 0046

2200 0721 0018 4460 1700 2840 0545 1970 0217 1140 0056

2400 0786 0021 12rdquo 3100 0645 2140 0253 1240 0065

2600 0852 0025 0600 001 3360 0749 2320 0296 1340 0076

2800 0917 0028 0646 0012 14rdquo 3610 0859 2500 0339 1450 0087

3000 0983 0032 0692 0013 0573 0008 3870 0982 268 0387 1550 0099

3500 1150 0043 0810 0018 0668 0011 4520 1330 3130 0526 1810 0134

4000 1310 0055 0923 0023 0764 0014 16rdquo 5160 1720 3570 0673 2070 0172

4500 1470 0068 1040 0029 0860 0018 0658 0009 4020 0853 2320 0214

5000 1640 0084 1150 0034 0955 0022 0731 0011 4470 1040 2580 0262

6000 1960 0118 1380 0049 1150 0031 0877 0016 18rdquo 5360 1470 3100 0373

7000 2290 0158 1610 0065 1340 0042 1020 0021 0808 0012 6250 2000 3610 0499

8000 2620 0204 1840 0085 1530 0054 1170 0027 0924 0015 7150 2590 4130 065

9000 2950 0256 2080 0107 1720 0067 1310 0033 1040 0019 4650 0816

10000 3280 0313 2310 0130 1910 0081 1460 0041 1150 0023 5160 0992

Q V Y V P V Y V Y V Y V Y V Y V Y [lm] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m]

PIPI

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78 wwwpnr-nozzlescom CTG SH 07 EU

10 75 12 038 4 11 50

15 80 12 044 4 11 55

20 90 14 065 4 11 65

25 100 14 082 4 11 75

32 120 14 117 4 14 90

40 130 14 139 4 14 100

50 140 14 162 4 14 110

65 160 14 214 4 14 130

80 190 16 343 4 18 150

100 210 16 422 4 18 170

125 240 18 611 8 18 200

150 265 18 751 8 18 225

175 295 20 1020 8 18 255

200 320 20 1230 8 18 280

250 375 22 1850 12 18 335

300 440 22 2550 12 22 395

350 490 22 3180 12 22 445

400 540 22 3850 16 22 495

450 595 22 4700 16 22 550

500 645 24 6040 20 22 600

PN 6 (UNI 6091)

ND 6 (DIN 2527) DN Flange Holes

D t W N Oslash a

90 14 063 4 14 60

95 14 071 4 14 65

105 16 101 4 14 75

115 16 122 4 14 85

140 16 180 4 18 100

150 16 209 4 18 110

165 18 287 4 18 125

185 18 365 4 18 145

200 20 461 8 18 160

220 20 565 8 18 180

250 22 812 8 18 210

285 22 1050 8 22 240

315 24 1410 8 22 270

340 24 1620 12 22 295

405 28 2510 12 25 355

460 28 3520 12 25 410

520 30 4820 16 25 470

580 32 6350 16 30 525

640 32 7720 20 30 585

715 34 1020 20 33 650

PN 16 (UNI 6093)

ND 16 (DIN 2527) Dimensions Holes

D t W N Oslash a

ND 10 (DIN 2527) Dimensions Holes

D t W N Oslash a

90 14 063 4 14 60

95 14 071 4 14 65

105 16 101 4 14 75

115 16 122 4 14 85

140 16 180 4 18 100

150 16 209 4 18 110

165 18 287 4 18 125

185 18 365 4 18 145

200 20 461 4 18 160

220 20 565 8 18 180

250 22 812 8 18 210

285 22 1050 8 22 240

315 24 1410 8 22 270

340 24 1650 8 22 295

395 26 2410 12 22 350

445 26 3080 12 22 400

505 26 3960 16 22 460

565 26 4960 16 25 515

615 26 5860 20 25 565

670 28 7530 20 25 620

PN 10 (UNI 6092)

LegendaDN Nominal DiameterD Flange External Diametert Flange ThicknessW Flange WeightN Hole NumberOslash Hole Diametera Hole axis

PIPING Flange dimensionsPI

PIN

G

Blind flanges to DIN 2527

79wwwpnr-nozzlescomCTG SH 07 EU

LegendDN Nominal DiameterD Flange External Diametert Flange ThicknessW Flange WeightN Hole NumberOslash Hole Diametera Hole axis

12rsquorsquo 889 111 08 4 159 603

34rsquorsquo 984 127 09 6 159 698

1rsquorsquo 1079 143 10 4 159 794

114rsquorsquo 1175 159 13 4 159 889

112rsquorsquo 1270 175 14 4 159 984

2rsquorsquo 1524 190 18 4 190 1206

212rsquorsquo 1778 222 32 4 190 1397

3rsquorsquo 1905 238 41 4 190 1524

312rsquorsquo 2159 238 59 8 190 1778

4rsquorsquo 2286 238 77 8 190 1905

5rsquorsquo 2540 238 91 8 222 2159

6rsquorsquo 2794 254 118 8 222 2413

8rsquorsquo 3429 286 204 8 222 2984

10rsquorsquo 4064 302 318 12 254 3619

12rsquorsquo 4826 317 500 12 254 4318

14rsquorsquo 5334 349 600 12 286 4762

16rsquorsquo 5969 365 770 16 286 5397

18rsquorsquo 6350 397 950 16 317 5778

20rsquorsquo 6985 429 1230 20 317 6350

22rsquorsquo 7493 460 1510 20 349 6921

ANSI 150 lb DN Flange Holes

D t W N Oslash a

952 143 10 4 159 667

1175 159 14 4 190 825

1238 175 18 4 190 889

1333 206 27 4 190 984

1556 222 36 4 222 1143

1651 254 45 8 190 1270

190S 286 68 8 222 1492

209S 317 91 8 222 1683

2286 349 132 8 254 1841

2540 349 150 8 254 2000

2794 381 200 8 254 2349

3175 413 277 12 254 2699

3810 476 450 12 286 3302

4445 540 700 16 317 3873

5207 571 103 16 349 4508

5842 603 141 20 349 5143

6477 635 181 20 381 5715

7112 667 228 24 381 6286

7747 698 282 24 413 6858

8382 730 311 24 444 7429

ANSI 400 lb Dimensions Holes

D t W N Oslash a

ANSI 300 lb Dimensions Holes

D t W N Oslash a

952 143 10 4 159 667

1175 159 14 4 190 825

1238 175 18 4 190 889

1333 190 27 4 190 984

1556 206 32 4 220 1143

1651 222 36 8 190 1270

1905 254 54 8 222 1492

2095 286 73 8 222 1683

2286 302 95 8 222 1841

2540 317 122 8 222 2000

2794 349 159 8 222 2349

3175 365 227 12 222 2699

3810 413 370 12 254 3302

4445 476 580 16 286 3873

5207 508 840 16 317 4508

5842 540 1070 20 317 5143

6477 571 1390 20 349 5715

7112 603 3900 24 349 6286

7747 635 2230 24 349 6858

8382 667 2700 24 413 7429

PIPING Flange dimensions

PIPI

NG

flanges to ANSI norms

80 wwwpnr-nozzlescom CTG SH 07 EU

PIPI

NG

Sieves are used both for determining the particle size distribution of a granular material and to filter solid particles in a liquid Normally the sieve is made with a fabric whose characteristic dimensions areL is the Opening Width (free passage)D is the Diameter of the wireP is the Pitch of the wireS is the Thickness of the fabricTo classify particle sizes there is some Sieve Series according to specific standardsthe most known are Tyler Sieve Series US Sieve Series UK Sieve SerieshellipThe Tyler mesh size indicates exactly the number of openings per linear inch of mesh

L[microm]

TYLER Sieve[Mesh No]

ASTM E11 Sieve[Mesh No]

BS 410 Sieve[Mesh No]

DIN 4188 Sieve[mm]

5 2500 2500 0005

10 1250 1250 0010

15 800 800 0015

20 625 635 625 0020

22 0022

25 500 500 500 0025

28 0028

32 na 450 440 0032

36 0036

38 400 400 400

40 0040

45 325 325 350 0045

50 0050

53 270 270 300

56 0056

63 250 230 240 0063

71 0071

75 200 200 200

80 0080

90 170 170 170 0090

100 0100

106 150 140 150

112 0112

125 115 120 120 0125

140 0140

150 100 100 100

160 0160

180 80 80 85 0180

200 0200

In the german standard (DIN norm 4188) the Opening Width (L) is given in millimeters

PIPING Sieve size conversion chartPI

PIN

G

81wwwpnr-nozzlescomCTG SH 07 EU

L[microm]

TYLER Sieve[Mesh No]

ASTM E11 Sieve[Mesh No]

BS 410 Sieve[Mesh No]

DIN 4188 Sieve[mm]

212 65 70 72

250 60 60 60 0250

280 0280

300 48 50 52

315 0315

355 42 45 44 0355

400 0400

425 35 40 36

450 0450

500 32 35 30 0500

560 0560

600 28 30 25

630 0630

710 24 25 22 0710

800 0800

850 20 20 18

900 0900

1000 16 18 16 1000

1120 1120

1180 14 16 14

1250 1250

1400 12 14 12 1400

1600 1600

1700 10 12 10

1800 1800

2000 9 10 8 2000

2240 2240

2360 8 8 7

2500 2500

2800 7 7 6 2800

3150 3150

3350 6 6 5

3550 3550

4000 5 5 4 4000

4500 4500

4750 4 4 35

5000 5000

5600 35 35 3

6700 3 0265 in 1

8000 25 516 in na

Applicable standards areISO 565 (1987) ISO 3310 (1999) ASTM E 11-70 (1995)DIN 4188 (1977) BS 410 (1986) AFNOR NFX11-501 (1987)

Legend Q Water Flow Rate V Velocity P Pressure drop Pressure drop in bar per 100 meters of straight pipe (water at ambient temperature)

PIPING Sieve size conversion chart

PIPI

NG

Besides its main range of nozzles for industrial applications PNR manufactures a wide range of complementary products and systems to optimize the use of spray jets and fluids control in most of the modern industrial processes

PNR PRODUCT RANGE

CTG AC

CTG LS

CTG UG

CTG AZ

Complementary Products andAssembly FittingsA complete line of nipples clamps swivel joints and everything that helps you to assemble align and service your spraying systems quickly and easilyAir blowers mixing eductors filters clean-ing guns and lances hose reels steam heaters pressure tanks quick couplings to help you build up a professional system upgraded to the latest standards

Tank washing systemsA complete range from simple fixed washing heads to the two-axis heads from mushroom nozzles to fluid driven reaction heads up to the motor driven washing heads equipped with a pneu-matic or electric motorAll for the inside cleaning of industrial tanks according to the latest technology accessories included

Spray nozzles for industrial applicationsOne of the world most complete lines of nozzles for numberless industrial appli-cations Nozzles with a wide openings range various types of vanes several spray patterns anti-clog design available in small and big dimensions and made in many food-grade materials like PFTE and Stainless Steel 316L with threaded and flanged connections

Air assisted atomizersUltrasonic classic and automatic atomiz-ers for the finest atomization in any insus-trial process High quality machining and strict quality control ensure your systems top professional resultsProgramming and control panels for an easy assembly of complete humidification systems

CTG SP

CTG PM

CTG SW

CTG LN

Spraydry nozzlesAir assisted or hydraulic high pressure ato-mizers made in high-quality metal alloys or tungsten carbideA complete line of nozzles for the moder-nization of existing facilities at competitive prices To ensure highly accurate results and a long service life these nozzles are manufactured with the finest materials and technologically advanced machines

Paper mill productsA line of products specifically designed for perfect results on paper mill machines including disc nozzles patented for self-cleaning filters flat jet nozzles with orifices in sapphire ruby and ceramic oscillating tubes equipped with a computer driven motor

Steelwork nozzlesA complete line of nozzles for steelwork applications including continuous casting air atomizers and conventional nozzles descaling nozzles for high pressure sys-tems dovetail tips for cylinders cooling and high capacity flanged nozzles for coke quenching

Gas cooling lancesSpillback or air assited lances for gas coo-ling in steelworks cement plants and other industrial applicationsWe can supply spare parts upgrade your plant and even supply a complete PLC driven system to enhance the towers per-formances to the highest efficiency level allowed by today technology

wwwpnr-nozzlescomCTG SH 07 EU

CTG SH 07 EUwwwpnr-nozzlescom

STAM

PATO

IN E

U 09

09

copy B

ellamp

Tany

Our products are distributed through

We are also represented in

PNR AmericaPNR Asia

PNR BalticPNR Benelux

PNR ChinaPNR Czech Republic

PNR DeutschlandPNR France

PNR ItaliaPNR Mexico

PNR UK

ArgentinaAustraliaAustriaBrazil

BulgariaCanada

ChileCroatia

DenmarkFinlandGreece

IndiaIndonesia

IranIrelandKorea

MalaysiaNorway

New ZealandPakistan

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Portugal

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SwedenTaiwanTurkey

Venezuela

Page 19: SPRAY CTG SH 07 EU ENGINEERING HANDBOOK

19wwwpnr-nozzlescomCTG SH 07 EU

In order to calculate the discharge flow rate from a given nozzle the Bernoulli law shall be used which says that the energy of a liquid flow remains unchanged over alI the sections of the flow Friction and turbu-lence losses are neglected which is reasonable for our purposes if the cal-culation is performed over two sections not too far away from each other

The Bernoulli law can be written as follows

Therefore if we consider two sections of the same pipe section A and section B we can write that the flow energy remains constant in the form

If we finally consider that the two above sections are taken immediately before and immediately after the nozzle outlet orifice being

ZA = ZB PB = 0 (PA is a differential pressure referred at the atmosphere pressure)

VA cong 0 negligible as compared to VB (for orifice diameter much smaller than the duct diameter)

we shall come to the formula

When we define a new constant k to include the value of the nozzle orifice outlet area (A) then we come to the following equation which says that for a nozzle spraying into a room at ambient pressure the exiting flow is proportional to the feed line pressure

Considering now two different pressure values for the same nozzle since k is a constant quantity we can write that

and derive from the above an equation that makes it possible to calculate the nozzle flow value at any given pressure value once the flow value at another pressure value is known

The energy of a given liquid flow crossing a given pipe section is composed of three parts namely

P Pressure energy of liquid particle per volume unit

1 ρV2 Kinetic energy of liquid particle per volume unit2ρgz Potential Energy of liquid particle per volume unit

Where ρ = density of liquid g = gravitational acceleration

z = height respect to one plane of reference V = liquid velocity

PA = 1 ρVB 2 rArr

2

K = Q rArr

PK =

Q1 = Q2 rArr

P1 P2

Q = A V rArr

Q = A x C x P rArr

1 P + 1 ρV2 + ρgz = E

2

VB = 2 PA rArr ρ

Q1 = P1

Q2 P2

3 V = C P

4 Q = K P

2 PA + 1 ρVA 2 + ρgzA = PB + 1 ρVB

2 + ρgzB 2 2

EXIT VELOCITY DEPENDS UPON PRESSURE

NOZZLE CAPACITY DEPENDS UPON PRESSURE

NOZZLE CAPACITYAT A DIFFERENT PRESSURE

5 Q2 = Q1 P2

P1

LIQU

ID S

PRAY

AND

SPRA

Y NO

ZZLE

S

LIQUID SPRAY AND SPRAY NOZZLES Nozzle flow rate

20 wwwpnr-nozzlescom CTG SH 07 EU

LIQU

ID S

PRAY

AND

SPRA

Y NO

ZZLE

SLIQUID SPRAY AND SPRAY NOZZLES Nozzle flow rate

The Equation (5) has been obtained after having simplified the real problem neglecting several factors like for examplebullInmostofthepracticalapplicationcasestheflowisturbulentandnotlaminarbullFrictionlossestendtostronglyincreasewithliquidvelocitybullDependinguponthetypeofnozzleadifferentpercentageoftheavailableenergyisusedtobreakupthejetandgivethe

desired spray pattern and spray angle

For the above reason equation (5) gives reliable results if used in a limited pressure range around the pressure value where the flow rate is known with this pressure range depending upon the type of nozzleOur experience has shown that one can expect the error in the calculated value to be lower than +- 6 for pressure values ranging from 13 to 3 times the reference value

As an example a nozzle rated for 10 lpm at 3 bars would have according to equation (5) the following flow valuesa 1 bar 577 lpma 9 bar 173 lpmin real conditions it can be expected the flow rate values to beas high as 61 lpm a 1 baras low as 162 lpm a 9 barAbove considerations are to be used as a guideline only because of the many factors influencing real operations which have not been considered here for example liquid temperature viscosity and density

Possible percentage deviation from theoretical flow rate values

Also above mentioned percentage errors have to be understood for nozzles using part of the flow energy to produce wide angle spray patternsLower values can be expected for narrow angle nozzles impact nozzles and straight jet nozzles Laboratory tests and diagrams showing real flow rate values for each nozzles are used in practice when a precise result must be available

Nozzle discharge coefficient

With reference to equation (4) if we consider the pressure value to be equal to 1 (P = 1 bar) the flow rate of the nozzle becomes

K is a parameter widely used in the fire fighting industry

In some instances reference is made to the nozzle discharge coefficient or shortly to the nozzle coefficient to indicate the nozzle flow rate for a unitary pressure Of course for a given pressure value Pn the flow value will be

+ 6

+ 3

- 3

- 6

CAPACITY AT A GIVEN PRESSURE VALUEWHEN K KHOWN

NOZZLE CAPACITYFOR P=1 barQ = K P = K 1 = K

6 Qn = K Pn

21wwwpnr-nozzlescomCTG SH 07 EU

The spray angle is the opening angle which the nozzle jet of droplets forms at the moment when it leaves the nozzle orifice and it is one of the fundamental parameters for the choice of a given nozzleIn fact the amplitude of the spray angle determines in connection with the distance between the nozzle orifice and the target to be covered the spray coverage and the density of liquid sprayed with respect to the cover area See our Catalogue for description of the different nozzle spray patterns The table at the bottom of the page gives the theoretical spray width based on the nozzle spray angle and the distance from the nozzle orifice It is important to note that because of several factors like gravity forces and aerodynamic drag the spray angle value cannot be maintained but in in a limited distance normally up to 300 mm from the orifice For air assisted atomizers it is improper to use the term spray angle since no precise value can be measured Therefore the values given by Catalogues are to be intended as guidelines only

THEORETICAL SPRAY COVERAGE

at various distances from nozzle orifice

Spray 50 100 150 200 250 300 400 500 600 700 800 1000 Angle mm mm mm mm mm mm mm mm mm mm mm mm

15deg 13 26 40 53 66 79 105 132 158 184 211 263 25deg 22 44 67 89 111 133 177 222 266 310 355 443 30deg 27 54 80 107 134 161 214 268 322 375 429 536 35deg 32 63 95 126 158 189 252 315 378 441 505 631 40deg 36 73 109 146 182 218 291 364 437 510 582 728 45deg 41 83 124 166 207 249 331 414 497 580 663 828 50deg 47 93 140 187 233 280 373 466 560 653 746 933 60deg 58 116 173 231 289 346 462 577 693 808 924 1150 65deg 64 127 191 255 319 382 510 637 765 892 1020 1270 70deg 70 140 210 280 350 420 560 700 840 980 1120 1400 75deg 77 154 230 307 384 460 614 767 921 1070 1230 1530 80deg 84 168 252 336 420 504 671 839 1010 1180 1340 1680 90deg 100 200 300 400 500 600 800 1000 1200 1400 1600 2000 95deg 109 218 327 437 546 655 873 1090 1310 1530 1750 2180 100deg 119 238 358 477 596 715 953 1190 1430 1670 1910 2380 110deg 143 286 429 571 714 857 1140 1430 1710 2000 2290 2856 120deg 173 346 520 693 866 1040 1390 1730 2080 2430 2771 3464 130deg 215 429 643 858 1070 1290 1720 2150 2570 3002 3431 4289

WhereASCbull = Actual Spray CoverageTSCbull = Theoretical Spray CoverageASAbull = Actual Spray AngleTSAbull = Theoretical Spray AngleL bull = Spray Distances

TSC = 2 middot L middot ctan ( TSA )2

7

LIQU

ID S

PRAY

AND

SPRA

Y NO

ZZLE

S

LIQUID SPRAY AND SPRAY NOZZLES Spray angle

22 wwwpnr-nozzlescom CTG SH 07 EU

LIQU

ID S

PRAY

AND

SPRA

Y NO

ZZLE

SLIQUID SPRAY AND SPRAY NOZZLES Spray angle

Depending upon the nozzle design variations of feed pressure may have a great influence on the spray angle valueGenerally with increasing pressure turbulence full cone nozzles will produce narrower angles flat jet nozzles will show a wider angle spray while nozzles working on the deflection principle like spiral nozzles and K style flat jet nozzles will be less affected by pressure changesAll nozzles will not function properly with very low pressure values (from 05 bar down depending upon nozzle type ) with a marked decay in performance larger drops not well defined spray pattern lower spray angle values

The above pictures show spray angles for different nozzles and different pressure valuesShould your application strictly require that a given value of the spray angle is obtained under a given pressure value or pressure range of values please obtain a test report from our laboratories

Full cone nozze DDW 2235

Flat jet nozzleJCW 2245

Spiral nozzeECW 2230

Pressure 05 bar Pressure 05 bar Pressure 05 bar

Pressure 3 bar Pressure 3 bar Pressure 3 bar

Pressure 10 bar Pressure 10 bar Pressure 10 bar

Photo obtained with 120000s flashlight

picture 1

picture 4

picture 7

picture 2

picture 5

picture 8

picture 3

picture 6

picture 9

NotePicture 2 shows clearly the droplet generation mechanism as described at page 15

23wwwpnr-nozzlescomCTG SH 07 EU

Terms and definitions

A very important characteristic of a spray nozzle is a parameter called Spray Distribution which gives a precise information about how evenly the drops of the spray are distributed onto the area covered by the sprayIt is self understood that normally it is preferable to obtain the most even distribution possibleIn the past this was done through the visual examination of a diagram reporting the quantity of water contained for example in glass pipes aligned onto the spray coverage areaPnr has determined to obtain such a result in a scientific way through high technology instrumentation as shown in the pictures below showing one of our patternators and a typical distribution diagram

Now to the spray geometry and some definition letrsquos consider a nozzle with a capa-city Q at the pressure PAt every value for distance H which we call height of spray we can define a plane lsquonrsquo normal to the nozzle axis on which a line can define the intersection of the spray onto the planeThe area covered by the spray on the plane lsquonrsquo has a surface S depending from the following parametersa) Spray pattern Fb) Opening angle of the spray αc) Height of the spray H

We can then write S=S( F α H )

In case of a full cone nozzle S is a circle with diameter C and S = 0785 C2

The capacity of the nozzle flows through the surface S but each smaller area inside the surface S will probably have a different value for the flow passing through itWe introduce then the value of Specific Capacity q

1) Specific Capacity

The function q depends upon the single point (xy) in the section S and then

Determining the function q is however very expensive therefore in practice two different functions are used which give in most occurrences sufficient information

2) Linear Distribution

3) Angular distribution

part Qpart x

qx =

Diagram 1

q = limΔS 0

ΔQΔS

q = = f (x y H)part Qpart S

part Qpart φ

qφ =

ΔQ is the liquid flowing through a surface ΔSwhere ΔS is a fraction of the surface S

x and y are the local coordinates in the section planewhere H is the distance of the test surface from the nozzle orifice

partQ is the variation in capacitywhere partx is the variation of a generic linear coordinate

partQ is the variation in capacitywhere partφ is the variation of a generic angular coordinate

LIQU

ID S

PRAY

AND

SPRA

Y NO

ZZLE

S

LIQUID SPRAY AND SPRAY NOZZLES Spray Distribution

24 wwwpnr-nozzlescom CTG SH 07 EU

LIQUID SPRAY AND SPRAY NOZZLES Spray Distribution

Values extracted from these functions can characterize the spray and allow for drawing the diagrams defined as Distribution Curves

Analyzing the above curves it is possible to determine the type of water distribution along the spray coverage and the type of spray pattern like for example a full cone hollow cone flat or straight jet spray

Distribution measurement

The water distribution along the spray coverage is determined by means of an instrument called Patternator

A patternator consists of the following parts 1) Liquid collector2) Cell block3) Measure block4) Unloading block

The nozzle is above the instrument and it is orienta-ted in such a way the jet is collected into the upper liquid collectorThe liquid collector can be linear ( diagram 5 ) or round ( diagram 6 ) according to the test being runFrom the single parts in the collector the liquid is sent into the corresponding cells below (2)

The Measure block (3) determines the liquid content in each single cell then the unloading block (4) empties the instrument sending the liquid to the collection drain

There are two types of patternators

Analogic1 the different levels of liquid is visible through the transparent walls of the cells or pipes sometimes containing some kind of floating balls and a picture can be taken with a cameraDigital2 Delivering an automatic reading of the values in the cells the values being supplied as an electronic file from which a distribution curve can be easily obtained

Diagram 2 Linear distribution Diagram 3 Angular distribution

Diagram 4

Diagram 6 Circular collectorDiagram 5 Linear collector

LIQU

ID S

PRAY

AND

SPRA

Y NO

ZZLE

S

25wwwpnr-nozzlescomCTG SH 07 EU

LIQUID SPRAY AND SPRAY NOZZLES Spray Distribution

Normalizing distribution curve

The values obtained from the cells of the patternator showing the water quantity collected in the single cells allow for preparing a Distribution curve which can be given as a single line curve or as a row of vertical barsThese resemble the liquid level collected into the glass pipes of the old type instrumentation

The curves prepared based on the liquid level in the single cells still are not precise they depend in fact from the testing time the longer this time the larger the liquid quantity sprayedTo eliminate the influence of time from the test it is necessary to transform the effective curves to normalized curves

Normalized4) linear distribution

Normalized5) angular distribution

Please note that Maximum value is the one belonging to the series of values measured in the cellsIn addition to the distribution it is possible to normalize the intervals to with the following formulas

Normalized 6) linear interval

Normalized 7) angular interval

The linear normalized amplitude is defined inside an interval [-1 +1]The angular normalized amplitude is defined inside an interval [0+2π]

Diagram 7 Effective linear distribution curve Diagram 8 Effective angular distribution curve

Mx

xx q

q=δ

N

πθ

2=Δ

Diagram 9 Normalized linear distribution curve Diagram 10 Normalized angular distribution curve

qx is the linear distribution of a generic cellwhere qx

M is the maximum linear distribution measured

qφ is the linear distribution of a generic cellwhere qφ

M is the maximum linear distribution measured

2 is the normalized linear amplitude of the spraywhere N is the number of active cells (active cells = cells containing liquid)

2π is the normalized angular amplitude of the spraywhere N is the number of active cells (active cells = cells containing liquid)

Mq

q

ϕ

ϕϕδ =φ

φ

φ

2

N=Δλ

2

N=Δλ

LIQU

ID S

PRAY

AND

SPRA

Y NO

ZZLE

S

26 wwwpnr-nozzlescom CTG SH 07 EU

Evaluation of spray distribution

To evaluate distribution curves it is necessary to take three properties into consideration

a) UNIFORMITY b) MONOTONY c) SIMMETRY

As described in the following diagrams and definitions

a) UNIFORM A distribution that minimizes the ratio AAdeg

b) MONOTONE Is a distribution with a curve which grows on the left side and decreases on the left side c) SYMMETRIC Is a distribution which minimizes the Ratio A+A-

Based on the above definitions the following curves show the ideal situations

The three properties are then evaluated by means of the following parameters

1 Integral uniformity

2 Incremental uniformity

3 Symmetry index

Complete details about the above formulas and definition can be found in our Technical Bulletin REL 080002 which shall be released from our Technical Department on request

Diagram 12Normalized and monotone distribution

Diagram 11Normalized and monotone distribution

Diagram 14Ideal monotony

Diagram 15Ideal symmetry

Diagram 13Ideal uniformity

1001 sdot=MA

AU

1002

2 sdot=lowastσ

U

1001

sdot⎥⎦

⎤⎢⎣

sdotminus=

lowast

lowast

δ

ε

NI S

sum minus=lowast

M

i iδδε

A is the area included in the normalized curvewhere Adeg is the rest of the area included in the 2x1 rectangle

Left side is the area -1 0where Right side is the area 0 +1

A+ is the area included below the curve on the right sidewhere A- is the area included below the curve on the left side

where

where δrsquo is the value of normalized liquid content in the symmetric cell N number of cells containing liquid in half of the diagram

lowast

lowast sum=

N

N

i i

δ

δ N Number of cells containing liquid

A area included below the curve AM area included below the ideal curvewhere

sum minus= +lowast

1

N

i ii δδσ

N Number of cells containing liquid

LIQU

ID S

PRAY

AND

SPRA

Y NO

ZZLE

SLIQUID SPRAY AND SPRAY NOZZLES Spray Distribution

27wwwpnr-nozzlescomCTG SH 07 EU

Liquids are characterized for their property of undergoing continuous deformation when subjected to shear stress The property of fluids (liquids or gases) to resist flowing due to the existence of internal friction within the fluid is called visco-sity

Thus if we imagine the different layers of fluid sliding one over the other with friction we can imagine that viscosity is defined the force required to move a unit area of fluid for a unit distance Viscosity is measured with many different systems among which the most used are the following

The following table shows correspondences between the most used viscosity units

The viscosity value of a liquid depends upon the temperature therefore the viscosity value must always be given with reference to a temperature value The viscosity of water (20deg C) is 1 Centipoise and 1 Centistoke since water mass density = 1

KINEMATIC SAYBOLT SAYBOLT ENGLER VISCOSITY UNIVERSAL FUROL

Centistoke Sq feetsec SSU SSF Degrees

100 000001076 310 --- 100

500 000005382 424 --- 137

1000 00001076 588 --- 183

1566 00001686 80 --- 245

2052 00002209 100 --- 302

2515 00002707 120 --- 357

4295 00004623 200 --- 592

1080 0001163 500 523 1460

1510 0001625 700 720 2044

1942 0002090 900 921 2628

3023 0003254 1400 143 4090

3885 0004182 1800 183 5260

5394 0005806 2500 254 7300

10788 001161 5000 509 146

15103 001626 7000 712 204

19419 002092 9000 916 263

32365 003483 15000 1526 438

METHOD UNIT DIMENSIONS NOTES

1 Dynamic viscosity(Absolute viscosity) Poise ML T-1 Poise = 100 Centipoises = (1 dyne per seccm2)

2 Kinematic viscosity Stoke L2 T-1 1 Stoke = 100 Centistoke = (cm2sec)Kinematic viscosity = Dynamic viscositydensity

3 SSUSSF

One of the most widely instruments to determine is the Saybolt viscosimeter which measures the time in seconds required for a fixed volume of a given liquid to flow through an orificeSSU = Seconds Saybolt Universal relates to a smaller orifice for less viscous liquidsSSF = Seconds Saybolt Furol relates to a larger orifice for more viscous liquids

LIQUID SPRAY AND SPRAY NOZZLES Influence of liquid viscosity

LIQU

ID S

PRAY

AND

SPRA

Y NO

ZZLE

S

28 wwwpnr-nozzlescom CTG SH 07 EU

Viscosity influence on nozzle flow rate

AlI nozzle Catalogue data refer to spraying water (water cinematic viscosity is equal to 1 Centistoke)A liquid with viscosity higher than water will require more energy to be pumped and sprayed and will flow with lower velocity at the same pressure and this will cause a reduction in the turbulence of the flow For the above reason nozzles working on the turbulence principle like normal full cone nozzles and whirl hollow cone nozzles will show an increase in capacity while spraying liquids with viscosity higher than water This increase is very consistent for small size nozzles where the small radius of the whirl chamber tends to cause high turbu-lence in the flow and tends to diminish and to disappear for nominal capacity valves (capacity values at 3 bar) larger than 15 liters per minute

The graph below shows for a liquid with a viscosity of about 4 Centistokes typical variations in the nozzle flow rate value for different values of the nozzle whirl chamber diameter As it may be seen these variations can be neglected in most practical applications where nozzles with whirl chamber diameters well over 3 mm are used

For other types of nozzles not working on the turbulence principle the increase on viscosity will simply reduce the liquid exit velocity at the orifice thus causing a decrease in capacity Experience shows that this decrease ranges between 3 and 6 of nominal water capacity that is to say that the variation introduced is in the same order of magnitude as the nozzle flow rate toler-ance

Viscosity influence on nozzle spray angle and spray pattern

With reference to the theory of jet break-up and droplet information it can be easily imagined that spraying a liquid more viscous than water is a difficult task

Al the properties of the spray tend to worsen therefore one can expectA higher value for the minimum operating pressure that is the pressure value which allows for obtaining a well defined 1 spray with the expected spray angle A worse spray distribution since the viscous behavior of the liquid makes it more difficult to pro-duce fine droplets and 2 to distribute them evenly with the desired spray pattern A narrower spray angle It is difficult to give guidelines since results on different nozzles at different pressures and with 3 different liquids are scarcely predictableHowever our experience shows that in many cases the use of impact nozzles can give acceptable results where all other type of nozzle failsA laboratory test or a field test are stili the safest way to obtain sound results

50

45

40

35

30

25

20

15

10

5

0 2 3 4 5 6 7 8 9

Increase Flow rate vs Whirl Chamber Diameter

Incr

ease

Flo

w R

ate

[mm

]

Whirl Chamber Diameter [mm]

LIQUID SPRAY AND SPRAY NOZZLES Influence of liquid viscosityLI

QUID

SPR

AYAN

D SP

RAY

NOZZ

LES

29wwwpnr-nozzlescomCTG SH 07 EU

With reference to the Bernoulli Rule as exposed in page 6 one can say that the pressure energy of the liquid flow at the nozzle inlet is transformed totally (minus some losses due to friction inside the nozzle) into liquid velocity at the nozzle orificeCatalogue figures give nozzle capacities when spraying waterIf the specific gravity or density of the liquid is different from that of water the available pressure energy will produce a different liquid velocity at the nozzle orificesIn other words a given quantity of energy will spray always the same quantity of liquid mass but different volumes (flow rates) according to the liquid specific gravity or density

Therefore a liquid heavier than water will exit the nozzle with a lower velocity at lower flow rate while to the contrary a liquid lighter than water will be sprayed at higher velocity at higher flow rate

The following formula is to be applied

The table below gives the value of a correction factor to obtain the flow rate of a liquid with different specific weight as water

WhereQL Liquid flow rateQW Water flow rateF Correction factor

kgliter Libregallon F

06 50 129

07 58 120

08 67 112

09 75 105

10 83 100

11 92 095

12 100 091

13 109 088

14 117 085

15 125 082

16 134 079

17 142 077

18 150 075

19 159 073

20 167 071

QL = F QW8

LIQUID SPRAY AND SPRAY NOZZLES Influence of liquid specific gravity

LIQU

ID S

PRAY

AND

SPRA

Y NO

ZZLE

S

30 wwwpnr-nozzlescom CTG SH 07 EU

The spraying water impact of a nozzle depends on several factors and more precisely spray distribution pattern and spray angle The first step to calculate the impact value which is usually expressed in Kilograms per square centimeter is to deter-mine Total Theoretical lmpact Value using the following formula

The obtained value has to be multiplied by the Total Theoretical Impact per Square Centimeter Coefficient (E)The final value is the Spraying Liquid Impact expressed in kgpcm2Of course not alI the energy of the fluid vein is transferred to the impact point

A part of this energy sometimes a considerable part goes to obtain a desired spraying angle by having the liquid vein acquire a high rotational speed inside the whirl chamber The highest value of impact is obtained with straight jet nozzle and the value can be calculated multiplying spraying pressure per 19The tables below containing the Total Theoretical Impact sqcm coefficient values for different spray pattern nozzles for a dis-tance of 300 mm

[kgpcm2]

TOTAL THEORETICAL IMPACT PER SQ CM COEFFICIENT AT DISTANCE OF 300 MM (E)

Spray Flat jet nozzle Spray Full cone nozzle Spray Hollow cone nozzle Angle Angle Angle

15deg 0300 15deg 0110 25deg 0180 35deg 0130 30deg 0025 40deg 0120 50deg 0100 50deg 0010 65deg 0070 65deg 0004 60deg80deg 001002 80deg 0050 80deg 0002 100deg 0001

WhereQ is the flow rate at working pressure in lpmP is the pressure value in kgpcm2

[kgpcm2]TTI = 0024 Q P

SLI = E TTI

9

10

LIQU

ID S

PRAY

AND

SPRA

Y NO

ZZLE

SLIQUID SPRAY AND SPRAY NOZZLES Jet impact

31wwwpnr-nozzlescomCTG SH 07 EU

Jet impact diagram

A further parameter to characterize the performance of a spray nozzle is the distribution of the jet impact force which could be derived by means of mathematical methods from the values of the spray distribution onto the surface covered by the spray but which can more easily be measured with the help of specifically designed instrumentation

In some applications the jet impact force Is the most important parameter used to realize the required processSteel sheet descaling in a rolling mill is a typical example where the jet impact is required to take away the surface scale and obtain a perfectly even surfaceFor that reason special nozzles have been developed to perform this very task where service life impact value and spray distribution reach the values required for satisfactory resultThese test are performed in a laboratory equipped with a specifically designed instrumentation where the high pressures involved in these process can be reached which can measure the pressure values along a matrix of points distributed in the spray area covered by the nozzle

These values are supplied both in a table of values and as a 3D pressure diagram similar to those shown below

On such applications where producing high impact values in the jet is necessary it is of paramount importance that the liquid flow turbulence is kept to a minimum and therefore it is widely used to insert into the nozzle entrance devices designed to improve the operating conditions by forcing the liquid flow through straight passages with several different shapes by doing so the impact delivered by the spray is increased with the same feed pressure

One typical shape used by Pnr is shown on the right and the two dia-grams below show the impact force diagrams for the same nozzle with and without a flow straightener the reduction of flow turbulence can lead in increase of impact force often higher than 20Further improvements of course are available when the nozzle inside profile is properly designed in order to avoid sharp cross section changes and all surfaces are finished as smoothly as possible

Typical design of a Pnr flow straightener

Impact pressure diagram with flow straightenerImpact pressure diagram without flow straightener

LIQU

ID S

PRAY

AND

SPRA

Y NO

ZZLE

S

LIQUID SPRAY AND SPRAY NOZZLES Jet impact

32 wwwpnr-nozzlescom CTG SH 07 EU

LIQUID SPRAY AND SPRAY NOZZLES Pressure drop through a nozzle

Pressure drop through a nozzle

Some of our customers have asked us In the past which Is the pressure drop through a nozzle since they consider a nozzle one of the parts in a piping like a valve or an elbow which causes a given pressure drop along the line

The reality is different and can be easily understood when considering the Bernoulli formula [2] as given at page 19 of this manual the formula says that the total energy of a liquid flow is made from the addition of three facors

Potential energy due to elevationbullPressure energybullVelocity energybull

When we apply the formula at the entrance and at the outlet ( the orifice ) of a nozzle and we neglect the influence of turbulence losses in between we can easily see that

The potential energy variation can be neglected because of the limited dimensions of the nozzle since the distance bullbetween the nozzle entrance and the nozzle orifice plays no role-The pressure energy variation is important since the liquid pressure value falls abruptly from the pressure inside the feed bullpipe to the ambient pressureThe velocity energy variation is also consistent since the liquid is ejected from the orifice at high speedbull

In other words the pressure energy of the liquid flowing through the orifice is suddenly transformed in liquid drops velocity which is exactly what a nozzle is designed to do

This is shown from equation [3] at page 19 which allows the exit velocity from the nozzle to be calculated from the pressure inside the pipe ( we actually consider the pressure difference between the inside of the pipe and the ambient pressure in this formula )

In other words all the energy still available at the nozzle is converted into velocity or if you so prefer you have a total pressure fall The system designer shall therefore evaluate all the pressure drop between the pump outlet flange and the nozzle entrance in order to be sure that the nozzle feed pressure is sufficient to assure the desired capacity for the liquid being sprayed

parameters valuesat nozzle outlet

nozzle inlet nozzle oulet or orice

feed pressure

inlet velocity

parameters valuesat the nozzle inlet

(A)potential elevation

energy

(A)velocity ( kinetic ) energy

(A)pressure energy

ambient pressure

exit velocity

LIQU

ID S

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AND

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Y NO

ZZLE

S

33wwwpnr-nozzlescomCTG SH 07 EU

NOZ

ZLE

MAT

ERIA

LS

The choice of the right material for a nozzle is sometimes the most important one to do since the nozzle operating life depends upon it There are several factors to influence or shorten the nozzle operating life sometimes more than one at the same time the most important being

Wear from solid particles suspended into the liquid being sprayed1 Chemical corrosion from the liquid being sprayed 2 Chemical corrosion from the ambience outside the nozzle3 Exposure to high temperature 4 Exposure to mechanical shocks5

NOZZLE MATERIALSPnr material codes 34Properties of materials 35Mechanical properties of materials 39Chemical resistance of materials 40

NOZZLE MATERIALS

34 wwwpnr-nozzlescom CTG SH 07 EU

PNR has adopted a short code to identify construction materials for nozzles and nozzle partsHere below the most frequenty used materials

MATERIAL STANDARDS

The following standards are mentioned with reference to materials identification

NOZ

ZLE

MAT

ERIA

LS

A1 Free Cutting Steel E1 TEFLONreg (PTFE) L3 NICROFERreg 5923

A2 Carbon Steel E3 DELRINreg (POM) L4 STELLITEreg 6

A8 Zinc Plated Mild Steel E6 PERSPEXreg (PMMA) L5 HASTELLOYreg B2

A9 Nickel Plated Mild Steel E7 VITONreg (FPM) L6 HASTELLOYreg C4

B2 AISI 304 Stainless Steel E8 NBR- Sh 70 Rubber L61 HASTELLOYreg C22

B3 AISI 316 Stainless Steel E81 SANTOPRENEreg Rubber L62 ULTIMETreg

B31 AISI 316L Stainless Steel E82 KLINGERITEreg L7 NICKEL 201

B4 AISI 321 Stainless Steel E83 HYPALONreg L8 HASTELLOYreg C276

B8 AISI 309 Stainless Steel E91 Silicon L9 SANICROreg 28 SS

B81 AISI 310 Stainless Steel F12 Tungsten Carbide (TC) N1 AISI 302 Stainless Steel

C1 AISI 420 St Steel hardened F2 PIREXreg P6 ABS

C4 AISI 317 Stainless Steel F3 Rubin P7 FASIT OIL

C6 SAF 2205 Stainless Steel F4 Zapphire P8 EPDM ShA Rubber

D1 Polyvinylchloride (PVC) F5 Ceramic P9 STIROLUXreg 637

D2 Polypropylene (PP) F6 Silicon Carbide (SC) T1 Brass

D3 Polyamide (PA) G1 Cast Iron T3 Copper

D5 Powder Charged PP H1 Titanium T5 Bronze

D6 Fiberglass Charged PP L1 MONEL 400 T8 Nickel Plated Brass

D7 High Density Polyethylene L2 INCOLOYreg 825 V1 Aluminium

D8 Polyvinylidenefluoride (PVDF) L21 INCONELreg 600 V7 Aluminium ENP

STANDARD ORGANIZATION COUNTRY STANDARD CODE

AFNOR Association Franccedilaise de Normalisation France NF

AISI American Iron and Steel Institute USA AISI

ANSI American National Standards Institute USA ANSI

ASTM American Society for Testing and Materials USA ASTM

BSI British Standards Institution UK BS

DIN Deutsches Institut fuumlr Normung Germany DIN

DSIT Dansk StandardsInformation Technology Denmark DS

ISO International Organization for Standardization International ISO

JIS Japanese Institute for Standard Japan JIS

UNI Ente Nazionale di Unificazione Italy UNI

NOTEThe complete list of the Materials Codes may be requested to our Technical Service mentioning release code TGCE CODMAT

NOZZLE MATERIALS PNR material codes

35wwwpnr-nozzlescomCTG SH 07 EU

NOZ

ZLE

MAT

ERIA

LS

B1 AISI 303 STAINLESS STEEL

Chemical composition CR 1750 NI 850 S 025 Coding correspondence

Type Stainless Steel Austenitic AISI 303

Hardening Not possible BS 303 S 21

Annealing 1050 1100deg C in water DIN Wnr 14305

Welding Possible with precautions Euro X10CrNiS1809

Corrosion properties

Good resistance Atmospheric exposure food substances organic chemicalsLow resistance Chlorides reducing acids and over 800deg C

JIS SUS 303

NF Z6CN 18-09

SIS 2346

UNI XWCrNiS 1809

B3 AISI 316 STAINLESS STEEL

Chemical composition C 005 CR 170 NI 120 MO 225 Coding correspondence

Type Stainless Steel Austenitic AISI 316

Hardening Not possible BS 316 S 21

Annealing 1050 1100deg C in water DIN Wnr 14401

Welding Easy using same steel electrodes Euro X6CrNiMo17122

Corrosion properties

Good resistance Atmosphere great number of salts organic acids foodsLow resistance Solutions of reducing acids temperatures over 500deg C

JIS SUS 316

NF Z6CND 17-11

SIS 2347

UNI X5CrNiMo1712

B31 AISI 316L STAINLESS STEEL

Chemical composition C 003 CR 170 NI 130 MO 225 Coding correspondence

Type Stainless Steel Austenitic AISI 316 L

Hardening Not possible BS 316S12

Annealing 1050 1100deg C in water DIN Wnr 14404

Welding Easy using same steel electrodes Euro X3CrNiMo1810

Corrosion properties

Good resistance Atmosphere great number of salts organic acids foods salt waterLow resistance Solutions of reducing acids temperatures over 500deg C

JIS SUS 316L

NF Z2CND17-12

SIS 2348

UNI X2CrNiMo 1712

NOZZLE MATERIALS Properties of materials

36 wwwpnr-nozzlescom CTG SH 07 EU

C1 AISI 420 STAINLESS STEEL

Chemical composition C 020 CR 1300 Coding correspondence

Type Stainless Steel Martensitic AISI 420

Hardening 980deg - 1030deg C in oil BS 420 S 29

Annealing 750deg - 800deg C in air DIN Wnr 14021

Welding Possible with precautions Euro X20Cr13

Corrosion properties Good resistance Drinkable water steamgasoline oil alcohol ammonia

JIS SUS 420 J1

NF Z20C13

SIS 2303

UNI X20Cr13

C2 AISI 416 STAINLESS STEEL

Chemical composition C 012 CR 1250 S 022 Coding correspondence

Type Stainless Steel Martensitic AISI 416

Hardening 950deg - 1100deg C in oil BS 416 S 21

Annealing 750deg - 800deg C DIN Wnr ---

Welding Not possible Euro X120CrS13

Corrosion properties Good resistance Drinkable water steamgasoline oil alcohol ammonia

JIS SUS 416

NF Z12CF13

SIS ---

UNI X12CrS13

D8 POLYVINYLIDENE FLUORIDE (PVDF)

Description HIGH-MOLECULAR WEIGHT THE TOUGHEST OF THE FLUOROCARBON RESINS

Trade names amp SuppliersKYNAR (Atochem North America Inc formerly Penwalt Corporation)

SOLEF (Solvay Polymer Corporation)

Physical andMechanical Properties

Excellent resistance to abrasion and stress fatigue

Extremely pure opaque white resin

Thermal Properties UsefuI in temperatures ranging from -73 149degC (-100 300degF)Heat deflection temperature is (8090deg C at 182 Bars (176 194deg F at 264 psi)

Chemical Compatibility

Excellent chemical resistanceCan be used with wet or dry halogens most strong acids and bases aliphatics aromaticsalcohols and strong oxidizing agentsNot recommended for contact with ketones esters amines and some organic acids(fuming sulfuric acid)

NOZZLE MATERIALS Properties of materialsN

OZZL

E M

ATER

IALS

37wwwpnr-nozzlescomCTG SH 07 EU

E1 POLYTETRAFLUOROETHYLENE (PTFE)

Description FLUOROPLASTIC THAT HAVE SOME OR ALL OF THEIR HYDROGEN MOLECULESREPLACED BY FLUORINE

Trade names amp Suppliers

TEFLON TFE FEP and PFA (Dupont Polymer Products)

NEOFLON (Daikin)

FLUON (ICI Americas Inc)

SST-2SST-3 (Shamrock Technologies Inc)

Physical andMechanical Properties

Low coefficient

Low adhesiveness

Buona resistenza agli agenti atmosferici

Good weatherabilityLow resistance to creep and wear unless reinforced with glass figravebers which results in superior resistance

Thermal Properties High and low temperature stabilityHeat deflection temperatures range from 4855deg C at 182 bar (118-132deg F at 264 psi)

Chemical CompatibilityChemically inert

Totally insoluble

E3 ACETAL (ACETAL HOMOPOLYMERS AND COPOLYMERS)

Description HIGHLY CRYSTALLINE RESINS BASED ON FORMALDEHYDE POLYMERIZATION TECHNOLOGY

Trade names amp Suppliers

DELRIN (Dupont Polymer Products Corporation)

CELCON (Hoechst Celanese Corporation)

ULTRAFORM (BASF Corporation)

RTP 800 (RTP Corporation)

LUPITAL amp TENAL (Franklin Polymers Inc)

FULTRON 404 (ICI Americas Inc)

Physical andMechanical Properties

High tensile strength rigidity and esilience

High fatigue endurance

Excellent dimensional stability

Low coefficient of friction

Outstanding abrasion and wear resistance

Excellent creep resistance

Thermal Properties Heat deflection temperatures range from 110 -136deg C at 182 bars(230 - 270deg F at 264 psi) higher if glass figravelled

Chemical Compatibility

Remains stable in long-term high temperature water immersionExcellent resistance to chemicals and solvents but prolonged exposure to strong acids not recommendedNote Suitable for close-tolerance high-performance partsAvailable for machined parts or may be injection molded

NOZZLE MATERIALS Properties of materials

NOZ

ZLE

MAT

ERIA

LS

38 wwwpnr-nozzlescom CTG SH 07 EU

L6 HASTELLOY C4

PHYSICAL AND MECHANICAL PROPERTIES CHEMICAL COMPOSITION CORROSION RESISTANCE

R = 650800 Mpa C = 0015 max

Very good against pitting and tensile-corrosion specially in oxydizing atmosphereResistance in welded joints definitely better than C 276 lower than C22

Rp02 = 250470 Mpa Ni = 65

HRB = 90 Cr = 160

Mo = 155

W = --

Fe = 3 max

Ti = 05

Co = 2 max

APPLICATIONSRecommended for applications with strongly oxidizing atmosphere

L61 HASTELLOY C 22

PHYSICAL AND MECHANICAL PROPERTIES CHEMICAL COMPOSITION CORROSION RESISTANCE

R = 700800 Mpa C = 001 max

Excellent performances with oxydizing atmospheres as well as for pitting and tensile-corrosion conditionsVery good resistance in reducing atmospheres and for welded joints

Rp02 = 360420 Mpa Ni = 56

HRB = 93 Cr = 22

Mo = 13

W = 3

Fe = 3

Ti = --

Co = 25 max

APPLICATIONSChemical industry (gas ducts gas washing and treatment systems phosphoric acid production) Heat exchangers pumps chlorination reactors

L8 HASTELLOY C 276

PHYSICAL AND MECHANICAL PROPERTIES CHEMICAL COMPOSITION CORROSION RESISTANCE

R = 600800 Mpa C = 0015 max

Very good in reducing and oxydizing atmospheresVery good against pitting and tensile-corrosionAcceptable resistance in welded jointsIn cast parts excessive segregation not eliminated by thermal treatment of annealing makes it convenient to use C22 or C4 qualitieswhich assure better corrosion resistance and mechanical properties

Rp02 = 300370 Mpa Ni = 57

HRB = 90 Cr = 145165

Mo = 1517

W = frac345

Fe =

V = 035 max

Co = 25 max

APPLICATIONSChemical industry (air ducts scrubbers fans) Paper industry Thermoelectric plants Steel thermal treatments

NOZ

ZLE

MAT

ERIA

LSNOZZLE MATERIALS Properties of materials

39wwwpnr-nozzlescomCTG SH 07 EU

MATERIALTENSILE STRENGHT

CORROSION RESISTANCERp 02 R

20degC 800degC 20degC 800degC

(68degF) (1408degF) (68degC) (1408degC)

AISI 302 280 100 680 200

Good sensitive to corrosionbetween grains for slow heatingand cooling in the 450-900deg Crange temperature

AISI 303 280 100 680 200 Discrete

AISI 304304L 270 90 600 100Good especially for 304L304 sensitive to corrosionbetween grains like AISI 302

AISI 309 250 100 640 220 Good Sensitive to corrosion between grains like AISI 302

AISI 310 310 170 650 270Good (gt 304 - 304L)Sensitive to corrosionbetween grains like AISI 302

AISI 316316L 270 110 560 220 Very high especially for 316L

AISI 321 210 100 540 140 Good

AISI 347 280 120 620 200 Good

AISI 416 620 70 750 90

Good in medium corrosive ambient (atmosphere water gasoline alcohol N1-13 foods)Not in high corrosive

BRASS 110-150 --- 360-410 --- Good especially when nickel plated

BRONZE 100-300 --- 200-600 --- Discrete especially with sea water

CAST IRON le 500 V 100-800 V

NICKEL ALLOYS 100-1000 V 300-1300 VVery high also for high temperature To use in the temperaturerange 800-1200deg C

PLASTICS --- --- 20-200 ---

Good also for erosionGenerally they are attackedwith oxidizers like nitric acidhalogens ect

PTFE --- --- 30-40 ---

Very high except for elementarystate of alkaline metalsand to compounds containingfluorine at high temp

DUPLEX STEEL gtAISI 3 gtAISI 3 gtAISI 3 gtAISI 3 Very high also with high temperatureand also for pitting

TITANIUM alloy 195-850 V 300-900 VVery high in oxidizing ambientVery low in reducing ambient and with compounds containing fluorine

Legend Rp 02 = 02 YIELD STRENGHT [MPa]R = ULTIMATE TENSILE STRENGHT [MPa]V = To verify time by time

NOZZLE MATERIALS Mechanical properties of materials

NOZ

ZLE

MAT

ERIA

LS

73wwwpnr-nozzlescomCTG SH 07 EU

PIPI

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PIPINGPipes data 74Economic pipe sizes 75Pressure drop in clean steel pipes 76Flange dimensions 78Sieve size conversion chart 80

PIPING

74 wwwpnr-nozzlescom CTG SH 07 EU

The following table report the data of pipes according to ANSI B3619 that is one of the most used standards that regulate welded stainless steel pipes

DN NPS OD[mm]

SCHEDULE

5S 10S 40SSTD 80SXS

t m t m t m t m

[mm] [kgm] [mm] [kgm] [mm] [kgm] [mm] [kgm]

6 18 103 NA NA 124 028 173 037 241 048

8 14 137 NA NA 165 050 224 064 302 081

10 38 172 NA NA 165 064 231 086 320 112

15 12 213 165 081 211 101 277 128 373 164

20 34 267 165 103 211 130 287 171 391 223

25 1 334 165 131 277 212 338 254 455 328

32 1frac14 422 165 167 277 273 356 344 485 453

40 1frac12 483 165 192 277 315 368 411 508 549

50 2 603 165 242 277 399 391 551 554 759

65 2frac12 730 211 374 305 534 516 875 701 116

80 3 889 211 458 305 655 549 115 762 155

90 3frac12 1016 211 525 305 752 574 138 808 189

100 4 1143 211 592 305 849 602 163 856 226

125 5 1413 277 960 340 117 655 221 953 314

150 6 1683 277 115 340 140 711 287 1097 432

200 8 2191 277 150 376 202 818 431 1270 656

250 10 2730 340 229 419 282 927 611 1270 827

300 12 3239 396 317 457 365 953 749 1270 988

350 14 3556 396 348 478 419 NA NA NA NA

400 16 4064 419 421 478 480 NA NA NA NA

450 18 457 419 474 478 541 NA NA NA NA

500 20 508 478 602 554 696 NA NA NA NA

550 22 559 478 662 554 767 NA NA NA NA

600 24 610 554 837 635 959 NA NA NA NA

Where

DN = Nominal diameter NPD = Nominal Pipe Size OD = Outside Diameter t = Wall Thickness m = Specific WeightPIPI

NG

PIPING Pipes data

75wwwpnr-nozzlescomCTG SH 07 EU

The following Specific Pressure Drops (Y) are normally used in the good engineering practice(where Y=ΔPL ΔP Pressur Drop and L Pipe Lenght)

For pipe sizing the Velocity (V) is also usedIn the following table are shown the typical liquid velocities in steel pipes

Some fixed pressure drop values indicationsfor gate valves (fully open) consider a pressure drop of 5 metersbullfor normal bends consider a pressure drop of 5 metersbullfor a check valve consider a pressure drop of 15 metersbull

In the succeeding tables we show the velocity and specific pressure drop for several flow rates and pipe diameters

Not boiling waterY = 02divide05 bar100 m for pump discharge (07 bar100 m max if P gt 50 bar)

Y lt 0110 bar100 m for pump suction

Boiling water Y = 004divide005 bar100 m for pump suction (velocity = 03divide09 ms)

LIQUID LINE TYPE

Specific Pressure Dropsvs Velocity [ms]

0 lt V lt 2 3 lt V lt 10 10 lt V lt 20

NOT BOILING WATER

Pump suctionPump discharge (long)Discharge leads (short)Boiler feedDrainsSloped sewer

03 divide 0606 divide 0912 divide 2712 divide 2709 divide 12

-

06 divide 1209 divide 1515 divide 3715 divide 3709 divide 1509 divide 15

09 divide 1812 divide 2124 divide 4224 divide 42

-12 divide 21

HYDROCARBON LIQUIDS(normal viscosity)

Pump suctionDischarge heather (long)Discharge leads (short)Drains

05 divide 0808 divide 1112 divide 2709 divide 12

06 divide 1209 divide 1515 divide 3709 divide 15

09 divide 1812 divide 2124 divide 46

-

MEDIUM VISCOSITY OILPump suctionDischarge (short)Drains

--

03

05 divide 0901 divide 0209 divide 15

08 divide 1501 divide 0312 divide 18

OTHER WATERCooling tower Chilled waterSea water and generally foulingwater (long pipes) ()

06 divide 09 09 divide 15 12 divide 21

Note () In this case Cameron method has to be used with C=1 Y = 005 divide 012 bar100 m for principal manifold Y = 012 divide 023 bar100 m for secondary manifold

PIPI

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PIPING Economic pipe sizes

76 wwwpnr-nozzlescom CTG SH 07 EU

18rdquo 14rdquo

1 0350 0370 0200 0090 38rdquo 12rdquo

2 0705 1340 0395 0331 0223 0082 0145 0029 34rdquo

3 1060 2890 0593 0673 0333 0176 0217 0061 0125 0016 1rdquo

4 1410 4940 0788 1150 0444 0291 0290 0101 0167 0027 0110 0010

5 1760 7460 0985 1750 0556 0424 0362 0149 0209 0040 0137 0014

6 1180 2460 0667 0594 0434 0207 0251 0054 0165 0019 114rdquo

8 1580 4060 0892 1020 0579 0351 0335 0091 0219 0033 0126 0009 112rdquo

10 1110 1530 0724 0534 0418 0136 0274 0049 0158 0012 0116 0006

15 1670 3250 1090 1130 0627 0284 0411 0099 0236 0026 0174 0012

20 2rdquo 2230 5600 1450 1900 0836 0481 0549 0168 0315 0043 0233 0021

30 0212 0013 212rdquo 2170 4130 1250 1020 0823 0353 0473 0092 0348 0043

40 0283 0022 0190 0007 2900 7180 1670 1760 1100 0606 0631 0155 0465 0073

50 0354 0032 0237 0012 2090 2700 1370 0911 0789 0233 0581 0108

60 0424 0044 0284 0017 2510 3810 1650 1290 0943 0321 0697 0150

70 0495 0079 0332 0022 3rdquo 2930 5120 1920 1720 111 0434 0814 0199

80 0566 0074 0379 0028 0248 0010 312rdquo 2190 2210 126 0554 0925 0253

90 0636 0093 0427 0035 0279 0013 0209 0006 2470 2770 142 0692 1040 0319

100 0707 0114 0474 0043 0310 0015 0232 0007 4rdquo 2740 3400 158 0843 1160 0392

150 1060 0238 0711 0090 0464 0031 0349 0016 0272 0008 4110 7440 236 181 1740 0828

200 1410 0414 0948 0153 0619 0053 0466 0027 0362 0014 315 314 2330 1450

250 1760 0625 1190 0233 0774 0080 0581 0040 0453 0021 5rdquo 2900 2200

300 2120 0889 1420 0324 0930 0112 0698 0055 0543 0030 0352 0011 3480 3070

350 2470 1190 1660 0438 1080 0150 0815 0074 0634 0040 0411 0014 6rdquo 4070 4160

400 2830 1550 1900 0563 1240 0195 0935 0096 0724 0051 0469 0018 0341 0007 4650 5380

450 3180 1930 2130 0707 1390 0242 1050 0120 0815 0063 0528 0022 0366 0009 5230 6790

500 3540 2380 2370 0867 1550 0298 1170 0147 0902 0076 0587 0027 0407 0011

550 3880 2870 2610 1040 1700 0354 1280 0174 0991 0092 0645 0032 0447 0013

600 4240 3390 2840 1220 1860 0418 1400 0204 1090 0110 0704 0037 0488 0015

650 4590 5560 3080 1420 2010 0486 1510 0239 1180 0127 0762 0043 0529 0017

700 4950 4550 3320 1650 2170 0560 1630 0275 1270 0146 0821 0050 0569 0020

750 5300 5200 3560 1880 2320 0637 1750 0314 1360 0164 0879 0057 0610 0023

800 3790 2130 2480 0721 1860 0354 1450 0185 0936 0064 0651 0025 8rdquo

850 4030 2390 2630 0805 1980 0395 1540 0209 1000 0072 0692 0028 0403 0007

900 2790 0901 2090 0438 1630 0232 1050 0008 0732 0032 0427 0008

950 2940 1000 2210 0486 1720 0258 1120 0087 0773 0036 0451 0010

1000 3100 1110 2320 0534 1810 0284 1170 0096 0814 0039 0474 0011

1100 3410 1290 2560 0643 1990 0341 1290 0116 0895 0047 0522 0012

1200 3720 1 580 2800 0763 2170 0403 1410 0135 0974 0055 0569 0015

1300 3030 0890 2360 0473 1530 0157 1060 0063 0616 0017

1400 3260 1020 2540 0544 1640 0183 1140 0072 0664 0019

1500 3490 1170 2720 0617 176 0208 1220 0083 0712 0022

1600 3720 1330 2890 0697 1880 0234 1300 0093 0758 0025

1700 10rdquo 3950 1490 3080 0784 1990 0260 1380 0104 0806 0028

1800 0546 0010 3260 0875 2110 0290 1470 0116 0854 0032

1900 0575 0012 3440 0965 2230 0323 1550 0129 0901 0034

2000 0606 0012 3617 1060 2340 0356 1630 0143 0946 0037

2200 0667 0015 3980 1280 2580 0429 1790 0172 1050 0045

2400 0727 0017 12rdquo 2820 0507 1950 0200 1140 0053

2600 0788 0021 0563 0009 3050 0589 2110 0234 1230 0061

2800 0848 0023 0606 0010 14rdquo 3280 0676 2280 0268 1330 0070

3000 0909 0026 0649 0011 0532 0007 3520 0773 2440 0306 1420 0080

3500 1060 0035 0760 0015 0620 0009 4110 105 2850 0416 1660 0108

4000 1210 0045 0866 0020 0709 0012 16rdquo 4690 135 3250 0532 1900 0139

4500 1360 0056 0976 0025 0798 0015 0606 0007 3660 0674 2130 0173

5000 1520 0069 1080 0029 0886 0018 0674 0009 4070 0822 2370 0212

6000 1810 0097 1290 0042 1070 0026 0808 0013 18rdquo 4880 1160 2850 0301

7000 2120 0130 1510 0055 1240 0035 0940 0017 0741 0010 5690 1580 3310 0403

8000 2420 0168 1730 0072 1420 0045 1080 0022 0847 0012 6510 2050 3790 0525

9000 2730 0210 1950 0091 1600 0056 1210 0027 0954 0015 4270 0659

10000 3030 0257 2170 0111 1770 0067 1350 0033 1050 0019 4740 0801

Legend Q Water Flow Rate (Lpm) V Velocity (ms) Y Specific Pressure Drops (bar100m)Water at ambient temperature in straight pipe

SPECIfIC PRESSURE DROPS fOR WATER fLOW IN CLEAN STEEL PIPE SCH 10S

Q V Y V Y V Y V Y V Y V Y V Y V Y [lm] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m]

PIPI

NG

77wwwpnr-nozzlescomCTG SH 07 EU

SPECIfIC PRESSURE DROPS fOR WATER fLOW IN CLEAN STEEL PIPE SCH 40S

Legend Q Water Flow Rate (Lpm) V Velocity (ms) Y Specific Pressure Drops (bar100m)Water at ambient temperature in straight pipe

18rdquo 14rdquo

1 0458 0726 0251 0170 38rdquo 12rdquo

2 0918 2590 0501 0600 0272 0136 0170 0044 34rdquo

3 1380 5590 0752 1220 0407 029 0255 0091 0144 0023 1rdquo

4 1840 9570 1000 2090 0543 048 0340 0151 0192 0038 0120 0012

5 2290 14450 1250 3180 0679 070 0425 0223 0241 0057 0150 0017

6 1500 4460 0815 0980 0510 0309 0289 0077 0180 0024 114rdquo

8 2010 7360 1090 1690 0680 0524 0385 0129 0240 0041 0138 0011 112rdquo

10 1360 2520 0850 0798 0481 0193 0300 0061 0172 0015 0127 0008

15 2040 5370 1280 1690 0722 0403 0450 0124 0258 0032 019 0015

20 2rdquo 2720 9240 1700 2840 0962 0683 0600 0210 0344 0054 0254 0026

30 0231 0016 212rdquo 2550 6170 1440 1450 0900 0442 0517 0114 038 0053

40 0308 0027 0216 0010 3400 10720 1920 2500 1200 0758 0689 0193 0507 0091

50 0385 0039 0270 0017 2410 3830 1500 1140 0861 029 0634 0135

60 0462 0055 0324 0023 2890 5410 1800 1610 103 0400 0761 0187

70 0539 0098 0378 0031 3rdquo 3370 7270 2100 2150 1210 0541 0888 0248

80 0616 0092 0432 0039 028 0014 312rdquo 2400 2760 1380 0690 1010 0315

90 0693 0115 0486 0048 0315 0017 0235 0008 2700 3470 1550 0862 1140 0397

100 0770 0141 0540 0059 035 002 0261 0010 4rdquo 3000 4250 1720 1050 1270 0488

150 1150 0295 0810 0125 0524 0042 0392 0021 0304 0011 4500 9300 2580 2260 1900 1030

200 1540 0512 1080 0212 0699 0072 0523 0036 0405 0019 3440 3910 2540 1810

250 1920 0773 1350 0322 0874 0108 0653 0053 0507 0028 5rdquo 3170 2740

300 2310 1100 1620 0449 105 0152 0784 0074 0608 004 0387 0014 3800 3820

350 2690 1470 1890 0606 122 0203 0915 0099 0710 0053 0452 0018 6rdquo 4440 5180

400 3080 1920 2160 0780 14 0264 1050 0128 0811 0068 0516 0023 0375 0009 5070 6690

450 3460 2390 2430 0979 157 0328 1180 0161 0912 0084 0581 0028 0402 0012 5710 8450

500 3850 2950 2700 1200 175 0403 1310 0196 1010 0101 0646 0034 0447 0014

550 4230 3550 2970 1440 192 0479 1440 0232 1110 0122 0710 0041 0491 0016

600 4620 4200 3240 1690 2100 0566 1570 0273 1220 0146 0775 0047 0536 0019

650 5000 6880 3510 1970 2270 0658 1700 0319 1320 0169 0839 0055 0581 0022

700 5390 5630 3780 2280 2450 0759 1830 0368 1420 0194 0904 0063 0625 0025

750 577 6440 4050 2600 2620 0863 1960 042 1520 0218 0968 0072 067 0029

800 4320 2950 2800 0977 2090 0473 1620 0246 1030 0081 0715 0032 8rdquo

850 4590 3310 2970 1090 2220 0528 1720 0277 1100 0091 076 0036 0439 0009

900 3150 1220 2350 0585 1820 0308 1160 0100 0804 0041 0465 001

950 3320 1350 248 0649 1930 0342 1230 0111 0849 0045 0491 0012

1000 3500 1500 261 0714 2030 0377 1290 0122 0894 0049 0516 0013

1100 3850 1750 2870 0860 2230 0452 1420 0147 0983 0059 0568 0015

1200 4200 2140 3140 1020 2430 0534 1550 0172 1070 0069 0620 0018

1300 3400 1190 2640 0627 1680 0200 1160 008 0671 0021

1400 3660 1370 2840 0722 1810 0232 1250 0091 0723 0024

1500 3920 1560 3040 0818 1940 0264 1340 0105 0775 0027

1600 4180 1780 3240 0924 2070 0297 1430 0118 0826 0031

1700 10rdquo 4440 1990 3450 1040 2190 0331 1520 0132 0878 0035

1800 0590 0012 3650 1160 2320 0369 1610 0147 0930 0039

1900 0622 0014 3850 1280 2450 041 1700 0163 0981 0042

2000 0655 0015 40500 1410 2580 0452 1790 0181 1030 0046

2200 0721 0018 4460 1700 2840 0545 1970 0217 1140 0056

2400 0786 0021 12rdquo 3100 0645 2140 0253 1240 0065

2600 0852 0025 0600 001 3360 0749 2320 0296 1340 0076

2800 0917 0028 0646 0012 14rdquo 3610 0859 2500 0339 1450 0087

3000 0983 0032 0692 0013 0573 0008 3870 0982 268 0387 1550 0099

3500 1150 0043 0810 0018 0668 0011 4520 1330 3130 0526 1810 0134

4000 1310 0055 0923 0023 0764 0014 16rdquo 5160 1720 3570 0673 2070 0172

4500 1470 0068 1040 0029 0860 0018 0658 0009 4020 0853 2320 0214

5000 1640 0084 1150 0034 0955 0022 0731 0011 4470 1040 2580 0262

6000 1960 0118 1380 0049 1150 0031 0877 0016 18rdquo 5360 1470 3100 0373

7000 2290 0158 1610 0065 1340 0042 1020 0021 0808 0012 6250 2000 3610 0499

8000 2620 0204 1840 0085 1530 0054 1170 0027 0924 0015 7150 2590 4130 065

9000 2950 0256 2080 0107 1720 0067 1310 0033 1040 0019 4650 0816

10000 3280 0313 2310 0130 1910 0081 1460 0041 1150 0023 5160 0992

Q V Y V P V Y V Y V Y V Y V Y V Y [lm] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m]

PIPI

NG

78 wwwpnr-nozzlescom CTG SH 07 EU

10 75 12 038 4 11 50

15 80 12 044 4 11 55

20 90 14 065 4 11 65

25 100 14 082 4 11 75

32 120 14 117 4 14 90

40 130 14 139 4 14 100

50 140 14 162 4 14 110

65 160 14 214 4 14 130

80 190 16 343 4 18 150

100 210 16 422 4 18 170

125 240 18 611 8 18 200

150 265 18 751 8 18 225

175 295 20 1020 8 18 255

200 320 20 1230 8 18 280

250 375 22 1850 12 18 335

300 440 22 2550 12 22 395

350 490 22 3180 12 22 445

400 540 22 3850 16 22 495

450 595 22 4700 16 22 550

500 645 24 6040 20 22 600

PN 6 (UNI 6091)

ND 6 (DIN 2527) DN Flange Holes

D t W N Oslash a

90 14 063 4 14 60

95 14 071 4 14 65

105 16 101 4 14 75

115 16 122 4 14 85

140 16 180 4 18 100

150 16 209 4 18 110

165 18 287 4 18 125

185 18 365 4 18 145

200 20 461 8 18 160

220 20 565 8 18 180

250 22 812 8 18 210

285 22 1050 8 22 240

315 24 1410 8 22 270

340 24 1620 12 22 295

405 28 2510 12 25 355

460 28 3520 12 25 410

520 30 4820 16 25 470

580 32 6350 16 30 525

640 32 7720 20 30 585

715 34 1020 20 33 650

PN 16 (UNI 6093)

ND 16 (DIN 2527) Dimensions Holes

D t W N Oslash a

ND 10 (DIN 2527) Dimensions Holes

D t W N Oslash a

90 14 063 4 14 60

95 14 071 4 14 65

105 16 101 4 14 75

115 16 122 4 14 85

140 16 180 4 18 100

150 16 209 4 18 110

165 18 287 4 18 125

185 18 365 4 18 145

200 20 461 4 18 160

220 20 565 8 18 180

250 22 812 8 18 210

285 22 1050 8 22 240

315 24 1410 8 22 270

340 24 1650 8 22 295

395 26 2410 12 22 350

445 26 3080 12 22 400

505 26 3960 16 22 460

565 26 4960 16 25 515

615 26 5860 20 25 565

670 28 7530 20 25 620

PN 10 (UNI 6092)

LegendaDN Nominal DiameterD Flange External Diametert Flange ThicknessW Flange WeightN Hole NumberOslash Hole Diametera Hole axis

PIPING Flange dimensionsPI

PIN

G

Blind flanges to DIN 2527

79wwwpnr-nozzlescomCTG SH 07 EU

LegendDN Nominal DiameterD Flange External Diametert Flange ThicknessW Flange WeightN Hole NumberOslash Hole Diametera Hole axis

12rsquorsquo 889 111 08 4 159 603

34rsquorsquo 984 127 09 6 159 698

1rsquorsquo 1079 143 10 4 159 794

114rsquorsquo 1175 159 13 4 159 889

112rsquorsquo 1270 175 14 4 159 984

2rsquorsquo 1524 190 18 4 190 1206

212rsquorsquo 1778 222 32 4 190 1397

3rsquorsquo 1905 238 41 4 190 1524

312rsquorsquo 2159 238 59 8 190 1778

4rsquorsquo 2286 238 77 8 190 1905

5rsquorsquo 2540 238 91 8 222 2159

6rsquorsquo 2794 254 118 8 222 2413

8rsquorsquo 3429 286 204 8 222 2984

10rsquorsquo 4064 302 318 12 254 3619

12rsquorsquo 4826 317 500 12 254 4318

14rsquorsquo 5334 349 600 12 286 4762

16rsquorsquo 5969 365 770 16 286 5397

18rsquorsquo 6350 397 950 16 317 5778

20rsquorsquo 6985 429 1230 20 317 6350

22rsquorsquo 7493 460 1510 20 349 6921

ANSI 150 lb DN Flange Holes

D t W N Oslash a

952 143 10 4 159 667

1175 159 14 4 190 825

1238 175 18 4 190 889

1333 206 27 4 190 984

1556 222 36 4 222 1143

1651 254 45 8 190 1270

190S 286 68 8 222 1492

209S 317 91 8 222 1683

2286 349 132 8 254 1841

2540 349 150 8 254 2000

2794 381 200 8 254 2349

3175 413 277 12 254 2699

3810 476 450 12 286 3302

4445 540 700 16 317 3873

5207 571 103 16 349 4508

5842 603 141 20 349 5143

6477 635 181 20 381 5715

7112 667 228 24 381 6286

7747 698 282 24 413 6858

8382 730 311 24 444 7429

ANSI 400 lb Dimensions Holes

D t W N Oslash a

ANSI 300 lb Dimensions Holes

D t W N Oslash a

952 143 10 4 159 667

1175 159 14 4 190 825

1238 175 18 4 190 889

1333 190 27 4 190 984

1556 206 32 4 220 1143

1651 222 36 8 190 1270

1905 254 54 8 222 1492

2095 286 73 8 222 1683

2286 302 95 8 222 1841

2540 317 122 8 222 2000

2794 349 159 8 222 2349

3175 365 227 12 222 2699

3810 413 370 12 254 3302

4445 476 580 16 286 3873

5207 508 840 16 317 4508

5842 540 1070 20 317 5143

6477 571 1390 20 349 5715

7112 603 3900 24 349 6286

7747 635 2230 24 349 6858

8382 667 2700 24 413 7429

PIPING Flange dimensions

PIPI

NG

flanges to ANSI norms

80 wwwpnr-nozzlescom CTG SH 07 EU

PIPI

NG

Sieves are used both for determining the particle size distribution of a granular material and to filter solid particles in a liquid Normally the sieve is made with a fabric whose characteristic dimensions areL is the Opening Width (free passage)D is the Diameter of the wireP is the Pitch of the wireS is the Thickness of the fabricTo classify particle sizes there is some Sieve Series according to specific standardsthe most known are Tyler Sieve Series US Sieve Series UK Sieve SerieshellipThe Tyler mesh size indicates exactly the number of openings per linear inch of mesh

L[microm]

TYLER Sieve[Mesh No]

ASTM E11 Sieve[Mesh No]

BS 410 Sieve[Mesh No]

DIN 4188 Sieve[mm]

5 2500 2500 0005

10 1250 1250 0010

15 800 800 0015

20 625 635 625 0020

22 0022

25 500 500 500 0025

28 0028

32 na 450 440 0032

36 0036

38 400 400 400

40 0040

45 325 325 350 0045

50 0050

53 270 270 300

56 0056

63 250 230 240 0063

71 0071

75 200 200 200

80 0080

90 170 170 170 0090

100 0100

106 150 140 150

112 0112

125 115 120 120 0125

140 0140

150 100 100 100

160 0160

180 80 80 85 0180

200 0200

In the german standard (DIN norm 4188) the Opening Width (L) is given in millimeters

PIPING Sieve size conversion chartPI

PIN

G

81wwwpnr-nozzlescomCTG SH 07 EU

L[microm]

TYLER Sieve[Mesh No]

ASTM E11 Sieve[Mesh No]

BS 410 Sieve[Mesh No]

DIN 4188 Sieve[mm]

212 65 70 72

250 60 60 60 0250

280 0280

300 48 50 52

315 0315

355 42 45 44 0355

400 0400

425 35 40 36

450 0450

500 32 35 30 0500

560 0560

600 28 30 25

630 0630

710 24 25 22 0710

800 0800

850 20 20 18

900 0900

1000 16 18 16 1000

1120 1120

1180 14 16 14

1250 1250

1400 12 14 12 1400

1600 1600

1700 10 12 10

1800 1800

2000 9 10 8 2000

2240 2240

2360 8 8 7

2500 2500

2800 7 7 6 2800

3150 3150

3350 6 6 5

3550 3550

4000 5 5 4 4000

4500 4500

4750 4 4 35

5000 5000

5600 35 35 3

6700 3 0265 in 1

8000 25 516 in na

Applicable standards areISO 565 (1987) ISO 3310 (1999) ASTM E 11-70 (1995)DIN 4188 (1977) BS 410 (1986) AFNOR NFX11-501 (1987)

Legend Q Water Flow Rate V Velocity P Pressure drop Pressure drop in bar per 100 meters of straight pipe (water at ambient temperature)

PIPING Sieve size conversion chart

PIPI

NG

Besides its main range of nozzles for industrial applications PNR manufactures a wide range of complementary products and systems to optimize the use of spray jets and fluids control in most of the modern industrial processes

PNR PRODUCT RANGE

CTG AC

CTG LS

CTG UG

CTG AZ

Complementary Products andAssembly FittingsA complete line of nipples clamps swivel joints and everything that helps you to assemble align and service your spraying systems quickly and easilyAir blowers mixing eductors filters clean-ing guns and lances hose reels steam heaters pressure tanks quick couplings to help you build up a professional system upgraded to the latest standards

Tank washing systemsA complete range from simple fixed washing heads to the two-axis heads from mushroom nozzles to fluid driven reaction heads up to the motor driven washing heads equipped with a pneu-matic or electric motorAll for the inside cleaning of industrial tanks according to the latest technology accessories included

Spray nozzles for industrial applicationsOne of the world most complete lines of nozzles for numberless industrial appli-cations Nozzles with a wide openings range various types of vanes several spray patterns anti-clog design available in small and big dimensions and made in many food-grade materials like PFTE and Stainless Steel 316L with threaded and flanged connections

Air assisted atomizersUltrasonic classic and automatic atomiz-ers for the finest atomization in any insus-trial process High quality machining and strict quality control ensure your systems top professional resultsProgramming and control panels for an easy assembly of complete humidification systems

CTG SP

CTG PM

CTG SW

CTG LN

Spraydry nozzlesAir assisted or hydraulic high pressure ato-mizers made in high-quality metal alloys or tungsten carbideA complete line of nozzles for the moder-nization of existing facilities at competitive prices To ensure highly accurate results and a long service life these nozzles are manufactured with the finest materials and technologically advanced machines

Paper mill productsA line of products specifically designed for perfect results on paper mill machines including disc nozzles patented for self-cleaning filters flat jet nozzles with orifices in sapphire ruby and ceramic oscillating tubes equipped with a computer driven motor

Steelwork nozzlesA complete line of nozzles for steelwork applications including continuous casting air atomizers and conventional nozzles descaling nozzles for high pressure sys-tems dovetail tips for cylinders cooling and high capacity flanged nozzles for coke quenching

Gas cooling lancesSpillback or air assited lances for gas coo-ling in steelworks cement plants and other industrial applicationsWe can supply spare parts upgrade your plant and even supply a complete PLC driven system to enhance the towers per-formances to the highest efficiency level allowed by today technology

wwwpnr-nozzlescomCTG SH 07 EU

CTG SH 07 EUwwwpnr-nozzlescom

STAM

PATO

IN E

U 09

09

copy B

ellamp

Tany

Our products are distributed through

We are also represented in

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Page 20: SPRAY CTG SH 07 EU ENGINEERING HANDBOOK

20 wwwpnr-nozzlescom CTG SH 07 EU

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SLIQUID SPRAY AND SPRAY NOZZLES Nozzle flow rate

The Equation (5) has been obtained after having simplified the real problem neglecting several factors like for examplebullInmostofthepracticalapplicationcasestheflowisturbulentandnotlaminarbullFrictionlossestendtostronglyincreasewithliquidvelocitybullDependinguponthetypeofnozzleadifferentpercentageoftheavailableenergyisusedtobreakupthejetandgivethe

desired spray pattern and spray angle

For the above reason equation (5) gives reliable results if used in a limited pressure range around the pressure value where the flow rate is known with this pressure range depending upon the type of nozzleOur experience has shown that one can expect the error in the calculated value to be lower than +- 6 for pressure values ranging from 13 to 3 times the reference value

As an example a nozzle rated for 10 lpm at 3 bars would have according to equation (5) the following flow valuesa 1 bar 577 lpma 9 bar 173 lpmin real conditions it can be expected the flow rate values to beas high as 61 lpm a 1 baras low as 162 lpm a 9 barAbove considerations are to be used as a guideline only because of the many factors influencing real operations which have not been considered here for example liquid temperature viscosity and density

Possible percentage deviation from theoretical flow rate values

Also above mentioned percentage errors have to be understood for nozzles using part of the flow energy to produce wide angle spray patternsLower values can be expected for narrow angle nozzles impact nozzles and straight jet nozzles Laboratory tests and diagrams showing real flow rate values for each nozzles are used in practice when a precise result must be available

Nozzle discharge coefficient

With reference to equation (4) if we consider the pressure value to be equal to 1 (P = 1 bar) the flow rate of the nozzle becomes

K is a parameter widely used in the fire fighting industry

In some instances reference is made to the nozzle discharge coefficient or shortly to the nozzle coefficient to indicate the nozzle flow rate for a unitary pressure Of course for a given pressure value Pn the flow value will be

+ 6

+ 3

- 3

- 6

CAPACITY AT A GIVEN PRESSURE VALUEWHEN K KHOWN

NOZZLE CAPACITYFOR P=1 barQ = K P = K 1 = K

6 Qn = K Pn

21wwwpnr-nozzlescomCTG SH 07 EU

The spray angle is the opening angle which the nozzle jet of droplets forms at the moment when it leaves the nozzle orifice and it is one of the fundamental parameters for the choice of a given nozzleIn fact the amplitude of the spray angle determines in connection with the distance between the nozzle orifice and the target to be covered the spray coverage and the density of liquid sprayed with respect to the cover area See our Catalogue for description of the different nozzle spray patterns The table at the bottom of the page gives the theoretical spray width based on the nozzle spray angle and the distance from the nozzle orifice It is important to note that because of several factors like gravity forces and aerodynamic drag the spray angle value cannot be maintained but in in a limited distance normally up to 300 mm from the orifice For air assisted atomizers it is improper to use the term spray angle since no precise value can be measured Therefore the values given by Catalogues are to be intended as guidelines only

THEORETICAL SPRAY COVERAGE

at various distances from nozzle orifice

Spray 50 100 150 200 250 300 400 500 600 700 800 1000 Angle mm mm mm mm mm mm mm mm mm mm mm mm

15deg 13 26 40 53 66 79 105 132 158 184 211 263 25deg 22 44 67 89 111 133 177 222 266 310 355 443 30deg 27 54 80 107 134 161 214 268 322 375 429 536 35deg 32 63 95 126 158 189 252 315 378 441 505 631 40deg 36 73 109 146 182 218 291 364 437 510 582 728 45deg 41 83 124 166 207 249 331 414 497 580 663 828 50deg 47 93 140 187 233 280 373 466 560 653 746 933 60deg 58 116 173 231 289 346 462 577 693 808 924 1150 65deg 64 127 191 255 319 382 510 637 765 892 1020 1270 70deg 70 140 210 280 350 420 560 700 840 980 1120 1400 75deg 77 154 230 307 384 460 614 767 921 1070 1230 1530 80deg 84 168 252 336 420 504 671 839 1010 1180 1340 1680 90deg 100 200 300 400 500 600 800 1000 1200 1400 1600 2000 95deg 109 218 327 437 546 655 873 1090 1310 1530 1750 2180 100deg 119 238 358 477 596 715 953 1190 1430 1670 1910 2380 110deg 143 286 429 571 714 857 1140 1430 1710 2000 2290 2856 120deg 173 346 520 693 866 1040 1390 1730 2080 2430 2771 3464 130deg 215 429 643 858 1070 1290 1720 2150 2570 3002 3431 4289

WhereASCbull = Actual Spray CoverageTSCbull = Theoretical Spray CoverageASAbull = Actual Spray AngleTSAbull = Theoretical Spray AngleL bull = Spray Distances

TSC = 2 middot L middot ctan ( TSA )2

7

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LIQUID SPRAY AND SPRAY NOZZLES Spray angle

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SLIQUID SPRAY AND SPRAY NOZZLES Spray angle

Depending upon the nozzle design variations of feed pressure may have a great influence on the spray angle valueGenerally with increasing pressure turbulence full cone nozzles will produce narrower angles flat jet nozzles will show a wider angle spray while nozzles working on the deflection principle like spiral nozzles and K style flat jet nozzles will be less affected by pressure changesAll nozzles will not function properly with very low pressure values (from 05 bar down depending upon nozzle type ) with a marked decay in performance larger drops not well defined spray pattern lower spray angle values

The above pictures show spray angles for different nozzles and different pressure valuesShould your application strictly require that a given value of the spray angle is obtained under a given pressure value or pressure range of values please obtain a test report from our laboratories

Full cone nozze DDW 2235

Flat jet nozzleJCW 2245

Spiral nozzeECW 2230

Pressure 05 bar Pressure 05 bar Pressure 05 bar

Pressure 3 bar Pressure 3 bar Pressure 3 bar

Pressure 10 bar Pressure 10 bar Pressure 10 bar

Photo obtained with 120000s flashlight

picture 1

picture 4

picture 7

picture 2

picture 5

picture 8

picture 3

picture 6

picture 9

NotePicture 2 shows clearly the droplet generation mechanism as described at page 15

23wwwpnr-nozzlescomCTG SH 07 EU

Terms and definitions

A very important characteristic of a spray nozzle is a parameter called Spray Distribution which gives a precise information about how evenly the drops of the spray are distributed onto the area covered by the sprayIt is self understood that normally it is preferable to obtain the most even distribution possibleIn the past this was done through the visual examination of a diagram reporting the quantity of water contained for example in glass pipes aligned onto the spray coverage areaPnr has determined to obtain such a result in a scientific way through high technology instrumentation as shown in the pictures below showing one of our patternators and a typical distribution diagram

Now to the spray geometry and some definition letrsquos consider a nozzle with a capa-city Q at the pressure PAt every value for distance H which we call height of spray we can define a plane lsquonrsquo normal to the nozzle axis on which a line can define the intersection of the spray onto the planeThe area covered by the spray on the plane lsquonrsquo has a surface S depending from the following parametersa) Spray pattern Fb) Opening angle of the spray αc) Height of the spray H

We can then write S=S( F α H )

In case of a full cone nozzle S is a circle with diameter C and S = 0785 C2

The capacity of the nozzle flows through the surface S but each smaller area inside the surface S will probably have a different value for the flow passing through itWe introduce then the value of Specific Capacity q

1) Specific Capacity

The function q depends upon the single point (xy) in the section S and then

Determining the function q is however very expensive therefore in practice two different functions are used which give in most occurrences sufficient information

2) Linear Distribution

3) Angular distribution

part Qpart x

qx =

Diagram 1

q = limΔS 0

ΔQΔS

q = = f (x y H)part Qpart S

part Qpart φ

qφ =

ΔQ is the liquid flowing through a surface ΔSwhere ΔS is a fraction of the surface S

x and y are the local coordinates in the section planewhere H is the distance of the test surface from the nozzle orifice

partQ is the variation in capacitywhere partx is the variation of a generic linear coordinate

partQ is the variation in capacitywhere partφ is the variation of a generic angular coordinate

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LIQUID SPRAY AND SPRAY NOZZLES Spray Distribution

24 wwwpnr-nozzlescom CTG SH 07 EU

LIQUID SPRAY AND SPRAY NOZZLES Spray Distribution

Values extracted from these functions can characterize the spray and allow for drawing the diagrams defined as Distribution Curves

Analyzing the above curves it is possible to determine the type of water distribution along the spray coverage and the type of spray pattern like for example a full cone hollow cone flat or straight jet spray

Distribution measurement

The water distribution along the spray coverage is determined by means of an instrument called Patternator

A patternator consists of the following parts 1) Liquid collector2) Cell block3) Measure block4) Unloading block

The nozzle is above the instrument and it is orienta-ted in such a way the jet is collected into the upper liquid collectorThe liquid collector can be linear ( diagram 5 ) or round ( diagram 6 ) according to the test being runFrom the single parts in the collector the liquid is sent into the corresponding cells below (2)

The Measure block (3) determines the liquid content in each single cell then the unloading block (4) empties the instrument sending the liquid to the collection drain

There are two types of patternators

Analogic1 the different levels of liquid is visible through the transparent walls of the cells or pipes sometimes containing some kind of floating balls and a picture can be taken with a cameraDigital2 Delivering an automatic reading of the values in the cells the values being supplied as an electronic file from which a distribution curve can be easily obtained

Diagram 2 Linear distribution Diagram 3 Angular distribution

Diagram 4

Diagram 6 Circular collectorDiagram 5 Linear collector

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LIQUID SPRAY AND SPRAY NOZZLES Spray Distribution

Normalizing distribution curve

The values obtained from the cells of the patternator showing the water quantity collected in the single cells allow for preparing a Distribution curve which can be given as a single line curve or as a row of vertical barsThese resemble the liquid level collected into the glass pipes of the old type instrumentation

The curves prepared based on the liquid level in the single cells still are not precise they depend in fact from the testing time the longer this time the larger the liquid quantity sprayedTo eliminate the influence of time from the test it is necessary to transform the effective curves to normalized curves

Normalized4) linear distribution

Normalized5) angular distribution

Please note that Maximum value is the one belonging to the series of values measured in the cellsIn addition to the distribution it is possible to normalize the intervals to with the following formulas

Normalized 6) linear interval

Normalized 7) angular interval

The linear normalized amplitude is defined inside an interval [-1 +1]The angular normalized amplitude is defined inside an interval [0+2π]

Diagram 7 Effective linear distribution curve Diagram 8 Effective angular distribution curve

Mx

xx q

q=δ

N

πθ

2=Δ

Diagram 9 Normalized linear distribution curve Diagram 10 Normalized angular distribution curve

qx is the linear distribution of a generic cellwhere qx

M is the maximum linear distribution measured

qφ is the linear distribution of a generic cellwhere qφ

M is the maximum linear distribution measured

2 is the normalized linear amplitude of the spraywhere N is the number of active cells (active cells = cells containing liquid)

2π is the normalized angular amplitude of the spraywhere N is the number of active cells (active cells = cells containing liquid)

Mq

q

ϕ

ϕϕδ =φ

φ

φ

2

N=Δλ

2

N=Δλ

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26 wwwpnr-nozzlescom CTG SH 07 EU

Evaluation of spray distribution

To evaluate distribution curves it is necessary to take three properties into consideration

a) UNIFORMITY b) MONOTONY c) SIMMETRY

As described in the following diagrams and definitions

a) UNIFORM A distribution that minimizes the ratio AAdeg

b) MONOTONE Is a distribution with a curve which grows on the left side and decreases on the left side c) SYMMETRIC Is a distribution which minimizes the Ratio A+A-

Based on the above definitions the following curves show the ideal situations

The three properties are then evaluated by means of the following parameters

1 Integral uniformity

2 Incremental uniformity

3 Symmetry index

Complete details about the above formulas and definition can be found in our Technical Bulletin REL 080002 which shall be released from our Technical Department on request

Diagram 12Normalized and monotone distribution

Diagram 11Normalized and monotone distribution

Diagram 14Ideal monotony

Diagram 15Ideal symmetry

Diagram 13Ideal uniformity

1001 sdot=MA

AU

1002

2 sdot=lowastσ

U

1001

sdot⎥⎦

⎤⎢⎣

sdotminus=

lowast

lowast

δ

ε

NI S

sum minus=lowast

M

i iδδε

A is the area included in the normalized curvewhere Adeg is the rest of the area included in the 2x1 rectangle

Left side is the area -1 0where Right side is the area 0 +1

A+ is the area included below the curve on the right sidewhere A- is the area included below the curve on the left side

where

where δrsquo is the value of normalized liquid content in the symmetric cell N number of cells containing liquid in half of the diagram

lowast

lowast sum=

N

N

i i

δ

δ N Number of cells containing liquid

A area included below the curve AM area included below the ideal curvewhere

sum minus= +lowast

1

N

i ii δδσ

N Number of cells containing liquid

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SLIQUID SPRAY AND SPRAY NOZZLES Spray Distribution

27wwwpnr-nozzlescomCTG SH 07 EU

Liquids are characterized for their property of undergoing continuous deformation when subjected to shear stress The property of fluids (liquids or gases) to resist flowing due to the existence of internal friction within the fluid is called visco-sity

Thus if we imagine the different layers of fluid sliding one over the other with friction we can imagine that viscosity is defined the force required to move a unit area of fluid for a unit distance Viscosity is measured with many different systems among which the most used are the following

The following table shows correspondences between the most used viscosity units

The viscosity value of a liquid depends upon the temperature therefore the viscosity value must always be given with reference to a temperature value The viscosity of water (20deg C) is 1 Centipoise and 1 Centistoke since water mass density = 1

KINEMATIC SAYBOLT SAYBOLT ENGLER VISCOSITY UNIVERSAL FUROL

Centistoke Sq feetsec SSU SSF Degrees

100 000001076 310 --- 100

500 000005382 424 --- 137

1000 00001076 588 --- 183

1566 00001686 80 --- 245

2052 00002209 100 --- 302

2515 00002707 120 --- 357

4295 00004623 200 --- 592

1080 0001163 500 523 1460

1510 0001625 700 720 2044

1942 0002090 900 921 2628

3023 0003254 1400 143 4090

3885 0004182 1800 183 5260

5394 0005806 2500 254 7300

10788 001161 5000 509 146

15103 001626 7000 712 204

19419 002092 9000 916 263

32365 003483 15000 1526 438

METHOD UNIT DIMENSIONS NOTES

1 Dynamic viscosity(Absolute viscosity) Poise ML T-1 Poise = 100 Centipoises = (1 dyne per seccm2)

2 Kinematic viscosity Stoke L2 T-1 1 Stoke = 100 Centistoke = (cm2sec)Kinematic viscosity = Dynamic viscositydensity

3 SSUSSF

One of the most widely instruments to determine is the Saybolt viscosimeter which measures the time in seconds required for a fixed volume of a given liquid to flow through an orificeSSU = Seconds Saybolt Universal relates to a smaller orifice for less viscous liquidsSSF = Seconds Saybolt Furol relates to a larger orifice for more viscous liquids

LIQUID SPRAY AND SPRAY NOZZLES Influence of liquid viscosity

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28 wwwpnr-nozzlescom CTG SH 07 EU

Viscosity influence on nozzle flow rate

AlI nozzle Catalogue data refer to spraying water (water cinematic viscosity is equal to 1 Centistoke)A liquid with viscosity higher than water will require more energy to be pumped and sprayed and will flow with lower velocity at the same pressure and this will cause a reduction in the turbulence of the flow For the above reason nozzles working on the turbulence principle like normal full cone nozzles and whirl hollow cone nozzles will show an increase in capacity while spraying liquids with viscosity higher than water This increase is very consistent for small size nozzles where the small radius of the whirl chamber tends to cause high turbu-lence in the flow and tends to diminish and to disappear for nominal capacity valves (capacity values at 3 bar) larger than 15 liters per minute

The graph below shows for a liquid with a viscosity of about 4 Centistokes typical variations in the nozzle flow rate value for different values of the nozzle whirl chamber diameter As it may be seen these variations can be neglected in most practical applications where nozzles with whirl chamber diameters well over 3 mm are used

For other types of nozzles not working on the turbulence principle the increase on viscosity will simply reduce the liquid exit velocity at the orifice thus causing a decrease in capacity Experience shows that this decrease ranges between 3 and 6 of nominal water capacity that is to say that the variation introduced is in the same order of magnitude as the nozzle flow rate toler-ance

Viscosity influence on nozzle spray angle and spray pattern

With reference to the theory of jet break-up and droplet information it can be easily imagined that spraying a liquid more viscous than water is a difficult task

Al the properties of the spray tend to worsen therefore one can expectA higher value for the minimum operating pressure that is the pressure value which allows for obtaining a well defined 1 spray with the expected spray angle A worse spray distribution since the viscous behavior of the liquid makes it more difficult to pro-duce fine droplets and 2 to distribute them evenly with the desired spray pattern A narrower spray angle It is difficult to give guidelines since results on different nozzles at different pressures and with 3 different liquids are scarcely predictableHowever our experience shows that in many cases the use of impact nozzles can give acceptable results where all other type of nozzle failsA laboratory test or a field test are stili the safest way to obtain sound results

50

45

40

35

30

25

20

15

10

5

0 2 3 4 5 6 7 8 9

Increase Flow rate vs Whirl Chamber Diameter

Incr

ease

Flo

w R

ate

[mm

]

Whirl Chamber Diameter [mm]

LIQUID SPRAY AND SPRAY NOZZLES Influence of liquid viscosityLI

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29wwwpnr-nozzlescomCTG SH 07 EU

With reference to the Bernoulli Rule as exposed in page 6 one can say that the pressure energy of the liquid flow at the nozzle inlet is transformed totally (minus some losses due to friction inside the nozzle) into liquid velocity at the nozzle orificeCatalogue figures give nozzle capacities when spraying waterIf the specific gravity or density of the liquid is different from that of water the available pressure energy will produce a different liquid velocity at the nozzle orificesIn other words a given quantity of energy will spray always the same quantity of liquid mass but different volumes (flow rates) according to the liquid specific gravity or density

Therefore a liquid heavier than water will exit the nozzle with a lower velocity at lower flow rate while to the contrary a liquid lighter than water will be sprayed at higher velocity at higher flow rate

The following formula is to be applied

The table below gives the value of a correction factor to obtain the flow rate of a liquid with different specific weight as water

WhereQL Liquid flow rateQW Water flow rateF Correction factor

kgliter Libregallon F

06 50 129

07 58 120

08 67 112

09 75 105

10 83 100

11 92 095

12 100 091

13 109 088

14 117 085

15 125 082

16 134 079

17 142 077

18 150 075

19 159 073

20 167 071

QL = F QW8

LIQUID SPRAY AND SPRAY NOZZLES Influence of liquid specific gravity

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30 wwwpnr-nozzlescom CTG SH 07 EU

The spraying water impact of a nozzle depends on several factors and more precisely spray distribution pattern and spray angle The first step to calculate the impact value which is usually expressed in Kilograms per square centimeter is to deter-mine Total Theoretical lmpact Value using the following formula

The obtained value has to be multiplied by the Total Theoretical Impact per Square Centimeter Coefficient (E)The final value is the Spraying Liquid Impact expressed in kgpcm2Of course not alI the energy of the fluid vein is transferred to the impact point

A part of this energy sometimes a considerable part goes to obtain a desired spraying angle by having the liquid vein acquire a high rotational speed inside the whirl chamber The highest value of impact is obtained with straight jet nozzle and the value can be calculated multiplying spraying pressure per 19The tables below containing the Total Theoretical Impact sqcm coefficient values for different spray pattern nozzles for a dis-tance of 300 mm

[kgpcm2]

TOTAL THEORETICAL IMPACT PER SQ CM COEFFICIENT AT DISTANCE OF 300 MM (E)

Spray Flat jet nozzle Spray Full cone nozzle Spray Hollow cone nozzle Angle Angle Angle

15deg 0300 15deg 0110 25deg 0180 35deg 0130 30deg 0025 40deg 0120 50deg 0100 50deg 0010 65deg 0070 65deg 0004 60deg80deg 001002 80deg 0050 80deg 0002 100deg 0001

WhereQ is the flow rate at working pressure in lpmP is the pressure value in kgpcm2

[kgpcm2]TTI = 0024 Q P

SLI = E TTI

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SLIQUID SPRAY AND SPRAY NOZZLES Jet impact

31wwwpnr-nozzlescomCTG SH 07 EU

Jet impact diagram

A further parameter to characterize the performance of a spray nozzle is the distribution of the jet impact force which could be derived by means of mathematical methods from the values of the spray distribution onto the surface covered by the spray but which can more easily be measured with the help of specifically designed instrumentation

In some applications the jet impact force Is the most important parameter used to realize the required processSteel sheet descaling in a rolling mill is a typical example where the jet impact is required to take away the surface scale and obtain a perfectly even surfaceFor that reason special nozzles have been developed to perform this very task where service life impact value and spray distribution reach the values required for satisfactory resultThese test are performed in a laboratory equipped with a specifically designed instrumentation where the high pressures involved in these process can be reached which can measure the pressure values along a matrix of points distributed in the spray area covered by the nozzle

These values are supplied both in a table of values and as a 3D pressure diagram similar to those shown below

On such applications where producing high impact values in the jet is necessary it is of paramount importance that the liquid flow turbulence is kept to a minimum and therefore it is widely used to insert into the nozzle entrance devices designed to improve the operating conditions by forcing the liquid flow through straight passages with several different shapes by doing so the impact delivered by the spray is increased with the same feed pressure

One typical shape used by Pnr is shown on the right and the two dia-grams below show the impact force diagrams for the same nozzle with and without a flow straightener the reduction of flow turbulence can lead in increase of impact force often higher than 20Further improvements of course are available when the nozzle inside profile is properly designed in order to avoid sharp cross section changes and all surfaces are finished as smoothly as possible

Typical design of a Pnr flow straightener

Impact pressure diagram with flow straightenerImpact pressure diagram without flow straightener

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32 wwwpnr-nozzlescom CTG SH 07 EU

LIQUID SPRAY AND SPRAY NOZZLES Pressure drop through a nozzle

Pressure drop through a nozzle

Some of our customers have asked us In the past which Is the pressure drop through a nozzle since they consider a nozzle one of the parts in a piping like a valve or an elbow which causes a given pressure drop along the line

The reality is different and can be easily understood when considering the Bernoulli formula [2] as given at page 19 of this manual the formula says that the total energy of a liquid flow is made from the addition of three facors

Potential energy due to elevationbullPressure energybullVelocity energybull

When we apply the formula at the entrance and at the outlet ( the orifice ) of a nozzle and we neglect the influence of turbulence losses in between we can easily see that

The potential energy variation can be neglected because of the limited dimensions of the nozzle since the distance bullbetween the nozzle entrance and the nozzle orifice plays no role-The pressure energy variation is important since the liquid pressure value falls abruptly from the pressure inside the feed bullpipe to the ambient pressureThe velocity energy variation is also consistent since the liquid is ejected from the orifice at high speedbull

In other words the pressure energy of the liquid flowing through the orifice is suddenly transformed in liquid drops velocity which is exactly what a nozzle is designed to do

This is shown from equation [3] at page 19 which allows the exit velocity from the nozzle to be calculated from the pressure inside the pipe ( we actually consider the pressure difference between the inside of the pipe and the ambient pressure in this formula )

In other words all the energy still available at the nozzle is converted into velocity or if you so prefer you have a total pressure fall The system designer shall therefore evaluate all the pressure drop between the pump outlet flange and the nozzle entrance in order to be sure that the nozzle feed pressure is sufficient to assure the desired capacity for the liquid being sprayed

parameters valuesat nozzle outlet

nozzle inlet nozzle oulet or orice

feed pressure

inlet velocity

parameters valuesat the nozzle inlet

(A)potential elevation

energy

(A)velocity ( kinetic ) energy

(A)pressure energy

ambient pressure

exit velocity

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NOZ

ZLE

MAT

ERIA

LS

The choice of the right material for a nozzle is sometimes the most important one to do since the nozzle operating life depends upon it There are several factors to influence or shorten the nozzle operating life sometimes more than one at the same time the most important being

Wear from solid particles suspended into the liquid being sprayed1 Chemical corrosion from the liquid being sprayed 2 Chemical corrosion from the ambience outside the nozzle3 Exposure to high temperature 4 Exposure to mechanical shocks5

NOZZLE MATERIALSPnr material codes 34Properties of materials 35Mechanical properties of materials 39Chemical resistance of materials 40

NOZZLE MATERIALS

34 wwwpnr-nozzlescom CTG SH 07 EU

PNR has adopted a short code to identify construction materials for nozzles and nozzle partsHere below the most frequenty used materials

MATERIAL STANDARDS

The following standards are mentioned with reference to materials identification

NOZ

ZLE

MAT

ERIA

LS

A1 Free Cutting Steel E1 TEFLONreg (PTFE) L3 NICROFERreg 5923

A2 Carbon Steel E3 DELRINreg (POM) L4 STELLITEreg 6

A8 Zinc Plated Mild Steel E6 PERSPEXreg (PMMA) L5 HASTELLOYreg B2

A9 Nickel Plated Mild Steel E7 VITONreg (FPM) L6 HASTELLOYreg C4

B2 AISI 304 Stainless Steel E8 NBR- Sh 70 Rubber L61 HASTELLOYreg C22

B3 AISI 316 Stainless Steel E81 SANTOPRENEreg Rubber L62 ULTIMETreg

B31 AISI 316L Stainless Steel E82 KLINGERITEreg L7 NICKEL 201

B4 AISI 321 Stainless Steel E83 HYPALONreg L8 HASTELLOYreg C276

B8 AISI 309 Stainless Steel E91 Silicon L9 SANICROreg 28 SS

B81 AISI 310 Stainless Steel F12 Tungsten Carbide (TC) N1 AISI 302 Stainless Steel

C1 AISI 420 St Steel hardened F2 PIREXreg P6 ABS

C4 AISI 317 Stainless Steel F3 Rubin P7 FASIT OIL

C6 SAF 2205 Stainless Steel F4 Zapphire P8 EPDM ShA Rubber

D1 Polyvinylchloride (PVC) F5 Ceramic P9 STIROLUXreg 637

D2 Polypropylene (PP) F6 Silicon Carbide (SC) T1 Brass

D3 Polyamide (PA) G1 Cast Iron T3 Copper

D5 Powder Charged PP H1 Titanium T5 Bronze

D6 Fiberglass Charged PP L1 MONEL 400 T8 Nickel Plated Brass

D7 High Density Polyethylene L2 INCOLOYreg 825 V1 Aluminium

D8 Polyvinylidenefluoride (PVDF) L21 INCONELreg 600 V7 Aluminium ENP

STANDARD ORGANIZATION COUNTRY STANDARD CODE

AFNOR Association Franccedilaise de Normalisation France NF

AISI American Iron and Steel Institute USA AISI

ANSI American National Standards Institute USA ANSI

ASTM American Society for Testing and Materials USA ASTM

BSI British Standards Institution UK BS

DIN Deutsches Institut fuumlr Normung Germany DIN

DSIT Dansk StandardsInformation Technology Denmark DS

ISO International Organization for Standardization International ISO

JIS Japanese Institute for Standard Japan JIS

UNI Ente Nazionale di Unificazione Italy UNI

NOTEThe complete list of the Materials Codes may be requested to our Technical Service mentioning release code TGCE CODMAT

NOZZLE MATERIALS PNR material codes

35wwwpnr-nozzlescomCTG SH 07 EU

NOZ

ZLE

MAT

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LS

B1 AISI 303 STAINLESS STEEL

Chemical composition CR 1750 NI 850 S 025 Coding correspondence

Type Stainless Steel Austenitic AISI 303

Hardening Not possible BS 303 S 21

Annealing 1050 1100deg C in water DIN Wnr 14305

Welding Possible with precautions Euro X10CrNiS1809

Corrosion properties

Good resistance Atmospheric exposure food substances organic chemicalsLow resistance Chlorides reducing acids and over 800deg C

JIS SUS 303

NF Z6CN 18-09

SIS 2346

UNI XWCrNiS 1809

B3 AISI 316 STAINLESS STEEL

Chemical composition C 005 CR 170 NI 120 MO 225 Coding correspondence

Type Stainless Steel Austenitic AISI 316

Hardening Not possible BS 316 S 21

Annealing 1050 1100deg C in water DIN Wnr 14401

Welding Easy using same steel electrodes Euro X6CrNiMo17122

Corrosion properties

Good resistance Atmosphere great number of salts organic acids foodsLow resistance Solutions of reducing acids temperatures over 500deg C

JIS SUS 316

NF Z6CND 17-11

SIS 2347

UNI X5CrNiMo1712

B31 AISI 316L STAINLESS STEEL

Chemical composition C 003 CR 170 NI 130 MO 225 Coding correspondence

Type Stainless Steel Austenitic AISI 316 L

Hardening Not possible BS 316S12

Annealing 1050 1100deg C in water DIN Wnr 14404

Welding Easy using same steel electrodes Euro X3CrNiMo1810

Corrosion properties

Good resistance Atmosphere great number of salts organic acids foods salt waterLow resistance Solutions of reducing acids temperatures over 500deg C

JIS SUS 316L

NF Z2CND17-12

SIS 2348

UNI X2CrNiMo 1712

NOZZLE MATERIALS Properties of materials

36 wwwpnr-nozzlescom CTG SH 07 EU

C1 AISI 420 STAINLESS STEEL

Chemical composition C 020 CR 1300 Coding correspondence

Type Stainless Steel Martensitic AISI 420

Hardening 980deg - 1030deg C in oil BS 420 S 29

Annealing 750deg - 800deg C in air DIN Wnr 14021

Welding Possible with precautions Euro X20Cr13

Corrosion properties Good resistance Drinkable water steamgasoline oil alcohol ammonia

JIS SUS 420 J1

NF Z20C13

SIS 2303

UNI X20Cr13

C2 AISI 416 STAINLESS STEEL

Chemical composition C 012 CR 1250 S 022 Coding correspondence

Type Stainless Steel Martensitic AISI 416

Hardening 950deg - 1100deg C in oil BS 416 S 21

Annealing 750deg - 800deg C DIN Wnr ---

Welding Not possible Euro X120CrS13

Corrosion properties Good resistance Drinkable water steamgasoline oil alcohol ammonia

JIS SUS 416

NF Z12CF13

SIS ---

UNI X12CrS13

D8 POLYVINYLIDENE FLUORIDE (PVDF)

Description HIGH-MOLECULAR WEIGHT THE TOUGHEST OF THE FLUOROCARBON RESINS

Trade names amp SuppliersKYNAR (Atochem North America Inc formerly Penwalt Corporation)

SOLEF (Solvay Polymer Corporation)

Physical andMechanical Properties

Excellent resistance to abrasion and stress fatigue

Extremely pure opaque white resin

Thermal Properties UsefuI in temperatures ranging from -73 149degC (-100 300degF)Heat deflection temperature is (8090deg C at 182 Bars (176 194deg F at 264 psi)

Chemical Compatibility

Excellent chemical resistanceCan be used with wet or dry halogens most strong acids and bases aliphatics aromaticsalcohols and strong oxidizing agentsNot recommended for contact with ketones esters amines and some organic acids(fuming sulfuric acid)

NOZZLE MATERIALS Properties of materialsN

OZZL

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ATER

IALS

37wwwpnr-nozzlescomCTG SH 07 EU

E1 POLYTETRAFLUOROETHYLENE (PTFE)

Description FLUOROPLASTIC THAT HAVE SOME OR ALL OF THEIR HYDROGEN MOLECULESREPLACED BY FLUORINE

Trade names amp Suppliers

TEFLON TFE FEP and PFA (Dupont Polymer Products)

NEOFLON (Daikin)

FLUON (ICI Americas Inc)

SST-2SST-3 (Shamrock Technologies Inc)

Physical andMechanical Properties

Low coefficient

Low adhesiveness

Buona resistenza agli agenti atmosferici

Good weatherabilityLow resistance to creep and wear unless reinforced with glass figravebers which results in superior resistance

Thermal Properties High and low temperature stabilityHeat deflection temperatures range from 4855deg C at 182 bar (118-132deg F at 264 psi)

Chemical CompatibilityChemically inert

Totally insoluble

E3 ACETAL (ACETAL HOMOPOLYMERS AND COPOLYMERS)

Description HIGHLY CRYSTALLINE RESINS BASED ON FORMALDEHYDE POLYMERIZATION TECHNOLOGY

Trade names amp Suppliers

DELRIN (Dupont Polymer Products Corporation)

CELCON (Hoechst Celanese Corporation)

ULTRAFORM (BASF Corporation)

RTP 800 (RTP Corporation)

LUPITAL amp TENAL (Franklin Polymers Inc)

FULTRON 404 (ICI Americas Inc)

Physical andMechanical Properties

High tensile strength rigidity and esilience

High fatigue endurance

Excellent dimensional stability

Low coefficient of friction

Outstanding abrasion and wear resistance

Excellent creep resistance

Thermal Properties Heat deflection temperatures range from 110 -136deg C at 182 bars(230 - 270deg F at 264 psi) higher if glass figravelled

Chemical Compatibility

Remains stable in long-term high temperature water immersionExcellent resistance to chemicals and solvents but prolonged exposure to strong acids not recommendedNote Suitable for close-tolerance high-performance partsAvailable for machined parts or may be injection molded

NOZZLE MATERIALS Properties of materials

NOZ

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L6 HASTELLOY C4

PHYSICAL AND MECHANICAL PROPERTIES CHEMICAL COMPOSITION CORROSION RESISTANCE

R = 650800 Mpa C = 0015 max

Very good against pitting and tensile-corrosion specially in oxydizing atmosphereResistance in welded joints definitely better than C 276 lower than C22

Rp02 = 250470 Mpa Ni = 65

HRB = 90 Cr = 160

Mo = 155

W = --

Fe = 3 max

Ti = 05

Co = 2 max

APPLICATIONSRecommended for applications with strongly oxidizing atmosphere

L61 HASTELLOY C 22

PHYSICAL AND MECHANICAL PROPERTIES CHEMICAL COMPOSITION CORROSION RESISTANCE

R = 700800 Mpa C = 001 max

Excellent performances with oxydizing atmospheres as well as for pitting and tensile-corrosion conditionsVery good resistance in reducing atmospheres and for welded joints

Rp02 = 360420 Mpa Ni = 56

HRB = 93 Cr = 22

Mo = 13

W = 3

Fe = 3

Ti = --

Co = 25 max

APPLICATIONSChemical industry (gas ducts gas washing and treatment systems phosphoric acid production) Heat exchangers pumps chlorination reactors

L8 HASTELLOY C 276

PHYSICAL AND MECHANICAL PROPERTIES CHEMICAL COMPOSITION CORROSION RESISTANCE

R = 600800 Mpa C = 0015 max

Very good in reducing and oxydizing atmospheresVery good against pitting and tensile-corrosionAcceptable resistance in welded jointsIn cast parts excessive segregation not eliminated by thermal treatment of annealing makes it convenient to use C22 or C4 qualitieswhich assure better corrosion resistance and mechanical properties

Rp02 = 300370 Mpa Ni = 57

HRB = 90 Cr = 145165

Mo = 1517

W = frac345

Fe =

V = 035 max

Co = 25 max

APPLICATIONSChemical industry (air ducts scrubbers fans) Paper industry Thermoelectric plants Steel thermal treatments

NOZ

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39wwwpnr-nozzlescomCTG SH 07 EU

MATERIALTENSILE STRENGHT

CORROSION RESISTANCERp 02 R

20degC 800degC 20degC 800degC

(68degF) (1408degF) (68degC) (1408degC)

AISI 302 280 100 680 200

Good sensitive to corrosionbetween grains for slow heatingand cooling in the 450-900deg Crange temperature

AISI 303 280 100 680 200 Discrete

AISI 304304L 270 90 600 100Good especially for 304L304 sensitive to corrosionbetween grains like AISI 302

AISI 309 250 100 640 220 Good Sensitive to corrosion between grains like AISI 302

AISI 310 310 170 650 270Good (gt 304 - 304L)Sensitive to corrosionbetween grains like AISI 302

AISI 316316L 270 110 560 220 Very high especially for 316L

AISI 321 210 100 540 140 Good

AISI 347 280 120 620 200 Good

AISI 416 620 70 750 90

Good in medium corrosive ambient (atmosphere water gasoline alcohol N1-13 foods)Not in high corrosive

BRASS 110-150 --- 360-410 --- Good especially when nickel plated

BRONZE 100-300 --- 200-600 --- Discrete especially with sea water

CAST IRON le 500 V 100-800 V

NICKEL ALLOYS 100-1000 V 300-1300 VVery high also for high temperature To use in the temperaturerange 800-1200deg C

PLASTICS --- --- 20-200 ---

Good also for erosionGenerally they are attackedwith oxidizers like nitric acidhalogens ect

PTFE --- --- 30-40 ---

Very high except for elementarystate of alkaline metalsand to compounds containingfluorine at high temp

DUPLEX STEEL gtAISI 3 gtAISI 3 gtAISI 3 gtAISI 3 Very high also with high temperatureand also for pitting

TITANIUM alloy 195-850 V 300-900 VVery high in oxidizing ambientVery low in reducing ambient and with compounds containing fluorine

Legend Rp 02 = 02 YIELD STRENGHT [MPa]R = ULTIMATE TENSILE STRENGHT [MPa]V = To verify time by time

NOZZLE MATERIALS Mechanical properties of materials

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PIPINGPipes data 74Economic pipe sizes 75Pressure drop in clean steel pipes 76Flange dimensions 78Sieve size conversion chart 80

PIPING

74 wwwpnr-nozzlescom CTG SH 07 EU

The following table report the data of pipes according to ANSI B3619 that is one of the most used standards that regulate welded stainless steel pipes

DN NPS OD[mm]

SCHEDULE

5S 10S 40SSTD 80SXS

t m t m t m t m

[mm] [kgm] [mm] [kgm] [mm] [kgm] [mm] [kgm]

6 18 103 NA NA 124 028 173 037 241 048

8 14 137 NA NA 165 050 224 064 302 081

10 38 172 NA NA 165 064 231 086 320 112

15 12 213 165 081 211 101 277 128 373 164

20 34 267 165 103 211 130 287 171 391 223

25 1 334 165 131 277 212 338 254 455 328

32 1frac14 422 165 167 277 273 356 344 485 453

40 1frac12 483 165 192 277 315 368 411 508 549

50 2 603 165 242 277 399 391 551 554 759

65 2frac12 730 211 374 305 534 516 875 701 116

80 3 889 211 458 305 655 549 115 762 155

90 3frac12 1016 211 525 305 752 574 138 808 189

100 4 1143 211 592 305 849 602 163 856 226

125 5 1413 277 960 340 117 655 221 953 314

150 6 1683 277 115 340 140 711 287 1097 432

200 8 2191 277 150 376 202 818 431 1270 656

250 10 2730 340 229 419 282 927 611 1270 827

300 12 3239 396 317 457 365 953 749 1270 988

350 14 3556 396 348 478 419 NA NA NA NA

400 16 4064 419 421 478 480 NA NA NA NA

450 18 457 419 474 478 541 NA NA NA NA

500 20 508 478 602 554 696 NA NA NA NA

550 22 559 478 662 554 767 NA NA NA NA

600 24 610 554 837 635 959 NA NA NA NA

Where

DN = Nominal diameter NPD = Nominal Pipe Size OD = Outside Diameter t = Wall Thickness m = Specific WeightPIPI

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PIPING Pipes data

75wwwpnr-nozzlescomCTG SH 07 EU

The following Specific Pressure Drops (Y) are normally used in the good engineering practice(where Y=ΔPL ΔP Pressur Drop and L Pipe Lenght)

For pipe sizing the Velocity (V) is also usedIn the following table are shown the typical liquid velocities in steel pipes

Some fixed pressure drop values indicationsfor gate valves (fully open) consider a pressure drop of 5 metersbullfor normal bends consider a pressure drop of 5 metersbullfor a check valve consider a pressure drop of 15 metersbull

In the succeeding tables we show the velocity and specific pressure drop for several flow rates and pipe diameters

Not boiling waterY = 02divide05 bar100 m for pump discharge (07 bar100 m max if P gt 50 bar)

Y lt 0110 bar100 m for pump suction

Boiling water Y = 004divide005 bar100 m for pump suction (velocity = 03divide09 ms)

LIQUID LINE TYPE

Specific Pressure Dropsvs Velocity [ms]

0 lt V lt 2 3 lt V lt 10 10 lt V lt 20

NOT BOILING WATER

Pump suctionPump discharge (long)Discharge leads (short)Boiler feedDrainsSloped sewer

03 divide 0606 divide 0912 divide 2712 divide 2709 divide 12

-

06 divide 1209 divide 1515 divide 3715 divide 3709 divide 1509 divide 15

09 divide 1812 divide 2124 divide 4224 divide 42

-12 divide 21

HYDROCARBON LIQUIDS(normal viscosity)

Pump suctionDischarge heather (long)Discharge leads (short)Drains

05 divide 0808 divide 1112 divide 2709 divide 12

06 divide 1209 divide 1515 divide 3709 divide 15

09 divide 1812 divide 2124 divide 46

-

MEDIUM VISCOSITY OILPump suctionDischarge (short)Drains

--

03

05 divide 0901 divide 0209 divide 15

08 divide 1501 divide 0312 divide 18

OTHER WATERCooling tower Chilled waterSea water and generally foulingwater (long pipes) ()

06 divide 09 09 divide 15 12 divide 21

Note () In this case Cameron method has to be used with C=1 Y = 005 divide 012 bar100 m for principal manifold Y = 012 divide 023 bar100 m for secondary manifold

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PIPING Economic pipe sizes

76 wwwpnr-nozzlescom CTG SH 07 EU

18rdquo 14rdquo

1 0350 0370 0200 0090 38rdquo 12rdquo

2 0705 1340 0395 0331 0223 0082 0145 0029 34rdquo

3 1060 2890 0593 0673 0333 0176 0217 0061 0125 0016 1rdquo

4 1410 4940 0788 1150 0444 0291 0290 0101 0167 0027 0110 0010

5 1760 7460 0985 1750 0556 0424 0362 0149 0209 0040 0137 0014

6 1180 2460 0667 0594 0434 0207 0251 0054 0165 0019 114rdquo

8 1580 4060 0892 1020 0579 0351 0335 0091 0219 0033 0126 0009 112rdquo

10 1110 1530 0724 0534 0418 0136 0274 0049 0158 0012 0116 0006

15 1670 3250 1090 1130 0627 0284 0411 0099 0236 0026 0174 0012

20 2rdquo 2230 5600 1450 1900 0836 0481 0549 0168 0315 0043 0233 0021

30 0212 0013 212rdquo 2170 4130 1250 1020 0823 0353 0473 0092 0348 0043

40 0283 0022 0190 0007 2900 7180 1670 1760 1100 0606 0631 0155 0465 0073

50 0354 0032 0237 0012 2090 2700 1370 0911 0789 0233 0581 0108

60 0424 0044 0284 0017 2510 3810 1650 1290 0943 0321 0697 0150

70 0495 0079 0332 0022 3rdquo 2930 5120 1920 1720 111 0434 0814 0199

80 0566 0074 0379 0028 0248 0010 312rdquo 2190 2210 126 0554 0925 0253

90 0636 0093 0427 0035 0279 0013 0209 0006 2470 2770 142 0692 1040 0319

100 0707 0114 0474 0043 0310 0015 0232 0007 4rdquo 2740 3400 158 0843 1160 0392

150 1060 0238 0711 0090 0464 0031 0349 0016 0272 0008 4110 7440 236 181 1740 0828

200 1410 0414 0948 0153 0619 0053 0466 0027 0362 0014 315 314 2330 1450

250 1760 0625 1190 0233 0774 0080 0581 0040 0453 0021 5rdquo 2900 2200

300 2120 0889 1420 0324 0930 0112 0698 0055 0543 0030 0352 0011 3480 3070

350 2470 1190 1660 0438 1080 0150 0815 0074 0634 0040 0411 0014 6rdquo 4070 4160

400 2830 1550 1900 0563 1240 0195 0935 0096 0724 0051 0469 0018 0341 0007 4650 5380

450 3180 1930 2130 0707 1390 0242 1050 0120 0815 0063 0528 0022 0366 0009 5230 6790

500 3540 2380 2370 0867 1550 0298 1170 0147 0902 0076 0587 0027 0407 0011

550 3880 2870 2610 1040 1700 0354 1280 0174 0991 0092 0645 0032 0447 0013

600 4240 3390 2840 1220 1860 0418 1400 0204 1090 0110 0704 0037 0488 0015

650 4590 5560 3080 1420 2010 0486 1510 0239 1180 0127 0762 0043 0529 0017

700 4950 4550 3320 1650 2170 0560 1630 0275 1270 0146 0821 0050 0569 0020

750 5300 5200 3560 1880 2320 0637 1750 0314 1360 0164 0879 0057 0610 0023

800 3790 2130 2480 0721 1860 0354 1450 0185 0936 0064 0651 0025 8rdquo

850 4030 2390 2630 0805 1980 0395 1540 0209 1000 0072 0692 0028 0403 0007

900 2790 0901 2090 0438 1630 0232 1050 0008 0732 0032 0427 0008

950 2940 1000 2210 0486 1720 0258 1120 0087 0773 0036 0451 0010

1000 3100 1110 2320 0534 1810 0284 1170 0096 0814 0039 0474 0011

1100 3410 1290 2560 0643 1990 0341 1290 0116 0895 0047 0522 0012

1200 3720 1 580 2800 0763 2170 0403 1410 0135 0974 0055 0569 0015

1300 3030 0890 2360 0473 1530 0157 1060 0063 0616 0017

1400 3260 1020 2540 0544 1640 0183 1140 0072 0664 0019

1500 3490 1170 2720 0617 176 0208 1220 0083 0712 0022

1600 3720 1330 2890 0697 1880 0234 1300 0093 0758 0025

1700 10rdquo 3950 1490 3080 0784 1990 0260 1380 0104 0806 0028

1800 0546 0010 3260 0875 2110 0290 1470 0116 0854 0032

1900 0575 0012 3440 0965 2230 0323 1550 0129 0901 0034

2000 0606 0012 3617 1060 2340 0356 1630 0143 0946 0037

2200 0667 0015 3980 1280 2580 0429 1790 0172 1050 0045

2400 0727 0017 12rdquo 2820 0507 1950 0200 1140 0053

2600 0788 0021 0563 0009 3050 0589 2110 0234 1230 0061

2800 0848 0023 0606 0010 14rdquo 3280 0676 2280 0268 1330 0070

3000 0909 0026 0649 0011 0532 0007 3520 0773 2440 0306 1420 0080

3500 1060 0035 0760 0015 0620 0009 4110 105 2850 0416 1660 0108

4000 1210 0045 0866 0020 0709 0012 16rdquo 4690 135 3250 0532 1900 0139

4500 1360 0056 0976 0025 0798 0015 0606 0007 3660 0674 2130 0173

5000 1520 0069 1080 0029 0886 0018 0674 0009 4070 0822 2370 0212

6000 1810 0097 1290 0042 1070 0026 0808 0013 18rdquo 4880 1160 2850 0301

7000 2120 0130 1510 0055 1240 0035 0940 0017 0741 0010 5690 1580 3310 0403

8000 2420 0168 1730 0072 1420 0045 1080 0022 0847 0012 6510 2050 3790 0525

9000 2730 0210 1950 0091 1600 0056 1210 0027 0954 0015 4270 0659

10000 3030 0257 2170 0111 1770 0067 1350 0033 1050 0019 4740 0801

Legend Q Water Flow Rate (Lpm) V Velocity (ms) Y Specific Pressure Drops (bar100m)Water at ambient temperature in straight pipe

SPECIfIC PRESSURE DROPS fOR WATER fLOW IN CLEAN STEEL PIPE SCH 10S

Q V Y V Y V Y V Y V Y V Y V Y V Y [lm] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m]

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SPECIfIC PRESSURE DROPS fOR WATER fLOW IN CLEAN STEEL PIPE SCH 40S

Legend Q Water Flow Rate (Lpm) V Velocity (ms) Y Specific Pressure Drops (bar100m)Water at ambient temperature in straight pipe

18rdquo 14rdquo

1 0458 0726 0251 0170 38rdquo 12rdquo

2 0918 2590 0501 0600 0272 0136 0170 0044 34rdquo

3 1380 5590 0752 1220 0407 029 0255 0091 0144 0023 1rdquo

4 1840 9570 1000 2090 0543 048 0340 0151 0192 0038 0120 0012

5 2290 14450 1250 3180 0679 070 0425 0223 0241 0057 0150 0017

6 1500 4460 0815 0980 0510 0309 0289 0077 0180 0024 114rdquo

8 2010 7360 1090 1690 0680 0524 0385 0129 0240 0041 0138 0011 112rdquo

10 1360 2520 0850 0798 0481 0193 0300 0061 0172 0015 0127 0008

15 2040 5370 1280 1690 0722 0403 0450 0124 0258 0032 019 0015

20 2rdquo 2720 9240 1700 2840 0962 0683 0600 0210 0344 0054 0254 0026

30 0231 0016 212rdquo 2550 6170 1440 1450 0900 0442 0517 0114 038 0053

40 0308 0027 0216 0010 3400 10720 1920 2500 1200 0758 0689 0193 0507 0091

50 0385 0039 0270 0017 2410 3830 1500 1140 0861 029 0634 0135

60 0462 0055 0324 0023 2890 5410 1800 1610 103 0400 0761 0187

70 0539 0098 0378 0031 3rdquo 3370 7270 2100 2150 1210 0541 0888 0248

80 0616 0092 0432 0039 028 0014 312rdquo 2400 2760 1380 0690 1010 0315

90 0693 0115 0486 0048 0315 0017 0235 0008 2700 3470 1550 0862 1140 0397

100 0770 0141 0540 0059 035 002 0261 0010 4rdquo 3000 4250 1720 1050 1270 0488

150 1150 0295 0810 0125 0524 0042 0392 0021 0304 0011 4500 9300 2580 2260 1900 1030

200 1540 0512 1080 0212 0699 0072 0523 0036 0405 0019 3440 3910 2540 1810

250 1920 0773 1350 0322 0874 0108 0653 0053 0507 0028 5rdquo 3170 2740

300 2310 1100 1620 0449 105 0152 0784 0074 0608 004 0387 0014 3800 3820

350 2690 1470 1890 0606 122 0203 0915 0099 0710 0053 0452 0018 6rdquo 4440 5180

400 3080 1920 2160 0780 14 0264 1050 0128 0811 0068 0516 0023 0375 0009 5070 6690

450 3460 2390 2430 0979 157 0328 1180 0161 0912 0084 0581 0028 0402 0012 5710 8450

500 3850 2950 2700 1200 175 0403 1310 0196 1010 0101 0646 0034 0447 0014

550 4230 3550 2970 1440 192 0479 1440 0232 1110 0122 0710 0041 0491 0016

600 4620 4200 3240 1690 2100 0566 1570 0273 1220 0146 0775 0047 0536 0019

650 5000 6880 3510 1970 2270 0658 1700 0319 1320 0169 0839 0055 0581 0022

700 5390 5630 3780 2280 2450 0759 1830 0368 1420 0194 0904 0063 0625 0025

750 577 6440 4050 2600 2620 0863 1960 042 1520 0218 0968 0072 067 0029

800 4320 2950 2800 0977 2090 0473 1620 0246 1030 0081 0715 0032 8rdquo

850 4590 3310 2970 1090 2220 0528 1720 0277 1100 0091 076 0036 0439 0009

900 3150 1220 2350 0585 1820 0308 1160 0100 0804 0041 0465 001

950 3320 1350 248 0649 1930 0342 1230 0111 0849 0045 0491 0012

1000 3500 1500 261 0714 2030 0377 1290 0122 0894 0049 0516 0013

1100 3850 1750 2870 0860 2230 0452 1420 0147 0983 0059 0568 0015

1200 4200 2140 3140 1020 2430 0534 1550 0172 1070 0069 0620 0018

1300 3400 1190 2640 0627 1680 0200 1160 008 0671 0021

1400 3660 1370 2840 0722 1810 0232 1250 0091 0723 0024

1500 3920 1560 3040 0818 1940 0264 1340 0105 0775 0027

1600 4180 1780 3240 0924 2070 0297 1430 0118 0826 0031

1700 10rdquo 4440 1990 3450 1040 2190 0331 1520 0132 0878 0035

1800 0590 0012 3650 1160 2320 0369 1610 0147 0930 0039

1900 0622 0014 3850 1280 2450 041 1700 0163 0981 0042

2000 0655 0015 40500 1410 2580 0452 1790 0181 1030 0046

2200 0721 0018 4460 1700 2840 0545 1970 0217 1140 0056

2400 0786 0021 12rdquo 3100 0645 2140 0253 1240 0065

2600 0852 0025 0600 001 3360 0749 2320 0296 1340 0076

2800 0917 0028 0646 0012 14rdquo 3610 0859 2500 0339 1450 0087

3000 0983 0032 0692 0013 0573 0008 3870 0982 268 0387 1550 0099

3500 1150 0043 0810 0018 0668 0011 4520 1330 3130 0526 1810 0134

4000 1310 0055 0923 0023 0764 0014 16rdquo 5160 1720 3570 0673 2070 0172

4500 1470 0068 1040 0029 0860 0018 0658 0009 4020 0853 2320 0214

5000 1640 0084 1150 0034 0955 0022 0731 0011 4470 1040 2580 0262

6000 1960 0118 1380 0049 1150 0031 0877 0016 18rdquo 5360 1470 3100 0373

7000 2290 0158 1610 0065 1340 0042 1020 0021 0808 0012 6250 2000 3610 0499

8000 2620 0204 1840 0085 1530 0054 1170 0027 0924 0015 7150 2590 4130 065

9000 2950 0256 2080 0107 1720 0067 1310 0033 1040 0019 4650 0816

10000 3280 0313 2310 0130 1910 0081 1460 0041 1150 0023 5160 0992

Q V Y V P V Y V Y V Y V Y V Y V Y [lm] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m]

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78 wwwpnr-nozzlescom CTG SH 07 EU

10 75 12 038 4 11 50

15 80 12 044 4 11 55

20 90 14 065 4 11 65

25 100 14 082 4 11 75

32 120 14 117 4 14 90

40 130 14 139 4 14 100

50 140 14 162 4 14 110

65 160 14 214 4 14 130

80 190 16 343 4 18 150

100 210 16 422 4 18 170

125 240 18 611 8 18 200

150 265 18 751 8 18 225

175 295 20 1020 8 18 255

200 320 20 1230 8 18 280

250 375 22 1850 12 18 335

300 440 22 2550 12 22 395

350 490 22 3180 12 22 445

400 540 22 3850 16 22 495

450 595 22 4700 16 22 550

500 645 24 6040 20 22 600

PN 6 (UNI 6091)

ND 6 (DIN 2527) DN Flange Holes

D t W N Oslash a

90 14 063 4 14 60

95 14 071 4 14 65

105 16 101 4 14 75

115 16 122 4 14 85

140 16 180 4 18 100

150 16 209 4 18 110

165 18 287 4 18 125

185 18 365 4 18 145

200 20 461 8 18 160

220 20 565 8 18 180

250 22 812 8 18 210

285 22 1050 8 22 240

315 24 1410 8 22 270

340 24 1620 12 22 295

405 28 2510 12 25 355

460 28 3520 12 25 410

520 30 4820 16 25 470

580 32 6350 16 30 525

640 32 7720 20 30 585

715 34 1020 20 33 650

PN 16 (UNI 6093)

ND 16 (DIN 2527) Dimensions Holes

D t W N Oslash a

ND 10 (DIN 2527) Dimensions Holes

D t W N Oslash a

90 14 063 4 14 60

95 14 071 4 14 65

105 16 101 4 14 75

115 16 122 4 14 85

140 16 180 4 18 100

150 16 209 4 18 110

165 18 287 4 18 125

185 18 365 4 18 145

200 20 461 4 18 160

220 20 565 8 18 180

250 22 812 8 18 210

285 22 1050 8 22 240

315 24 1410 8 22 270

340 24 1650 8 22 295

395 26 2410 12 22 350

445 26 3080 12 22 400

505 26 3960 16 22 460

565 26 4960 16 25 515

615 26 5860 20 25 565

670 28 7530 20 25 620

PN 10 (UNI 6092)

LegendaDN Nominal DiameterD Flange External Diametert Flange ThicknessW Flange WeightN Hole NumberOslash Hole Diametera Hole axis

PIPING Flange dimensionsPI

PIN

G

Blind flanges to DIN 2527

79wwwpnr-nozzlescomCTG SH 07 EU

LegendDN Nominal DiameterD Flange External Diametert Flange ThicknessW Flange WeightN Hole NumberOslash Hole Diametera Hole axis

12rsquorsquo 889 111 08 4 159 603

34rsquorsquo 984 127 09 6 159 698

1rsquorsquo 1079 143 10 4 159 794

114rsquorsquo 1175 159 13 4 159 889

112rsquorsquo 1270 175 14 4 159 984

2rsquorsquo 1524 190 18 4 190 1206

212rsquorsquo 1778 222 32 4 190 1397

3rsquorsquo 1905 238 41 4 190 1524

312rsquorsquo 2159 238 59 8 190 1778

4rsquorsquo 2286 238 77 8 190 1905

5rsquorsquo 2540 238 91 8 222 2159

6rsquorsquo 2794 254 118 8 222 2413

8rsquorsquo 3429 286 204 8 222 2984

10rsquorsquo 4064 302 318 12 254 3619

12rsquorsquo 4826 317 500 12 254 4318

14rsquorsquo 5334 349 600 12 286 4762

16rsquorsquo 5969 365 770 16 286 5397

18rsquorsquo 6350 397 950 16 317 5778

20rsquorsquo 6985 429 1230 20 317 6350

22rsquorsquo 7493 460 1510 20 349 6921

ANSI 150 lb DN Flange Holes

D t W N Oslash a

952 143 10 4 159 667

1175 159 14 4 190 825

1238 175 18 4 190 889

1333 206 27 4 190 984

1556 222 36 4 222 1143

1651 254 45 8 190 1270

190S 286 68 8 222 1492

209S 317 91 8 222 1683

2286 349 132 8 254 1841

2540 349 150 8 254 2000

2794 381 200 8 254 2349

3175 413 277 12 254 2699

3810 476 450 12 286 3302

4445 540 700 16 317 3873

5207 571 103 16 349 4508

5842 603 141 20 349 5143

6477 635 181 20 381 5715

7112 667 228 24 381 6286

7747 698 282 24 413 6858

8382 730 311 24 444 7429

ANSI 400 lb Dimensions Holes

D t W N Oslash a

ANSI 300 lb Dimensions Holes

D t W N Oslash a

952 143 10 4 159 667

1175 159 14 4 190 825

1238 175 18 4 190 889

1333 190 27 4 190 984

1556 206 32 4 220 1143

1651 222 36 8 190 1270

1905 254 54 8 222 1492

2095 286 73 8 222 1683

2286 302 95 8 222 1841

2540 317 122 8 222 2000

2794 349 159 8 222 2349

3175 365 227 12 222 2699

3810 413 370 12 254 3302

4445 476 580 16 286 3873

5207 508 840 16 317 4508

5842 540 1070 20 317 5143

6477 571 1390 20 349 5715

7112 603 3900 24 349 6286

7747 635 2230 24 349 6858

8382 667 2700 24 413 7429

PIPING Flange dimensions

PIPI

NG

flanges to ANSI norms

80 wwwpnr-nozzlescom CTG SH 07 EU

PIPI

NG

Sieves are used both for determining the particle size distribution of a granular material and to filter solid particles in a liquid Normally the sieve is made with a fabric whose characteristic dimensions areL is the Opening Width (free passage)D is the Diameter of the wireP is the Pitch of the wireS is the Thickness of the fabricTo classify particle sizes there is some Sieve Series according to specific standardsthe most known are Tyler Sieve Series US Sieve Series UK Sieve SerieshellipThe Tyler mesh size indicates exactly the number of openings per linear inch of mesh

L[microm]

TYLER Sieve[Mesh No]

ASTM E11 Sieve[Mesh No]

BS 410 Sieve[Mesh No]

DIN 4188 Sieve[mm]

5 2500 2500 0005

10 1250 1250 0010

15 800 800 0015

20 625 635 625 0020

22 0022

25 500 500 500 0025

28 0028

32 na 450 440 0032

36 0036

38 400 400 400

40 0040

45 325 325 350 0045

50 0050

53 270 270 300

56 0056

63 250 230 240 0063

71 0071

75 200 200 200

80 0080

90 170 170 170 0090

100 0100

106 150 140 150

112 0112

125 115 120 120 0125

140 0140

150 100 100 100

160 0160

180 80 80 85 0180

200 0200

In the german standard (DIN norm 4188) the Opening Width (L) is given in millimeters

PIPING Sieve size conversion chartPI

PIN

G

81wwwpnr-nozzlescomCTG SH 07 EU

L[microm]

TYLER Sieve[Mesh No]

ASTM E11 Sieve[Mesh No]

BS 410 Sieve[Mesh No]

DIN 4188 Sieve[mm]

212 65 70 72

250 60 60 60 0250

280 0280

300 48 50 52

315 0315

355 42 45 44 0355

400 0400

425 35 40 36

450 0450

500 32 35 30 0500

560 0560

600 28 30 25

630 0630

710 24 25 22 0710

800 0800

850 20 20 18

900 0900

1000 16 18 16 1000

1120 1120

1180 14 16 14

1250 1250

1400 12 14 12 1400

1600 1600

1700 10 12 10

1800 1800

2000 9 10 8 2000

2240 2240

2360 8 8 7

2500 2500

2800 7 7 6 2800

3150 3150

3350 6 6 5

3550 3550

4000 5 5 4 4000

4500 4500

4750 4 4 35

5000 5000

5600 35 35 3

6700 3 0265 in 1

8000 25 516 in na

Applicable standards areISO 565 (1987) ISO 3310 (1999) ASTM E 11-70 (1995)DIN 4188 (1977) BS 410 (1986) AFNOR NFX11-501 (1987)

Legend Q Water Flow Rate V Velocity P Pressure drop Pressure drop in bar per 100 meters of straight pipe (water at ambient temperature)

PIPING Sieve size conversion chart

PIPI

NG

Besides its main range of nozzles for industrial applications PNR manufactures a wide range of complementary products and systems to optimize the use of spray jets and fluids control in most of the modern industrial processes

PNR PRODUCT RANGE

CTG AC

CTG LS

CTG UG

CTG AZ

Complementary Products andAssembly FittingsA complete line of nipples clamps swivel joints and everything that helps you to assemble align and service your spraying systems quickly and easilyAir blowers mixing eductors filters clean-ing guns and lances hose reels steam heaters pressure tanks quick couplings to help you build up a professional system upgraded to the latest standards

Tank washing systemsA complete range from simple fixed washing heads to the two-axis heads from mushroom nozzles to fluid driven reaction heads up to the motor driven washing heads equipped with a pneu-matic or electric motorAll for the inside cleaning of industrial tanks according to the latest technology accessories included

Spray nozzles for industrial applicationsOne of the world most complete lines of nozzles for numberless industrial appli-cations Nozzles with a wide openings range various types of vanes several spray patterns anti-clog design available in small and big dimensions and made in many food-grade materials like PFTE and Stainless Steel 316L with threaded and flanged connections

Air assisted atomizersUltrasonic classic and automatic atomiz-ers for the finest atomization in any insus-trial process High quality machining and strict quality control ensure your systems top professional resultsProgramming and control panels for an easy assembly of complete humidification systems

CTG SP

CTG PM

CTG SW

CTG LN

Spraydry nozzlesAir assisted or hydraulic high pressure ato-mizers made in high-quality metal alloys or tungsten carbideA complete line of nozzles for the moder-nization of existing facilities at competitive prices To ensure highly accurate results and a long service life these nozzles are manufactured with the finest materials and technologically advanced machines

Paper mill productsA line of products specifically designed for perfect results on paper mill machines including disc nozzles patented for self-cleaning filters flat jet nozzles with orifices in sapphire ruby and ceramic oscillating tubes equipped with a computer driven motor

Steelwork nozzlesA complete line of nozzles for steelwork applications including continuous casting air atomizers and conventional nozzles descaling nozzles for high pressure sys-tems dovetail tips for cylinders cooling and high capacity flanged nozzles for coke quenching

Gas cooling lancesSpillback or air assited lances for gas coo-ling in steelworks cement plants and other industrial applicationsWe can supply spare parts upgrade your plant and even supply a complete PLC driven system to enhance the towers per-formances to the highest efficiency level allowed by today technology

wwwpnr-nozzlescomCTG SH 07 EU

CTG SH 07 EUwwwpnr-nozzlescom

STAM

PATO

IN E

U 09

09

copy B

ellamp

Tany

Our products are distributed through

We are also represented in

PNR AmericaPNR Asia

PNR BalticPNR Benelux

PNR ChinaPNR Czech Republic

PNR DeutschlandPNR France

PNR ItaliaPNR Mexico

PNR UK

ArgentinaAustraliaAustriaBrazil

BulgariaCanada

ChileCroatia

DenmarkFinlandGreece

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Page 21: SPRAY CTG SH 07 EU ENGINEERING HANDBOOK

21wwwpnr-nozzlescomCTG SH 07 EU

The spray angle is the opening angle which the nozzle jet of droplets forms at the moment when it leaves the nozzle orifice and it is one of the fundamental parameters for the choice of a given nozzleIn fact the amplitude of the spray angle determines in connection with the distance between the nozzle orifice and the target to be covered the spray coverage and the density of liquid sprayed with respect to the cover area See our Catalogue for description of the different nozzle spray patterns The table at the bottom of the page gives the theoretical spray width based on the nozzle spray angle and the distance from the nozzle orifice It is important to note that because of several factors like gravity forces and aerodynamic drag the spray angle value cannot be maintained but in in a limited distance normally up to 300 mm from the orifice For air assisted atomizers it is improper to use the term spray angle since no precise value can be measured Therefore the values given by Catalogues are to be intended as guidelines only

THEORETICAL SPRAY COVERAGE

at various distances from nozzle orifice

Spray 50 100 150 200 250 300 400 500 600 700 800 1000 Angle mm mm mm mm mm mm mm mm mm mm mm mm

15deg 13 26 40 53 66 79 105 132 158 184 211 263 25deg 22 44 67 89 111 133 177 222 266 310 355 443 30deg 27 54 80 107 134 161 214 268 322 375 429 536 35deg 32 63 95 126 158 189 252 315 378 441 505 631 40deg 36 73 109 146 182 218 291 364 437 510 582 728 45deg 41 83 124 166 207 249 331 414 497 580 663 828 50deg 47 93 140 187 233 280 373 466 560 653 746 933 60deg 58 116 173 231 289 346 462 577 693 808 924 1150 65deg 64 127 191 255 319 382 510 637 765 892 1020 1270 70deg 70 140 210 280 350 420 560 700 840 980 1120 1400 75deg 77 154 230 307 384 460 614 767 921 1070 1230 1530 80deg 84 168 252 336 420 504 671 839 1010 1180 1340 1680 90deg 100 200 300 400 500 600 800 1000 1200 1400 1600 2000 95deg 109 218 327 437 546 655 873 1090 1310 1530 1750 2180 100deg 119 238 358 477 596 715 953 1190 1430 1670 1910 2380 110deg 143 286 429 571 714 857 1140 1430 1710 2000 2290 2856 120deg 173 346 520 693 866 1040 1390 1730 2080 2430 2771 3464 130deg 215 429 643 858 1070 1290 1720 2150 2570 3002 3431 4289

WhereASCbull = Actual Spray CoverageTSCbull = Theoretical Spray CoverageASAbull = Actual Spray AngleTSAbull = Theoretical Spray AngleL bull = Spray Distances

TSC = 2 middot L middot ctan ( TSA )2

7

LIQU

ID S

PRAY

AND

SPRA

Y NO

ZZLE

S

LIQUID SPRAY AND SPRAY NOZZLES Spray angle

22 wwwpnr-nozzlescom CTG SH 07 EU

LIQU

ID S

PRAY

AND

SPRA

Y NO

ZZLE

SLIQUID SPRAY AND SPRAY NOZZLES Spray angle

Depending upon the nozzle design variations of feed pressure may have a great influence on the spray angle valueGenerally with increasing pressure turbulence full cone nozzles will produce narrower angles flat jet nozzles will show a wider angle spray while nozzles working on the deflection principle like spiral nozzles and K style flat jet nozzles will be less affected by pressure changesAll nozzles will not function properly with very low pressure values (from 05 bar down depending upon nozzle type ) with a marked decay in performance larger drops not well defined spray pattern lower spray angle values

The above pictures show spray angles for different nozzles and different pressure valuesShould your application strictly require that a given value of the spray angle is obtained under a given pressure value or pressure range of values please obtain a test report from our laboratories

Full cone nozze DDW 2235

Flat jet nozzleJCW 2245

Spiral nozzeECW 2230

Pressure 05 bar Pressure 05 bar Pressure 05 bar

Pressure 3 bar Pressure 3 bar Pressure 3 bar

Pressure 10 bar Pressure 10 bar Pressure 10 bar

Photo obtained with 120000s flashlight

picture 1

picture 4

picture 7

picture 2

picture 5

picture 8

picture 3

picture 6

picture 9

NotePicture 2 shows clearly the droplet generation mechanism as described at page 15

23wwwpnr-nozzlescomCTG SH 07 EU

Terms and definitions

A very important characteristic of a spray nozzle is a parameter called Spray Distribution which gives a precise information about how evenly the drops of the spray are distributed onto the area covered by the sprayIt is self understood that normally it is preferable to obtain the most even distribution possibleIn the past this was done through the visual examination of a diagram reporting the quantity of water contained for example in glass pipes aligned onto the spray coverage areaPnr has determined to obtain such a result in a scientific way through high technology instrumentation as shown in the pictures below showing one of our patternators and a typical distribution diagram

Now to the spray geometry and some definition letrsquos consider a nozzle with a capa-city Q at the pressure PAt every value for distance H which we call height of spray we can define a plane lsquonrsquo normal to the nozzle axis on which a line can define the intersection of the spray onto the planeThe area covered by the spray on the plane lsquonrsquo has a surface S depending from the following parametersa) Spray pattern Fb) Opening angle of the spray αc) Height of the spray H

We can then write S=S( F α H )

In case of a full cone nozzle S is a circle with diameter C and S = 0785 C2

The capacity of the nozzle flows through the surface S but each smaller area inside the surface S will probably have a different value for the flow passing through itWe introduce then the value of Specific Capacity q

1) Specific Capacity

The function q depends upon the single point (xy) in the section S and then

Determining the function q is however very expensive therefore in practice two different functions are used which give in most occurrences sufficient information

2) Linear Distribution

3) Angular distribution

part Qpart x

qx =

Diagram 1

q = limΔS 0

ΔQΔS

q = = f (x y H)part Qpart S

part Qpart φ

qφ =

ΔQ is the liquid flowing through a surface ΔSwhere ΔS is a fraction of the surface S

x and y are the local coordinates in the section planewhere H is the distance of the test surface from the nozzle orifice

partQ is the variation in capacitywhere partx is the variation of a generic linear coordinate

partQ is the variation in capacitywhere partφ is the variation of a generic angular coordinate

LIQU

ID S

PRAY

AND

SPRA

Y NO

ZZLE

S

LIQUID SPRAY AND SPRAY NOZZLES Spray Distribution

24 wwwpnr-nozzlescom CTG SH 07 EU

LIQUID SPRAY AND SPRAY NOZZLES Spray Distribution

Values extracted from these functions can characterize the spray and allow for drawing the diagrams defined as Distribution Curves

Analyzing the above curves it is possible to determine the type of water distribution along the spray coverage and the type of spray pattern like for example a full cone hollow cone flat or straight jet spray

Distribution measurement

The water distribution along the spray coverage is determined by means of an instrument called Patternator

A patternator consists of the following parts 1) Liquid collector2) Cell block3) Measure block4) Unloading block

The nozzle is above the instrument and it is orienta-ted in such a way the jet is collected into the upper liquid collectorThe liquid collector can be linear ( diagram 5 ) or round ( diagram 6 ) according to the test being runFrom the single parts in the collector the liquid is sent into the corresponding cells below (2)

The Measure block (3) determines the liquid content in each single cell then the unloading block (4) empties the instrument sending the liquid to the collection drain

There are two types of patternators

Analogic1 the different levels of liquid is visible through the transparent walls of the cells or pipes sometimes containing some kind of floating balls and a picture can be taken with a cameraDigital2 Delivering an automatic reading of the values in the cells the values being supplied as an electronic file from which a distribution curve can be easily obtained

Diagram 2 Linear distribution Diagram 3 Angular distribution

Diagram 4

Diagram 6 Circular collectorDiagram 5 Linear collector

LIQU

ID S

PRAY

AND

SPRA

Y NO

ZZLE

S

25wwwpnr-nozzlescomCTG SH 07 EU

LIQUID SPRAY AND SPRAY NOZZLES Spray Distribution

Normalizing distribution curve

The values obtained from the cells of the patternator showing the water quantity collected in the single cells allow for preparing a Distribution curve which can be given as a single line curve or as a row of vertical barsThese resemble the liquid level collected into the glass pipes of the old type instrumentation

The curves prepared based on the liquid level in the single cells still are not precise they depend in fact from the testing time the longer this time the larger the liquid quantity sprayedTo eliminate the influence of time from the test it is necessary to transform the effective curves to normalized curves

Normalized4) linear distribution

Normalized5) angular distribution

Please note that Maximum value is the one belonging to the series of values measured in the cellsIn addition to the distribution it is possible to normalize the intervals to with the following formulas

Normalized 6) linear interval

Normalized 7) angular interval

The linear normalized amplitude is defined inside an interval [-1 +1]The angular normalized amplitude is defined inside an interval [0+2π]

Diagram 7 Effective linear distribution curve Diagram 8 Effective angular distribution curve

Mx

xx q

q=δ

N

πθ

2=Δ

Diagram 9 Normalized linear distribution curve Diagram 10 Normalized angular distribution curve

qx is the linear distribution of a generic cellwhere qx

M is the maximum linear distribution measured

qφ is the linear distribution of a generic cellwhere qφ

M is the maximum linear distribution measured

2 is the normalized linear amplitude of the spraywhere N is the number of active cells (active cells = cells containing liquid)

2π is the normalized angular amplitude of the spraywhere N is the number of active cells (active cells = cells containing liquid)

Mq

q

ϕ

ϕϕδ =φ

φ

φ

2

N=Δλ

2

N=Δλ

LIQU

ID S

PRAY

AND

SPRA

Y NO

ZZLE

S

26 wwwpnr-nozzlescom CTG SH 07 EU

Evaluation of spray distribution

To evaluate distribution curves it is necessary to take three properties into consideration

a) UNIFORMITY b) MONOTONY c) SIMMETRY

As described in the following diagrams and definitions

a) UNIFORM A distribution that minimizes the ratio AAdeg

b) MONOTONE Is a distribution with a curve which grows on the left side and decreases on the left side c) SYMMETRIC Is a distribution which minimizes the Ratio A+A-

Based on the above definitions the following curves show the ideal situations

The three properties are then evaluated by means of the following parameters

1 Integral uniformity

2 Incremental uniformity

3 Symmetry index

Complete details about the above formulas and definition can be found in our Technical Bulletin REL 080002 which shall be released from our Technical Department on request

Diagram 12Normalized and monotone distribution

Diagram 11Normalized and monotone distribution

Diagram 14Ideal monotony

Diagram 15Ideal symmetry

Diagram 13Ideal uniformity

1001 sdot=MA

AU

1002

2 sdot=lowastσ

U

1001

sdot⎥⎦

⎤⎢⎣

sdotminus=

lowast

lowast

δ

ε

NI S

sum minus=lowast

M

i iδδε

A is the area included in the normalized curvewhere Adeg is the rest of the area included in the 2x1 rectangle

Left side is the area -1 0where Right side is the area 0 +1

A+ is the area included below the curve on the right sidewhere A- is the area included below the curve on the left side

where

where δrsquo is the value of normalized liquid content in the symmetric cell N number of cells containing liquid in half of the diagram

lowast

lowast sum=

N

N

i i

δ

δ N Number of cells containing liquid

A area included below the curve AM area included below the ideal curvewhere

sum minus= +lowast

1

N

i ii δδσ

N Number of cells containing liquid

LIQU

ID S

PRAY

AND

SPRA

Y NO

ZZLE

SLIQUID SPRAY AND SPRAY NOZZLES Spray Distribution

27wwwpnr-nozzlescomCTG SH 07 EU

Liquids are characterized for their property of undergoing continuous deformation when subjected to shear stress The property of fluids (liquids or gases) to resist flowing due to the existence of internal friction within the fluid is called visco-sity

Thus if we imagine the different layers of fluid sliding one over the other with friction we can imagine that viscosity is defined the force required to move a unit area of fluid for a unit distance Viscosity is measured with many different systems among which the most used are the following

The following table shows correspondences between the most used viscosity units

The viscosity value of a liquid depends upon the temperature therefore the viscosity value must always be given with reference to a temperature value The viscosity of water (20deg C) is 1 Centipoise and 1 Centistoke since water mass density = 1

KINEMATIC SAYBOLT SAYBOLT ENGLER VISCOSITY UNIVERSAL FUROL

Centistoke Sq feetsec SSU SSF Degrees

100 000001076 310 --- 100

500 000005382 424 --- 137

1000 00001076 588 --- 183

1566 00001686 80 --- 245

2052 00002209 100 --- 302

2515 00002707 120 --- 357

4295 00004623 200 --- 592

1080 0001163 500 523 1460

1510 0001625 700 720 2044

1942 0002090 900 921 2628

3023 0003254 1400 143 4090

3885 0004182 1800 183 5260

5394 0005806 2500 254 7300

10788 001161 5000 509 146

15103 001626 7000 712 204

19419 002092 9000 916 263

32365 003483 15000 1526 438

METHOD UNIT DIMENSIONS NOTES

1 Dynamic viscosity(Absolute viscosity) Poise ML T-1 Poise = 100 Centipoises = (1 dyne per seccm2)

2 Kinematic viscosity Stoke L2 T-1 1 Stoke = 100 Centistoke = (cm2sec)Kinematic viscosity = Dynamic viscositydensity

3 SSUSSF

One of the most widely instruments to determine is the Saybolt viscosimeter which measures the time in seconds required for a fixed volume of a given liquid to flow through an orificeSSU = Seconds Saybolt Universal relates to a smaller orifice for less viscous liquidsSSF = Seconds Saybolt Furol relates to a larger orifice for more viscous liquids

LIQUID SPRAY AND SPRAY NOZZLES Influence of liquid viscosity

LIQU

ID S

PRAY

AND

SPRA

Y NO

ZZLE

S

28 wwwpnr-nozzlescom CTG SH 07 EU

Viscosity influence on nozzle flow rate

AlI nozzle Catalogue data refer to spraying water (water cinematic viscosity is equal to 1 Centistoke)A liquid with viscosity higher than water will require more energy to be pumped and sprayed and will flow with lower velocity at the same pressure and this will cause a reduction in the turbulence of the flow For the above reason nozzles working on the turbulence principle like normal full cone nozzles and whirl hollow cone nozzles will show an increase in capacity while spraying liquids with viscosity higher than water This increase is very consistent for small size nozzles where the small radius of the whirl chamber tends to cause high turbu-lence in the flow and tends to diminish and to disappear for nominal capacity valves (capacity values at 3 bar) larger than 15 liters per minute

The graph below shows for a liquid with a viscosity of about 4 Centistokes typical variations in the nozzle flow rate value for different values of the nozzle whirl chamber diameter As it may be seen these variations can be neglected in most practical applications where nozzles with whirl chamber diameters well over 3 mm are used

For other types of nozzles not working on the turbulence principle the increase on viscosity will simply reduce the liquid exit velocity at the orifice thus causing a decrease in capacity Experience shows that this decrease ranges between 3 and 6 of nominal water capacity that is to say that the variation introduced is in the same order of magnitude as the nozzle flow rate toler-ance

Viscosity influence on nozzle spray angle and spray pattern

With reference to the theory of jet break-up and droplet information it can be easily imagined that spraying a liquid more viscous than water is a difficult task

Al the properties of the spray tend to worsen therefore one can expectA higher value for the minimum operating pressure that is the pressure value which allows for obtaining a well defined 1 spray with the expected spray angle A worse spray distribution since the viscous behavior of the liquid makes it more difficult to pro-duce fine droplets and 2 to distribute them evenly with the desired spray pattern A narrower spray angle It is difficult to give guidelines since results on different nozzles at different pressures and with 3 different liquids are scarcely predictableHowever our experience shows that in many cases the use of impact nozzles can give acceptable results where all other type of nozzle failsA laboratory test or a field test are stili the safest way to obtain sound results

50

45

40

35

30

25

20

15

10

5

0 2 3 4 5 6 7 8 9

Increase Flow rate vs Whirl Chamber Diameter

Incr

ease

Flo

w R

ate

[mm

]

Whirl Chamber Diameter [mm]

LIQUID SPRAY AND SPRAY NOZZLES Influence of liquid viscosityLI

QUID

SPR

AYAN

D SP

RAY

NOZZ

LES

29wwwpnr-nozzlescomCTG SH 07 EU

With reference to the Bernoulli Rule as exposed in page 6 one can say that the pressure energy of the liquid flow at the nozzle inlet is transformed totally (minus some losses due to friction inside the nozzle) into liquid velocity at the nozzle orificeCatalogue figures give nozzle capacities when spraying waterIf the specific gravity or density of the liquid is different from that of water the available pressure energy will produce a different liquid velocity at the nozzle orificesIn other words a given quantity of energy will spray always the same quantity of liquid mass but different volumes (flow rates) according to the liquid specific gravity or density

Therefore a liquid heavier than water will exit the nozzle with a lower velocity at lower flow rate while to the contrary a liquid lighter than water will be sprayed at higher velocity at higher flow rate

The following formula is to be applied

The table below gives the value of a correction factor to obtain the flow rate of a liquid with different specific weight as water

WhereQL Liquid flow rateQW Water flow rateF Correction factor

kgliter Libregallon F

06 50 129

07 58 120

08 67 112

09 75 105

10 83 100

11 92 095

12 100 091

13 109 088

14 117 085

15 125 082

16 134 079

17 142 077

18 150 075

19 159 073

20 167 071

QL = F QW8

LIQUID SPRAY AND SPRAY NOZZLES Influence of liquid specific gravity

LIQU

ID S

PRAY

AND

SPRA

Y NO

ZZLE

S

30 wwwpnr-nozzlescom CTG SH 07 EU

The spraying water impact of a nozzle depends on several factors and more precisely spray distribution pattern and spray angle The first step to calculate the impact value which is usually expressed in Kilograms per square centimeter is to deter-mine Total Theoretical lmpact Value using the following formula

The obtained value has to be multiplied by the Total Theoretical Impact per Square Centimeter Coefficient (E)The final value is the Spraying Liquid Impact expressed in kgpcm2Of course not alI the energy of the fluid vein is transferred to the impact point

A part of this energy sometimes a considerable part goes to obtain a desired spraying angle by having the liquid vein acquire a high rotational speed inside the whirl chamber The highest value of impact is obtained with straight jet nozzle and the value can be calculated multiplying spraying pressure per 19The tables below containing the Total Theoretical Impact sqcm coefficient values for different spray pattern nozzles for a dis-tance of 300 mm

[kgpcm2]

TOTAL THEORETICAL IMPACT PER SQ CM COEFFICIENT AT DISTANCE OF 300 MM (E)

Spray Flat jet nozzle Spray Full cone nozzle Spray Hollow cone nozzle Angle Angle Angle

15deg 0300 15deg 0110 25deg 0180 35deg 0130 30deg 0025 40deg 0120 50deg 0100 50deg 0010 65deg 0070 65deg 0004 60deg80deg 001002 80deg 0050 80deg 0002 100deg 0001

WhereQ is the flow rate at working pressure in lpmP is the pressure value in kgpcm2

[kgpcm2]TTI = 0024 Q P

SLI = E TTI

9

10

LIQU

ID S

PRAY

AND

SPRA

Y NO

ZZLE

SLIQUID SPRAY AND SPRAY NOZZLES Jet impact

31wwwpnr-nozzlescomCTG SH 07 EU

Jet impact diagram

A further parameter to characterize the performance of a spray nozzle is the distribution of the jet impact force which could be derived by means of mathematical methods from the values of the spray distribution onto the surface covered by the spray but which can more easily be measured with the help of specifically designed instrumentation

In some applications the jet impact force Is the most important parameter used to realize the required processSteel sheet descaling in a rolling mill is a typical example where the jet impact is required to take away the surface scale and obtain a perfectly even surfaceFor that reason special nozzles have been developed to perform this very task where service life impact value and spray distribution reach the values required for satisfactory resultThese test are performed in a laboratory equipped with a specifically designed instrumentation where the high pressures involved in these process can be reached which can measure the pressure values along a matrix of points distributed in the spray area covered by the nozzle

These values are supplied both in a table of values and as a 3D pressure diagram similar to those shown below

On such applications where producing high impact values in the jet is necessary it is of paramount importance that the liquid flow turbulence is kept to a minimum and therefore it is widely used to insert into the nozzle entrance devices designed to improve the operating conditions by forcing the liquid flow through straight passages with several different shapes by doing so the impact delivered by the spray is increased with the same feed pressure

One typical shape used by Pnr is shown on the right and the two dia-grams below show the impact force diagrams for the same nozzle with and without a flow straightener the reduction of flow turbulence can lead in increase of impact force often higher than 20Further improvements of course are available when the nozzle inside profile is properly designed in order to avoid sharp cross section changes and all surfaces are finished as smoothly as possible

Typical design of a Pnr flow straightener

Impact pressure diagram with flow straightenerImpact pressure diagram without flow straightener

LIQU

ID S

PRAY

AND

SPRA

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S

LIQUID SPRAY AND SPRAY NOZZLES Jet impact

32 wwwpnr-nozzlescom CTG SH 07 EU

LIQUID SPRAY AND SPRAY NOZZLES Pressure drop through a nozzle

Pressure drop through a nozzle

Some of our customers have asked us In the past which Is the pressure drop through a nozzle since they consider a nozzle one of the parts in a piping like a valve or an elbow which causes a given pressure drop along the line

The reality is different and can be easily understood when considering the Bernoulli formula [2] as given at page 19 of this manual the formula says that the total energy of a liquid flow is made from the addition of three facors

Potential energy due to elevationbullPressure energybullVelocity energybull

When we apply the formula at the entrance and at the outlet ( the orifice ) of a nozzle and we neglect the influence of turbulence losses in between we can easily see that

The potential energy variation can be neglected because of the limited dimensions of the nozzle since the distance bullbetween the nozzle entrance and the nozzle orifice plays no role-The pressure energy variation is important since the liquid pressure value falls abruptly from the pressure inside the feed bullpipe to the ambient pressureThe velocity energy variation is also consistent since the liquid is ejected from the orifice at high speedbull

In other words the pressure energy of the liquid flowing through the orifice is suddenly transformed in liquid drops velocity which is exactly what a nozzle is designed to do

This is shown from equation [3] at page 19 which allows the exit velocity from the nozzle to be calculated from the pressure inside the pipe ( we actually consider the pressure difference between the inside of the pipe and the ambient pressure in this formula )

In other words all the energy still available at the nozzle is converted into velocity or if you so prefer you have a total pressure fall The system designer shall therefore evaluate all the pressure drop between the pump outlet flange and the nozzle entrance in order to be sure that the nozzle feed pressure is sufficient to assure the desired capacity for the liquid being sprayed

parameters valuesat nozzle outlet

nozzle inlet nozzle oulet or orice

feed pressure

inlet velocity

parameters valuesat the nozzle inlet

(A)potential elevation

energy

(A)velocity ( kinetic ) energy

(A)pressure energy

ambient pressure

exit velocity

LIQU

ID S

PRAY

AND

SPRA

Y NO

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33wwwpnr-nozzlescomCTG SH 07 EU

NOZ

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The choice of the right material for a nozzle is sometimes the most important one to do since the nozzle operating life depends upon it There are several factors to influence or shorten the nozzle operating life sometimes more than one at the same time the most important being

Wear from solid particles suspended into the liquid being sprayed1 Chemical corrosion from the liquid being sprayed 2 Chemical corrosion from the ambience outside the nozzle3 Exposure to high temperature 4 Exposure to mechanical shocks5

NOZZLE MATERIALSPnr material codes 34Properties of materials 35Mechanical properties of materials 39Chemical resistance of materials 40

NOZZLE MATERIALS

34 wwwpnr-nozzlescom CTG SH 07 EU

PNR has adopted a short code to identify construction materials for nozzles and nozzle partsHere below the most frequenty used materials

MATERIAL STANDARDS

The following standards are mentioned with reference to materials identification

NOZ

ZLE

MAT

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LS

A1 Free Cutting Steel E1 TEFLONreg (PTFE) L3 NICROFERreg 5923

A2 Carbon Steel E3 DELRINreg (POM) L4 STELLITEreg 6

A8 Zinc Plated Mild Steel E6 PERSPEXreg (PMMA) L5 HASTELLOYreg B2

A9 Nickel Plated Mild Steel E7 VITONreg (FPM) L6 HASTELLOYreg C4

B2 AISI 304 Stainless Steel E8 NBR- Sh 70 Rubber L61 HASTELLOYreg C22

B3 AISI 316 Stainless Steel E81 SANTOPRENEreg Rubber L62 ULTIMETreg

B31 AISI 316L Stainless Steel E82 KLINGERITEreg L7 NICKEL 201

B4 AISI 321 Stainless Steel E83 HYPALONreg L8 HASTELLOYreg C276

B8 AISI 309 Stainless Steel E91 Silicon L9 SANICROreg 28 SS

B81 AISI 310 Stainless Steel F12 Tungsten Carbide (TC) N1 AISI 302 Stainless Steel

C1 AISI 420 St Steel hardened F2 PIREXreg P6 ABS

C4 AISI 317 Stainless Steel F3 Rubin P7 FASIT OIL

C6 SAF 2205 Stainless Steel F4 Zapphire P8 EPDM ShA Rubber

D1 Polyvinylchloride (PVC) F5 Ceramic P9 STIROLUXreg 637

D2 Polypropylene (PP) F6 Silicon Carbide (SC) T1 Brass

D3 Polyamide (PA) G1 Cast Iron T3 Copper

D5 Powder Charged PP H1 Titanium T5 Bronze

D6 Fiberglass Charged PP L1 MONEL 400 T8 Nickel Plated Brass

D7 High Density Polyethylene L2 INCOLOYreg 825 V1 Aluminium

D8 Polyvinylidenefluoride (PVDF) L21 INCONELreg 600 V7 Aluminium ENP

STANDARD ORGANIZATION COUNTRY STANDARD CODE

AFNOR Association Franccedilaise de Normalisation France NF

AISI American Iron and Steel Institute USA AISI

ANSI American National Standards Institute USA ANSI

ASTM American Society for Testing and Materials USA ASTM

BSI British Standards Institution UK BS

DIN Deutsches Institut fuumlr Normung Germany DIN

DSIT Dansk StandardsInformation Technology Denmark DS

ISO International Organization for Standardization International ISO

JIS Japanese Institute for Standard Japan JIS

UNI Ente Nazionale di Unificazione Italy UNI

NOTEThe complete list of the Materials Codes may be requested to our Technical Service mentioning release code TGCE CODMAT

NOZZLE MATERIALS PNR material codes

35wwwpnr-nozzlescomCTG SH 07 EU

NOZ

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MAT

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LS

B1 AISI 303 STAINLESS STEEL

Chemical composition CR 1750 NI 850 S 025 Coding correspondence

Type Stainless Steel Austenitic AISI 303

Hardening Not possible BS 303 S 21

Annealing 1050 1100deg C in water DIN Wnr 14305

Welding Possible with precautions Euro X10CrNiS1809

Corrosion properties

Good resistance Atmospheric exposure food substances organic chemicalsLow resistance Chlorides reducing acids and over 800deg C

JIS SUS 303

NF Z6CN 18-09

SIS 2346

UNI XWCrNiS 1809

B3 AISI 316 STAINLESS STEEL

Chemical composition C 005 CR 170 NI 120 MO 225 Coding correspondence

Type Stainless Steel Austenitic AISI 316

Hardening Not possible BS 316 S 21

Annealing 1050 1100deg C in water DIN Wnr 14401

Welding Easy using same steel electrodes Euro X6CrNiMo17122

Corrosion properties

Good resistance Atmosphere great number of salts organic acids foodsLow resistance Solutions of reducing acids temperatures over 500deg C

JIS SUS 316

NF Z6CND 17-11

SIS 2347

UNI X5CrNiMo1712

B31 AISI 316L STAINLESS STEEL

Chemical composition C 003 CR 170 NI 130 MO 225 Coding correspondence

Type Stainless Steel Austenitic AISI 316 L

Hardening Not possible BS 316S12

Annealing 1050 1100deg C in water DIN Wnr 14404

Welding Easy using same steel electrodes Euro X3CrNiMo1810

Corrosion properties

Good resistance Atmosphere great number of salts organic acids foods salt waterLow resistance Solutions of reducing acids temperatures over 500deg C

JIS SUS 316L

NF Z2CND17-12

SIS 2348

UNI X2CrNiMo 1712

NOZZLE MATERIALS Properties of materials

36 wwwpnr-nozzlescom CTG SH 07 EU

C1 AISI 420 STAINLESS STEEL

Chemical composition C 020 CR 1300 Coding correspondence

Type Stainless Steel Martensitic AISI 420

Hardening 980deg - 1030deg C in oil BS 420 S 29

Annealing 750deg - 800deg C in air DIN Wnr 14021

Welding Possible with precautions Euro X20Cr13

Corrosion properties Good resistance Drinkable water steamgasoline oil alcohol ammonia

JIS SUS 420 J1

NF Z20C13

SIS 2303

UNI X20Cr13

C2 AISI 416 STAINLESS STEEL

Chemical composition C 012 CR 1250 S 022 Coding correspondence

Type Stainless Steel Martensitic AISI 416

Hardening 950deg - 1100deg C in oil BS 416 S 21

Annealing 750deg - 800deg C DIN Wnr ---

Welding Not possible Euro X120CrS13

Corrosion properties Good resistance Drinkable water steamgasoline oil alcohol ammonia

JIS SUS 416

NF Z12CF13

SIS ---

UNI X12CrS13

D8 POLYVINYLIDENE FLUORIDE (PVDF)

Description HIGH-MOLECULAR WEIGHT THE TOUGHEST OF THE FLUOROCARBON RESINS

Trade names amp SuppliersKYNAR (Atochem North America Inc formerly Penwalt Corporation)

SOLEF (Solvay Polymer Corporation)

Physical andMechanical Properties

Excellent resistance to abrasion and stress fatigue

Extremely pure opaque white resin

Thermal Properties UsefuI in temperatures ranging from -73 149degC (-100 300degF)Heat deflection temperature is (8090deg C at 182 Bars (176 194deg F at 264 psi)

Chemical Compatibility

Excellent chemical resistanceCan be used with wet or dry halogens most strong acids and bases aliphatics aromaticsalcohols and strong oxidizing agentsNot recommended for contact with ketones esters amines and some organic acids(fuming sulfuric acid)

NOZZLE MATERIALS Properties of materialsN

OZZL

E M

ATER

IALS

37wwwpnr-nozzlescomCTG SH 07 EU

E1 POLYTETRAFLUOROETHYLENE (PTFE)

Description FLUOROPLASTIC THAT HAVE SOME OR ALL OF THEIR HYDROGEN MOLECULESREPLACED BY FLUORINE

Trade names amp Suppliers

TEFLON TFE FEP and PFA (Dupont Polymer Products)

NEOFLON (Daikin)

FLUON (ICI Americas Inc)

SST-2SST-3 (Shamrock Technologies Inc)

Physical andMechanical Properties

Low coefficient

Low adhesiveness

Buona resistenza agli agenti atmosferici

Good weatherabilityLow resistance to creep and wear unless reinforced with glass figravebers which results in superior resistance

Thermal Properties High and low temperature stabilityHeat deflection temperatures range from 4855deg C at 182 bar (118-132deg F at 264 psi)

Chemical CompatibilityChemically inert

Totally insoluble

E3 ACETAL (ACETAL HOMOPOLYMERS AND COPOLYMERS)

Description HIGHLY CRYSTALLINE RESINS BASED ON FORMALDEHYDE POLYMERIZATION TECHNOLOGY

Trade names amp Suppliers

DELRIN (Dupont Polymer Products Corporation)

CELCON (Hoechst Celanese Corporation)

ULTRAFORM (BASF Corporation)

RTP 800 (RTP Corporation)

LUPITAL amp TENAL (Franklin Polymers Inc)

FULTRON 404 (ICI Americas Inc)

Physical andMechanical Properties

High tensile strength rigidity and esilience

High fatigue endurance

Excellent dimensional stability

Low coefficient of friction

Outstanding abrasion and wear resistance

Excellent creep resistance

Thermal Properties Heat deflection temperatures range from 110 -136deg C at 182 bars(230 - 270deg F at 264 psi) higher if glass figravelled

Chemical Compatibility

Remains stable in long-term high temperature water immersionExcellent resistance to chemicals and solvents but prolonged exposure to strong acids not recommendedNote Suitable for close-tolerance high-performance partsAvailable for machined parts or may be injection molded

NOZZLE MATERIALS Properties of materials

NOZ

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L6 HASTELLOY C4

PHYSICAL AND MECHANICAL PROPERTIES CHEMICAL COMPOSITION CORROSION RESISTANCE

R = 650800 Mpa C = 0015 max

Very good against pitting and tensile-corrosion specially in oxydizing atmosphereResistance in welded joints definitely better than C 276 lower than C22

Rp02 = 250470 Mpa Ni = 65

HRB = 90 Cr = 160

Mo = 155

W = --

Fe = 3 max

Ti = 05

Co = 2 max

APPLICATIONSRecommended for applications with strongly oxidizing atmosphere

L61 HASTELLOY C 22

PHYSICAL AND MECHANICAL PROPERTIES CHEMICAL COMPOSITION CORROSION RESISTANCE

R = 700800 Mpa C = 001 max

Excellent performances with oxydizing atmospheres as well as for pitting and tensile-corrosion conditionsVery good resistance in reducing atmospheres and for welded joints

Rp02 = 360420 Mpa Ni = 56

HRB = 93 Cr = 22

Mo = 13

W = 3

Fe = 3

Ti = --

Co = 25 max

APPLICATIONSChemical industry (gas ducts gas washing and treatment systems phosphoric acid production) Heat exchangers pumps chlorination reactors

L8 HASTELLOY C 276

PHYSICAL AND MECHANICAL PROPERTIES CHEMICAL COMPOSITION CORROSION RESISTANCE

R = 600800 Mpa C = 0015 max

Very good in reducing and oxydizing atmospheresVery good against pitting and tensile-corrosionAcceptable resistance in welded jointsIn cast parts excessive segregation not eliminated by thermal treatment of annealing makes it convenient to use C22 or C4 qualitieswhich assure better corrosion resistance and mechanical properties

Rp02 = 300370 Mpa Ni = 57

HRB = 90 Cr = 145165

Mo = 1517

W = frac345

Fe =

V = 035 max

Co = 25 max

APPLICATIONSChemical industry (air ducts scrubbers fans) Paper industry Thermoelectric plants Steel thermal treatments

NOZ

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39wwwpnr-nozzlescomCTG SH 07 EU

MATERIALTENSILE STRENGHT

CORROSION RESISTANCERp 02 R

20degC 800degC 20degC 800degC

(68degF) (1408degF) (68degC) (1408degC)

AISI 302 280 100 680 200

Good sensitive to corrosionbetween grains for slow heatingand cooling in the 450-900deg Crange temperature

AISI 303 280 100 680 200 Discrete

AISI 304304L 270 90 600 100Good especially for 304L304 sensitive to corrosionbetween grains like AISI 302

AISI 309 250 100 640 220 Good Sensitive to corrosion between grains like AISI 302

AISI 310 310 170 650 270Good (gt 304 - 304L)Sensitive to corrosionbetween grains like AISI 302

AISI 316316L 270 110 560 220 Very high especially for 316L

AISI 321 210 100 540 140 Good

AISI 347 280 120 620 200 Good

AISI 416 620 70 750 90

Good in medium corrosive ambient (atmosphere water gasoline alcohol N1-13 foods)Not in high corrosive

BRASS 110-150 --- 360-410 --- Good especially when nickel plated

BRONZE 100-300 --- 200-600 --- Discrete especially with sea water

CAST IRON le 500 V 100-800 V

NICKEL ALLOYS 100-1000 V 300-1300 VVery high also for high temperature To use in the temperaturerange 800-1200deg C

PLASTICS --- --- 20-200 ---

Good also for erosionGenerally they are attackedwith oxidizers like nitric acidhalogens ect

PTFE --- --- 30-40 ---

Very high except for elementarystate of alkaline metalsand to compounds containingfluorine at high temp

DUPLEX STEEL gtAISI 3 gtAISI 3 gtAISI 3 gtAISI 3 Very high also with high temperatureand also for pitting

TITANIUM alloy 195-850 V 300-900 VVery high in oxidizing ambientVery low in reducing ambient and with compounds containing fluorine

Legend Rp 02 = 02 YIELD STRENGHT [MPa]R = ULTIMATE TENSILE STRENGHT [MPa]V = To verify time by time

NOZZLE MATERIALS Mechanical properties of materials

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PIPI

NG

PIPINGPipes data 74Economic pipe sizes 75Pressure drop in clean steel pipes 76Flange dimensions 78Sieve size conversion chart 80

PIPING

74 wwwpnr-nozzlescom CTG SH 07 EU

The following table report the data of pipes according to ANSI B3619 that is one of the most used standards that regulate welded stainless steel pipes

DN NPS OD[mm]

SCHEDULE

5S 10S 40SSTD 80SXS

t m t m t m t m

[mm] [kgm] [mm] [kgm] [mm] [kgm] [mm] [kgm]

6 18 103 NA NA 124 028 173 037 241 048

8 14 137 NA NA 165 050 224 064 302 081

10 38 172 NA NA 165 064 231 086 320 112

15 12 213 165 081 211 101 277 128 373 164

20 34 267 165 103 211 130 287 171 391 223

25 1 334 165 131 277 212 338 254 455 328

32 1frac14 422 165 167 277 273 356 344 485 453

40 1frac12 483 165 192 277 315 368 411 508 549

50 2 603 165 242 277 399 391 551 554 759

65 2frac12 730 211 374 305 534 516 875 701 116

80 3 889 211 458 305 655 549 115 762 155

90 3frac12 1016 211 525 305 752 574 138 808 189

100 4 1143 211 592 305 849 602 163 856 226

125 5 1413 277 960 340 117 655 221 953 314

150 6 1683 277 115 340 140 711 287 1097 432

200 8 2191 277 150 376 202 818 431 1270 656

250 10 2730 340 229 419 282 927 611 1270 827

300 12 3239 396 317 457 365 953 749 1270 988

350 14 3556 396 348 478 419 NA NA NA NA

400 16 4064 419 421 478 480 NA NA NA NA

450 18 457 419 474 478 541 NA NA NA NA

500 20 508 478 602 554 696 NA NA NA NA

550 22 559 478 662 554 767 NA NA NA NA

600 24 610 554 837 635 959 NA NA NA NA

Where

DN = Nominal diameter NPD = Nominal Pipe Size OD = Outside Diameter t = Wall Thickness m = Specific WeightPIPI

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PIPING Pipes data

75wwwpnr-nozzlescomCTG SH 07 EU

The following Specific Pressure Drops (Y) are normally used in the good engineering practice(where Y=ΔPL ΔP Pressur Drop and L Pipe Lenght)

For pipe sizing the Velocity (V) is also usedIn the following table are shown the typical liquid velocities in steel pipes

Some fixed pressure drop values indicationsfor gate valves (fully open) consider a pressure drop of 5 metersbullfor normal bends consider a pressure drop of 5 metersbullfor a check valve consider a pressure drop of 15 metersbull

In the succeeding tables we show the velocity and specific pressure drop for several flow rates and pipe diameters

Not boiling waterY = 02divide05 bar100 m for pump discharge (07 bar100 m max if P gt 50 bar)

Y lt 0110 bar100 m for pump suction

Boiling water Y = 004divide005 bar100 m for pump suction (velocity = 03divide09 ms)

LIQUID LINE TYPE

Specific Pressure Dropsvs Velocity [ms]

0 lt V lt 2 3 lt V lt 10 10 lt V lt 20

NOT BOILING WATER

Pump suctionPump discharge (long)Discharge leads (short)Boiler feedDrainsSloped sewer

03 divide 0606 divide 0912 divide 2712 divide 2709 divide 12

-

06 divide 1209 divide 1515 divide 3715 divide 3709 divide 1509 divide 15

09 divide 1812 divide 2124 divide 4224 divide 42

-12 divide 21

HYDROCARBON LIQUIDS(normal viscosity)

Pump suctionDischarge heather (long)Discharge leads (short)Drains

05 divide 0808 divide 1112 divide 2709 divide 12

06 divide 1209 divide 1515 divide 3709 divide 15

09 divide 1812 divide 2124 divide 46

-

MEDIUM VISCOSITY OILPump suctionDischarge (short)Drains

--

03

05 divide 0901 divide 0209 divide 15

08 divide 1501 divide 0312 divide 18

OTHER WATERCooling tower Chilled waterSea water and generally foulingwater (long pipes) ()

06 divide 09 09 divide 15 12 divide 21

Note () In this case Cameron method has to be used with C=1 Y = 005 divide 012 bar100 m for principal manifold Y = 012 divide 023 bar100 m for secondary manifold

PIPI

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PIPING Economic pipe sizes

76 wwwpnr-nozzlescom CTG SH 07 EU

18rdquo 14rdquo

1 0350 0370 0200 0090 38rdquo 12rdquo

2 0705 1340 0395 0331 0223 0082 0145 0029 34rdquo

3 1060 2890 0593 0673 0333 0176 0217 0061 0125 0016 1rdquo

4 1410 4940 0788 1150 0444 0291 0290 0101 0167 0027 0110 0010

5 1760 7460 0985 1750 0556 0424 0362 0149 0209 0040 0137 0014

6 1180 2460 0667 0594 0434 0207 0251 0054 0165 0019 114rdquo

8 1580 4060 0892 1020 0579 0351 0335 0091 0219 0033 0126 0009 112rdquo

10 1110 1530 0724 0534 0418 0136 0274 0049 0158 0012 0116 0006

15 1670 3250 1090 1130 0627 0284 0411 0099 0236 0026 0174 0012

20 2rdquo 2230 5600 1450 1900 0836 0481 0549 0168 0315 0043 0233 0021

30 0212 0013 212rdquo 2170 4130 1250 1020 0823 0353 0473 0092 0348 0043

40 0283 0022 0190 0007 2900 7180 1670 1760 1100 0606 0631 0155 0465 0073

50 0354 0032 0237 0012 2090 2700 1370 0911 0789 0233 0581 0108

60 0424 0044 0284 0017 2510 3810 1650 1290 0943 0321 0697 0150

70 0495 0079 0332 0022 3rdquo 2930 5120 1920 1720 111 0434 0814 0199

80 0566 0074 0379 0028 0248 0010 312rdquo 2190 2210 126 0554 0925 0253

90 0636 0093 0427 0035 0279 0013 0209 0006 2470 2770 142 0692 1040 0319

100 0707 0114 0474 0043 0310 0015 0232 0007 4rdquo 2740 3400 158 0843 1160 0392

150 1060 0238 0711 0090 0464 0031 0349 0016 0272 0008 4110 7440 236 181 1740 0828

200 1410 0414 0948 0153 0619 0053 0466 0027 0362 0014 315 314 2330 1450

250 1760 0625 1190 0233 0774 0080 0581 0040 0453 0021 5rdquo 2900 2200

300 2120 0889 1420 0324 0930 0112 0698 0055 0543 0030 0352 0011 3480 3070

350 2470 1190 1660 0438 1080 0150 0815 0074 0634 0040 0411 0014 6rdquo 4070 4160

400 2830 1550 1900 0563 1240 0195 0935 0096 0724 0051 0469 0018 0341 0007 4650 5380

450 3180 1930 2130 0707 1390 0242 1050 0120 0815 0063 0528 0022 0366 0009 5230 6790

500 3540 2380 2370 0867 1550 0298 1170 0147 0902 0076 0587 0027 0407 0011

550 3880 2870 2610 1040 1700 0354 1280 0174 0991 0092 0645 0032 0447 0013

600 4240 3390 2840 1220 1860 0418 1400 0204 1090 0110 0704 0037 0488 0015

650 4590 5560 3080 1420 2010 0486 1510 0239 1180 0127 0762 0043 0529 0017

700 4950 4550 3320 1650 2170 0560 1630 0275 1270 0146 0821 0050 0569 0020

750 5300 5200 3560 1880 2320 0637 1750 0314 1360 0164 0879 0057 0610 0023

800 3790 2130 2480 0721 1860 0354 1450 0185 0936 0064 0651 0025 8rdquo

850 4030 2390 2630 0805 1980 0395 1540 0209 1000 0072 0692 0028 0403 0007

900 2790 0901 2090 0438 1630 0232 1050 0008 0732 0032 0427 0008

950 2940 1000 2210 0486 1720 0258 1120 0087 0773 0036 0451 0010

1000 3100 1110 2320 0534 1810 0284 1170 0096 0814 0039 0474 0011

1100 3410 1290 2560 0643 1990 0341 1290 0116 0895 0047 0522 0012

1200 3720 1 580 2800 0763 2170 0403 1410 0135 0974 0055 0569 0015

1300 3030 0890 2360 0473 1530 0157 1060 0063 0616 0017

1400 3260 1020 2540 0544 1640 0183 1140 0072 0664 0019

1500 3490 1170 2720 0617 176 0208 1220 0083 0712 0022

1600 3720 1330 2890 0697 1880 0234 1300 0093 0758 0025

1700 10rdquo 3950 1490 3080 0784 1990 0260 1380 0104 0806 0028

1800 0546 0010 3260 0875 2110 0290 1470 0116 0854 0032

1900 0575 0012 3440 0965 2230 0323 1550 0129 0901 0034

2000 0606 0012 3617 1060 2340 0356 1630 0143 0946 0037

2200 0667 0015 3980 1280 2580 0429 1790 0172 1050 0045

2400 0727 0017 12rdquo 2820 0507 1950 0200 1140 0053

2600 0788 0021 0563 0009 3050 0589 2110 0234 1230 0061

2800 0848 0023 0606 0010 14rdquo 3280 0676 2280 0268 1330 0070

3000 0909 0026 0649 0011 0532 0007 3520 0773 2440 0306 1420 0080

3500 1060 0035 0760 0015 0620 0009 4110 105 2850 0416 1660 0108

4000 1210 0045 0866 0020 0709 0012 16rdquo 4690 135 3250 0532 1900 0139

4500 1360 0056 0976 0025 0798 0015 0606 0007 3660 0674 2130 0173

5000 1520 0069 1080 0029 0886 0018 0674 0009 4070 0822 2370 0212

6000 1810 0097 1290 0042 1070 0026 0808 0013 18rdquo 4880 1160 2850 0301

7000 2120 0130 1510 0055 1240 0035 0940 0017 0741 0010 5690 1580 3310 0403

8000 2420 0168 1730 0072 1420 0045 1080 0022 0847 0012 6510 2050 3790 0525

9000 2730 0210 1950 0091 1600 0056 1210 0027 0954 0015 4270 0659

10000 3030 0257 2170 0111 1770 0067 1350 0033 1050 0019 4740 0801

Legend Q Water Flow Rate (Lpm) V Velocity (ms) Y Specific Pressure Drops (bar100m)Water at ambient temperature in straight pipe

SPECIfIC PRESSURE DROPS fOR WATER fLOW IN CLEAN STEEL PIPE SCH 10S

Q V Y V Y V Y V Y V Y V Y V Y V Y [lm] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m]

PIPI

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SPECIfIC PRESSURE DROPS fOR WATER fLOW IN CLEAN STEEL PIPE SCH 40S

Legend Q Water Flow Rate (Lpm) V Velocity (ms) Y Specific Pressure Drops (bar100m)Water at ambient temperature in straight pipe

18rdquo 14rdquo

1 0458 0726 0251 0170 38rdquo 12rdquo

2 0918 2590 0501 0600 0272 0136 0170 0044 34rdquo

3 1380 5590 0752 1220 0407 029 0255 0091 0144 0023 1rdquo

4 1840 9570 1000 2090 0543 048 0340 0151 0192 0038 0120 0012

5 2290 14450 1250 3180 0679 070 0425 0223 0241 0057 0150 0017

6 1500 4460 0815 0980 0510 0309 0289 0077 0180 0024 114rdquo

8 2010 7360 1090 1690 0680 0524 0385 0129 0240 0041 0138 0011 112rdquo

10 1360 2520 0850 0798 0481 0193 0300 0061 0172 0015 0127 0008

15 2040 5370 1280 1690 0722 0403 0450 0124 0258 0032 019 0015

20 2rdquo 2720 9240 1700 2840 0962 0683 0600 0210 0344 0054 0254 0026

30 0231 0016 212rdquo 2550 6170 1440 1450 0900 0442 0517 0114 038 0053

40 0308 0027 0216 0010 3400 10720 1920 2500 1200 0758 0689 0193 0507 0091

50 0385 0039 0270 0017 2410 3830 1500 1140 0861 029 0634 0135

60 0462 0055 0324 0023 2890 5410 1800 1610 103 0400 0761 0187

70 0539 0098 0378 0031 3rdquo 3370 7270 2100 2150 1210 0541 0888 0248

80 0616 0092 0432 0039 028 0014 312rdquo 2400 2760 1380 0690 1010 0315

90 0693 0115 0486 0048 0315 0017 0235 0008 2700 3470 1550 0862 1140 0397

100 0770 0141 0540 0059 035 002 0261 0010 4rdquo 3000 4250 1720 1050 1270 0488

150 1150 0295 0810 0125 0524 0042 0392 0021 0304 0011 4500 9300 2580 2260 1900 1030

200 1540 0512 1080 0212 0699 0072 0523 0036 0405 0019 3440 3910 2540 1810

250 1920 0773 1350 0322 0874 0108 0653 0053 0507 0028 5rdquo 3170 2740

300 2310 1100 1620 0449 105 0152 0784 0074 0608 004 0387 0014 3800 3820

350 2690 1470 1890 0606 122 0203 0915 0099 0710 0053 0452 0018 6rdquo 4440 5180

400 3080 1920 2160 0780 14 0264 1050 0128 0811 0068 0516 0023 0375 0009 5070 6690

450 3460 2390 2430 0979 157 0328 1180 0161 0912 0084 0581 0028 0402 0012 5710 8450

500 3850 2950 2700 1200 175 0403 1310 0196 1010 0101 0646 0034 0447 0014

550 4230 3550 2970 1440 192 0479 1440 0232 1110 0122 0710 0041 0491 0016

600 4620 4200 3240 1690 2100 0566 1570 0273 1220 0146 0775 0047 0536 0019

650 5000 6880 3510 1970 2270 0658 1700 0319 1320 0169 0839 0055 0581 0022

700 5390 5630 3780 2280 2450 0759 1830 0368 1420 0194 0904 0063 0625 0025

750 577 6440 4050 2600 2620 0863 1960 042 1520 0218 0968 0072 067 0029

800 4320 2950 2800 0977 2090 0473 1620 0246 1030 0081 0715 0032 8rdquo

850 4590 3310 2970 1090 2220 0528 1720 0277 1100 0091 076 0036 0439 0009

900 3150 1220 2350 0585 1820 0308 1160 0100 0804 0041 0465 001

950 3320 1350 248 0649 1930 0342 1230 0111 0849 0045 0491 0012

1000 3500 1500 261 0714 2030 0377 1290 0122 0894 0049 0516 0013

1100 3850 1750 2870 0860 2230 0452 1420 0147 0983 0059 0568 0015

1200 4200 2140 3140 1020 2430 0534 1550 0172 1070 0069 0620 0018

1300 3400 1190 2640 0627 1680 0200 1160 008 0671 0021

1400 3660 1370 2840 0722 1810 0232 1250 0091 0723 0024

1500 3920 1560 3040 0818 1940 0264 1340 0105 0775 0027

1600 4180 1780 3240 0924 2070 0297 1430 0118 0826 0031

1700 10rdquo 4440 1990 3450 1040 2190 0331 1520 0132 0878 0035

1800 0590 0012 3650 1160 2320 0369 1610 0147 0930 0039

1900 0622 0014 3850 1280 2450 041 1700 0163 0981 0042

2000 0655 0015 40500 1410 2580 0452 1790 0181 1030 0046

2200 0721 0018 4460 1700 2840 0545 1970 0217 1140 0056

2400 0786 0021 12rdquo 3100 0645 2140 0253 1240 0065

2600 0852 0025 0600 001 3360 0749 2320 0296 1340 0076

2800 0917 0028 0646 0012 14rdquo 3610 0859 2500 0339 1450 0087

3000 0983 0032 0692 0013 0573 0008 3870 0982 268 0387 1550 0099

3500 1150 0043 0810 0018 0668 0011 4520 1330 3130 0526 1810 0134

4000 1310 0055 0923 0023 0764 0014 16rdquo 5160 1720 3570 0673 2070 0172

4500 1470 0068 1040 0029 0860 0018 0658 0009 4020 0853 2320 0214

5000 1640 0084 1150 0034 0955 0022 0731 0011 4470 1040 2580 0262

6000 1960 0118 1380 0049 1150 0031 0877 0016 18rdquo 5360 1470 3100 0373

7000 2290 0158 1610 0065 1340 0042 1020 0021 0808 0012 6250 2000 3610 0499

8000 2620 0204 1840 0085 1530 0054 1170 0027 0924 0015 7150 2590 4130 065

9000 2950 0256 2080 0107 1720 0067 1310 0033 1040 0019 4650 0816

10000 3280 0313 2310 0130 1910 0081 1460 0041 1150 0023 5160 0992

Q V Y V P V Y V Y V Y V Y V Y V Y [lm] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m]

PIPI

NG

78 wwwpnr-nozzlescom CTG SH 07 EU

10 75 12 038 4 11 50

15 80 12 044 4 11 55

20 90 14 065 4 11 65

25 100 14 082 4 11 75

32 120 14 117 4 14 90

40 130 14 139 4 14 100

50 140 14 162 4 14 110

65 160 14 214 4 14 130

80 190 16 343 4 18 150

100 210 16 422 4 18 170

125 240 18 611 8 18 200

150 265 18 751 8 18 225

175 295 20 1020 8 18 255

200 320 20 1230 8 18 280

250 375 22 1850 12 18 335

300 440 22 2550 12 22 395

350 490 22 3180 12 22 445

400 540 22 3850 16 22 495

450 595 22 4700 16 22 550

500 645 24 6040 20 22 600

PN 6 (UNI 6091)

ND 6 (DIN 2527) DN Flange Holes

D t W N Oslash a

90 14 063 4 14 60

95 14 071 4 14 65

105 16 101 4 14 75

115 16 122 4 14 85

140 16 180 4 18 100

150 16 209 4 18 110

165 18 287 4 18 125

185 18 365 4 18 145

200 20 461 8 18 160

220 20 565 8 18 180

250 22 812 8 18 210

285 22 1050 8 22 240

315 24 1410 8 22 270

340 24 1620 12 22 295

405 28 2510 12 25 355

460 28 3520 12 25 410

520 30 4820 16 25 470

580 32 6350 16 30 525

640 32 7720 20 30 585

715 34 1020 20 33 650

PN 16 (UNI 6093)

ND 16 (DIN 2527) Dimensions Holes

D t W N Oslash a

ND 10 (DIN 2527) Dimensions Holes

D t W N Oslash a

90 14 063 4 14 60

95 14 071 4 14 65

105 16 101 4 14 75

115 16 122 4 14 85

140 16 180 4 18 100

150 16 209 4 18 110

165 18 287 4 18 125

185 18 365 4 18 145

200 20 461 4 18 160

220 20 565 8 18 180

250 22 812 8 18 210

285 22 1050 8 22 240

315 24 1410 8 22 270

340 24 1650 8 22 295

395 26 2410 12 22 350

445 26 3080 12 22 400

505 26 3960 16 22 460

565 26 4960 16 25 515

615 26 5860 20 25 565

670 28 7530 20 25 620

PN 10 (UNI 6092)

LegendaDN Nominal DiameterD Flange External Diametert Flange ThicknessW Flange WeightN Hole NumberOslash Hole Diametera Hole axis

PIPING Flange dimensionsPI

PIN

G

Blind flanges to DIN 2527

79wwwpnr-nozzlescomCTG SH 07 EU

LegendDN Nominal DiameterD Flange External Diametert Flange ThicknessW Flange WeightN Hole NumberOslash Hole Diametera Hole axis

12rsquorsquo 889 111 08 4 159 603

34rsquorsquo 984 127 09 6 159 698

1rsquorsquo 1079 143 10 4 159 794

114rsquorsquo 1175 159 13 4 159 889

112rsquorsquo 1270 175 14 4 159 984

2rsquorsquo 1524 190 18 4 190 1206

212rsquorsquo 1778 222 32 4 190 1397

3rsquorsquo 1905 238 41 4 190 1524

312rsquorsquo 2159 238 59 8 190 1778

4rsquorsquo 2286 238 77 8 190 1905

5rsquorsquo 2540 238 91 8 222 2159

6rsquorsquo 2794 254 118 8 222 2413

8rsquorsquo 3429 286 204 8 222 2984

10rsquorsquo 4064 302 318 12 254 3619

12rsquorsquo 4826 317 500 12 254 4318

14rsquorsquo 5334 349 600 12 286 4762

16rsquorsquo 5969 365 770 16 286 5397

18rsquorsquo 6350 397 950 16 317 5778

20rsquorsquo 6985 429 1230 20 317 6350

22rsquorsquo 7493 460 1510 20 349 6921

ANSI 150 lb DN Flange Holes

D t W N Oslash a

952 143 10 4 159 667

1175 159 14 4 190 825

1238 175 18 4 190 889

1333 206 27 4 190 984

1556 222 36 4 222 1143

1651 254 45 8 190 1270

190S 286 68 8 222 1492

209S 317 91 8 222 1683

2286 349 132 8 254 1841

2540 349 150 8 254 2000

2794 381 200 8 254 2349

3175 413 277 12 254 2699

3810 476 450 12 286 3302

4445 540 700 16 317 3873

5207 571 103 16 349 4508

5842 603 141 20 349 5143

6477 635 181 20 381 5715

7112 667 228 24 381 6286

7747 698 282 24 413 6858

8382 730 311 24 444 7429

ANSI 400 lb Dimensions Holes

D t W N Oslash a

ANSI 300 lb Dimensions Holes

D t W N Oslash a

952 143 10 4 159 667

1175 159 14 4 190 825

1238 175 18 4 190 889

1333 190 27 4 190 984

1556 206 32 4 220 1143

1651 222 36 8 190 1270

1905 254 54 8 222 1492

2095 286 73 8 222 1683

2286 302 95 8 222 1841

2540 317 122 8 222 2000

2794 349 159 8 222 2349

3175 365 227 12 222 2699

3810 413 370 12 254 3302

4445 476 580 16 286 3873

5207 508 840 16 317 4508

5842 540 1070 20 317 5143

6477 571 1390 20 349 5715

7112 603 3900 24 349 6286

7747 635 2230 24 349 6858

8382 667 2700 24 413 7429

PIPING Flange dimensions

PIPI

NG

flanges to ANSI norms

80 wwwpnr-nozzlescom CTG SH 07 EU

PIPI

NG

Sieves are used both for determining the particle size distribution of a granular material and to filter solid particles in a liquid Normally the sieve is made with a fabric whose characteristic dimensions areL is the Opening Width (free passage)D is the Diameter of the wireP is the Pitch of the wireS is the Thickness of the fabricTo classify particle sizes there is some Sieve Series according to specific standardsthe most known are Tyler Sieve Series US Sieve Series UK Sieve SerieshellipThe Tyler mesh size indicates exactly the number of openings per linear inch of mesh

L[microm]

TYLER Sieve[Mesh No]

ASTM E11 Sieve[Mesh No]

BS 410 Sieve[Mesh No]

DIN 4188 Sieve[mm]

5 2500 2500 0005

10 1250 1250 0010

15 800 800 0015

20 625 635 625 0020

22 0022

25 500 500 500 0025

28 0028

32 na 450 440 0032

36 0036

38 400 400 400

40 0040

45 325 325 350 0045

50 0050

53 270 270 300

56 0056

63 250 230 240 0063

71 0071

75 200 200 200

80 0080

90 170 170 170 0090

100 0100

106 150 140 150

112 0112

125 115 120 120 0125

140 0140

150 100 100 100

160 0160

180 80 80 85 0180

200 0200

In the german standard (DIN norm 4188) the Opening Width (L) is given in millimeters

PIPING Sieve size conversion chartPI

PIN

G

81wwwpnr-nozzlescomCTG SH 07 EU

L[microm]

TYLER Sieve[Mesh No]

ASTM E11 Sieve[Mesh No]

BS 410 Sieve[Mesh No]

DIN 4188 Sieve[mm]

212 65 70 72

250 60 60 60 0250

280 0280

300 48 50 52

315 0315

355 42 45 44 0355

400 0400

425 35 40 36

450 0450

500 32 35 30 0500

560 0560

600 28 30 25

630 0630

710 24 25 22 0710

800 0800

850 20 20 18

900 0900

1000 16 18 16 1000

1120 1120

1180 14 16 14

1250 1250

1400 12 14 12 1400

1600 1600

1700 10 12 10

1800 1800

2000 9 10 8 2000

2240 2240

2360 8 8 7

2500 2500

2800 7 7 6 2800

3150 3150

3350 6 6 5

3550 3550

4000 5 5 4 4000

4500 4500

4750 4 4 35

5000 5000

5600 35 35 3

6700 3 0265 in 1

8000 25 516 in na

Applicable standards areISO 565 (1987) ISO 3310 (1999) ASTM E 11-70 (1995)DIN 4188 (1977) BS 410 (1986) AFNOR NFX11-501 (1987)

Legend Q Water Flow Rate V Velocity P Pressure drop Pressure drop in bar per 100 meters of straight pipe (water at ambient temperature)

PIPING Sieve size conversion chart

PIPI

NG

Besides its main range of nozzles for industrial applications PNR manufactures a wide range of complementary products and systems to optimize the use of spray jets and fluids control in most of the modern industrial processes

PNR PRODUCT RANGE

CTG AC

CTG LS

CTG UG

CTG AZ

Complementary Products andAssembly FittingsA complete line of nipples clamps swivel joints and everything that helps you to assemble align and service your spraying systems quickly and easilyAir blowers mixing eductors filters clean-ing guns and lances hose reels steam heaters pressure tanks quick couplings to help you build up a professional system upgraded to the latest standards

Tank washing systemsA complete range from simple fixed washing heads to the two-axis heads from mushroom nozzles to fluid driven reaction heads up to the motor driven washing heads equipped with a pneu-matic or electric motorAll for the inside cleaning of industrial tanks according to the latest technology accessories included

Spray nozzles for industrial applicationsOne of the world most complete lines of nozzles for numberless industrial appli-cations Nozzles with a wide openings range various types of vanes several spray patterns anti-clog design available in small and big dimensions and made in many food-grade materials like PFTE and Stainless Steel 316L with threaded and flanged connections

Air assisted atomizersUltrasonic classic and automatic atomiz-ers for the finest atomization in any insus-trial process High quality machining and strict quality control ensure your systems top professional resultsProgramming and control panels for an easy assembly of complete humidification systems

CTG SP

CTG PM

CTG SW

CTG LN

Spraydry nozzlesAir assisted or hydraulic high pressure ato-mizers made in high-quality metal alloys or tungsten carbideA complete line of nozzles for the moder-nization of existing facilities at competitive prices To ensure highly accurate results and a long service life these nozzles are manufactured with the finest materials and technologically advanced machines

Paper mill productsA line of products specifically designed for perfect results on paper mill machines including disc nozzles patented for self-cleaning filters flat jet nozzles with orifices in sapphire ruby and ceramic oscillating tubes equipped with a computer driven motor

Steelwork nozzlesA complete line of nozzles for steelwork applications including continuous casting air atomizers and conventional nozzles descaling nozzles for high pressure sys-tems dovetail tips for cylinders cooling and high capacity flanged nozzles for coke quenching

Gas cooling lancesSpillback or air assited lances for gas coo-ling in steelworks cement plants and other industrial applicationsWe can supply spare parts upgrade your plant and even supply a complete PLC driven system to enhance the towers per-formances to the highest efficiency level allowed by today technology

wwwpnr-nozzlescomCTG SH 07 EU

CTG SH 07 EUwwwpnr-nozzlescom

STAM

PATO

IN E

U 09

09

copy B

ellamp

Tany

Our products are distributed through

We are also represented in

PNR AmericaPNR Asia

PNR BalticPNR Benelux

PNR ChinaPNR Czech Republic

PNR DeutschlandPNR France

PNR ItaliaPNR Mexico

PNR UK

ArgentinaAustraliaAustriaBrazil

BulgariaCanada

ChileCroatia

DenmarkFinlandGreece

IndiaIndonesia

IranIrelandKorea

MalaysiaNorway

New ZealandPakistan

PhilippinesPoland

Portugal

RumeniaRussiaSerbia

SingaporeSlovenja

SpainSouth Africa

SwedenTaiwanTurkey

Venezuela

Page 22: SPRAY CTG SH 07 EU ENGINEERING HANDBOOK

22 wwwpnr-nozzlescom CTG SH 07 EU

LIQU

ID S

PRAY

AND

SPRA

Y NO

ZZLE

SLIQUID SPRAY AND SPRAY NOZZLES Spray angle

Depending upon the nozzle design variations of feed pressure may have a great influence on the spray angle valueGenerally with increasing pressure turbulence full cone nozzles will produce narrower angles flat jet nozzles will show a wider angle spray while nozzles working on the deflection principle like spiral nozzles and K style flat jet nozzles will be less affected by pressure changesAll nozzles will not function properly with very low pressure values (from 05 bar down depending upon nozzle type ) with a marked decay in performance larger drops not well defined spray pattern lower spray angle values

The above pictures show spray angles for different nozzles and different pressure valuesShould your application strictly require that a given value of the spray angle is obtained under a given pressure value or pressure range of values please obtain a test report from our laboratories

Full cone nozze DDW 2235

Flat jet nozzleJCW 2245

Spiral nozzeECW 2230

Pressure 05 bar Pressure 05 bar Pressure 05 bar

Pressure 3 bar Pressure 3 bar Pressure 3 bar

Pressure 10 bar Pressure 10 bar Pressure 10 bar

Photo obtained with 120000s flashlight

picture 1

picture 4

picture 7

picture 2

picture 5

picture 8

picture 3

picture 6

picture 9

NotePicture 2 shows clearly the droplet generation mechanism as described at page 15

23wwwpnr-nozzlescomCTG SH 07 EU

Terms and definitions

A very important characteristic of a spray nozzle is a parameter called Spray Distribution which gives a precise information about how evenly the drops of the spray are distributed onto the area covered by the sprayIt is self understood that normally it is preferable to obtain the most even distribution possibleIn the past this was done through the visual examination of a diagram reporting the quantity of water contained for example in glass pipes aligned onto the spray coverage areaPnr has determined to obtain such a result in a scientific way through high technology instrumentation as shown in the pictures below showing one of our patternators and a typical distribution diagram

Now to the spray geometry and some definition letrsquos consider a nozzle with a capa-city Q at the pressure PAt every value for distance H which we call height of spray we can define a plane lsquonrsquo normal to the nozzle axis on which a line can define the intersection of the spray onto the planeThe area covered by the spray on the plane lsquonrsquo has a surface S depending from the following parametersa) Spray pattern Fb) Opening angle of the spray αc) Height of the spray H

We can then write S=S( F α H )

In case of a full cone nozzle S is a circle with diameter C and S = 0785 C2

The capacity of the nozzle flows through the surface S but each smaller area inside the surface S will probably have a different value for the flow passing through itWe introduce then the value of Specific Capacity q

1) Specific Capacity

The function q depends upon the single point (xy) in the section S and then

Determining the function q is however very expensive therefore in practice two different functions are used which give in most occurrences sufficient information

2) Linear Distribution

3) Angular distribution

part Qpart x

qx =

Diagram 1

q = limΔS 0

ΔQΔS

q = = f (x y H)part Qpart S

part Qpart φ

qφ =

ΔQ is the liquid flowing through a surface ΔSwhere ΔS is a fraction of the surface S

x and y are the local coordinates in the section planewhere H is the distance of the test surface from the nozzle orifice

partQ is the variation in capacitywhere partx is the variation of a generic linear coordinate

partQ is the variation in capacitywhere partφ is the variation of a generic angular coordinate

LIQU

ID S

PRAY

AND

SPRA

Y NO

ZZLE

S

LIQUID SPRAY AND SPRAY NOZZLES Spray Distribution

24 wwwpnr-nozzlescom CTG SH 07 EU

LIQUID SPRAY AND SPRAY NOZZLES Spray Distribution

Values extracted from these functions can characterize the spray and allow for drawing the diagrams defined as Distribution Curves

Analyzing the above curves it is possible to determine the type of water distribution along the spray coverage and the type of spray pattern like for example a full cone hollow cone flat or straight jet spray

Distribution measurement

The water distribution along the spray coverage is determined by means of an instrument called Patternator

A patternator consists of the following parts 1) Liquid collector2) Cell block3) Measure block4) Unloading block

The nozzle is above the instrument and it is orienta-ted in such a way the jet is collected into the upper liquid collectorThe liquid collector can be linear ( diagram 5 ) or round ( diagram 6 ) according to the test being runFrom the single parts in the collector the liquid is sent into the corresponding cells below (2)

The Measure block (3) determines the liquid content in each single cell then the unloading block (4) empties the instrument sending the liquid to the collection drain

There are two types of patternators

Analogic1 the different levels of liquid is visible through the transparent walls of the cells or pipes sometimes containing some kind of floating balls and a picture can be taken with a cameraDigital2 Delivering an automatic reading of the values in the cells the values being supplied as an electronic file from which a distribution curve can be easily obtained

Diagram 2 Linear distribution Diagram 3 Angular distribution

Diagram 4

Diagram 6 Circular collectorDiagram 5 Linear collector

LIQU

ID S

PRAY

AND

SPRA

Y NO

ZZLE

S

25wwwpnr-nozzlescomCTG SH 07 EU

LIQUID SPRAY AND SPRAY NOZZLES Spray Distribution

Normalizing distribution curve

The values obtained from the cells of the patternator showing the water quantity collected in the single cells allow for preparing a Distribution curve which can be given as a single line curve or as a row of vertical barsThese resemble the liquid level collected into the glass pipes of the old type instrumentation

The curves prepared based on the liquid level in the single cells still are not precise they depend in fact from the testing time the longer this time the larger the liquid quantity sprayedTo eliminate the influence of time from the test it is necessary to transform the effective curves to normalized curves

Normalized4) linear distribution

Normalized5) angular distribution

Please note that Maximum value is the one belonging to the series of values measured in the cellsIn addition to the distribution it is possible to normalize the intervals to with the following formulas

Normalized 6) linear interval

Normalized 7) angular interval

The linear normalized amplitude is defined inside an interval [-1 +1]The angular normalized amplitude is defined inside an interval [0+2π]

Diagram 7 Effective linear distribution curve Diagram 8 Effective angular distribution curve

Mx

xx q

q=δ

N

πθ

2=Δ

Diagram 9 Normalized linear distribution curve Diagram 10 Normalized angular distribution curve

qx is the linear distribution of a generic cellwhere qx

M is the maximum linear distribution measured

qφ is the linear distribution of a generic cellwhere qφ

M is the maximum linear distribution measured

2 is the normalized linear amplitude of the spraywhere N is the number of active cells (active cells = cells containing liquid)

2π is the normalized angular amplitude of the spraywhere N is the number of active cells (active cells = cells containing liquid)

Mq

q

ϕ

ϕϕδ =φ

φ

φ

2

N=Δλ

2

N=Δλ

LIQU

ID S

PRAY

AND

SPRA

Y NO

ZZLE

S

26 wwwpnr-nozzlescom CTG SH 07 EU

Evaluation of spray distribution

To evaluate distribution curves it is necessary to take three properties into consideration

a) UNIFORMITY b) MONOTONY c) SIMMETRY

As described in the following diagrams and definitions

a) UNIFORM A distribution that minimizes the ratio AAdeg

b) MONOTONE Is a distribution with a curve which grows on the left side and decreases on the left side c) SYMMETRIC Is a distribution which minimizes the Ratio A+A-

Based on the above definitions the following curves show the ideal situations

The three properties are then evaluated by means of the following parameters

1 Integral uniformity

2 Incremental uniformity

3 Symmetry index

Complete details about the above formulas and definition can be found in our Technical Bulletin REL 080002 which shall be released from our Technical Department on request

Diagram 12Normalized and monotone distribution

Diagram 11Normalized and monotone distribution

Diagram 14Ideal monotony

Diagram 15Ideal symmetry

Diagram 13Ideal uniformity

1001 sdot=MA

AU

1002

2 sdot=lowastσ

U

1001

sdot⎥⎦

⎤⎢⎣

sdotminus=

lowast

lowast

δ

ε

NI S

sum minus=lowast

M

i iδδε

A is the area included in the normalized curvewhere Adeg is the rest of the area included in the 2x1 rectangle

Left side is the area -1 0where Right side is the area 0 +1

A+ is the area included below the curve on the right sidewhere A- is the area included below the curve on the left side

where

where δrsquo is the value of normalized liquid content in the symmetric cell N number of cells containing liquid in half of the diagram

lowast

lowast sum=

N

N

i i

δ

δ N Number of cells containing liquid

A area included below the curve AM area included below the ideal curvewhere

sum minus= +lowast

1

N

i ii δδσ

N Number of cells containing liquid

LIQU

ID S

PRAY

AND

SPRA

Y NO

ZZLE

SLIQUID SPRAY AND SPRAY NOZZLES Spray Distribution

27wwwpnr-nozzlescomCTG SH 07 EU

Liquids are characterized for their property of undergoing continuous deformation when subjected to shear stress The property of fluids (liquids or gases) to resist flowing due to the existence of internal friction within the fluid is called visco-sity

Thus if we imagine the different layers of fluid sliding one over the other with friction we can imagine that viscosity is defined the force required to move a unit area of fluid for a unit distance Viscosity is measured with many different systems among which the most used are the following

The following table shows correspondences between the most used viscosity units

The viscosity value of a liquid depends upon the temperature therefore the viscosity value must always be given with reference to a temperature value The viscosity of water (20deg C) is 1 Centipoise and 1 Centistoke since water mass density = 1

KINEMATIC SAYBOLT SAYBOLT ENGLER VISCOSITY UNIVERSAL FUROL

Centistoke Sq feetsec SSU SSF Degrees

100 000001076 310 --- 100

500 000005382 424 --- 137

1000 00001076 588 --- 183

1566 00001686 80 --- 245

2052 00002209 100 --- 302

2515 00002707 120 --- 357

4295 00004623 200 --- 592

1080 0001163 500 523 1460

1510 0001625 700 720 2044

1942 0002090 900 921 2628

3023 0003254 1400 143 4090

3885 0004182 1800 183 5260

5394 0005806 2500 254 7300

10788 001161 5000 509 146

15103 001626 7000 712 204

19419 002092 9000 916 263

32365 003483 15000 1526 438

METHOD UNIT DIMENSIONS NOTES

1 Dynamic viscosity(Absolute viscosity) Poise ML T-1 Poise = 100 Centipoises = (1 dyne per seccm2)

2 Kinematic viscosity Stoke L2 T-1 1 Stoke = 100 Centistoke = (cm2sec)Kinematic viscosity = Dynamic viscositydensity

3 SSUSSF

One of the most widely instruments to determine is the Saybolt viscosimeter which measures the time in seconds required for a fixed volume of a given liquid to flow through an orificeSSU = Seconds Saybolt Universal relates to a smaller orifice for less viscous liquidsSSF = Seconds Saybolt Furol relates to a larger orifice for more viscous liquids

LIQUID SPRAY AND SPRAY NOZZLES Influence of liquid viscosity

LIQU

ID S

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AND

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S

28 wwwpnr-nozzlescom CTG SH 07 EU

Viscosity influence on nozzle flow rate

AlI nozzle Catalogue data refer to spraying water (water cinematic viscosity is equal to 1 Centistoke)A liquid with viscosity higher than water will require more energy to be pumped and sprayed and will flow with lower velocity at the same pressure and this will cause a reduction in the turbulence of the flow For the above reason nozzles working on the turbulence principle like normal full cone nozzles and whirl hollow cone nozzles will show an increase in capacity while spraying liquids with viscosity higher than water This increase is very consistent for small size nozzles where the small radius of the whirl chamber tends to cause high turbu-lence in the flow and tends to diminish and to disappear for nominal capacity valves (capacity values at 3 bar) larger than 15 liters per minute

The graph below shows for a liquid with a viscosity of about 4 Centistokes typical variations in the nozzle flow rate value for different values of the nozzle whirl chamber diameter As it may be seen these variations can be neglected in most practical applications where nozzles with whirl chamber diameters well over 3 mm are used

For other types of nozzles not working on the turbulence principle the increase on viscosity will simply reduce the liquid exit velocity at the orifice thus causing a decrease in capacity Experience shows that this decrease ranges between 3 and 6 of nominal water capacity that is to say that the variation introduced is in the same order of magnitude as the nozzle flow rate toler-ance

Viscosity influence on nozzle spray angle and spray pattern

With reference to the theory of jet break-up and droplet information it can be easily imagined that spraying a liquid more viscous than water is a difficult task

Al the properties of the spray tend to worsen therefore one can expectA higher value for the minimum operating pressure that is the pressure value which allows for obtaining a well defined 1 spray with the expected spray angle A worse spray distribution since the viscous behavior of the liquid makes it more difficult to pro-duce fine droplets and 2 to distribute them evenly with the desired spray pattern A narrower spray angle It is difficult to give guidelines since results on different nozzles at different pressures and with 3 different liquids are scarcely predictableHowever our experience shows that in many cases the use of impact nozzles can give acceptable results where all other type of nozzle failsA laboratory test or a field test are stili the safest way to obtain sound results

50

45

40

35

30

25

20

15

10

5

0 2 3 4 5 6 7 8 9

Increase Flow rate vs Whirl Chamber Diameter

Incr

ease

Flo

w R

ate

[mm

]

Whirl Chamber Diameter [mm]

LIQUID SPRAY AND SPRAY NOZZLES Influence of liquid viscosityLI

QUID

SPR

AYAN

D SP

RAY

NOZZ

LES

29wwwpnr-nozzlescomCTG SH 07 EU

With reference to the Bernoulli Rule as exposed in page 6 one can say that the pressure energy of the liquid flow at the nozzle inlet is transformed totally (minus some losses due to friction inside the nozzle) into liquid velocity at the nozzle orificeCatalogue figures give nozzle capacities when spraying waterIf the specific gravity or density of the liquid is different from that of water the available pressure energy will produce a different liquid velocity at the nozzle orificesIn other words a given quantity of energy will spray always the same quantity of liquid mass but different volumes (flow rates) according to the liquid specific gravity or density

Therefore a liquid heavier than water will exit the nozzle with a lower velocity at lower flow rate while to the contrary a liquid lighter than water will be sprayed at higher velocity at higher flow rate

The following formula is to be applied

The table below gives the value of a correction factor to obtain the flow rate of a liquid with different specific weight as water

WhereQL Liquid flow rateQW Water flow rateF Correction factor

kgliter Libregallon F

06 50 129

07 58 120

08 67 112

09 75 105

10 83 100

11 92 095

12 100 091

13 109 088

14 117 085

15 125 082

16 134 079

17 142 077

18 150 075

19 159 073

20 167 071

QL = F QW8

LIQUID SPRAY AND SPRAY NOZZLES Influence of liquid specific gravity

LIQU

ID S

PRAY

AND

SPRA

Y NO

ZZLE

S

30 wwwpnr-nozzlescom CTG SH 07 EU

The spraying water impact of a nozzle depends on several factors and more precisely spray distribution pattern and spray angle The first step to calculate the impact value which is usually expressed in Kilograms per square centimeter is to deter-mine Total Theoretical lmpact Value using the following formula

The obtained value has to be multiplied by the Total Theoretical Impact per Square Centimeter Coefficient (E)The final value is the Spraying Liquid Impact expressed in kgpcm2Of course not alI the energy of the fluid vein is transferred to the impact point

A part of this energy sometimes a considerable part goes to obtain a desired spraying angle by having the liquid vein acquire a high rotational speed inside the whirl chamber The highest value of impact is obtained with straight jet nozzle and the value can be calculated multiplying spraying pressure per 19The tables below containing the Total Theoretical Impact sqcm coefficient values for different spray pattern nozzles for a dis-tance of 300 mm

[kgpcm2]

TOTAL THEORETICAL IMPACT PER SQ CM COEFFICIENT AT DISTANCE OF 300 MM (E)

Spray Flat jet nozzle Spray Full cone nozzle Spray Hollow cone nozzle Angle Angle Angle

15deg 0300 15deg 0110 25deg 0180 35deg 0130 30deg 0025 40deg 0120 50deg 0100 50deg 0010 65deg 0070 65deg 0004 60deg80deg 001002 80deg 0050 80deg 0002 100deg 0001

WhereQ is the flow rate at working pressure in lpmP is the pressure value in kgpcm2

[kgpcm2]TTI = 0024 Q P

SLI = E TTI

9

10

LIQU

ID S

PRAY

AND

SPRA

Y NO

ZZLE

SLIQUID SPRAY AND SPRAY NOZZLES Jet impact

31wwwpnr-nozzlescomCTG SH 07 EU

Jet impact diagram

A further parameter to characterize the performance of a spray nozzle is the distribution of the jet impact force which could be derived by means of mathematical methods from the values of the spray distribution onto the surface covered by the spray but which can more easily be measured with the help of specifically designed instrumentation

In some applications the jet impact force Is the most important parameter used to realize the required processSteel sheet descaling in a rolling mill is a typical example where the jet impact is required to take away the surface scale and obtain a perfectly even surfaceFor that reason special nozzles have been developed to perform this very task where service life impact value and spray distribution reach the values required for satisfactory resultThese test are performed in a laboratory equipped with a specifically designed instrumentation where the high pressures involved in these process can be reached which can measure the pressure values along a matrix of points distributed in the spray area covered by the nozzle

These values are supplied both in a table of values and as a 3D pressure diagram similar to those shown below

On such applications where producing high impact values in the jet is necessary it is of paramount importance that the liquid flow turbulence is kept to a minimum and therefore it is widely used to insert into the nozzle entrance devices designed to improve the operating conditions by forcing the liquid flow through straight passages with several different shapes by doing so the impact delivered by the spray is increased with the same feed pressure

One typical shape used by Pnr is shown on the right and the two dia-grams below show the impact force diagrams for the same nozzle with and without a flow straightener the reduction of flow turbulence can lead in increase of impact force often higher than 20Further improvements of course are available when the nozzle inside profile is properly designed in order to avoid sharp cross section changes and all surfaces are finished as smoothly as possible

Typical design of a Pnr flow straightener

Impact pressure diagram with flow straightenerImpact pressure diagram without flow straightener

LIQU

ID S

PRAY

AND

SPRA

Y NO

ZZLE

S

LIQUID SPRAY AND SPRAY NOZZLES Jet impact

32 wwwpnr-nozzlescom CTG SH 07 EU

LIQUID SPRAY AND SPRAY NOZZLES Pressure drop through a nozzle

Pressure drop through a nozzle

Some of our customers have asked us In the past which Is the pressure drop through a nozzle since they consider a nozzle one of the parts in a piping like a valve or an elbow which causes a given pressure drop along the line

The reality is different and can be easily understood when considering the Bernoulli formula [2] as given at page 19 of this manual the formula says that the total energy of a liquid flow is made from the addition of three facors

Potential energy due to elevationbullPressure energybullVelocity energybull

When we apply the formula at the entrance and at the outlet ( the orifice ) of a nozzle and we neglect the influence of turbulence losses in between we can easily see that

The potential energy variation can be neglected because of the limited dimensions of the nozzle since the distance bullbetween the nozzle entrance and the nozzle orifice plays no role-The pressure energy variation is important since the liquid pressure value falls abruptly from the pressure inside the feed bullpipe to the ambient pressureThe velocity energy variation is also consistent since the liquid is ejected from the orifice at high speedbull

In other words the pressure energy of the liquid flowing through the orifice is suddenly transformed in liquid drops velocity which is exactly what a nozzle is designed to do

This is shown from equation [3] at page 19 which allows the exit velocity from the nozzle to be calculated from the pressure inside the pipe ( we actually consider the pressure difference between the inside of the pipe and the ambient pressure in this formula )

In other words all the energy still available at the nozzle is converted into velocity or if you so prefer you have a total pressure fall The system designer shall therefore evaluate all the pressure drop between the pump outlet flange and the nozzle entrance in order to be sure that the nozzle feed pressure is sufficient to assure the desired capacity for the liquid being sprayed

parameters valuesat nozzle outlet

nozzle inlet nozzle oulet or orice

feed pressure

inlet velocity

parameters valuesat the nozzle inlet

(A)potential elevation

energy

(A)velocity ( kinetic ) energy

(A)pressure energy

ambient pressure

exit velocity

LIQU

ID S

PRAY

AND

SPRA

Y NO

ZZLE

S

33wwwpnr-nozzlescomCTG SH 07 EU

NOZ

ZLE

MAT

ERIA

LS

The choice of the right material for a nozzle is sometimes the most important one to do since the nozzle operating life depends upon it There are several factors to influence or shorten the nozzle operating life sometimes more than one at the same time the most important being

Wear from solid particles suspended into the liquid being sprayed1 Chemical corrosion from the liquid being sprayed 2 Chemical corrosion from the ambience outside the nozzle3 Exposure to high temperature 4 Exposure to mechanical shocks5

NOZZLE MATERIALSPnr material codes 34Properties of materials 35Mechanical properties of materials 39Chemical resistance of materials 40

NOZZLE MATERIALS

34 wwwpnr-nozzlescom CTG SH 07 EU

PNR has adopted a short code to identify construction materials for nozzles and nozzle partsHere below the most frequenty used materials

MATERIAL STANDARDS

The following standards are mentioned with reference to materials identification

NOZ

ZLE

MAT

ERIA

LS

A1 Free Cutting Steel E1 TEFLONreg (PTFE) L3 NICROFERreg 5923

A2 Carbon Steel E3 DELRINreg (POM) L4 STELLITEreg 6

A8 Zinc Plated Mild Steel E6 PERSPEXreg (PMMA) L5 HASTELLOYreg B2

A9 Nickel Plated Mild Steel E7 VITONreg (FPM) L6 HASTELLOYreg C4

B2 AISI 304 Stainless Steel E8 NBR- Sh 70 Rubber L61 HASTELLOYreg C22

B3 AISI 316 Stainless Steel E81 SANTOPRENEreg Rubber L62 ULTIMETreg

B31 AISI 316L Stainless Steel E82 KLINGERITEreg L7 NICKEL 201

B4 AISI 321 Stainless Steel E83 HYPALONreg L8 HASTELLOYreg C276

B8 AISI 309 Stainless Steel E91 Silicon L9 SANICROreg 28 SS

B81 AISI 310 Stainless Steel F12 Tungsten Carbide (TC) N1 AISI 302 Stainless Steel

C1 AISI 420 St Steel hardened F2 PIREXreg P6 ABS

C4 AISI 317 Stainless Steel F3 Rubin P7 FASIT OIL

C6 SAF 2205 Stainless Steel F4 Zapphire P8 EPDM ShA Rubber

D1 Polyvinylchloride (PVC) F5 Ceramic P9 STIROLUXreg 637

D2 Polypropylene (PP) F6 Silicon Carbide (SC) T1 Brass

D3 Polyamide (PA) G1 Cast Iron T3 Copper

D5 Powder Charged PP H1 Titanium T5 Bronze

D6 Fiberglass Charged PP L1 MONEL 400 T8 Nickel Plated Brass

D7 High Density Polyethylene L2 INCOLOYreg 825 V1 Aluminium

D8 Polyvinylidenefluoride (PVDF) L21 INCONELreg 600 V7 Aluminium ENP

STANDARD ORGANIZATION COUNTRY STANDARD CODE

AFNOR Association Franccedilaise de Normalisation France NF

AISI American Iron and Steel Institute USA AISI

ANSI American National Standards Institute USA ANSI

ASTM American Society for Testing and Materials USA ASTM

BSI British Standards Institution UK BS

DIN Deutsches Institut fuumlr Normung Germany DIN

DSIT Dansk StandardsInformation Technology Denmark DS

ISO International Organization for Standardization International ISO

JIS Japanese Institute for Standard Japan JIS

UNI Ente Nazionale di Unificazione Italy UNI

NOTEThe complete list of the Materials Codes may be requested to our Technical Service mentioning release code TGCE CODMAT

NOZZLE MATERIALS PNR material codes

35wwwpnr-nozzlescomCTG SH 07 EU

NOZ

ZLE

MAT

ERIA

LS

B1 AISI 303 STAINLESS STEEL

Chemical composition CR 1750 NI 850 S 025 Coding correspondence

Type Stainless Steel Austenitic AISI 303

Hardening Not possible BS 303 S 21

Annealing 1050 1100deg C in water DIN Wnr 14305

Welding Possible with precautions Euro X10CrNiS1809

Corrosion properties

Good resistance Atmospheric exposure food substances organic chemicalsLow resistance Chlorides reducing acids and over 800deg C

JIS SUS 303

NF Z6CN 18-09

SIS 2346

UNI XWCrNiS 1809

B3 AISI 316 STAINLESS STEEL

Chemical composition C 005 CR 170 NI 120 MO 225 Coding correspondence

Type Stainless Steel Austenitic AISI 316

Hardening Not possible BS 316 S 21

Annealing 1050 1100deg C in water DIN Wnr 14401

Welding Easy using same steel electrodes Euro X6CrNiMo17122

Corrosion properties

Good resistance Atmosphere great number of salts organic acids foodsLow resistance Solutions of reducing acids temperatures over 500deg C

JIS SUS 316

NF Z6CND 17-11

SIS 2347

UNI X5CrNiMo1712

B31 AISI 316L STAINLESS STEEL

Chemical composition C 003 CR 170 NI 130 MO 225 Coding correspondence

Type Stainless Steel Austenitic AISI 316 L

Hardening Not possible BS 316S12

Annealing 1050 1100deg C in water DIN Wnr 14404

Welding Easy using same steel electrodes Euro X3CrNiMo1810

Corrosion properties

Good resistance Atmosphere great number of salts organic acids foods salt waterLow resistance Solutions of reducing acids temperatures over 500deg C

JIS SUS 316L

NF Z2CND17-12

SIS 2348

UNI X2CrNiMo 1712

NOZZLE MATERIALS Properties of materials

36 wwwpnr-nozzlescom CTG SH 07 EU

C1 AISI 420 STAINLESS STEEL

Chemical composition C 020 CR 1300 Coding correspondence

Type Stainless Steel Martensitic AISI 420

Hardening 980deg - 1030deg C in oil BS 420 S 29

Annealing 750deg - 800deg C in air DIN Wnr 14021

Welding Possible with precautions Euro X20Cr13

Corrosion properties Good resistance Drinkable water steamgasoline oil alcohol ammonia

JIS SUS 420 J1

NF Z20C13

SIS 2303

UNI X20Cr13

C2 AISI 416 STAINLESS STEEL

Chemical composition C 012 CR 1250 S 022 Coding correspondence

Type Stainless Steel Martensitic AISI 416

Hardening 950deg - 1100deg C in oil BS 416 S 21

Annealing 750deg - 800deg C DIN Wnr ---

Welding Not possible Euro X120CrS13

Corrosion properties Good resistance Drinkable water steamgasoline oil alcohol ammonia

JIS SUS 416

NF Z12CF13

SIS ---

UNI X12CrS13

D8 POLYVINYLIDENE FLUORIDE (PVDF)

Description HIGH-MOLECULAR WEIGHT THE TOUGHEST OF THE FLUOROCARBON RESINS

Trade names amp SuppliersKYNAR (Atochem North America Inc formerly Penwalt Corporation)

SOLEF (Solvay Polymer Corporation)

Physical andMechanical Properties

Excellent resistance to abrasion and stress fatigue

Extremely pure opaque white resin

Thermal Properties UsefuI in temperatures ranging from -73 149degC (-100 300degF)Heat deflection temperature is (8090deg C at 182 Bars (176 194deg F at 264 psi)

Chemical Compatibility

Excellent chemical resistanceCan be used with wet or dry halogens most strong acids and bases aliphatics aromaticsalcohols and strong oxidizing agentsNot recommended for contact with ketones esters amines and some organic acids(fuming sulfuric acid)

NOZZLE MATERIALS Properties of materialsN

OZZL

E M

ATER

IALS

37wwwpnr-nozzlescomCTG SH 07 EU

E1 POLYTETRAFLUOROETHYLENE (PTFE)

Description FLUOROPLASTIC THAT HAVE SOME OR ALL OF THEIR HYDROGEN MOLECULESREPLACED BY FLUORINE

Trade names amp Suppliers

TEFLON TFE FEP and PFA (Dupont Polymer Products)

NEOFLON (Daikin)

FLUON (ICI Americas Inc)

SST-2SST-3 (Shamrock Technologies Inc)

Physical andMechanical Properties

Low coefficient

Low adhesiveness

Buona resistenza agli agenti atmosferici

Good weatherabilityLow resistance to creep and wear unless reinforced with glass figravebers which results in superior resistance

Thermal Properties High and low temperature stabilityHeat deflection temperatures range from 4855deg C at 182 bar (118-132deg F at 264 psi)

Chemical CompatibilityChemically inert

Totally insoluble

E3 ACETAL (ACETAL HOMOPOLYMERS AND COPOLYMERS)

Description HIGHLY CRYSTALLINE RESINS BASED ON FORMALDEHYDE POLYMERIZATION TECHNOLOGY

Trade names amp Suppliers

DELRIN (Dupont Polymer Products Corporation)

CELCON (Hoechst Celanese Corporation)

ULTRAFORM (BASF Corporation)

RTP 800 (RTP Corporation)

LUPITAL amp TENAL (Franklin Polymers Inc)

FULTRON 404 (ICI Americas Inc)

Physical andMechanical Properties

High tensile strength rigidity and esilience

High fatigue endurance

Excellent dimensional stability

Low coefficient of friction

Outstanding abrasion and wear resistance

Excellent creep resistance

Thermal Properties Heat deflection temperatures range from 110 -136deg C at 182 bars(230 - 270deg F at 264 psi) higher if glass figravelled

Chemical Compatibility

Remains stable in long-term high temperature water immersionExcellent resistance to chemicals and solvents but prolonged exposure to strong acids not recommendedNote Suitable for close-tolerance high-performance partsAvailable for machined parts or may be injection molded

NOZZLE MATERIALS Properties of materials

NOZ

ZLE

MAT

ERIA

LS

38 wwwpnr-nozzlescom CTG SH 07 EU

L6 HASTELLOY C4

PHYSICAL AND MECHANICAL PROPERTIES CHEMICAL COMPOSITION CORROSION RESISTANCE

R = 650800 Mpa C = 0015 max

Very good against pitting and tensile-corrosion specially in oxydizing atmosphereResistance in welded joints definitely better than C 276 lower than C22

Rp02 = 250470 Mpa Ni = 65

HRB = 90 Cr = 160

Mo = 155

W = --

Fe = 3 max

Ti = 05

Co = 2 max

APPLICATIONSRecommended for applications with strongly oxidizing atmosphere

L61 HASTELLOY C 22

PHYSICAL AND MECHANICAL PROPERTIES CHEMICAL COMPOSITION CORROSION RESISTANCE

R = 700800 Mpa C = 001 max

Excellent performances with oxydizing atmospheres as well as for pitting and tensile-corrosion conditionsVery good resistance in reducing atmospheres and for welded joints

Rp02 = 360420 Mpa Ni = 56

HRB = 93 Cr = 22

Mo = 13

W = 3

Fe = 3

Ti = --

Co = 25 max

APPLICATIONSChemical industry (gas ducts gas washing and treatment systems phosphoric acid production) Heat exchangers pumps chlorination reactors

L8 HASTELLOY C 276

PHYSICAL AND MECHANICAL PROPERTIES CHEMICAL COMPOSITION CORROSION RESISTANCE

R = 600800 Mpa C = 0015 max

Very good in reducing and oxydizing atmospheresVery good against pitting and tensile-corrosionAcceptable resistance in welded jointsIn cast parts excessive segregation not eliminated by thermal treatment of annealing makes it convenient to use C22 or C4 qualitieswhich assure better corrosion resistance and mechanical properties

Rp02 = 300370 Mpa Ni = 57

HRB = 90 Cr = 145165

Mo = 1517

W = frac345

Fe =

V = 035 max

Co = 25 max

APPLICATIONSChemical industry (air ducts scrubbers fans) Paper industry Thermoelectric plants Steel thermal treatments

NOZ

ZLE

MAT

ERIA

LSNOZZLE MATERIALS Properties of materials

39wwwpnr-nozzlescomCTG SH 07 EU

MATERIALTENSILE STRENGHT

CORROSION RESISTANCERp 02 R

20degC 800degC 20degC 800degC

(68degF) (1408degF) (68degC) (1408degC)

AISI 302 280 100 680 200

Good sensitive to corrosionbetween grains for slow heatingand cooling in the 450-900deg Crange temperature

AISI 303 280 100 680 200 Discrete

AISI 304304L 270 90 600 100Good especially for 304L304 sensitive to corrosionbetween grains like AISI 302

AISI 309 250 100 640 220 Good Sensitive to corrosion between grains like AISI 302

AISI 310 310 170 650 270Good (gt 304 - 304L)Sensitive to corrosionbetween grains like AISI 302

AISI 316316L 270 110 560 220 Very high especially for 316L

AISI 321 210 100 540 140 Good

AISI 347 280 120 620 200 Good

AISI 416 620 70 750 90

Good in medium corrosive ambient (atmosphere water gasoline alcohol N1-13 foods)Not in high corrosive

BRASS 110-150 --- 360-410 --- Good especially when nickel plated

BRONZE 100-300 --- 200-600 --- Discrete especially with sea water

CAST IRON le 500 V 100-800 V

NICKEL ALLOYS 100-1000 V 300-1300 VVery high also for high temperature To use in the temperaturerange 800-1200deg C

PLASTICS --- --- 20-200 ---

Good also for erosionGenerally they are attackedwith oxidizers like nitric acidhalogens ect

PTFE --- --- 30-40 ---

Very high except for elementarystate of alkaline metalsand to compounds containingfluorine at high temp

DUPLEX STEEL gtAISI 3 gtAISI 3 gtAISI 3 gtAISI 3 Very high also with high temperatureand also for pitting

TITANIUM alloy 195-850 V 300-900 VVery high in oxidizing ambientVery low in reducing ambient and with compounds containing fluorine

Legend Rp 02 = 02 YIELD STRENGHT [MPa]R = ULTIMATE TENSILE STRENGHT [MPa]V = To verify time by time

NOZZLE MATERIALS Mechanical properties of materials

NOZ

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73wwwpnr-nozzlescomCTG SH 07 EU

PIPI

NG

PIPINGPipes data 74Economic pipe sizes 75Pressure drop in clean steel pipes 76Flange dimensions 78Sieve size conversion chart 80

PIPING

74 wwwpnr-nozzlescom CTG SH 07 EU

The following table report the data of pipes according to ANSI B3619 that is one of the most used standards that regulate welded stainless steel pipes

DN NPS OD[mm]

SCHEDULE

5S 10S 40SSTD 80SXS

t m t m t m t m

[mm] [kgm] [mm] [kgm] [mm] [kgm] [mm] [kgm]

6 18 103 NA NA 124 028 173 037 241 048

8 14 137 NA NA 165 050 224 064 302 081

10 38 172 NA NA 165 064 231 086 320 112

15 12 213 165 081 211 101 277 128 373 164

20 34 267 165 103 211 130 287 171 391 223

25 1 334 165 131 277 212 338 254 455 328

32 1frac14 422 165 167 277 273 356 344 485 453

40 1frac12 483 165 192 277 315 368 411 508 549

50 2 603 165 242 277 399 391 551 554 759

65 2frac12 730 211 374 305 534 516 875 701 116

80 3 889 211 458 305 655 549 115 762 155

90 3frac12 1016 211 525 305 752 574 138 808 189

100 4 1143 211 592 305 849 602 163 856 226

125 5 1413 277 960 340 117 655 221 953 314

150 6 1683 277 115 340 140 711 287 1097 432

200 8 2191 277 150 376 202 818 431 1270 656

250 10 2730 340 229 419 282 927 611 1270 827

300 12 3239 396 317 457 365 953 749 1270 988

350 14 3556 396 348 478 419 NA NA NA NA

400 16 4064 419 421 478 480 NA NA NA NA

450 18 457 419 474 478 541 NA NA NA NA

500 20 508 478 602 554 696 NA NA NA NA

550 22 559 478 662 554 767 NA NA NA NA

600 24 610 554 837 635 959 NA NA NA NA

Where

DN = Nominal diameter NPD = Nominal Pipe Size OD = Outside Diameter t = Wall Thickness m = Specific WeightPIPI

NG

PIPING Pipes data

75wwwpnr-nozzlescomCTG SH 07 EU

The following Specific Pressure Drops (Y) are normally used in the good engineering practice(where Y=ΔPL ΔP Pressur Drop and L Pipe Lenght)

For pipe sizing the Velocity (V) is also usedIn the following table are shown the typical liquid velocities in steel pipes

Some fixed pressure drop values indicationsfor gate valves (fully open) consider a pressure drop of 5 metersbullfor normal bends consider a pressure drop of 5 metersbullfor a check valve consider a pressure drop of 15 metersbull

In the succeeding tables we show the velocity and specific pressure drop for several flow rates and pipe diameters

Not boiling waterY = 02divide05 bar100 m for pump discharge (07 bar100 m max if P gt 50 bar)

Y lt 0110 bar100 m for pump suction

Boiling water Y = 004divide005 bar100 m for pump suction (velocity = 03divide09 ms)

LIQUID LINE TYPE

Specific Pressure Dropsvs Velocity [ms]

0 lt V lt 2 3 lt V lt 10 10 lt V lt 20

NOT BOILING WATER

Pump suctionPump discharge (long)Discharge leads (short)Boiler feedDrainsSloped sewer

03 divide 0606 divide 0912 divide 2712 divide 2709 divide 12

-

06 divide 1209 divide 1515 divide 3715 divide 3709 divide 1509 divide 15

09 divide 1812 divide 2124 divide 4224 divide 42

-12 divide 21

HYDROCARBON LIQUIDS(normal viscosity)

Pump suctionDischarge heather (long)Discharge leads (short)Drains

05 divide 0808 divide 1112 divide 2709 divide 12

06 divide 1209 divide 1515 divide 3709 divide 15

09 divide 1812 divide 2124 divide 46

-

MEDIUM VISCOSITY OILPump suctionDischarge (short)Drains

--

03

05 divide 0901 divide 0209 divide 15

08 divide 1501 divide 0312 divide 18

OTHER WATERCooling tower Chilled waterSea water and generally foulingwater (long pipes) ()

06 divide 09 09 divide 15 12 divide 21

Note () In this case Cameron method has to be used with C=1 Y = 005 divide 012 bar100 m for principal manifold Y = 012 divide 023 bar100 m for secondary manifold

PIPI

NG

PIPING Economic pipe sizes

76 wwwpnr-nozzlescom CTG SH 07 EU

18rdquo 14rdquo

1 0350 0370 0200 0090 38rdquo 12rdquo

2 0705 1340 0395 0331 0223 0082 0145 0029 34rdquo

3 1060 2890 0593 0673 0333 0176 0217 0061 0125 0016 1rdquo

4 1410 4940 0788 1150 0444 0291 0290 0101 0167 0027 0110 0010

5 1760 7460 0985 1750 0556 0424 0362 0149 0209 0040 0137 0014

6 1180 2460 0667 0594 0434 0207 0251 0054 0165 0019 114rdquo

8 1580 4060 0892 1020 0579 0351 0335 0091 0219 0033 0126 0009 112rdquo

10 1110 1530 0724 0534 0418 0136 0274 0049 0158 0012 0116 0006

15 1670 3250 1090 1130 0627 0284 0411 0099 0236 0026 0174 0012

20 2rdquo 2230 5600 1450 1900 0836 0481 0549 0168 0315 0043 0233 0021

30 0212 0013 212rdquo 2170 4130 1250 1020 0823 0353 0473 0092 0348 0043

40 0283 0022 0190 0007 2900 7180 1670 1760 1100 0606 0631 0155 0465 0073

50 0354 0032 0237 0012 2090 2700 1370 0911 0789 0233 0581 0108

60 0424 0044 0284 0017 2510 3810 1650 1290 0943 0321 0697 0150

70 0495 0079 0332 0022 3rdquo 2930 5120 1920 1720 111 0434 0814 0199

80 0566 0074 0379 0028 0248 0010 312rdquo 2190 2210 126 0554 0925 0253

90 0636 0093 0427 0035 0279 0013 0209 0006 2470 2770 142 0692 1040 0319

100 0707 0114 0474 0043 0310 0015 0232 0007 4rdquo 2740 3400 158 0843 1160 0392

150 1060 0238 0711 0090 0464 0031 0349 0016 0272 0008 4110 7440 236 181 1740 0828

200 1410 0414 0948 0153 0619 0053 0466 0027 0362 0014 315 314 2330 1450

250 1760 0625 1190 0233 0774 0080 0581 0040 0453 0021 5rdquo 2900 2200

300 2120 0889 1420 0324 0930 0112 0698 0055 0543 0030 0352 0011 3480 3070

350 2470 1190 1660 0438 1080 0150 0815 0074 0634 0040 0411 0014 6rdquo 4070 4160

400 2830 1550 1900 0563 1240 0195 0935 0096 0724 0051 0469 0018 0341 0007 4650 5380

450 3180 1930 2130 0707 1390 0242 1050 0120 0815 0063 0528 0022 0366 0009 5230 6790

500 3540 2380 2370 0867 1550 0298 1170 0147 0902 0076 0587 0027 0407 0011

550 3880 2870 2610 1040 1700 0354 1280 0174 0991 0092 0645 0032 0447 0013

600 4240 3390 2840 1220 1860 0418 1400 0204 1090 0110 0704 0037 0488 0015

650 4590 5560 3080 1420 2010 0486 1510 0239 1180 0127 0762 0043 0529 0017

700 4950 4550 3320 1650 2170 0560 1630 0275 1270 0146 0821 0050 0569 0020

750 5300 5200 3560 1880 2320 0637 1750 0314 1360 0164 0879 0057 0610 0023

800 3790 2130 2480 0721 1860 0354 1450 0185 0936 0064 0651 0025 8rdquo

850 4030 2390 2630 0805 1980 0395 1540 0209 1000 0072 0692 0028 0403 0007

900 2790 0901 2090 0438 1630 0232 1050 0008 0732 0032 0427 0008

950 2940 1000 2210 0486 1720 0258 1120 0087 0773 0036 0451 0010

1000 3100 1110 2320 0534 1810 0284 1170 0096 0814 0039 0474 0011

1100 3410 1290 2560 0643 1990 0341 1290 0116 0895 0047 0522 0012

1200 3720 1 580 2800 0763 2170 0403 1410 0135 0974 0055 0569 0015

1300 3030 0890 2360 0473 1530 0157 1060 0063 0616 0017

1400 3260 1020 2540 0544 1640 0183 1140 0072 0664 0019

1500 3490 1170 2720 0617 176 0208 1220 0083 0712 0022

1600 3720 1330 2890 0697 1880 0234 1300 0093 0758 0025

1700 10rdquo 3950 1490 3080 0784 1990 0260 1380 0104 0806 0028

1800 0546 0010 3260 0875 2110 0290 1470 0116 0854 0032

1900 0575 0012 3440 0965 2230 0323 1550 0129 0901 0034

2000 0606 0012 3617 1060 2340 0356 1630 0143 0946 0037

2200 0667 0015 3980 1280 2580 0429 1790 0172 1050 0045

2400 0727 0017 12rdquo 2820 0507 1950 0200 1140 0053

2600 0788 0021 0563 0009 3050 0589 2110 0234 1230 0061

2800 0848 0023 0606 0010 14rdquo 3280 0676 2280 0268 1330 0070

3000 0909 0026 0649 0011 0532 0007 3520 0773 2440 0306 1420 0080

3500 1060 0035 0760 0015 0620 0009 4110 105 2850 0416 1660 0108

4000 1210 0045 0866 0020 0709 0012 16rdquo 4690 135 3250 0532 1900 0139

4500 1360 0056 0976 0025 0798 0015 0606 0007 3660 0674 2130 0173

5000 1520 0069 1080 0029 0886 0018 0674 0009 4070 0822 2370 0212

6000 1810 0097 1290 0042 1070 0026 0808 0013 18rdquo 4880 1160 2850 0301

7000 2120 0130 1510 0055 1240 0035 0940 0017 0741 0010 5690 1580 3310 0403

8000 2420 0168 1730 0072 1420 0045 1080 0022 0847 0012 6510 2050 3790 0525

9000 2730 0210 1950 0091 1600 0056 1210 0027 0954 0015 4270 0659

10000 3030 0257 2170 0111 1770 0067 1350 0033 1050 0019 4740 0801

Legend Q Water Flow Rate (Lpm) V Velocity (ms) Y Specific Pressure Drops (bar100m)Water at ambient temperature in straight pipe

SPECIfIC PRESSURE DROPS fOR WATER fLOW IN CLEAN STEEL PIPE SCH 10S

Q V Y V Y V Y V Y V Y V Y V Y V Y [lm] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m]

PIPI

NG

77wwwpnr-nozzlescomCTG SH 07 EU

SPECIfIC PRESSURE DROPS fOR WATER fLOW IN CLEAN STEEL PIPE SCH 40S

Legend Q Water Flow Rate (Lpm) V Velocity (ms) Y Specific Pressure Drops (bar100m)Water at ambient temperature in straight pipe

18rdquo 14rdquo

1 0458 0726 0251 0170 38rdquo 12rdquo

2 0918 2590 0501 0600 0272 0136 0170 0044 34rdquo

3 1380 5590 0752 1220 0407 029 0255 0091 0144 0023 1rdquo

4 1840 9570 1000 2090 0543 048 0340 0151 0192 0038 0120 0012

5 2290 14450 1250 3180 0679 070 0425 0223 0241 0057 0150 0017

6 1500 4460 0815 0980 0510 0309 0289 0077 0180 0024 114rdquo

8 2010 7360 1090 1690 0680 0524 0385 0129 0240 0041 0138 0011 112rdquo

10 1360 2520 0850 0798 0481 0193 0300 0061 0172 0015 0127 0008

15 2040 5370 1280 1690 0722 0403 0450 0124 0258 0032 019 0015

20 2rdquo 2720 9240 1700 2840 0962 0683 0600 0210 0344 0054 0254 0026

30 0231 0016 212rdquo 2550 6170 1440 1450 0900 0442 0517 0114 038 0053

40 0308 0027 0216 0010 3400 10720 1920 2500 1200 0758 0689 0193 0507 0091

50 0385 0039 0270 0017 2410 3830 1500 1140 0861 029 0634 0135

60 0462 0055 0324 0023 2890 5410 1800 1610 103 0400 0761 0187

70 0539 0098 0378 0031 3rdquo 3370 7270 2100 2150 1210 0541 0888 0248

80 0616 0092 0432 0039 028 0014 312rdquo 2400 2760 1380 0690 1010 0315

90 0693 0115 0486 0048 0315 0017 0235 0008 2700 3470 1550 0862 1140 0397

100 0770 0141 0540 0059 035 002 0261 0010 4rdquo 3000 4250 1720 1050 1270 0488

150 1150 0295 0810 0125 0524 0042 0392 0021 0304 0011 4500 9300 2580 2260 1900 1030

200 1540 0512 1080 0212 0699 0072 0523 0036 0405 0019 3440 3910 2540 1810

250 1920 0773 1350 0322 0874 0108 0653 0053 0507 0028 5rdquo 3170 2740

300 2310 1100 1620 0449 105 0152 0784 0074 0608 004 0387 0014 3800 3820

350 2690 1470 1890 0606 122 0203 0915 0099 0710 0053 0452 0018 6rdquo 4440 5180

400 3080 1920 2160 0780 14 0264 1050 0128 0811 0068 0516 0023 0375 0009 5070 6690

450 3460 2390 2430 0979 157 0328 1180 0161 0912 0084 0581 0028 0402 0012 5710 8450

500 3850 2950 2700 1200 175 0403 1310 0196 1010 0101 0646 0034 0447 0014

550 4230 3550 2970 1440 192 0479 1440 0232 1110 0122 0710 0041 0491 0016

600 4620 4200 3240 1690 2100 0566 1570 0273 1220 0146 0775 0047 0536 0019

650 5000 6880 3510 1970 2270 0658 1700 0319 1320 0169 0839 0055 0581 0022

700 5390 5630 3780 2280 2450 0759 1830 0368 1420 0194 0904 0063 0625 0025

750 577 6440 4050 2600 2620 0863 1960 042 1520 0218 0968 0072 067 0029

800 4320 2950 2800 0977 2090 0473 1620 0246 1030 0081 0715 0032 8rdquo

850 4590 3310 2970 1090 2220 0528 1720 0277 1100 0091 076 0036 0439 0009

900 3150 1220 2350 0585 1820 0308 1160 0100 0804 0041 0465 001

950 3320 1350 248 0649 1930 0342 1230 0111 0849 0045 0491 0012

1000 3500 1500 261 0714 2030 0377 1290 0122 0894 0049 0516 0013

1100 3850 1750 2870 0860 2230 0452 1420 0147 0983 0059 0568 0015

1200 4200 2140 3140 1020 2430 0534 1550 0172 1070 0069 0620 0018

1300 3400 1190 2640 0627 1680 0200 1160 008 0671 0021

1400 3660 1370 2840 0722 1810 0232 1250 0091 0723 0024

1500 3920 1560 3040 0818 1940 0264 1340 0105 0775 0027

1600 4180 1780 3240 0924 2070 0297 1430 0118 0826 0031

1700 10rdquo 4440 1990 3450 1040 2190 0331 1520 0132 0878 0035

1800 0590 0012 3650 1160 2320 0369 1610 0147 0930 0039

1900 0622 0014 3850 1280 2450 041 1700 0163 0981 0042

2000 0655 0015 40500 1410 2580 0452 1790 0181 1030 0046

2200 0721 0018 4460 1700 2840 0545 1970 0217 1140 0056

2400 0786 0021 12rdquo 3100 0645 2140 0253 1240 0065

2600 0852 0025 0600 001 3360 0749 2320 0296 1340 0076

2800 0917 0028 0646 0012 14rdquo 3610 0859 2500 0339 1450 0087

3000 0983 0032 0692 0013 0573 0008 3870 0982 268 0387 1550 0099

3500 1150 0043 0810 0018 0668 0011 4520 1330 3130 0526 1810 0134

4000 1310 0055 0923 0023 0764 0014 16rdquo 5160 1720 3570 0673 2070 0172

4500 1470 0068 1040 0029 0860 0018 0658 0009 4020 0853 2320 0214

5000 1640 0084 1150 0034 0955 0022 0731 0011 4470 1040 2580 0262

6000 1960 0118 1380 0049 1150 0031 0877 0016 18rdquo 5360 1470 3100 0373

7000 2290 0158 1610 0065 1340 0042 1020 0021 0808 0012 6250 2000 3610 0499

8000 2620 0204 1840 0085 1530 0054 1170 0027 0924 0015 7150 2590 4130 065

9000 2950 0256 2080 0107 1720 0067 1310 0033 1040 0019 4650 0816

10000 3280 0313 2310 0130 1910 0081 1460 0041 1150 0023 5160 0992

Q V Y V P V Y V Y V Y V Y V Y V Y [lm] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m]

PIPI

NG

78 wwwpnr-nozzlescom CTG SH 07 EU

10 75 12 038 4 11 50

15 80 12 044 4 11 55

20 90 14 065 4 11 65

25 100 14 082 4 11 75

32 120 14 117 4 14 90

40 130 14 139 4 14 100

50 140 14 162 4 14 110

65 160 14 214 4 14 130

80 190 16 343 4 18 150

100 210 16 422 4 18 170

125 240 18 611 8 18 200

150 265 18 751 8 18 225

175 295 20 1020 8 18 255

200 320 20 1230 8 18 280

250 375 22 1850 12 18 335

300 440 22 2550 12 22 395

350 490 22 3180 12 22 445

400 540 22 3850 16 22 495

450 595 22 4700 16 22 550

500 645 24 6040 20 22 600

PN 6 (UNI 6091)

ND 6 (DIN 2527) DN Flange Holes

D t W N Oslash a

90 14 063 4 14 60

95 14 071 4 14 65

105 16 101 4 14 75

115 16 122 4 14 85

140 16 180 4 18 100

150 16 209 4 18 110

165 18 287 4 18 125

185 18 365 4 18 145

200 20 461 8 18 160

220 20 565 8 18 180

250 22 812 8 18 210

285 22 1050 8 22 240

315 24 1410 8 22 270

340 24 1620 12 22 295

405 28 2510 12 25 355

460 28 3520 12 25 410

520 30 4820 16 25 470

580 32 6350 16 30 525

640 32 7720 20 30 585

715 34 1020 20 33 650

PN 16 (UNI 6093)

ND 16 (DIN 2527) Dimensions Holes

D t W N Oslash a

ND 10 (DIN 2527) Dimensions Holes

D t W N Oslash a

90 14 063 4 14 60

95 14 071 4 14 65

105 16 101 4 14 75

115 16 122 4 14 85

140 16 180 4 18 100

150 16 209 4 18 110

165 18 287 4 18 125

185 18 365 4 18 145

200 20 461 4 18 160

220 20 565 8 18 180

250 22 812 8 18 210

285 22 1050 8 22 240

315 24 1410 8 22 270

340 24 1650 8 22 295

395 26 2410 12 22 350

445 26 3080 12 22 400

505 26 3960 16 22 460

565 26 4960 16 25 515

615 26 5860 20 25 565

670 28 7530 20 25 620

PN 10 (UNI 6092)

LegendaDN Nominal DiameterD Flange External Diametert Flange ThicknessW Flange WeightN Hole NumberOslash Hole Diametera Hole axis

PIPING Flange dimensionsPI

PIN

G

Blind flanges to DIN 2527

79wwwpnr-nozzlescomCTG SH 07 EU

LegendDN Nominal DiameterD Flange External Diametert Flange ThicknessW Flange WeightN Hole NumberOslash Hole Diametera Hole axis

12rsquorsquo 889 111 08 4 159 603

34rsquorsquo 984 127 09 6 159 698

1rsquorsquo 1079 143 10 4 159 794

114rsquorsquo 1175 159 13 4 159 889

112rsquorsquo 1270 175 14 4 159 984

2rsquorsquo 1524 190 18 4 190 1206

212rsquorsquo 1778 222 32 4 190 1397

3rsquorsquo 1905 238 41 4 190 1524

312rsquorsquo 2159 238 59 8 190 1778

4rsquorsquo 2286 238 77 8 190 1905

5rsquorsquo 2540 238 91 8 222 2159

6rsquorsquo 2794 254 118 8 222 2413

8rsquorsquo 3429 286 204 8 222 2984

10rsquorsquo 4064 302 318 12 254 3619

12rsquorsquo 4826 317 500 12 254 4318

14rsquorsquo 5334 349 600 12 286 4762

16rsquorsquo 5969 365 770 16 286 5397

18rsquorsquo 6350 397 950 16 317 5778

20rsquorsquo 6985 429 1230 20 317 6350

22rsquorsquo 7493 460 1510 20 349 6921

ANSI 150 lb DN Flange Holes

D t W N Oslash a

952 143 10 4 159 667

1175 159 14 4 190 825

1238 175 18 4 190 889

1333 206 27 4 190 984

1556 222 36 4 222 1143

1651 254 45 8 190 1270

190S 286 68 8 222 1492

209S 317 91 8 222 1683

2286 349 132 8 254 1841

2540 349 150 8 254 2000

2794 381 200 8 254 2349

3175 413 277 12 254 2699

3810 476 450 12 286 3302

4445 540 700 16 317 3873

5207 571 103 16 349 4508

5842 603 141 20 349 5143

6477 635 181 20 381 5715

7112 667 228 24 381 6286

7747 698 282 24 413 6858

8382 730 311 24 444 7429

ANSI 400 lb Dimensions Holes

D t W N Oslash a

ANSI 300 lb Dimensions Holes

D t W N Oslash a

952 143 10 4 159 667

1175 159 14 4 190 825

1238 175 18 4 190 889

1333 190 27 4 190 984

1556 206 32 4 220 1143

1651 222 36 8 190 1270

1905 254 54 8 222 1492

2095 286 73 8 222 1683

2286 302 95 8 222 1841

2540 317 122 8 222 2000

2794 349 159 8 222 2349

3175 365 227 12 222 2699

3810 413 370 12 254 3302

4445 476 580 16 286 3873

5207 508 840 16 317 4508

5842 540 1070 20 317 5143

6477 571 1390 20 349 5715

7112 603 3900 24 349 6286

7747 635 2230 24 349 6858

8382 667 2700 24 413 7429

PIPING Flange dimensions

PIPI

NG

flanges to ANSI norms

80 wwwpnr-nozzlescom CTG SH 07 EU

PIPI

NG

Sieves are used both for determining the particle size distribution of a granular material and to filter solid particles in a liquid Normally the sieve is made with a fabric whose characteristic dimensions areL is the Opening Width (free passage)D is the Diameter of the wireP is the Pitch of the wireS is the Thickness of the fabricTo classify particle sizes there is some Sieve Series according to specific standardsthe most known are Tyler Sieve Series US Sieve Series UK Sieve SerieshellipThe Tyler mesh size indicates exactly the number of openings per linear inch of mesh

L[microm]

TYLER Sieve[Mesh No]

ASTM E11 Sieve[Mesh No]

BS 410 Sieve[Mesh No]

DIN 4188 Sieve[mm]

5 2500 2500 0005

10 1250 1250 0010

15 800 800 0015

20 625 635 625 0020

22 0022

25 500 500 500 0025

28 0028

32 na 450 440 0032

36 0036

38 400 400 400

40 0040

45 325 325 350 0045

50 0050

53 270 270 300

56 0056

63 250 230 240 0063

71 0071

75 200 200 200

80 0080

90 170 170 170 0090

100 0100

106 150 140 150

112 0112

125 115 120 120 0125

140 0140

150 100 100 100

160 0160

180 80 80 85 0180

200 0200

In the german standard (DIN norm 4188) the Opening Width (L) is given in millimeters

PIPING Sieve size conversion chartPI

PIN

G

81wwwpnr-nozzlescomCTG SH 07 EU

L[microm]

TYLER Sieve[Mesh No]

ASTM E11 Sieve[Mesh No]

BS 410 Sieve[Mesh No]

DIN 4188 Sieve[mm]

212 65 70 72

250 60 60 60 0250

280 0280

300 48 50 52

315 0315

355 42 45 44 0355

400 0400

425 35 40 36

450 0450

500 32 35 30 0500

560 0560

600 28 30 25

630 0630

710 24 25 22 0710

800 0800

850 20 20 18

900 0900

1000 16 18 16 1000

1120 1120

1180 14 16 14

1250 1250

1400 12 14 12 1400

1600 1600

1700 10 12 10

1800 1800

2000 9 10 8 2000

2240 2240

2360 8 8 7

2500 2500

2800 7 7 6 2800

3150 3150

3350 6 6 5

3550 3550

4000 5 5 4 4000

4500 4500

4750 4 4 35

5000 5000

5600 35 35 3

6700 3 0265 in 1

8000 25 516 in na

Applicable standards areISO 565 (1987) ISO 3310 (1999) ASTM E 11-70 (1995)DIN 4188 (1977) BS 410 (1986) AFNOR NFX11-501 (1987)

Legend Q Water Flow Rate V Velocity P Pressure drop Pressure drop in bar per 100 meters of straight pipe (water at ambient temperature)

PIPING Sieve size conversion chart

PIPI

NG

Besides its main range of nozzles for industrial applications PNR manufactures a wide range of complementary products and systems to optimize the use of spray jets and fluids control in most of the modern industrial processes

PNR PRODUCT RANGE

CTG AC

CTG LS

CTG UG

CTG AZ

Complementary Products andAssembly FittingsA complete line of nipples clamps swivel joints and everything that helps you to assemble align and service your spraying systems quickly and easilyAir blowers mixing eductors filters clean-ing guns and lances hose reels steam heaters pressure tanks quick couplings to help you build up a professional system upgraded to the latest standards

Tank washing systemsA complete range from simple fixed washing heads to the two-axis heads from mushroom nozzles to fluid driven reaction heads up to the motor driven washing heads equipped with a pneu-matic or electric motorAll for the inside cleaning of industrial tanks according to the latest technology accessories included

Spray nozzles for industrial applicationsOne of the world most complete lines of nozzles for numberless industrial appli-cations Nozzles with a wide openings range various types of vanes several spray patterns anti-clog design available in small and big dimensions and made in many food-grade materials like PFTE and Stainless Steel 316L with threaded and flanged connections

Air assisted atomizersUltrasonic classic and automatic atomiz-ers for the finest atomization in any insus-trial process High quality machining and strict quality control ensure your systems top professional resultsProgramming and control panels for an easy assembly of complete humidification systems

CTG SP

CTG PM

CTG SW

CTG LN

Spraydry nozzlesAir assisted or hydraulic high pressure ato-mizers made in high-quality metal alloys or tungsten carbideA complete line of nozzles for the moder-nization of existing facilities at competitive prices To ensure highly accurate results and a long service life these nozzles are manufactured with the finest materials and technologically advanced machines

Paper mill productsA line of products specifically designed for perfect results on paper mill machines including disc nozzles patented for self-cleaning filters flat jet nozzles with orifices in sapphire ruby and ceramic oscillating tubes equipped with a computer driven motor

Steelwork nozzlesA complete line of nozzles for steelwork applications including continuous casting air atomizers and conventional nozzles descaling nozzles for high pressure sys-tems dovetail tips for cylinders cooling and high capacity flanged nozzles for coke quenching

Gas cooling lancesSpillback or air assited lances for gas coo-ling in steelworks cement plants and other industrial applicationsWe can supply spare parts upgrade your plant and even supply a complete PLC driven system to enhance the towers per-formances to the highest efficiency level allowed by today technology

wwwpnr-nozzlescomCTG SH 07 EU

CTG SH 07 EUwwwpnr-nozzlescom

STAM

PATO

IN E

U 09

09

copy B

ellamp

Tany

Our products are distributed through

We are also represented in

PNR AmericaPNR Asia

PNR BalticPNR Benelux

PNR ChinaPNR Czech Republic

PNR DeutschlandPNR France

PNR ItaliaPNR Mexico

PNR UK

ArgentinaAustraliaAustriaBrazil

BulgariaCanada

ChileCroatia

DenmarkFinlandGreece

IndiaIndonesia

IranIrelandKorea

MalaysiaNorway

New ZealandPakistan

PhilippinesPoland

Portugal

RumeniaRussiaSerbia

SingaporeSlovenja

SpainSouth Africa

SwedenTaiwanTurkey

Venezuela

Page 23: SPRAY CTG SH 07 EU ENGINEERING HANDBOOK

23wwwpnr-nozzlescomCTG SH 07 EU

Terms and definitions

A very important characteristic of a spray nozzle is a parameter called Spray Distribution which gives a precise information about how evenly the drops of the spray are distributed onto the area covered by the sprayIt is self understood that normally it is preferable to obtain the most even distribution possibleIn the past this was done through the visual examination of a diagram reporting the quantity of water contained for example in glass pipes aligned onto the spray coverage areaPnr has determined to obtain such a result in a scientific way through high technology instrumentation as shown in the pictures below showing one of our patternators and a typical distribution diagram

Now to the spray geometry and some definition letrsquos consider a nozzle with a capa-city Q at the pressure PAt every value for distance H which we call height of spray we can define a plane lsquonrsquo normal to the nozzle axis on which a line can define the intersection of the spray onto the planeThe area covered by the spray on the plane lsquonrsquo has a surface S depending from the following parametersa) Spray pattern Fb) Opening angle of the spray αc) Height of the spray H

We can then write S=S( F α H )

In case of a full cone nozzle S is a circle with diameter C and S = 0785 C2

The capacity of the nozzle flows through the surface S but each smaller area inside the surface S will probably have a different value for the flow passing through itWe introduce then the value of Specific Capacity q

1) Specific Capacity

The function q depends upon the single point (xy) in the section S and then

Determining the function q is however very expensive therefore in practice two different functions are used which give in most occurrences sufficient information

2) Linear Distribution

3) Angular distribution

part Qpart x

qx =

Diagram 1

q = limΔS 0

ΔQΔS

q = = f (x y H)part Qpart S

part Qpart φ

qφ =

ΔQ is the liquid flowing through a surface ΔSwhere ΔS is a fraction of the surface S

x and y are the local coordinates in the section planewhere H is the distance of the test surface from the nozzle orifice

partQ is the variation in capacitywhere partx is the variation of a generic linear coordinate

partQ is the variation in capacitywhere partφ is the variation of a generic angular coordinate

LIQU

ID S

PRAY

AND

SPRA

Y NO

ZZLE

S

LIQUID SPRAY AND SPRAY NOZZLES Spray Distribution

24 wwwpnr-nozzlescom CTG SH 07 EU

LIQUID SPRAY AND SPRAY NOZZLES Spray Distribution

Values extracted from these functions can characterize the spray and allow for drawing the diagrams defined as Distribution Curves

Analyzing the above curves it is possible to determine the type of water distribution along the spray coverage and the type of spray pattern like for example a full cone hollow cone flat or straight jet spray

Distribution measurement

The water distribution along the spray coverage is determined by means of an instrument called Patternator

A patternator consists of the following parts 1) Liquid collector2) Cell block3) Measure block4) Unloading block

The nozzle is above the instrument and it is orienta-ted in such a way the jet is collected into the upper liquid collectorThe liquid collector can be linear ( diagram 5 ) or round ( diagram 6 ) according to the test being runFrom the single parts in the collector the liquid is sent into the corresponding cells below (2)

The Measure block (3) determines the liquid content in each single cell then the unloading block (4) empties the instrument sending the liquid to the collection drain

There are two types of patternators

Analogic1 the different levels of liquid is visible through the transparent walls of the cells or pipes sometimes containing some kind of floating balls and a picture can be taken with a cameraDigital2 Delivering an automatic reading of the values in the cells the values being supplied as an electronic file from which a distribution curve can be easily obtained

Diagram 2 Linear distribution Diagram 3 Angular distribution

Diagram 4

Diagram 6 Circular collectorDiagram 5 Linear collector

LIQU

ID S

PRAY

AND

SPRA

Y NO

ZZLE

S

25wwwpnr-nozzlescomCTG SH 07 EU

LIQUID SPRAY AND SPRAY NOZZLES Spray Distribution

Normalizing distribution curve

The values obtained from the cells of the patternator showing the water quantity collected in the single cells allow for preparing a Distribution curve which can be given as a single line curve or as a row of vertical barsThese resemble the liquid level collected into the glass pipes of the old type instrumentation

The curves prepared based on the liquid level in the single cells still are not precise they depend in fact from the testing time the longer this time the larger the liquid quantity sprayedTo eliminate the influence of time from the test it is necessary to transform the effective curves to normalized curves

Normalized4) linear distribution

Normalized5) angular distribution

Please note that Maximum value is the one belonging to the series of values measured in the cellsIn addition to the distribution it is possible to normalize the intervals to with the following formulas

Normalized 6) linear interval

Normalized 7) angular interval

The linear normalized amplitude is defined inside an interval [-1 +1]The angular normalized amplitude is defined inside an interval [0+2π]

Diagram 7 Effective linear distribution curve Diagram 8 Effective angular distribution curve

Mx

xx q

q=δ

N

πθ

2=Δ

Diagram 9 Normalized linear distribution curve Diagram 10 Normalized angular distribution curve

qx is the linear distribution of a generic cellwhere qx

M is the maximum linear distribution measured

qφ is the linear distribution of a generic cellwhere qφ

M is the maximum linear distribution measured

2 is the normalized linear amplitude of the spraywhere N is the number of active cells (active cells = cells containing liquid)

2π is the normalized angular amplitude of the spraywhere N is the number of active cells (active cells = cells containing liquid)

Mq

q

ϕ

ϕϕδ =φ

φ

φ

2

N=Δλ

2

N=Δλ

LIQU

ID S

PRAY

AND

SPRA

Y NO

ZZLE

S

26 wwwpnr-nozzlescom CTG SH 07 EU

Evaluation of spray distribution

To evaluate distribution curves it is necessary to take three properties into consideration

a) UNIFORMITY b) MONOTONY c) SIMMETRY

As described in the following diagrams and definitions

a) UNIFORM A distribution that minimizes the ratio AAdeg

b) MONOTONE Is a distribution with a curve which grows on the left side and decreases on the left side c) SYMMETRIC Is a distribution which minimizes the Ratio A+A-

Based on the above definitions the following curves show the ideal situations

The three properties are then evaluated by means of the following parameters

1 Integral uniformity

2 Incremental uniformity

3 Symmetry index

Complete details about the above formulas and definition can be found in our Technical Bulletin REL 080002 which shall be released from our Technical Department on request

Diagram 12Normalized and monotone distribution

Diagram 11Normalized and monotone distribution

Diagram 14Ideal monotony

Diagram 15Ideal symmetry

Diagram 13Ideal uniformity

1001 sdot=MA

AU

1002

2 sdot=lowastσ

U

1001

sdot⎥⎦

⎤⎢⎣

sdotminus=

lowast

lowast

δ

ε

NI S

sum minus=lowast

M

i iδδε

A is the area included in the normalized curvewhere Adeg is the rest of the area included in the 2x1 rectangle

Left side is the area -1 0where Right side is the area 0 +1

A+ is the area included below the curve on the right sidewhere A- is the area included below the curve on the left side

where

where δrsquo is the value of normalized liquid content in the symmetric cell N number of cells containing liquid in half of the diagram

lowast

lowast sum=

N

N

i i

δ

δ N Number of cells containing liquid

A area included below the curve AM area included below the ideal curvewhere

sum minus= +lowast

1

N

i ii δδσ

N Number of cells containing liquid

LIQU

ID S

PRAY

AND

SPRA

Y NO

ZZLE

SLIQUID SPRAY AND SPRAY NOZZLES Spray Distribution

27wwwpnr-nozzlescomCTG SH 07 EU

Liquids are characterized for their property of undergoing continuous deformation when subjected to shear stress The property of fluids (liquids or gases) to resist flowing due to the existence of internal friction within the fluid is called visco-sity

Thus if we imagine the different layers of fluid sliding one over the other with friction we can imagine that viscosity is defined the force required to move a unit area of fluid for a unit distance Viscosity is measured with many different systems among which the most used are the following

The following table shows correspondences between the most used viscosity units

The viscosity value of a liquid depends upon the temperature therefore the viscosity value must always be given with reference to a temperature value The viscosity of water (20deg C) is 1 Centipoise and 1 Centistoke since water mass density = 1

KINEMATIC SAYBOLT SAYBOLT ENGLER VISCOSITY UNIVERSAL FUROL

Centistoke Sq feetsec SSU SSF Degrees

100 000001076 310 --- 100

500 000005382 424 --- 137

1000 00001076 588 --- 183

1566 00001686 80 --- 245

2052 00002209 100 --- 302

2515 00002707 120 --- 357

4295 00004623 200 --- 592

1080 0001163 500 523 1460

1510 0001625 700 720 2044

1942 0002090 900 921 2628

3023 0003254 1400 143 4090

3885 0004182 1800 183 5260

5394 0005806 2500 254 7300

10788 001161 5000 509 146

15103 001626 7000 712 204

19419 002092 9000 916 263

32365 003483 15000 1526 438

METHOD UNIT DIMENSIONS NOTES

1 Dynamic viscosity(Absolute viscosity) Poise ML T-1 Poise = 100 Centipoises = (1 dyne per seccm2)

2 Kinematic viscosity Stoke L2 T-1 1 Stoke = 100 Centistoke = (cm2sec)Kinematic viscosity = Dynamic viscositydensity

3 SSUSSF

One of the most widely instruments to determine is the Saybolt viscosimeter which measures the time in seconds required for a fixed volume of a given liquid to flow through an orificeSSU = Seconds Saybolt Universal relates to a smaller orifice for less viscous liquidsSSF = Seconds Saybolt Furol relates to a larger orifice for more viscous liquids

LIQUID SPRAY AND SPRAY NOZZLES Influence of liquid viscosity

LIQU

ID S

PRAY

AND

SPRA

Y NO

ZZLE

S

28 wwwpnr-nozzlescom CTG SH 07 EU

Viscosity influence on nozzle flow rate

AlI nozzle Catalogue data refer to spraying water (water cinematic viscosity is equal to 1 Centistoke)A liquid with viscosity higher than water will require more energy to be pumped and sprayed and will flow with lower velocity at the same pressure and this will cause a reduction in the turbulence of the flow For the above reason nozzles working on the turbulence principle like normal full cone nozzles and whirl hollow cone nozzles will show an increase in capacity while spraying liquids with viscosity higher than water This increase is very consistent for small size nozzles where the small radius of the whirl chamber tends to cause high turbu-lence in the flow and tends to diminish and to disappear for nominal capacity valves (capacity values at 3 bar) larger than 15 liters per minute

The graph below shows for a liquid with a viscosity of about 4 Centistokes typical variations in the nozzle flow rate value for different values of the nozzle whirl chamber diameter As it may be seen these variations can be neglected in most practical applications where nozzles with whirl chamber diameters well over 3 mm are used

For other types of nozzles not working on the turbulence principle the increase on viscosity will simply reduce the liquid exit velocity at the orifice thus causing a decrease in capacity Experience shows that this decrease ranges between 3 and 6 of nominal water capacity that is to say that the variation introduced is in the same order of magnitude as the nozzle flow rate toler-ance

Viscosity influence on nozzle spray angle and spray pattern

With reference to the theory of jet break-up and droplet information it can be easily imagined that spraying a liquid more viscous than water is a difficult task

Al the properties of the spray tend to worsen therefore one can expectA higher value for the minimum operating pressure that is the pressure value which allows for obtaining a well defined 1 spray with the expected spray angle A worse spray distribution since the viscous behavior of the liquid makes it more difficult to pro-duce fine droplets and 2 to distribute them evenly with the desired spray pattern A narrower spray angle It is difficult to give guidelines since results on different nozzles at different pressures and with 3 different liquids are scarcely predictableHowever our experience shows that in many cases the use of impact nozzles can give acceptable results where all other type of nozzle failsA laboratory test or a field test are stili the safest way to obtain sound results

50

45

40

35

30

25

20

15

10

5

0 2 3 4 5 6 7 8 9

Increase Flow rate vs Whirl Chamber Diameter

Incr

ease

Flo

w R

ate

[mm

]

Whirl Chamber Diameter [mm]

LIQUID SPRAY AND SPRAY NOZZLES Influence of liquid viscosityLI

QUID

SPR

AYAN

D SP

RAY

NOZZ

LES

29wwwpnr-nozzlescomCTG SH 07 EU

With reference to the Bernoulli Rule as exposed in page 6 one can say that the pressure energy of the liquid flow at the nozzle inlet is transformed totally (minus some losses due to friction inside the nozzle) into liquid velocity at the nozzle orificeCatalogue figures give nozzle capacities when spraying waterIf the specific gravity or density of the liquid is different from that of water the available pressure energy will produce a different liquid velocity at the nozzle orificesIn other words a given quantity of energy will spray always the same quantity of liquid mass but different volumes (flow rates) according to the liquid specific gravity or density

Therefore a liquid heavier than water will exit the nozzle with a lower velocity at lower flow rate while to the contrary a liquid lighter than water will be sprayed at higher velocity at higher flow rate

The following formula is to be applied

The table below gives the value of a correction factor to obtain the flow rate of a liquid with different specific weight as water

WhereQL Liquid flow rateQW Water flow rateF Correction factor

kgliter Libregallon F

06 50 129

07 58 120

08 67 112

09 75 105

10 83 100

11 92 095

12 100 091

13 109 088

14 117 085

15 125 082

16 134 079

17 142 077

18 150 075

19 159 073

20 167 071

QL = F QW8

LIQUID SPRAY AND SPRAY NOZZLES Influence of liquid specific gravity

LIQU

ID S

PRAY

AND

SPRA

Y NO

ZZLE

S

30 wwwpnr-nozzlescom CTG SH 07 EU

The spraying water impact of a nozzle depends on several factors and more precisely spray distribution pattern and spray angle The first step to calculate the impact value which is usually expressed in Kilograms per square centimeter is to deter-mine Total Theoretical lmpact Value using the following formula

The obtained value has to be multiplied by the Total Theoretical Impact per Square Centimeter Coefficient (E)The final value is the Spraying Liquid Impact expressed in kgpcm2Of course not alI the energy of the fluid vein is transferred to the impact point

A part of this energy sometimes a considerable part goes to obtain a desired spraying angle by having the liquid vein acquire a high rotational speed inside the whirl chamber The highest value of impact is obtained with straight jet nozzle and the value can be calculated multiplying spraying pressure per 19The tables below containing the Total Theoretical Impact sqcm coefficient values for different spray pattern nozzles for a dis-tance of 300 mm

[kgpcm2]

TOTAL THEORETICAL IMPACT PER SQ CM COEFFICIENT AT DISTANCE OF 300 MM (E)

Spray Flat jet nozzle Spray Full cone nozzle Spray Hollow cone nozzle Angle Angle Angle

15deg 0300 15deg 0110 25deg 0180 35deg 0130 30deg 0025 40deg 0120 50deg 0100 50deg 0010 65deg 0070 65deg 0004 60deg80deg 001002 80deg 0050 80deg 0002 100deg 0001

WhereQ is the flow rate at working pressure in lpmP is the pressure value in kgpcm2

[kgpcm2]TTI = 0024 Q P

SLI = E TTI

9

10

LIQU

ID S

PRAY

AND

SPRA

Y NO

ZZLE

SLIQUID SPRAY AND SPRAY NOZZLES Jet impact

31wwwpnr-nozzlescomCTG SH 07 EU

Jet impact diagram

A further parameter to characterize the performance of a spray nozzle is the distribution of the jet impact force which could be derived by means of mathematical methods from the values of the spray distribution onto the surface covered by the spray but which can more easily be measured with the help of specifically designed instrumentation

In some applications the jet impact force Is the most important parameter used to realize the required processSteel sheet descaling in a rolling mill is a typical example where the jet impact is required to take away the surface scale and obtain a perfectly even surfaceFor that reason special nozzles have been developed to perform this very task where service life impact value and spray distribution reach the values required for satisfactory resultThese test are performed in a laboratory equipped with a specifically designed instrumentation where the high pressures involved in these process can be reached which can measure the pressure values along a matrix of points distributed in the spray area covered by the nozzle

These values are supplied both in a table of values and as a 3D pressure diagram similar to those shown below

On such applications where producing high impact values in the jet is necessary it is of paramount importance that the liquid flow turbulence is kept to a minimum and therefore it is widely used to insert into the nozzle entrance devices designed to improve the operating conditions by forcing the liquid flow through straight passages with several different shapes by doing so the impact delivered by the spray is increased with the same feed pressure

One typical shape used by Pnr is shown on the right and the two dia-grams below show the impact force diagrams for the same nozzle with and without a flow straightener the reduction of flow turbulence can lead in increase of impact force often higher than 20Further improvements of course are available when the nozzle inside profile is properly designed in order to avoid sharp cross section changes and all surfaces are finished as smoothly as possible

Typical design of a Pnr flow straightener

Impact pressure diagram with flow straightenerImpact pressure diagram without flow straightener

LIQU

ID S

PRAY

AND

SPRA

Y NO

ZZLE

S

LIQUID SPRAY AND SPRAY NOZZLES Jet impact

32 wwwpnr-nozzlescom CTG SH 07 EU

LIQUID SPRAY AND SPRAY NOZZLES Pressure drop through a nozzle

Pressure drop through a nozzle

Some of our customers have asked us In the past which Is the pressure drop through a nozzle since they consider a nozzle one of the parts in a piping like a valve or an elbow which causes a given pressure drop along the line

The reality is different and can be easily understood when considering the Bernoulli formula [2] as given at page 19 of this manual the formula says that the total energy of a liquid flow is made from the addition of three facors

Potential energy due to elevationbullPressure energybullVelocity energybull

When we apply the formula at the entrance and at the outlet ( the orifice ) of a nozzle and we neglect the influence of turbulence losses in between we can easily see that

The potential energy variation can be neglected because of the limited dimensions of the nozzle since the distance bullbetween the nozzle entrance and the nozzle orifice plays no role-The pressure energy variation is important since the liquid pressure value falls abruptly from the pressure inside the feed bullpipe to the ambient pressureThe velocity energy variation is also consistent since the liquid is ejected from the orifice at high speedbull

In other words the pressure energy of the liquid flowing through the orifice is suddenly transformed in liquid drops velocity which is exactly what a nozzle is designed to do

This is shown from equation [3] at page 19 which allows the exit velocity from the nozzle to be calculated from the pressure inside the pipe ( we actually consider the pressure difference between the inside of the pipe and the ambient pressure in this formula )

In other words all the energy still available at the nozzle is converted into velocity or if you so prefer you have a total pressure fall The system designer shall therefore evaluate all the pressure drop between the pump outlet flange and the nozzle entrance in order to be sure that the nozzle feed pressure is sufficient to assure the desired capacity for the liquid being sprayed

parameters valuesat nozzle outlet

nozzle inlet nozzle oulet or orice

feed pressure

inlet velocity

parameters valuesat the nozzle inlet

(A)potential elevation

energy

(A)velocity ( kinetic ) energy

(A)pressure energy

ambient pressure

exit velocity

LIQU

ID S

PRAY

AND

SPRA

Y NO

ZZLE

S

33wwwpnr-nozzlescomCTG SH 07 EU

NOZ

ZLE

MAT

ERIA

LS

The choice of the right material for a nozzle is sometimes the most important one to do since the nozzle operating life depends upon it There are several factors to influence or shorten the nozzle operating life sometimes more than one at the same time the most important being

Wear from solid particles suspended into the liquid being sprayed1 Chemical corrosion from the liquid being sprayed 2 Chemical corrosion from the ambience outside the nozzle3 Exposure to high temperature 4 Exposure to mechanical shocks5

NOZZLE MATERIALSPnr material codes 34Properties of materials 35Mechanical properties of materials 39Chemical resistance of materials 40

NOZZLE MATERIALS

34 wwwpnr-nozzlescom CTG SH 07 EU

PNR has adopted a short code to identify construction materials for nozzles and nozzle partsHere below the most frequenty used materials

MATERIAL STANDARDS

The following standards are mentioned with reference to materials identification

NOZ

ZLE

MAT

ERIA

LS

A1 Free Cutting Steel E1 TEFLONreg (PTFE) L3 NICROFERreg 5923

A2 Carbon Steel E3 DELRINreg (POM) L4 STELLITEreg 6

A8 Zinc Plated Mild Steel E6 PERSPEXreg (PMMA) L5 HASTELLOYreg B2

A9 Nickel Plated Mild Steel E7 VITONreg (FPM) L6 HASTELLOYreg C4

B2 AISI 304 Stainless Steel E8 NBR- Sh 70 Rubber L61 HASTELLOYreg C22

B3 AISI 316 Stainless Steel E81 SANTOPRENEreg Rubber L62 ULTIMETreg

B31 AISI 316L Stainless Steel E82 KLINGERITEreg L7 NICKEL 201

B4 AISI 321 Stainless Steel E83 HYPALONreg L8 HASTELLOYreg C276

B8 AISI 309 Stainless Steel E91 Silicon L9 SANICROreg 28 SS

B81 AISI 310 Stainless Steel F12 Tungsten Carbide (TC) N1 AISI 302 Stainless Steel

C1 AISI 420 St Steel hardened F2 PIREXreg P6 ABS

C4 AISI 317 Stainless Steel F3 Rubin P7 FASIT OIL

C6 SAF 2205 Stainless Steel F4 Zapphire P8 EPDM ShA Rubber

D1 Polyvinylchloride (PVC) F5 Ceramic P9 STIROLUXreg 637

D2 Polypropylene (PP) F6 Silicon Carbide (SC) T1 Brass

D3 Polyamide (PA) G1 Cast Iron T3 Copper

D5 Powder Charged PP H1 Titanium T5 Bronze

D6 Fiberglass Charged PP L1 MONEL 400 T8 Nickel Plated Brass

D7 High Density Polyethylene L2 INCOLOYreg 825 V1 Aluminium

D8 Polyvinylidenefluoride (PVDF) L21 INCONELreg 600 V7 Aluminium ENP

STANDARD ORGANIZATION COUNTRY STANDARD CODE

AFNOR Association Franccedilaise de Normalisation France NF

AISI American Iron and Steel Institute USA AISI

ANSI American National Standards Institute USA ANSI

ASTM American Society for Testing and Materials USA ASTM

BSI British Standards Institution UK BS

DIN Deutsches Institut fuumlr Normung Germany DIN

DSIT Dansk StandardsInformation Technology Denmark DS

ISO International Organization for Standardization International ISO

JIS Japanese Institute for Standard Japan JIS

UNI Ente Nazionale di Unificazione Italy UNI

NOTEThe complete list of the Materials Codes may be requested to our Technical Service mentioning release code TGCE CODMAT

NOZZLE MATERIALS PNR material codes

35wwwpnr-nozzlescomCTG SH 07 EU

NOZ

ZLE

MAT

ERIA

LS

B1 AISI 303 STAINLESS STEEL

Chemical composition CR 1750 NI 850 S 025 Coding correspondence

Type Stainless Steel Austenitic AISI 303

Hardening Not possible BS 303 S 21

Annealing 1050 1100deg C in water DIN Wnr 14305

Welding Possible with precautions Euro X10CrNiS1809

Corrosion properties

Good resistance Atmospheric exposure food substances organic chemicalsLow resistance Chlorides reducing acids and over 800deg C

JIS SUS 303

NF Z6CN 18-09

SIS 2346

UNI XWCrNiS 1809

B3 AISI 316 STAINLESS STEEL

Chemical composition C 005 CR 170 NI 120 MO 225 Coding correspondence

Type Stainless Steel Austenitic AISI 316

Hardening Not possible BS 316 S 21

Annealing 1050 1100deg C in water DIN Wnr 14401

Welding Easy using same steel electrodes Euro X6CrNiMo17122

Corrosion properties

Good resistance Atmosphere great number of salts organic acids foodsLow resistance Solutions of reducing acids temperatures over 500deg C

JIS SUS 316

NF Z6CND 17-11

SIS 2347

UNI X5CrNiMo1712

B31 AISI 316L STAINLESS STEEL

Chemical composition C 003 CR 170 NI 130 MO 225 Coding correspondence

Type Stainless Steel Austenitic AISI 316 L

Hardening Not possible BS 316S12

Annealing 1050 1100deg C in water DIN Wnr 14404

Welding Easy using same steel electrodes Euro X3CrNiMo1810

Corrosion properties

Good resistance Atmosphere great number of salts organic acids foods salt waterLow resistance Solutions of reducing acids temperatures over 500deg C

JIS SUS 316L

NF Z2CND17-12

SIS 2348

UNI X2CrNiMo 1712

NOZZLE MATERIALS Properties of materials

36 wwwpnr-nozzlescom CTG SH 07 EU

C1 AISI 420 STAINLESS STEEL

Chemical composition C 020 CR 1300 Coding correspondence

Type Stainless Steel Martensitic AISI 420

Hardening 980deg - 1030deg C in oil BS 420 S 29

Annealing 750deg - 800deg C in air DIN Wnr 14021

Welding Possible with precautions Euro X20Cr13

Corrosion properties Good resistance Drinkable water steamgasoline oil alcohol ammonia

JIS SUS 420 J1

NF Z20C13

SIS 2303

UNI X20Cr13

C2 AISI 416 STAINLESS STEEL

Chemical composition C 012 CR 1250 S 022 Coding correspondence

Type Stainless Steel Martensitic AISI 416

Hardening 950deg - 1100deg C in oil BS 416 S 21

Annealing 750deg - 800deg C DIN Wnr ---

Welding Not possible Euro X120CrS13

Corrosion properties Good resistance Drinkable water steamgasoline oil alcohol ammonia

JIS SUS 416

NF Z12CF13

SIS ---

UNI X12CrS13

D8 POLYVINYLIDENE FLUORIDE (PVDF)

Description HIGH-MOLECULAR WEIGHT THE TOUGHEST OF THE FLUOROCARBON RESINS

Trade names amp SuppliersKYNAR (Atochem North America Inc formerly Penwalt Corporation)

SOLEF (Solvay Polymer Corporation)

Physical andMechanical Properties

Excellent resistance to abrasion and stress fatigue

Extremely pure opaque white resin

Thermal Properties UsefuI in temperatures ranging from -73 149degC (-100 300degF)Heat deflection temperature is (8090deg C at 182 Bars (176 194deg F at 264 psi)

Chemical Compatibility

Excellent chemical resistanceCan be used with wet or dry halogens most strong acids and bases aliphatics aromaticsalcohols and strong oxidizing agentsNot recommended for contact with ketones esters amines and some organic acids(fuming sulfuric acid)

NOZZLE MATERIALS Properties of materialsN

OZZL

E M

ATER

IALS

37wwwpnr-nozzlescomCTG SH 07 EU

E1 POLYTETRAFLUOROETHYLENE (PTFE)

Description FLUOROPLASTIC THAT HAVE SOME OR ALL OF THEIR HYDROGEN MOLECULESREPLACED BY FLUORINE

Trade names amp Suppliers

TEFLON TFE FEP and PFA (Dupont Polymer Products)

NEOFLON (Daikin)

FLUON (ICI Americas Inc)

SST-2SST-3 (Shamrock Technologies Inc)

Physical andMechanical Properties

Low coefficient

Low adhesiveness

Buona resistenza agli agenti atmosferici

Good weatherabilityLow resistance to creep and wear unless reinforced with glass figravebers which results in superior resistance

Thermal Properties High and low temperature stabilityHeat deflection temperatures range from 4855deg C at 182 bar (118-132deg F at 264 psi)

Chemical CompatibilityChemically inert

Totally insoluble

E3 ACETAL (ACETAL HOMOPOLYMERS AND COPOLYMERS)

Description HIGHLY CRYSTALLINE RESINS BASED ON FORMALDEHYDE POLYMERIZATION TECHNOLOGY

Trade names amp Suppliers

DELRIN (Dupont Polymer Products Corporation)

CELCON (Hoechst Celanese Corporation)

ULTRAFORM (BASF Corporation)

RTP 800 (RTP Corporation)

LUPITAL amp TENAL (Franklin Polymers Inc)

FULTRON 404 (ICI Americas Inc)

Physical andMechanical Properties

High tensile strength rigidity and esilience

High fatigue endurance

Excellent dimensional stability

Low coefficient of friction

Outstanding abrasion and wear resistance

Excellent creep resistance

Thermal Properties Heat deflection temperatures range from 110 -136deg C at 182 bars(230 - 270deg F at 264 psi) higher if glass figravelled

Chemical Compatibility

Remains stable in long-term high temperature water immersionExcellent resistance to chemicals and solvents but prolonged exposure to strong acids not recommendedNote Suitable for close-tolerance high-performance partsAvailable for machined parts or may be injection molded

NOZZLE MATERIALS Properties of materials

NOZ

ZLE

MAT

ERIA

LS

38 wwwpnr-nozzlescom CTG SH 07 EU

L6 HASTELLOY C4

PHYSICAL AND MECHANICAL PROPERTIES CHEMICAL COMPOSITION CORROSION RESISTANCE

R = 650800 Mpa C = 0015 max

Very good against pitting and tensile-corrosion specially in oxydizing atmosphereResistance in welded joints definitely better than C 276 lower than C22

Rp02 = 250470 Mpa Ni = 65

HRB = 90 Cr = 160

Mo = 155

W = --

Fe = 3 max

Ti = 05

Co = 2 max

APPLICATIONSRecommended for applications with strongly oxidizing atmosphere

L61 HASTELLOY C 22

PHYSICAL AND MECHANICAL PROPERTIES CHEMICAL COMPOSITION CORROSION RESISTANCE

R = 700800 Mpa C = 001 max

Excellent performances with oxydizing atmospheres as well as for pitting and tensile-corrosion conditionsVery good resistance in reducing atmospheres and for welded joints

Rp02 = 360420 Mpa Ni = 56

HRB = 93 Cr = 22

Mo = 13

W = 3

Fe = 3

Ti = --

Co = 25 max

APPLICATIONSChemical industry (gas ducts gas washing and treatment systems phosphoric acid production) Heat exchangers pumps chlorination reactors

L8 HASTELLOY C 276

PHYSICAL AND MECHANICAL PROPERTIES CHEMICAL COMPOSITION CORROSION RESISTANCE

R = 600800 Mpa C = 0015 max

Very good in reducing and oxydizing atmospheresVery good against pitting and tensile-corrosionAcceptable resistance in welded jointsIn cast parts excessive segregation not eliminated by thermal treatment of annealing makes it convenient to use C22 or C4 qualitieswhich assure better corrosion resistance and mechanical properties

Rp02 = 300370 Mpa Ni = 57

HRB = 90 Cr = 145165

Mo = 1517

W = frac345

Fe =

V = 035 max

Co = 25 max

APPLICATIONSChemical industry (air ducts scrubbers fans) Paper industry Thermoelectric plants Steel thermal treatments

NOZ

ZLE

MAT

ERIA

LSNOZZLE MATERIALS Properties of materials

39wwwpnr-nozzlescomCTG SH 07 EU

MATERIALTENSILE STRENGHT

CORROSION RESISTANCERp 02 R

20degC 800degC 20degC 800degC

(68degF) (1408degF) (68degC) (1408degC)

AISI 302 280 100 680 200

Good sensitive to corrosionbetween grains for slow heatingand cooling in the 450-900deg Crange temperature

AISI 303 280 100 680 200 Discrete

AISI 304304L 270 90 600 100Good especially for 304L304 sensitive to corrosionbetween grains like AISI 302

AISI 309 250 100 640 220 Good Sensitive to corrosion between grains like AISI 302

AISI 310 310 170 650 270Good (gt 304 - 304L)Sensitive to corrosionbetween grains like AISI 302

AISI 316316L 270 110 560 220 Very high especially for 316L

AISI 321 210 100 540 140 Good

AISI 347 280 120 620 200 Good

AISI 416 620 70 750 90

Good in medium corrosive ambient (atmosphere water gasoline alcohol N1-13 foods)Not in high corrosive

BRASS 110-150 --- 360-410 --- Good especially when nickel plated

BRONZE 100-300 --- 200-600 --- Discrete especially with sea water

CAST IRON le 500 V 100-800 V

NICKEL ALLOYS 100-1000 V 300-1300 VVery high also for high temperature To use in the temperaturerange 800-1200deg C

PLASTICS --- --- 20-200 ---

Good also for erosionGenerally they are attackedwith oxidizers like nitric acidhalogens ect

PTFE --- --- 30-40 ---

Very high except for elementarystate of alkaline metalsand to compounds containingfluorine at high temp

DUPLEX STEEL gtAISI 3 gtAISI 3 gtAISI 3 gtAISI 3 Very high also with high temperatureand also for pitting

TITANIUM alloy 195-850 V 300-900 VVery high in oxidizing ambientVery low in reducing ambient and with compounds containing fluorine

Legend Rp 02 = 02 YIELD STRENGHT [MPa]R = ULTIMATE TENSILE STRENGHT [MPa]V = To verify time by time

NOZZLE MATERIALS Mechanical properties of materials

NOZ

ZLE

MAT

ERIA

LS

73wwwpnr-nozzlescomCTG SH 07 EU

PIPI

NG

PIPINGPipes data 74Economic pipe sizes 75Pressure drop in clean steel pipes 76Flange dimensions 78Sieve size conversion chart 80

PIPING

74 wwwpnr-nozzlescom CTG SH 07 EU

The following table report the data of pipes according to ANSI B3619 that is one of the most used standards that regulate welded stainless steel pipes

DN NPS OD[mm]

SCHEDULE

5S 10S 40SSTD 80SXS

t m t m t m t m

[mm] [kgm] [mm] [kgm] [mm] [kgm] [mm] [kgm]

6 18 103 NA NA 124 028 173 037 241 048

8 14 137 NA NA 165 050 224 064 302 081

10 38 172 NA NA 165 064 231 086 320 112

15 12 213 165 081 211 101 277 128 373 164

20 34 267 165 103 211 130 287 171 391 223

25 1 334 165 131 277 212 338 254 455 328

32 1frac14 422 165 167 277 273 356 344 485 453

40 1frac12 483 165 192 277 315 368 411 508 549

50 2 603 165 242 277 399 391 551 554 759

65 2frac12 730 211 374 305 534 516 875 701 116

80 3 889 211 458 305 655 549 115 762 155

90 3frac12 1016 211 525 305 752 574 138 808 189

100 4 1143 211 592 305 849 602 163 856 226

125 5 1413 277 960 340 117 655 221 953 314

150 6 1683 277 115 340 140 711 287 1097 432

200 8 2191 277 150 376 202 818 431 1270 656

250 10 2730 340 229 419 282 927 611 1270 827

300 12 3239 396 317 457 365 953 749 1270 988

350 14 3556 396 348 478 419 NA NA NA NA

400 16 4064 419 421 478 480 NA NA NA NA

450 18 457 419 474 478 541 NA NA NA NA

500 20 508 478 602 554 696 NA NA NA NA

550 22 559 478 662 554 767 NA NA NA NA

600 24 610 554 837 635 959 NA NA NA NA

Where

DN = Nominal diameter NPD = Nominal Pipe Size OD = Outside Diameter t = Wall Thickness m = Specific WeightPIPI

NG

PIPING Pipes data

75wwwpnr-nozzlescomCTG SH 07 EU

The following Specific Pressure Drops (Y) are normally used in the good engineering practice(where Y=ΔPL ΔP Pressur Drop and L Pipe Lenght)

For pipe sizing the Velocity (V) is also usedIn the following table are shown the typical liquid velocities in steel pipes

Some fixed pressure drop values indicationsfor gate valves (fully open) consider a pressure drop of 5 metersbullfor normal bends consider a pressure drop of 5 metersbullfor a check valve consider a pressure drop of 15 metersbull

In the succeeding tables we show the velocity and specific pressure drop for several flow rates and pipe diameters

Not boiling waterY = 02divide05 bar100 m for pump discharge (07 bar100 m max if P gt 50 bar)

Y lt 0110 bar100 m for pump suction

Boiling water Y = 004divide005 bar100 m for pump suction (velocity = 03divide09 ms)

LIQUID LINE TYPE

Specific Pressure Dropsvs Velocity [ms]

0 lt V lt 2 3 lt V lt 10 10 lt V lt 20

NOT BOILING WATER

Pump suctionPump discharge (long)Discharge leads (short)Boiler feedDrainsSloped sewer

03 divide 0606 divide 0912 divide 2712 divide 2709 divide 12

-

06 divide 1209 divide 1515 divide 3715 divide 3709 divide 1509 divide 15

09 divide 1812 divide 2124 divide 4224 divide 42

-12 divide 21

HYDROCARBON LIQUIDS(normal viscosity)

Pump suctionDischarge heather (long)Discharge leads (short)Drains

05 divide 0808 divide 1112 divide 2709 divide 12

06 divide 1209 divide 1515 divide 3709 divide 15

09 divide 1812 divide 2124 divide 46

-

MEDIUM VISCOSITY OILPump suctionDischarge (short)Drains

--

03

05 divide 0901 divide 0209 divide 15

08 divide 1501 divide 0312 divide 18

OTHER WATERCooling tower Chilled waterSea water and generally foulingwater (long pipes) ()

06 divide 09 09 divide 15 12 divide 21

Note () In this case Cameron method has to be used with C=1 Y = 005 divide 012 bar100 m for principal manifold Y = 012 divide 023 bar100 m for secondary manifold

PIPI

NG

PIPING Economic pipe sizes

76 wwwpnr-nozzlescom CTG SH 07 EU

18rdquo 14rdquo

1 0350 0370 0200 0090 38rdquo 12rdquo

2 0705 1340 0395 0331 0223 0082 0145 0029 34rdquo

3 1060 2890 0593 0673 0333 0176 0217 0061 0125 0016 1rdquo

4 1410 4940 0788 1150 0444 0291 0290 0101 0167 0027 0110 0010

5 1760 7460 0985 1750 0556 0424 0362 0149 0209 0040 0137 0014

6 1180 2460 0667 0594 0434 0207 0251 0054 0165 0019 114rdquo

8 1580 4060 0892 1020 0579 0351 0335 0091 0219 0033 0126 0009 112rdquo

10 1110 1530 0724 0534 0418 0136 0274 0049 0158 0012 0116 0006

15 1670 3250 1090 1130 0627 0284 0411 0099 0236 0026 0174 0012

20 2rdquo 2230 5600 1450 1900 0836 0481 0549 0168 0315 0043 0233 0021

30 0212 0013 212rdquo 2170 4130 1250 1020 0823 0353 0473 0092 0348 0043

40 0283 0022 0190 0007 2900 7180 1670 1760 1100 0606 0631 0155 0465 0073

50 0354 0032 0237 0012 2090 2700 1370 0911 0789 0233 0581 0108

60 0424 0044 0284 0017 2510 3810 1650 1290 0943 0321 0697 0150

70 0495 0079 0332 0022 3rdquo 2930 5120 1920 1720 111 0434 0814 0199

80 0566 0074 0379 0028 0248 0010 312rdquo 2190 2210 126 0554 0925 0253

90 0636 0093 0427 0035 0279 0013 0209 0006 2470 2770 142 0692 1040 0319

100 0707 0114 0474 0043 0310 0015 0232 0007 4rdquo 2740 3400 158 0843 1160 0392

150 1060 0238 0711 0090 0464 0031 0349 0016 0272 0008 4110 7440 236 181 1740 0828

200 1410 0414 0948 0153 0619 0053 0466 0027 0362 0014 315 314 2330 1450

250 1760 0625 1190 0233 0774 0080 0581 0040 0453 0021 5rdquo 2900 2200

300 2120 0889 1420 0324 0930 0112 0698 0055 0543 0030 0352 0011 3480 3070

350 2470 1190 1660 0438 1080 0150 0815 0074 0634 0040 0411 0014 6rdquo 4070 4160

400 2830 1550 1900 0563 1240 0195 0935 0096 0724 0051 0469 0018 0341 0007 4650 5380

450 3180 1930 2130 0707 1390 0242 1050 0120 0815 0063 0528 0022 0366 0009 5230 6790

500 3540 2380 2370 0867 1550 0298 1170 0147 0902 0076 0587 0027 0407 0011

550 3880 2870 2610 1040 1700 0354 1280 0174 0991 0092 0645 0032 0447 0013

600 4240 3390 2840 1220 1860 0418 1400 0204 1090 0110 0704 0037 0488 0015

650 4590 5560 3080 1420 2010 0486 1510 0239 1180 0127 0762 0043 0529 0017

700 4950 4550 3320 1650 2170 0560 1630 0275 1270 0146 0821 0050 0569 0020

750 5300 5200 3560 1880 2320 0637 1750 0314 1360 0164 0879 0057 0610 0023

800 3790 2130 2480 0721 1860 0354 1450 0185 0936 0064 0651 0025 8rdquo

850 4030 2390 2630 0805 1980 0395 1540 0209 1000 0072 0692 0028 0403 0007

900 2790 0901 2090 0438 1630 0232 1050 0008 0732 0032 0427 0008

950 2940 1000 2210 0486 1720 0258 1120 0087 0773 0036 0451 0010

1000 3100 1110 2320 0534 1810 0284 1170 0096 0814 0039 0474 0011

1100 3410 1290 2560 0643 1990 0341 1290 0116 0895 0047 0522 0012

1200 3720 1 580 2800 0763 2170 0403 1410 0135 0974 0055 0569 0015

1300 3030 0890 2360 0473 1530 0157 1060 0063 0616 0017

1400 3260 1020 2540 0544 1640 0183 1140 0072 0664 0019

1500 3490 1170 2720 0617 176 0208 1220 0083 0712 0022

1600 3720 1330 2890 0697 1880 0234 1300 0093 0758 0025

1700 10rdquo 3950 1490 3080 0784 1990 0260 1380 0104 0806 0028

1800 0546 0010 3260 0875 2110 0290 1470 0116 0854 0032

1900 0575 0012 3440 0965 2230 0323 1550 0129 0901 0034

2000 0606 0012 3617 1060 2340 0356 1630 0143 0946 0037

2200 0667 0015 3980 1280 2580 0429 1790 0172 1050 0045

2400 0727 0017 12rdquo 2820 0507 1950 0200 1140 0053

2600 0788 0021 0563 0009 3050 0589 2110 0234 1230 0061

2800 0848 0023 0606 0010 14rdquo 3280 0676 2280 0268 1330 0070

3000 0909 0026 0649 0011 0532 0007 3520 0773 2440 0306 1420 0080

3500 1060 0035 0760 0015 0620 0009 4110 105 2850 0416 1660 0108

4000 1210 0045 0866 0020 0709 0012 16rdquo 4690 135 3250 0532 1900 0139

4500 1360 0056 0976 0025 0798 0015 0606 0007 3660 0674 2130 0173

5000 1520 0069 1080 0029 0886 0018 0674 0009 4070 0822 2370 0212

6000 1810 0097 1290 0042 1070 0026 0808 0013 18rdquo 4880 1160 2850 0301

7000 2120 0130 1510 0055 1240 0035 0940 0017 0741 0010 5690 1580 3310 0403

8000 2420 0168 1730 0072 1420 0045 1080 0022 0847 0012 6510 2050 3790 0525

9000 2730 0210 1950 0091 1600 0056 1210 0027 0954 0015 4270 0659

10000 3030 0257 2170 0111 1770 0067 1350 0033 1050 0019 4740 0801

Legend Q Water Flow Rate (Lpm) V Velocity (ms) Y Specific Pressure Drops (bar100m)Water at ambient temperature in straight pipe

SPECIfIC PRESSURE DROPS fOR WATER fLOW IN CLEAN STEEL PIPE SCH 10S

Q V Y V Y V Y V Y V Y V Y V Y V Y [lm] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m]

PIPI

NG

77wwwpnr-nozzlescomCTG SH 07 EU

SPECIfIC PRESSURE DROPS fOR WATER fLOW IN CLEAN STEEL PIPE SCH 40S

Legend Q Water Flow Rate (Lpm) V Velocity (ms) Y Specific Pressure Drops (bar100m)Water at ambient temperature in straight pipe

18rdquo 14rdquo

1 0458 0726 0251 0170 38rdquo 12rdquo

2 0918 2590 0501 0600 0272 0136 0170 0044 34rdquo

3 1380 5590 0752 1220 0407 029 0255 0091 0144 0023 1rdquo

4 1840 9570 1000 2090 0543 048 0340 0151 0192 0038 0120 0012

5 2290 14450 1250 3180 0679 070 0425 0223 0241 0057 0150 0017

6 1500 4460 0815 0980 0510 0309 0289 0077 0180 0024 114rdquo

8 2010 7360 1090 1690 0680 0524 0385 0129 0240 0041 0138 0011 112rdquo

10 1360 2520 0850 0798 0481 0193 0300 0061 0172 0015 0127 0008

15 2040 5370 1280 1690 0722 0403 0450 0124 0258 0032 019 0015

20 2rdquo 2720 9240 1700 2840 0962 0683 0600 0210 0344 0054 0254 0026

30 0231 0016 212rdquo 2550 6170 1440 1450 0900 0442 0517 0114 038 0053

40 0308 0027 0216 0010 3400 10720 1920 2500 1200 0758 0689 0193 0507 0091

50 0385 0039 0270 0017 2410 3830 1500 1140 0861 029 0634 0135

60 0462 0055 0324 0023 2890 5410 1800 1610 103 0400 0761 0187

70 0539 0098 0378 0031 3rdquo 3370 7270 2100 2150 1210 0541 0888 0248

80 0616 0092 0432 0039 028 0014 312rdquo 2400 2760 1380 0690 1010 0315

90 0693 0115 0486 0048 0315 0017 0235 0008 2700 3470 1550 0862 1140 0397

100 0770 0141 0540 0059 035 002 0261 0010 4rdquo 3000 4250 1720 1050 1270 0488

150 1150 0295 0810 0125 0524 0042 0392 0021 0304 0011 4500 9300 2580 2260 1900 1030

200 1540 0512 1080 0212 0699 0072 0523 0036 0405 0019 3440 3910 2540 1810

250 1920 0773 1350 0322 0874 0108 0653 0053 0507 0028 5rdquo 3170 2740

300 2310 1100 1620 0449 105 0152 0784 0074 0608 004 0387 0014 3800 3820

350 2690 1470 1890 0606 122 0203 0915 0099 0710 0053 0452 0018 6rdquo 4440 5180

400 3080 1920 2160 0780 14 0264 1050 0128 0811 0068 0516 0023 0375 0009 5070 6690

450 3460 2390 2430 0979 157 0328 1180 0161 0912 0084 0581 0028 0402 0012 5710 8450

500 3850 2950 2700 1200 175 0403 1310 0196 1010 0101 0646 0034 0447 0014

550 4230 3550 2970 1440 192 0479 1440 0232 1110 0122 0710 0041 0491 0016

600 4620 4200 3240 1690 2100 0566 1570 0273 1220 0146 0775 0047 0536 0019

650 5000 6880 3510 1970 2270 0658 1700 0319 1320 0169 0839 0055 0581 0022

700 5390 5630 3780 2280 2450 0759 1830 0368 1420 0194 0904 0063 0625 0025

750 577 6440 4050 2600 2620 0863 1960 042 1520 0218 0968 0072 067 0029

800 4320 2950 2800 0977 2090 0473 1620 0246 1030 0081 0715 0032 8rdquo

850 4590 3310 2970 1090 2220 0528 1720 0277 1100 0091 076 0036 0439 0009

900 3150 1220 2350 0585 1820 0308 1160 0100 0804 0041 0465 001

950 3320 1350 248 0649 1930 0342 1230 0111 0849 0045 0491 0012

1000 3500 1500 261 0714 2030 0377 1290 0122 0894 0049 0516 0013

1100 3850 1750 2870 0860 2230 0452 1420 0147 0983 0059 0568 0015

1200 4200 2140 3140 1020 2430 0534 1550 0172 1070 0069 0620 0018

1300 3400 1190 2640 0627 1680 0200 1160 008 0671 0021

1400 3660 1370 2840 0722 1810 0232 1250 0091 0723 0024

1500 3920 1560 3040 0818 1940 0264 1340 0105 0775 0027

1600 4180 1780 3240 0924 2070 0297 1430 0118 0826 0031

1700 10rdquo 4440 1990 3450 1040 2190 0331 1520 0132 0878 0035

1800 0590 0012 3650 1160 2320 0369 1610 0147 0930 0039

1900 0622 0014 3850 1280 2450 041 1700 0163 0981 0042

2000 0655 0015 40500 1410 2580 0452 1790 0181 1030 0046

2200 0721 0018 4460 1700 2840 0545 1970 0217 1140 0056

2400 0786 0021 12rdquo 3100 0645 2140 0253 1240 0065

2600 0852 0025 0600 001 3360 0749 2320 0296 1340 0076

2800 0917 0028 0646 0012 14rdquo 3610 0859 2500 0339 1450 0087

3000 0983 0032 0692 0013 0573 0008 3870 0982 268 0387 1550 0099

3500 1150 0043 0810 0018 0668 0011 4520 1330 3130 0526 1810 0134

4000 1310 0055 0923 0023 0764 0014 16rdquo 5160 1720 3570 0673 2070 0172

4500 1470 0068 1040 0029 0860 0018 0658 0009 4020 0853 2320 0214

5000 1640 0084 1150 0034 0955 0022 0731 0011 4470 1040 2580 0262

6000 1960 0118 1380 0049 1150 0031 0877 0016 18rdquo 5360 1470 3100 0373

7000 2290 0158 1610 0065 1340 0042 1020 0021 0808 0012 6250 2000 3610 0499

8000 2620 0204 1840 0085 1530 0054 1170 0027 0924 0015 7150 2590 4130 065

9000 2950 0256 2080 0107 1720 0067 1310 0033 1040 0019 4650 0816

10000 3280 0313 2310 0130 1910 0081 1460 0041 1150 0023 5160 0992

Q V Y V P V Y V Y V Y V Y V Y V Y [lm] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m] [ms] [bar100m]

PIPI

NG

78 wwwpnr-nozzlescom CTG SH 07 EU

10 75 12 038 4 11 50

15 80 12 044 4 11 55

20 90 14 065 4 11 65

25 100 14 082 4 11 75

32 120 14 117 4 14 90

40 130 14 139 4 14 100

50 140 14 162 4 14 110

65 160 14 214 4 14 130

80 190 16 343 4 18 150

100 210 16 422 4 18 170

125 240 18 611 8 18 200

150 265 18 751 8 18 225

175 295 20 1020 8 18 255

200 320 20 1230 8 18 280

250 375 22 1850 12 18 335

300 440 22 2550 12 22 395

350 490 22 3180 12 22 445

400 540 22 3850 16 22 495

450 595 22 4700 16 22 550

500 645 24 6040 20 22 600

PN 6 (UNI 6091)

ND 6 (DIN 2527) DN Flange Holes

D t W N Oslash a

90 14 063 4 14 60

95 14 071 4 14 65

105 16 101 4 14 75

115 16 122 4 14 85

140 16 180 4 18 100

150 16 209 4 18 110

165 18 287 4 18 125

185 18 365 4 18 145

200 20 461 8 18 160

220 20 565 8 18 180

250 22 812 8 18 210

285 22 1050 8 22 240

315 24 1410 8 22 270

340 24 1620 12 22 295

405 28 2510 12 25 355

460 28 3520 12 25 410

520 30 4820 16 25 470

580 32 6350 16 30 525

640 32 7720 20 30 585

715 34 1020 20 33 650

PN 16 (UNI 6093)

ND 16 (DIN 2527) Dimensions Holes

D t W N Oslash a

ND 10 (DIN 2527) Dimensions Holes

D t W N Oslash a

90 14 063 4 14 60

95 14 071 4 14 65

105 16 101 4 14 75

115 16 122 4 14 85

140 16 180 4 18 100

150 16 209 4 18 110

165 18 287 4 18 125

185 18 365 4 18 145

200 20 461 4 18 160

220 20 565 8 18 180

250 22 812 8 18 210

285 22 1050 8 22 240

315 24 1410 8 22 270

340 24 1650 8 22 295

395 26 2410 12 22 350

445 26 3080 12 22 400

505 26 3960 16 22 460

565 26 4960 16 25 515

615 26 5860 20 25 565

670 28 7530 20 25 620

PN 10 (UNI 6092)

LegendaDN Nominal DiameterD Flange External Diametert Flange ThicknessW Flange WeightN Hole NumberOslash Hole Diametera Hole axis

PIPING Flange dimensionsPI

PIN

G

Blind flanges to DIN 2527

79wwwpnr-nozzlescomCTG SH 07 EU

LegendDN Nominal DiameterD Flange External Diametert Flange ThicknessW Flange WeightN Hole NumberOslash Hole Diametera Hole axis

12rsquorsquo 889 111 08 4 159 603

34rsquorsquo 984 127 09 6 159 698

1rsquorsquo 1079 143 10 4 159 794

114rsquorsquo 1175 159 13 4 159 889

112rsquorsquo 1270 175 14 4 159 984

2rsquorsquo 1524 190 18 4 190 1206

212rsquorsquo 1778 222 32 4 190 1397

3rsquorsquo 1905 238 41 4 190 1524

312rsquorsquo 2159 238 59 8 190 1778

4rsquorsquo 2286 238 77 8 190 1905

5rsquorsquo 2540 238 91 8 222 2159

6rsquorsquo 2794 254 118 8 222 2413

8rsquorsquo 3429 286 204 8 222 2984

10rsquorsquo 4064 302 318 12 254 3619

12rsquorsquo 4826 317 500 12 254 4318

14rsquorsquo 5334 349 600 12 286 4762

16rsquorsquo 5969 365 770 16 286 5397

18rsquorsquo 6350 397 950 16 317 5778

20rsquorsquo 6985 429 1230 20 317 6350

22rsquorsquo 7493 460 1510 20 349 6921

ANSI 150 lb DN Flange Holes

D t W N Oslash a

952 143 10 4 159 667

1175 159 14 4 190 825

1238 175 18 4 190 889

1333 206 27 4 190 984

1556 222 36 4 222 1143

1651 254 45 8 190 1270

190S 286 68 8 222 1492

209S 317 91 8 222 1683

2286 349 132 8 254 1841

2540 349 150 8 254 2000

2794 381 200 8 254 2349

3175 413 277 12 254 2699

3810 476 450 12 286 3302

4445 540 700 16 317 3873

5207 571 103 16 349 4508

5842 603 141 20 349 5143

6477 635 181 20 381 5715

7112 667 228 24 381 6286

7747 698 282 24 413 6858

8382 730 311 24 444 7429

ANSI 400 lb Dimensions Holes

D t W N Oslash a

ANSI 300 lb Dimensions Holes

D t W N Oslash a

952 143 10 4 159 667

1175 159 14 4 190 825

1238 175 18 4 190 889

1333 190 27 4 190 984

1556 206 32 4 220 1143

1651 222 36 8 190 1270

1905 254 54 8 222 1492

2095 286 73 8 222 1683

2286 302 95 8 222 1841

2540 317 122 8 222 2000

2794 349 159 8 222 2349

3175 365 227 12 222 2699

3810 413 370 12 254 3302

4445 476 580 16 286 3873

5207 508 840 16 317 4508

5842 540 1070 20 317 5143

6477 571 1390 20 349 5715

7112 603 3900 24 349 6286

7747 635 2230 24 349 6858

8382 667 2700 24 413 7429

PIPING Flange dimensions

PIPI

NG

flanges to ANSI norms

80 wwwpnr-nozzlescom CTG SH 07 EU

PIPI

NG

Sieves are used both for determining the particle size distribution of a granular material and to filter solid particles in a liquid Normally the sieve is made with a fabric whose characteristic dimensions areL is the Opening Width (free passage)D is the Diameter of the wireP is the Pitch of the wireS is the Thickness of the fabricTo classify particle sizes there is some Sieve Series according to specific standardsthe most known are Tyler Sieve Series US Sieve Series UK Sieve SerieshellipThe Tyler mesh size indicates exactly the number of openings per linear inch of mesh

L[microm]

TYLER Sieve[Mesh No]

ASTM E11 Sieve[Mesh No]

BS 410 Sieve[Mesh No]

DIN 4188 Sieve[mm]

5 2500 2500 0005

10 1250 1250 0010

15 800 800 0015

20 625 635 625 0020

22 0022

25 500 500 500 0025

28 0028

32 na 450 440 0032

36 0036

38 400 400 400

40 0040

45 325 325 350 0045

50 0050

53 270 270 300

56 0056

63 250 230 240 0063

71 0071

75 200 200 200

80 0080

90 170 170 170 0090

100 0100

106 150 140 150

112 0112

125 115 120 120 0125

140 0140

150 100 100 100

160 0160

180 80 80 85 0180

200 0200

In the german standard (DIN norm 4188) the Opening Width (L) is given in millimeters

PIPING Sieve size conversion chartPI

PIN

G

81wwwpnr-nozzlescomCTG SH 07 EU

L[microm]

TYLER Sieve[Mesh No]

ASTM E11 Sieve[Mesh No]

BS 410 Sieve[Mesh No]

DIN 4188 Sieve[mm]

212 65 70 72

250 60 60 60 0250

280 0280

300 48 50 52

315 0315

355 42 45 44 0355

400 0400

425 35 40 36

450 0450

500 32 35 30 0500

560 0560

600 28 30 25

630 0630

710 24 25 22 0710

800 0800

850 20 20 18

900 0900

1000 16 18 16 1000

1120 1120

1180 14 16 14

1250 1250

1400 12 14 12 1400

1600 1600

1700 10 12 10

1800 1800

2000 9 10 8 2000

2240 2240

2360 8 8 7

2500 2500

2800 7 7 6 2800

3150 3150

3350 6 6 5

3550 3550

4000 5 5 4 4000

4500 4500

4750 4 4 35

5000 5000

5600 35 35 3

6700 3 0265 in 1

8000 25 516 in na

Applicable standards areISO 565 (1987) ISO 3310 (1999) ASTM E 11-70 (1995)DIN 4188 (1977) BS 410 (1986) AFNOR NFX11-501 (1987)

Legend Q Water Flow Rate V Velocity P Pressure drop Pressure drop in bar per 100 meters of straight pipe (water at ambient temperature)

PIPING Sieve size conversion chart

PIPI

NG

Besides its main range of nozzles for industrial applications PNR manufactures a wide range of complementary products and systems to optimize the use of spray jets and fluids control in most of the modern industrial processes

PNR PRODUCT RANGE

CTG AC

CTG LS

CTG UG

CTG AZ

Complementary Products andAssembly FittingsA complete line of nipples clamps swivel joints and everything that helps you to assemble align and service your spraying systems quickly and easilyAir blowers mixing eductors filters clean-ing guns and lances hose reels steam heaters pressure tanks quick couplings to help you build up a professional system upgraded to the latest standards

Tank washing systemsA complete range from simple fixed washing heads to the two-axis heads from mushroom nozzles to fluid driven reaction heads up to the motor driven washing heads equipped with a pneu-matic or electric motorAll for the inside cleaning of industrial tanks according to the latest technology accessories included

Spray nozzles for industrial applicationsOne of the world most complete lines of nozzles for numberless industrial appli-cations Nozzles with a wide openings range various types of vanes several spray patterns anti-clog design available in small and big dimensions and made in many food-grade materials like PFTE and Stainless Steel 316L with threaded and flanged connections

Air assisted atomizersUltrasonic classic and automatic atomiz-ers for the finest atomization in any insus-trial process High quality machining and strict quality control ensure your systems top professional resultsProgramming and control panels for an easy assembly of complete humidification systems

CTG SP

CTG PM

CTG SW

CTG LN

Spraydry nozzlesAir assisted or hydraulic high pressure ato-mizers made in high-quality metal alloys or tungsten carbideA complete line of nozzles for the moder-nization of existing facilities at competitive prices To ensure highly accurate results and a long service life these nozzles are manufactured with the finest materials and technologically advanced machines

Paper mill productsA line of products specifically designed for perfect results on paper mill machines including disc nozzles patented for self-cleaning filters flat jet nozzles with orifices in sapphire ruby and ceramic oscillating tubes equipped with a computer driven motor

Steelwork nozzlesA complete line of nozzles for steelwork applications including continuous casting air atomizers and conventional nozzles descaling nozzles for high pressure sys-tems dovetail tips for cylinders cooling and high capacity flanged nozzles for coke quenching

Gas cooling lancesSpillback or air assited lances for gas coo-ling in steelworks cement plants and other industrial applicationsWe can supply spare parts upgrade your plant and even supply a complete PLC driven system to enhance the towers per-formances to the highest efficiency level allowed by today technology

wwwpnr-nozzlescomCTG SH 07 EU

CTG SH 07 EUwwwpnr-nozzlescom

STAM

PATO

IN E

U 09

09

copy B

ellamp

Tany

Our products are distributed through

We are also represented in

PNR AmericaPNR Asia

PNR BalticPNR Benelux

PNR ChinaPNR Czech Republic

PNR DeutschlandPNR France

PNR ItaliaPNR Mexico

PNR UK

ArgentinaAustraliaAustriaBrazil

BulgariaCanada

ChileCroatia

DenmarkFinlandGreece

IndiaIndonesia

IranIrelandKorea

MalaysiaNorway

New ZealandPakistan

PhilippinesPoland

Portugal

RumeniaRussiaSerbia

SingaporeSlovenja

SpainSouth Africa

SwedenTaiwanTurkey

Venezuela

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