End Feed Fittings - Pegler Yorkshire · 2010. 2. 1. · BS EN 12164Specification for copper and...

End Feed Fittings

Endex general range end feed fittings are availablein sizes from 6mm to 54mm and are designed forjointing copper tube manufactured to BS EN 1057using soft or hard solder (brazing alloy). Endbrazefittings in size 67mm can also be soft soldered.The range is suitable for use on above ground hotand cold domestic water services, in small bore andminibore central heating systems and in low-pressure steam heating and pressurised unventedheating systems. In addition, the Endex generalrange can be used for sanitation services andcompressed air lines, gas distribution systems fornatural and manufactured gases, with fuel oils(hard solder only) and kerosene, and onengineering pipelines services that convey liquids,oils, air and gases at temperatures up to 110°C.For fuel oils, refer to OFTEC advice. Endex fittingsare available degreased and individually bagged foruse on medical gas lines.

Endex general range fittings are manufactured fromcopper, gunmetal or other DZR alloy, with nutssupplied in duplex brass (DZR versions are alsoavailable).

02

At Yorkshire we are constantly striving todevelop jointing solutions that meet thechanging needs of specifiers and installers alike.The Endex suite of end feed fittings comprises anumber of product ranges which suit a broadspectrum of applications across the domesticand commercial sectors.

The principle of the Endex jointThe Endex joint is created through the process ofcapillary attraction. When the fitting and tube areassembled and heated to the correct temperature,solder applied to the mouth of the fitting becomesmolten. Capillary attraction ensures the solder isdrawn into the gap between tube and fitting,forming a sturdy and reliable joint.

Advantages of EndexEndex end feed fittings are a simple and cost-effective method of jointing copper tubes to BS EN 1057. Light and neat, they make handlingand installation easy. The fittings’ compactdimensions make them the ideal choice for use inareas where there is limited space. Additionally,their smooth lines minimise flow restrictions andare unobtrusive on exposed pipelines.

Endex end feed fittings are manufactured fromcopper, gunmetal or other dezincification resistantalloy (DZR).

Users of Endex fittings can be confident that theyare purchasing an established product with aproven reputation for reliability and quality.

Presenting the rangeThe Endex end feed fittings range includes standardline fittings, large size and waste fittings, and anextensive selection of flanges and accessories.

ENDEX - END FEED FITTINGS

The principle of the Endex joint

CONTENTS

A comprehensive subjectindex incorporating pageand paragraph numbers canbe found on page 11 of thisdatabook. Quick-findreference points are asfollows:

StandardsPAGE 04

Tube compatibilityPAGE 05

Working temperaturesand pressuresPAGE 06

Specification clauses PAGE 07

InstallationPAGE 08 - 09

Design considerationsPAGE 10

Subject index PAGE 11

ENDEX - END FEED FITTINGS 03

Available in sizes from 67mm to 219mm, Endbrazelarge sized end feed fittings are designed forjointing copper tubes to BS EN 1057 using hardsolder (brazing alloy). In addition, 67mm fittingscan be soft soldered. The range is suitable for usein hot and cold water services, heating systems,gas installation pipework and many engineeringapplications. Endbraze fittings are availabledegreased and individually bagged for use onmedical gas lines.

Endbraze fittings are manufactured from copper orcopper alloy, with sizes 133mm and abovefabricated from copper components.

The Endbraze range is complemented by bi-metal,gunmetal and slip-on flanges designated PN10, allof which have been designed to aid pipeworkassembly.

Waste fittingsEndex waste fittings in sizes from 35mm to 54mmare designed for use in domestic and commercialwaste systems for connecting basins, baths, sinksand other sanitary appliances. The range includesbends, tees and crosses; and fittings with roddingeyes to enable inspection and maintenance of thepipework. Bends, tees and crosses have beendesigned with built in fall, in line with goodplumbing practice.

AccessoriesThe Endex range of end feed fittings iscomplemented by a range of accessories whichincludes solders, fluxes and tap connector washers.

Traditional Craftsman’s Flux (from the Yorkshirerange) will maintain it’s consistency over a longperiod of time. It has excellent lubricatingproperties, which enables close-fitting joints tobe readily assembled. It can be used with alltypes and sizes of soft solder fittings forapplications including gas, and is char-resistantto normal heating levels of 250ºC.

Yorkshire Flux (from the Yorkshire range), likeTraditional Craftsman’s, will maintain it’sconsistency and can be used with all types andsizes of soft solder fittings. However, it must not be used for gas applications.

Degussa H ready-mixed paste is for brazing copperand copper alloys, such as Endbraze large sizedfittings.

Introducing the Endex range

MARKINGS

UNIVERSAL MARKINGAll dezincification resistantEndex fittings carry thedistinctive mark.

GUNMETALSome Endex fittings andvalves are manufacturedfrom gunmetal and can beidentified by the markon the body.

04

We at Yorkshire are dedicated to designing,developing and manufacturing products of thehighest quality. We are members of numerousstandards committees and take an active partin their development. Endex end feed fittingsall comply with the relevant British, Europeanand International standards. Whatever thelatest developments, we guarantee that ourproducts will always meet the latest andhighest standards.

Our strategy of continuous development means weinvest in both the design and development of newproducts, and in refining existing ones. Ourmanufacturing processes are monitored andevaluated to ensure optimum performance andquality. The Endex range meets the followingstandards:

Endex general rangeWRAS All Endex general range fittings are listedand comply with the requirements of The WaterSupply (Water Fittings) Regulations/Byelaws(Scotland).

BS EN 1254 Part 1 Specification for copper andcopper alloy fittings with capillary ends forsoldering and brazing for use with copper tubes.

BS EN ISO 228 (formerly BS 2779/ISO 228/1)Specification for tubes and fittings where pressuretight joints are not made on the threads (metricdimensions).

BS 7786 Specification for PTFE tape for water andgeneral applications.

BS EN 751-3 (formerly BS 6974) Specification forPTFE tape for gas applications.

Endbraze fittingsWRAS All Endbraze fittings are listed and complywith the requirements of The Water Supply (WaterFittings) Regulations/Byelaws (Scotland).

BS EN 1254 Part 5 Specification for copper andcopper alloy fittings with short ends for capillarybrazing to copper tube.

BS 10 (obsolescent) Specification for flanges andbolting for pipes, valves and fittings.

BS EN 1092-3 (formerly BS 4504 Part 3.3)Specification for copper alloy circular flanges andtheir joints. PN designated.

BS EN 1044 (formerly BS 1845) Specification forfiller metals for brazing.

Endex waste fittingsEndex waste fittings are manufactured to our ownexacting standards.

Material specificationsThe materials used to manufacture Endex end feedfittings meet the following specifications:

BS EN 1982 Specification for copper and copperalloys, ingots and castings.

BS EN 12162 Specification of profiles andrectangular bar for general purposes.

BS EN 12163 Specification for copper and copperalloy rod for general purposes. Including testing fordezincification resistance of alloys CZ121 (CW614N),CZ122 (CW617N) and CZ132 (CW602N).

BS EN 12164 Specification for copper and copperalloy rod for general purposes. Including testing fordezincification resistance of alloys CZ121 (CW614N),CZ122 (CW617N) and CZ132 (CW602N).

BS EN 12165 Specification for copper and copperalloys, wrought and unwrought forging stocks.

BS EN 12168 Specification for hollow rod for freemachining purposes.


Standards and material specifications

KEYWORD IS QUALITY

FM 27630

QUALITY SYSTEMSYorkshire Fittings Ltd is aBritish Standards Institutionregistered company.

EVALUATED BY WRASThe Endex ranges have beencertified by WRAS and areaudited periodically.

INTERNATIONAL STANDARDSORGANISATIONInternational standards areconformed to whereappropriate.


QualityQuality is of paramount importance to Yorkshire.Our products conform to current British, Europeanand International standards where applicable andalso meet our own rigorous internal qualityapprovals.

Yorkshire operates a Quality Management Systemfor the development, manufacture and supply offittings, tube, valves and accessories whichcomplies with the requirements of BS EN ISO 9001:2000.

Tube compatibilityEndex end feed fittings are suitable for jointingcopper tube, which must meet the requirements ofBS EN 1057.

BS EN 1057 Specification for copper and copperalloy – seamless round copper tubes for water (and gas) in sanitary and heating applications.

BS EN 1057 includes specified temper conditions(material strength) expressed as an “R” number.Quite simply, the higher the number, the harder thematerial. As a result, tube diameter, wall thickness,length and the material temper must all bespecified for full product designation.

R220 Annealed condition with a tensile strength of 220N/mm2 supplied in coils and suitable forconnection by push-fit, capillary and compressionfittings. Can be bent with suitable bending tools.

R250 Half hard condition with a tensile strengthof 250N/mm2 supplied in straight lengths andsuitable for connection by push-fit, press-fit,capillary and compression fittings. Can be bentwith suitable bending tools.

R290 Hard condition with a tensile strength of290N/mm2 supplied in straight lengths suitable forconnection by push-fit, press-fit, capillary andnon-manipulative compression fittings. Notsuitable for bending.

Imperial copper tubeEndex end feed fittings with metric or BSP ends are not compatible with imperial copper tube.However, the Endex range includes a number ofimperial x metric adaptors, which are specificallydesigned for the purpose of connecting toimperial copper tube found in an existinginstallation.

Stainless steel tubeThe use of Endex fittings with stainless steel tubeis not recommended.

Guarantees and tube compatibility

GuaranteesOur policy of continuously and rigorously

testing Endex end feed fittings means we are

confident they will give you years of trouble

free service. To demonstrate the total

confidence we have in our products and our

commitment to customer service, all Endex end

feed fittings are guaranteed against

manufacturing defects for 25 years, when

installed in accordance with our instructions

on specified tube materials and applications.

OFTECYorkshire recommendscontacting OFTEC for fuel oils advice.www.oftec.co.uk

CONTACT WITH THE TRADEYorkshire is an industrialassociate of the Institute ofPlumbing & HeatingEngineeringwww.iphe.org.uk

LINKS WITH MERCHANTGROUPSIndustry trends can bemonitored through the BMF.www.bmf.org.uk

LINKS WITH END USERGROUPSThe Company is a member ofthe Association of Plumbingand Heating Contractors.www.aphc.co.uk

REGIONAL LINKSAssociation with regionalbodies like SNIPEF also helpsto monitor a broad picture ofthe industry. www.snipef.org

TRADE BODIES

BS EN 1057 copper tube specifications compatible with Endex end feed fittings

Outsidediameter 0.6mm 0.7mm 0.8mm 0.9mm 1.0mm 1.2mm 1.5mm 2.0mm 2.5mm6mm R220/R250 R220/R2508mm R220/R250 R220/R25010mm R250 R220 R220/R25012mm R250 R220/R25015mm R250 R220/R25022mm R250 R220/R25028mm R250 R220/R25035mm R290 R250 R25042mm R290 R250 R25054mm R290 R250 R25067mm R250/R290 R25076mm R290 R250108mm R290 R250133mm R290159mm R290

Wall thickness

Working temperatures and pressuresEndex general range fittingsEndex general range end feed fittings can beassembled using a variety of soft or hard solders(brazing alloy). Their working temperatures andpressures vary according to which solder has beenused. When correctly assembled with copper tubeto BS EN 1057, the applicable temperatures andpressures are indicated in Tables 1 and 2 on thispage, and Table 1 apposite.

Endbraze fittingsEndbraze fittings should be assembled with silverbrazing alloys to BS EN 1044 (formerly BS 1845).When correctly assembled with copper tube to BS EN 1057, Endbraze fittings are designed for theworking temperatures and pressures shown in Table 2 opposite. Please contact us for performanceinformation for Endbraze 219mm fittings.

FlangesEndbraze flanges are designed for assembly withsilver brazing alloys to BS EN 1044 (formerly BS 1845). When correctly assembled with coppertube to BS EN 1057, they perform at thetemperatures and pressures shown in Table 3.

Achieving low temperaturesFor products used in water systems, workingtemperatures of less than 4°C can only beachieved if antifreeze is added to the system.Antifreeze must not be added to potable watersystems.

High performanceEndex end feed fittings used with copper tubeto BS EN 1057 will withstand pressure ratingsnever reached under normal service conditions.

06 ENDEX - END FEED FITTINGS

Working temperaturesand pressures

PRESSURE EQUIPMENTDIRECTIVE (P.E.D.)

From 30th May 2002 mostpressure equipment andassemblies on the market inthe United Kingdom mustcomply with the PressureEquipment Directive (P.E.D.)1999. Fittings are exemptfrom the P.E.D. unless theyare incorporated intopressure equipment, such aspressurised storagecontainers, heat exchangers,shell and water tube boilers.This means that all Endexend feed fittings are exempt.

For a detailed explanation ofthe P.E.D. visit our websitewww.yorkshirefittings.co.uk

There are three gas families:• 1st Family – manufactured

gas.• 2nd Family – natural gas.• 3rd Family – LPG,

compressed propane andbutane.

GAS FAMILIES

Endex (and Endbraze 67mm) performance when correctly assembled with copper tube to BS EN 1057 using tin/copper soft solder BS EN 29453 S-Sn99Cu1 or tin/silver soft solder BS EN 29453 L-SnAg5 DIN 1707

6mm to 28mm 25 bar 25 bar 25 bar 16 bar


67mm 16 bar 16 bar 16 bar 10 bar

Service temperatureMin Max

Size -40°C 30°C 65°C 110°C

Endex (and Endbraze 67mm) performance when correctly assembled with copper tube to BS EN 1057 using tin/lead soft solder BS EN 29453 D-Pb60Sn40 Not suitable for use in potable water systems


67mm 10 bar 10 bar 6 bar 4 bar


Size -15°C 30°C 65°C 110°C

Endbraze flange performance when correctlyassembled with copper tube to BS EN 1057 with silver brazing alloy to BS EN 1044 Ag103(formerly BS 1845 Ag14)

42mm to 219mm 10 bar 8.5 bar


Size 180°C 200°C

Ensure all metallic pipeworksystems comply with theequipotential bondingrequirements of the currentedition of the IEE electricalwiring regulations (BS 7671:2001).

All Endex end feed fittingsprovide electrical continuitywhen the joint has beencompleted with copper tube.

After all plumbing work hasbeen completed, alwaysensure continuity checks areconducted by a qualifiedelectricaln in accordancewith regulations.

EQUIPOTENTIALBONDING


Specification clausesOnce the appropriate Endex product has been selected, the use of one of the followingspecification clauses will provide the exact wording required to ensure the correct product is used. All clauses can becopied from our website,www.yorkshirefittings.co.uk

Endex general range specification“End feed fittings shall be to BS EN 1254 Part 1,

of copper, gunmetal or other DZR alloy, and

certified by WRAS. In sizes from 6mm to 54mm

they will be suitable for use with copper tube to

BS EN 1057 in hot and cold water services, central

heating systems, fuel services and general

engineering applications. They will have a

guarantee of 25 years against all manufacturing

defects, and be drawn from the Endex general

range manufactured by Yorkshire.”

Performance andspecification clauses

Maximum hydraulic working pressure for Endex fittings when assembled with copper tube to BS EN 1057using hard solder (brazing alloy) to BS EN 1044 (formerly BS 1845)*

Service temperatureMin† Max

Size -196°C 65°C 120°C 150°C 175°C 200°C

6mm 81.1 bar 81.1 bar 76.2 bar 60.5 bar 46.0 bar 30.3 bar










67mm 18.6 bar 18.6 bar 17.5 bar 14.0 bar 6.9 bar





Endbraze performance when correctly assembled with copper tube to BS EN 1057 with silver brazing alloy to BS EN 1044 (formerly BS 1845)

Service temperatureMin† Max

Size -196°C 65°C 120°C 150°C 200°C

* Not applicable to products containing non-metallic components. † Copper and gunmetal fittings only.

WASHERS

Where tap connectors orother fittings are assembledwith washers, servicetemperatures must notexceed 100°C. Washers arenot suitable for use on gasservice pipelines.

UK SPECIFICATIONFirst quote the ends on therun (larger end first) andthen the branch.

EUROPEAN SPECIFICATIONQuote the larger end first,then the branch, followed bythe remaining end.

TEE SPECIFICATION

Endbraze fittings specification“End feed brazing fittings shall be to BS EN 1254

Part 5, of copper or copper alloy and certified

by WRAS. In sizes from 67mm to 219mm they

will be suitable for use with copper tube to

BS EN 1057 in hot and cold water services,

heating systems, gas service pipework and many

engineering applications. They will have a

guarantee of 25 years against all manufacturing

defects, and be drawn from the Endbraze range

manufactured by Yorkshire.”

Endex waste fittings specification“End feed waste fittings shall be of copper or

copper alloy. In sizes from 35mm to 54mm they will

be suitable for use with copper tube to BS EN 1057

for sanitary and waste applications. They will have

a guarantee of 25 years against all manufacturing

defects, and be drawn from the Endex waste fittings

range manufactured by Yorkshire.”

Allow the joint to cool without disturbance.Clean the joint generally, wiping off any externalflux residues. This will prevent unsightly stains or(in extreme cases) corrosion of pipework. Flush outthe pipework.

Apply solder to the mouth of the fitting. Whenthe correct temperature has been reached thesolder will flow freely and be drawn into the joint.Briefly reapply the blowtorch and wipe off anyexcess solder.

Insert the tube into the fitting until it reachesthe tube stop, then wipe off any excess flux. Heatthe assembled joint evenly on all sides.

Remove any burrs from the inside and outside ofthe tube ends using a fine toothed file or a S120deburring tool from the XPress accessories range.

Clean the inside of the fitting socket and theoutside of the tube with a Yorkshire cleaning pad,fine sandpaper or steel wool.

Jointing – soft solderUsing a suitable brush, apply adequate – but

not excessive – flux to both the outside of thetube and the inside of the fitting socket. Do notuse your finger.

08

The following instructions illustrate just howeasy it is to make an Endex end feed joint. Thefittings use the principle of capillary attractionto allow solder to fill the gap between fittingand tube to form a completely reliable joint.

Endex general range fittingsThe reliability of soft soldered joints is greatlyinfluenced by the type of flux used. Yorkshire fluxand Traditional Craftsman's flux are speciallyformulated for jointing copper tubes with Endexend feed fittings. All fluxes are to some extent,corrosive, but special care should be taken with so-called self cleaning fluxes.

PreliminariesSelect the correct size of tube and fitting for thejob. Ensure that both are clean, in good conditionand free from damage and imperfections. If thetube is oval or damaged, use a re-rounding tool.

PreparationCut the tube square using a rotary tube cutter

wherever possible. If a hacksaw is used to cut thetube, a fine toothed blade should be used.


Installation instructionsfor soft solder

FLUXES

Yorkshire Flux, TraditionalCraftsman's Flux andDegussa H high duty flux aresubject to the requirementsof the Control of SubstancesHazardous to Health(COSHH) regulations. COSHHsheets are available todownload from our website,www.yorkshirefittings.co.uk

THREADED CONNECTORS

Jointing compounds shouldcomply with BS 6956 Part 5and be WRAS listed. PTFEtape for water and generalapplications should complywith BS 7786 and satisfythe requiements of BS 6920Part 1. For gas applications,PTFE tape should complywith BS EN 751-3 (formerlyBS 6974).

Female threaded connectorshave internal threads to BS EN ISO 228 and shouldbe used for generalconnections from malethreaded fittings to copperpipework.

Male threaded connectorshave taper male BSP threadsand may require the use ofjointing materials. Completethe soldering operation,then apply a WRAS listedjointing compound or PTFEtape to the threads. Wheninstalling fittings withparallel connector threads, agood quality jointing washershould be used.

HEATING DZR BRASS

The corrosion resistance ofDZR brass can be adverselyaffected by heating totemperatures in excess of400°C. Care should be takenwhen using hard solder toavoid over heating DZRcomponents.

UNION FITTINGS

Union fittings have metal-to-metal cone joints to BS 1010. Avoid damagingthe mating faces and, ifrequired, apply a WRASlisted jointing compound orPTFE tape. Tighten the jointwith a spanner.

1.

1.

2.

3.

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3.

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4.

Unmade endsIf one or more ends of an Endex fitting are toremain unmade, a short length of correctly sized, uncleaned tube should be inserted into the unjointed end. Keep this section cool bywrapping a wet rag around it while heating theremaining end.

Taking apart and remaking Endex jointsRemaking of Endex general range joints is generallynot recommended. However, in some situations,joints can be remade by fluxing the tinned portionof the tube and reinserting this into the fitting.Then, heat the joint and end feed the solder. If anew tube is to be used, clean and flux the tubebefore assembly.

If it is necessary to break into existing pipes forrepairs or to fit new branches, slip couplings ortees which have no tube stops make the job easierand avoid disturbing the rest of the system.

Adapting imperial to metric with EndexEndex general range fittings can be easilyconnected to older imperial sized tube installationsthrough the use of an Endex imperial to metricadaptor coupling. One end of the adaptor fits ontoimperial pipe and the other onto metric pipe.Adaptors are available in a variety of sizecombinations.

Brazing alloy (hard solder) installation –Endex general range and EndbrazeThe same preliminaries and preparation guidelinesapply as for soft soldering.

Blowtorches and their useFor brazing joints, an oxy-propane, oxy-acetyleneor other torch with a large soft, neutral or slightlyreducing flame should be used. This should be keptmoving throughout the making of the joint toavoid excessive local heating. It is better to meltthe alloy by conduction than by heating it directlywith the torch, although a combination of the twotechniques can be used to aid the flow of alloyinto the joint. The gap between the socket and thetube should be filled with the brazing alloy toleave a small, uniform bead of this alloy aroundthe mouth of the socket.

Jointing – brazing alloyFollow steps 1 and 2 (Jointing – soft solder) if theuse of a flux is required. Continue jointing as perthe instructions given here in points 3 to 5.

Apply the filler rod to the mouth of the fitting,allowing the brazing alloy to melt and flow intothe annular gap.

Allow the joint to cool without disturbance.Clean the joint generally and flush out thepipework.

Use of flux with brazing alloysRefer to Table 1 below for details of which fittingsand brazing alloys require the use of a flux. Whererequired, Yorkshire recommends Degussa H readymixed flux.

Heat the assembled joint evenly on all sides to700-750°C (red heat in poor daylight).

Installation instructionsfor brazing alloys

3.

4.

5.

We recommend all systemsare thoroughly tested uponcompletion. In hydraulicbased installations thesystem may be tested to 1.5 times the workingpressure of the system (seetables on pages 6 and 7 fordata). If higher testpressures are requiredadvice should be soughtfrom Yorkshire Fittings.

On completion, compressedair pipeline systems must beproperly tested. The systemdesigner and installationcontractor must ensure safemethods are selected forsystem testing which willcomply with all currentHealth and Safetyregulations.

This may include testingcompressed air lines withfluids or compressed air at alimited pressure, or acombination. In any eventwe do not recommend themaximum working pressureof the product be exceededduring this procedure.

N.B. The maximumtemperature and pressurerange in any system isdictated by the componentwith the lowest performancerating.

SYSTEM TESTING

Type of brazing alloys

Tube to fitting

Copper/phosphorous brazing alloyto BS EN 1044 CP104, CP105(formerly BS 1845 CP4, CP2)

Silver brazing alloy to BS EN 1044 Ag103

(formerly BS 1845 Ag14)

Copper to copper No flux Flux

Copper to gunmetal Flux Flux


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4.

5.

10ºC 0.5mm 0.7mm 0.9mm 1.0mm 1.2mm 1.4mm 1.5mm 1.7mm 2.0mm 4.3mm20ºC 1.0mm 1.4mm 1.7mm 2.0mm 2.4mm 2.7mm 3.0mm 3.4mm 4.0mm 8.5mm30ºC 1.5mm 2.0mm 2.6mm 3.1mm 3.6mm 4.1mm 4.6mm 5.1mm 6.1mm 13mm40ºC 2.0mm 2.7mm 3.4mm 4.1mm 4.8mm 5.4mm 6.1mm 6.8mm 8.2mm 17mm50ºC 2.6mm 3.4mm 4.3mm 5.1mm 6.0mm 6.8mm 7.7mm 8.5mm 10.2mm 21mm60ºC 3.1mm 4.1mm 5.1mm 6.1mm 7.1mm 8.2mm 9.2mm 10.2mm 12.2mm 26mm70ºC 3.6mm 4.8mm 6.0mm 7.1mm 8.3mm 9.5mm 10.7mm 11.9mm 14.3mm 30mm80ºC 4.1mm 5.4mm 6.8mm 8.2mm 9.5mm 10.9mm 12.2mm 13.6mm 16.3mm 34mm90ºC 4.6mm 6.1mm 7.7mm 9.2mm 10.7mm 12.2mm 13.8mm 15.3mm 18.4mm 38mm100ºC 5.1mm 6.8mm 8.5mm 10.2mm 11.9mm 13.6mm 15.3mm 17.0mm 20.4mm 43mm

recommends that such insulation products beinstalled with a moisture barrier, such asDensopaste or a plastic covering applied by thetube manufacturer.

If you need to add a barrier product, werecommend that all Endex fittings are fullyinstalled and are completely coated before theseare applied.

Thermal movementThermal movement is major consideration whendesigning and installing plumbing and heatingsystems and should be taken into account.

Pipework systems expand and contract with changesin temperature. If they are fixed too rigidly andtheir movement restricted the installation will besubject to stress. Stress concentrations between“fixed points” – typically found at radiators, valvesand other fittings – should be avoided whereverpossible.

Expansion of copper tubeCopper has a coefficient of linear expansion of 17 x 10-6/°C. For example, a 10 metre length ofcopper tube carrying hot water at 60°C will increasein length by almost 7mm when heated from 20°C.Assuming that temperature cycling of the system is20°C, there will be a continuous cycle of expansionand contraction of 3.4mm. Refer to Table 2.

Covered pipeworkMaking provision for thermal movement is vitalwhere pipework is installed under screed or plaster,or passes through brick or blockwork.

The preferred practice is to pass tubes and pipesthrough sleeves or conduits or to lay them in ductssurrounded by loose, non-rigid material such asvermiculite or glass wool. For further information,consult the standard BS 6700.

Pipework accessibilityIt's wise to take advice from the local waterauthority when it comes to pipework accessibility.

10

Here are details of some of the specific designconsiderations it is important to take account ofwhen designing and installing pipework systemscontaining Endex fittings.

Pipeline supportsPipelines should always be assembled so that thejoints are under neutral or compressive stress.Clipping to support the assembled pipeline isessential and tube manufacturer’s recommendationsshould be adhered to. Yorkshire offers a widerange of pipe clips and brackets to ensure safe andsecure installations. Pipe joist clips are alsoavailable and are designed to protect pipeworkagainst accidental piercing when nailing orscrewing down floorboards. For the maximumspacing of supporting brackets refer to Table 1.

InsulationFor all Endex installations, we recommend youadhere to the insulation requirements for coppertube as specified by The Water Supply (WaterFittings) Regulations 1999. These can bedownloaded from www.hmso.gov.uk.

Phenolic foamWhen using rigid phenolic foam (or other thermalinsulation) to lag pipework, always remember to referto the lagging manufacturer’s fixing instructions. To avoid the risk of external corrosion of pipework,the European Phenolic Foam Association


System design considerations

Temperature Tube lengthchange 3m 4m 5m 6m 7m 8m 9m 10m 12m 25m

6mm 0.6mm 0.40m 0.60m8mm 0.6mm 0.60m 0.90m10mm 0.6mm 0.80m 1.20m12mm 0.6mm 1.00m 1.50m15mm 0.7mm 1.20m 1.80m22mm, 28mm 0.9mm 1.80m 2.40m35mm, 42mm 1.2mm 2.40m 3.00m54mm 1.2mm 2.70m 3.00m67mm 1.2mm 3.00m 3.60m76mm, 108mm 1.5mm 3.00m 3.60m

Wall Horizontal Vertical Size thickness pitch pitch

Maximum spacing of support brackets forcopper tube to BS EN 1057 R250 and R290

Copper tube expansion

Some contracts may requirethe use of proprietarychemicals to cleanse andflush pipework before fullcommissioning. Endex iscompatible with a selectionof products – contact us tofind out more.

CHEMICALS

Always ensure the freelength of tube between thebranch of the tee and thefirst anchor point (bracketor radiator valve) is longenough to allow normalthermal movement. Notdoing this can lead toinstallation failure.

CORRECT ANCHORING

Horseshoe expansion link

Offset

Crossover tee arrangement

Expansion loopSuitable for 10mm tubeonly.

TECHNIQUES FOREXPANSION STRESS

RELIEF


Endex range data finder

Electrical continuityEndex general range fittings

ApplicationsInstallationOverviewPerformance

Remaking jointsSpecificationStandards

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2826667974

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E PAGE SECT

Degreased

DZR

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Central heatingChemicalsClauses (specification)Compatibility (tube)Compressed airCopper tube

BS EN 1057CompatibilityExpansion

R220R250R290ImperialPerformancePreparationSupport brackets

Covered pipework

210752

5510105555581010

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C PAGE SECT

BlowtorchesBrazing alloy

British standards

9994

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AccessoriesAdvantagesAnchoring pipeworkAntifreezeApplications

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MarkingsMaterialsMaterial specifications

BS 12162BS 12163BS 12164BS 12165BS 12168BS EN 1982

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Jointing 89

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Imperial adaptorsInstallation

InsulationISO

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Hot and cold water 23

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Gas

Gas familiesGuaranteesGunmetal

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Flanges

Flux

Craftsmans fluxDegussa HYorkshire flux

Fuel oil

366893332

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F PAGE SECT

Endbraze fittingsApplicationsInstallationOverviewPerformance

SpecificationStandards

Engineering

Equipotential bondingEuropean standardsExpansion, thermal

Expansion stress relief

39367742364101010

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WashersWaste fittings

7347

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W PAGE SECT

Water AuthorityWater Supply Regulations 1999

Working temperaturesand pressuresWRAS

104

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kig

bfk

Union fittingsUnmade ends

89

fa

U PAGE SECT

Taking apartTee specificationTemperatures (service)Testing (system)Thermal movementThreaded connectorsTrade bodies

APHCBMFIPHEOFTECSNIPEF

TubeTube expansion

976910855555551010

bfgilclnmlpodn2

T PAGE SECT

SanitationSilver brazing alloySpecification clausesSpecification of teesStainless steel tubeStandards

BritishBS 10BS 7786BS EN 1044BS EN 1092-3BS EN 1254 Part 1BS EN 1254 Part 5BS EN 29453BS EN 751-3BS EN ISO 228

Steam pipelinesStress reliefSupport brackets

System testing

39775

444444464421010109

dhafk

amiongl1jhfbh1i

S PAGE SECT

Remaking joints 9 b

R PAGE SECT

Quality 5 a

Q PAGE SECT

PerformancePhenolic foamPipeline supports

Pipework, coveredPressure EquipmentDirective (P.E.D.)PressuresPTFE

6101010106

68

gjh1oa

gc

P PAGE SECT

OFTEC

Oil

252

fpf

O PAGE SECT

Use the index to find theprecise location of specificinformation about theEndex range. Pages,paragraphs, and tables arenumbered or letteredthroughout the document to help you find the detailyou require.

End Feed Fittings

The perfect commercial partnership

Pegler is an expert in theproduction of Taps, Mixers

and Valve products. It boastsan unrivalled track record forintegrity, quality, reliability

and innovation.

LUXURY TAP SOLUTIONS

HEATING CONTROLS

VALVES AND FITTINGS

UTILITY TAP SOLUTIONS

For further information, please contact your appropriate Sales Office

HEAD OFFICE SALESTelephone: 0113 270 6945 / 0113 272 5380

Fax: 0113 270 5644 / 0113 272 5385

NORTHERN IRELANDTelephone: 028 9070 6990

Fax: 028 9070 6999

EXPORTTelephone: +44 (0) 113 270 1104

Fax: +44 (0) 113 271 6250

Email: [email protected]

Yorkshire Fittings Limited, Haigh Park Road, Stourton, Leeds, West Yorkshire, LS10 1RT, England.

www.yorkshirefittings.co.uk

Registered Company No. 00401507. Place of Registration: England

All brand names and logo styles are registered trademarks.

Maintaining a policy of continual product development, Yorkshire Fittings Ltd reserve the right to change specifications,

design and materials of products listed in this databook without prior notice. LIT.REF: 880299/30003.02.07

INTEGRAL SOLDER RING FITTINGS

END FEED FITTINGS

COMPRESSION FITTINGS

COMMERCIAL VALVES

THE PRESS-FIT JOINTING SYSTEM

THE PUSH-FIT JOINTING SYSTEM

Yorkshire is a specialist in the production of metal

plumbing and heating fittings.It has an established

reputation for manufacturingquality products.

Date post:	08-Mar-2021
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End Feed Fittings - Pegler Yorkshire · 2010. 2. 1. · BS EN 12164Specification for copper and...

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