222 wwwbrandoniit
DRINKING WATER
Reg
ulat
ion
Needle valve
Application fields
Serie 14000
WATER
wwwbrandoniit 223
Construction and testing norms (correspondences)
Flanges EN1092Testing EN12266 (ISO 5208)
25 1
3 4
Anti-cavitation device
Standard slotted cylinder (K20 K50 K100 K150)
are available with increasing anti-cavitation
resistance characteristics and head losses
1 Face-to-face not standardized
2 Internal and external epoxy coating approved for contact with drinking water minimum thickness 200 microm
3 Theinternalhydrodynamicprofileandthe pressure equalization in the piston housing allow precise and stable regulation even when the pressure is high and the operating torque is low Absence of vibrations and noise
4 All parts move on self-lubricating bronze bushes which prevents galling and achieves reliability even after a long period of inactivity
5 Flange in accordance with ISO 5211 equipped with gearbox (standard) ndash possibility of electric actuator mounting
Accessories
Serie 14000
Reg
ulat
ion
TheneedlevalveismainlydesignedforwaterflowregulationinapipelineTheflowregulationisachievedbytheaxial
movement of a piston which is operated by a rod and crank mechanism
Thepistonreducestheflowbyclosingintheflowdirectionandoperatesinahousingwithequalizedpressurethisallows
the valve to operate in a stable and smooth manner without vibrations and with a low operating torque The regulation is
achieved with high head losses when the valve is less than 40 open and very low head losses when the valve is more
than 50 open
YES for shut-off operation and for discharge to the atmosphere with high pressure differentials
The valves are suitable for all kinds of water plants Available for pressures up to 64 bar
All sizes (DN) are supplied with a gearbox
If necessary (because of the operating conditions) the shutter can be equipped with a stainless steel slotted cylinder (anti
cavitation device) which allows modulation of the energy dissipation thereby achieving greater resistance to cavitation
andmodificationoftheregulatingcurveofthevalvetomeettherequirementsoftheplant
Actuators
Gear box (standard)
Electric actuators
224 wwwbrandoniit
Needle valve
Reg
ulat
ion
6
5
9
13
1210
3
2
4
8
11
1 7 B1
H1
Art
14
000
ridu
tto
re m
an
ua
leA
rt 1
400
0 a
ttu
ato
re e
lett
rico
A
H
V
B
C
140
00 -
gea
r b
ox
140
00 -
ele
ctri
c ac
tuat
or
wwwbrandoniit 225
Reg
ulat
ion
Serie 14000Materials
123456789
1011121314
Component
BodyCrankShutterSeal ringSeal retaining ringOperating shaftRodWrist pinBushRailsMain sealLipsealO-ringBolts and nuts
Material
EN GJS 400-12 Carbon steel Carbon steel Fe 360 B nickel platedAISI 304AISI 304AISI 304AISI 420AISI 420AISI 420BronzeBronzePTFENBRNBRStainless steel
Dimensions (mm)
DN 80 100 125 150 200 250 300 400 450 500 600A Not standardized 260 300 325 350 400 450 500 600 650 700 800H 200 200 220 220 220 260 260 260 260 260 300B With gear box 180 190 200 230 230 260 290 340 380 410 580V 200 200 200 200 200 200 200 200 200 200 500H1
With electric actuator320 320 320 380 380 420 420 420 480 480 500
B1 400 420 430 460 460 500 500 550 650 700 800EN1092 PN16 200 220 250 285 340 405 460 580 640 715 840
C EN1092 PN25 200 235 270 300 360 425 485 620 670 730 845EN1092 PN40 200 235 270 300 375 450 515 660 685 - -EN1092 PN64 215 250 295 345 415 470 530 670 - - -
kg With gear box 35 45 50 75 130 150 200 350 400 550 960kg With electric actuator 40 50 60 85 140 165 230 380 450 610 1020
Weight (kg)
226 wwwbrandoniit
Needle valve
Reg
ulat
ion
Temperature min deg C MaxdegC
2 40
Maximum pressure Temperature
Article
14000 PN16
14000 PN25
14000 PN40
14000 PN64
Bar
16 bar
25 bar
40 bar
64 bar
Selection of the valves and operation limits-Maximumspeedofthefluidlt7ms(NBthediameterDNoftheneedlevalveisdeterminedaccordingtotherequired
operatingconditionsandnotnecessarilycoincideswiththediameterofthepipingUsethespeedndashflowchartandselect
preliminarilytheDNofthevalverespectingthemaximumlimitoftheflowspeedCheckthatheadlossesofthevalveare
compatible with the selected diameter If not choose a higher DN)
- Opening angle of the needle valveregulation valve 10divide90
- Check the cavitation behaviour as described in the section ldquoCavitationrdquo
Speed - flow chart
max
10 0001001
ms
2
3
4
5
10
1mch
500
600
250
300
400
200
125
150
100
80 450
7
wwwbrandoniit 227
Reg
ulat
ion
Serie 14000
Theheadlosscoefficient(ξ) relative to the opening percentage for the standard valve and for the versions equipped with
anti-cavitation device is shown in the following chart
Head losses for standard valve 100 opening Fluid water (1m H2O = 0098bar)
Opening
Std
K20
K100K50
10
100
1000
10000
130 4010 20 6050 70 800 10090
K150
10
8
65
4
3
2
m H2O
mch100010 1001
80 100
150
125
200
400
300
250
600
500
450
Kv - DN chart DN 80 100 125 150 200 250 300 400 450 500 600Kv mch 99 154 154 347 615 958 1410 2798 3140 3836 5484
The head losses in all kind of position might be calculated with the following formula
ΔP=PinndashPout=(Q )2
ΔP=PinndashPout=ξ ( v2 ) Kv
2g
DP Pin Pout (bar) pressure head losses Q (m3h) flowrateKv (m3h) flowratecoefficientξ headlosscoefficientv (ms) flowspeedg=981 (ms2) acceleration of gravity
NOTE Std=curveforstandardvalve(withoutanti-cavitationdevice)
K20K50K100K150=curverelativetovalveequippedwithanti-cavitationdevice
228 wwwbrandoniit
Needle valve
Reg
ulat
ion
Cavitation
Thespeedofthefluidvariesasitpassesthroughthevalvereachingthehighervaluesnearthevalveseat(duetothe
flowsectionrestrictionakavenacontracta)Thiscausesthestaticpressuretodecreaseandthedecreaseisgreaterthe
higherthedifferentialpressureΔPacrossthevalve
InthecaseofahighΔPacrossthevalvethestaticpressureintherestrictioncanfallbelowthevapourpressureofthe
liquid and vapour bubbles will be formed
Whenthefluidleavesthevenacontractatheflowspeeddecreasesthestaticpressureincreasesandthevapourbubbles
implode During this implosion process high energy is released in a localized volume producing pressure waves that cause
noise vibrations and erosion of the valve and pipe walls In the needle valve implosion takes place at the centre of the
valve far from the walls This gives the needle valve an intrinsic resistance to cavitation
To enhance cavitation resistance in the presence of extremely high pressure drops valves can be equipped with an anti-
cavitation device (slotted cylinders that increase energy dissipation)
In order to check if the working conditions are at risk of cavitation and if an anti-cavitation is required it is possible to
compare the cavitation index σ with the critical value σc from the following formula
In case σ lt σc no cavitation exists
02
08
0 100
10
04
10 403020
12
06050 8070
14
06
16
90
Opening
18
K150
K100
K50
K20
Std
σ=
ΔP+ v2
2g
Pout + Pa - Pv( ) ΔP (mH2O) Headlossacrossthevalve(ΔP=Pin-Pout)Pout (mH2O) Downstream pressure Pv (mH2O) Vapour pressure (02 mH2O for water at 10degC) Pa (mH2O) Absolute pressure (10 mH2O)
wwwbrandoniit 229
Reg
ulat
ion
Serie 14000
14000
Body EN GJS 400 or welded steelEpoxy coatingPN 10-16-25-40-64Temp +2 to +40 degC
Versions
Coating RAL 5005 colour
The information provided here is delivered with each product and contains ldquoInstructions for use and maintenancerdquo it is also available on our website wwwbrandoniit (download section)
STORINGKeep in a dry and closed placeNB handle the valve using belts (ISO 4878) or eye bolts if present in any case it is forbidden to lift the valve at the gearbox actuator
MAINTENANCEThanks to the design features and construction characteristics the needle valve does not require periodic maintenance Also the construction of the gear boxactuator does not require lubrication or other maintenanceNB for any necessary intervention on the valve it is absolutely essential to remove the valve from the piping
RECOMMENDATIONSBefore carrying out any maintenance or dismantling the valve-ensurethatthepipesvalvesandfluidshavecooleddown-thatthepressurehasdecreasedandthatthelinesandpipeshavebeendrainedincaseoftoxiccorrosiveinflammableor caustic liquidsTemperatures above 50degC and below 0degC might cause damage to people
INSTALLATION
- Handle with care- Ensure that there are no parts left in the piping such as welding residues plastic parts mounting residues It is recommen-dedthatthepipingbecleanedflushedcarefullybeforethevalveisinstalled-Ifthefluidcontainsalotofresidues(sandsmallstonesetchellip)ensurethatasuitablefilterisinstalledupstreamofthevalveFurthermore it is recommended that a suitable dismantling joint be installed in order to facilitate installationdisassemblingmaintenance-Leaveasuitablespacearoundthevalvetoenablemaintenanceworkandcommissioning- Freezing of the water inside the valve causes irreparable damage In risky environments provide suitable insulation of the valve or ensure that it is drained- It is recommended that a manometer be installed upstream and downstream of the valve in order to check that the pressures are compatible with the characteristics of the valve -PlacethevalvebetweentheflangesofthepipingandinstallthesealbetweenthepipeandvalveflangesCheckthatthesealshavebeenpositionedcorrectlyThedistancebetweenthecounterflangesmustbeequaltothevalversquosfacetofacedistanceDonotuseboltsofthecounterflangestobringthepipingclosetothevalveTightentheboltscrosswise-Donotweldtheflangestothepipingafterinstallingthevalve- Water hammers might cause damage and ruptures Inclination twisting and misalignments may subject the installed val-ve to excessive stresses It is recommended that elastic joints be used in order to reduce such effects as much as possible
NBThevalveisunidirectionalrespecttheflowdirectionindicatedbythearrowonthebody
Instructions and Recommendations
wwwbrandoniit 223
Construction and testing norms (correspondences)
Flanges EN1092Testing EN12266 (ISO 5208)
25 1
3 4
Anti-cavitation device
Standard slotted cylinder (K20 K50 K100 K150)
are available with increasing anti-cavitation
resistance characteristics and head losses
1 Face-to-face not standardized
2 Internal and external epoxy coating approved for contact with drinking water minimum thickness 200 microm
3 Theinternalhydrodynamicprofileandthe pressure equalization in the piston housing allow precise and stable regulation even when the pressure is high and the operating torque is low Absence of vibrations and noise
4 All parts move on self-lubricating bronze bushes which prevents galling and achieves reliability even after a long period of inactivity
5 Flange in accordance with ISO 5211 equipped with gearbox (standard) ndash possibility of electric actuator mounting
Accessories
Serie 14000
Reg
ulat
ion
TheneedlevalveismainlydesignedforwaterflowregulationinapipelineTheflowregulationisachievedbytheaxial
movement of a piston which is operated by a rod and crank mechanism
Thepistonreducestheflowbyclosingintheflowdirectionandoperatesinahousingwithequalizedpressurethisallows
the valve to operate in a stable and smooth manner without vibrations and with a low operating torque The regulation is
achieved with high head losses when the valve is less than 40 open and very low head losses when the valve is more
than 50 open
YES for shut-off operation and for discharge to the atmosphere with high pressure differentials
The valves are suitable for all kinds of water plants Available for pressures up to 64 bar
All sizes (DN) are supplied with a gearbox
If necessary (because of the operating conditions) the shutter can be equipped with a stainless steel slotted cylinder (anti
cavitation device) which allows modulation of the energy dissipation thereby achieving greater resistance to cavitation
andmodificationoftheregulatingcurveofthevalvetomeettherequirementsoftheplant
Actuators
Gear box (standard)
Electric actuators
224 wwwbrandoniit
Needle valve
Reg
ulat
ion
6
5
9
13
1210
3
2
4
8
11
1 7 B1
H1
Art
14
000
ridu
tto
re m
an
ua
leA
rt 1
400
0 a
ttu
ato
re e
lett
rico
A
H
V
B
C
140
00 -
gea
r b
ox
140
00 -
ele
ctri
c ac
tuat
or
wwwbrandoniit 225
Reg
ulat
ion
Serie 14000Materials
123456789
1011121314
Component
BodyCrankShutterSeal ringSeal retaining ringOperating shaftRodWrist pinBushRailsMain sealLipsealO-ringBolts and nuts
Material
EN GJS 400-12 Carbon steel Carbon steel Fe 360 B nickel platedAISI 304AISI 304AISI 304AISI 420AISI 420AISI 420BronzeBronzePTFENBRNBRStainless steel
Dimensions (mm)
DN 80 100 125 150 200 250 300 400 450 500 600A Not standardized 260 300 325 350 400 450 500 600 650 700 800H 200 200 220 220 220 260 260 260 260 260 300B With gear box 180 190 200 230 230 260 290 340 380 410 580V 200 200 200 200 200 200 200 200 200 200 500H1
With electric actuator320 320 320 380 380 420 420 420 480 480 500
B1 400 420 430 460 460 500 500 550 650 700 800EN1092 PN16 200 220 250 285 340 405 460 580 640 715 840
C EN1092 PN25 200 235 270 300 360 425 485 620 670 730 845EN1092 PN40 200 235 270 300 375 450 515 660 685 - -EN1092 PN64 215 250 295 345 415 470 530 670 - - -
kg With gear box 35 45 50 75 130 150 200 350 400 550 960kg With electric actuator 40 50 60 85 140 165 230 380 450 610 1020
Weight (kg)
226 wwwbrandoniit
Needle valve
Reg
ulat
ion
Temperature min deg C MaxdegC
2 40
Maximum pressure Temperature
Article
14000 PN16
14000 PN25
14000 PN40
14000 PN64
Bar
16 bar
25 bar
40 bar
64 bar
Selection of the valves and operation limits-Maximumspeedofthefluidlt7ms(NBthediameterDNoftheneedlevalveisdeterminedaccordingtotherequired
operatingconditionsandnotnecessarilycoincideswiththediameterofthepipingUsethespeedndashflowchartandselect
preliminarilytheDNofthevalverespectingthemaximumlimitoftheflowspeedCheckthatheadlossesofthevalveare
compatible with the selected diameter If not choose a higher DN)
- Opening angle of the needle valveregulation valve 10divide90
- Check the cavitation behaviour as described in the section ldquoCavitationrdquo
Speed - flow chart
max
10 0001001
ms
2
3
4
5
10
1mch
500
600
250
300
400
200
125
150
100
80 450
7
wwwbrandoniit 227
Reg
ulat
ion
Serie 14000
Theheadlosscoefficient(ξ) relative to the opening percentage for the standard valve and for the versions equipped with
anti-cavitation device is shown in the following chart
Head losses for standard valve 100 opening Fluid water (1m H2O = 0098bar)
Opening
Std
K20
K100K50
10
100
1000
10000
130 4010 20 6050 70 800 10090
K150
10
8
65
4
3
2
m H2O
mch100010 1001
80 100
150
125
200
400
300
250
600
500
450
Kv - DN chart DN 80 100 125 150 200 250 300 400 450 500 600Kv mch 99 154 154 347 615 958 1410 2798 3140 3836 5484
The head losses in all kind of position might be calculated with the following formula
ΔP=PinndashPout=(Q )2
ΔP=PinndashPout=ξ ( v2 ) Kv
2g
DP Pin Pout (bar) pressure head losses Q (m3h) flowrateKv (m3h) flowratecoefficientξ headlosscoefficientv (ms) flowspeedg=981 (ms2) acceleration of gravity
NOTE Std=curveforstandardvalve(withoutanti-cavitationdevice)
K20K50K100K150=curverelativetovalveequippedwithanti-cavitationdevice
228 wwwbrandoniit
Needle valve
Reg
ulat
ion
Cavitation
Thespeedofthefluidvariesasitpassesthroughthevalvereachingthehighervaluesnearthevalveseat(duetothe
flowsectionrestrictionakavenacontracta)Thiscausesthestaticpressuretodecreaseandthedecreaseisgreaterthe
higherthedifferentialpressureΔPacrossthevalve
InthecaseofahighΔPacrossthevalvethestaticpressureintherestrictioncanfallbelowthevapourpressureofthe
liquid and vapour bubbles will be formed
Whenthefluidleavesthevenacontractatheflowspeeddecreasesthestaticpressureincreasesandthevapourbubbles
implode During this implosion process high energy is released in a localized volume producing pressure waves that cause
noise vibrations and erosion of the valve and pipe walls In the needle valve implosion takes place at the centre of the
valve far from the walls This gives the needle valve an intrinsic resistance to cavitation
To enhance cavitation resistance in the presence of extremely high pressure drops valves can be equipped with an anti-
cavitation device (slotted cylinders that increase energy dissipation)
In order to check if the working conditions are at risk of cavitation and if an anti-cavitation is required it is possible to
compare the cavitation index σ with the critical value σc from the following formula
In case σ lt σc no cavitation exists
02
08
0 100
10
04
10 403020
12
06050 8070
14
06
16
90
Opening
18
K150
K100
K50
K20
Std
σ=
ΔP+ v2
2g
Pout + Pa - Pv( ) ΔP (mH2O) Headlossacrossthevalve(ΔP=Pin-Pout)Pout (mH2O) Downstream pressure Pv (mH2O) Vapour pressure (02 mH2O for water at 10degC) Pa (mH2O) Absolute pressure (10 mH2O)
wwwbrandoniit 229
Reg
ulat
ion
Serie 14000
14000
Body EN GJS 400 or welded steelEpoxy coatingPN 10-16-25-40-64Temp +2 to +40 degC
Versions
Coating RAL 5005 colour
The information provided here is delivered with each product and contains ldquoInstructions for use and maintenancerdquo it is also available on our website wwwbrandoniit (download section)
STORINGKeep in a dry and closed placeNB handle the valve using belts (ISO 4878) or eye bolts if present in any case it is forbidden to lift the valve at the gearbox actuator
MAINTENANCEThanks to the design features and construction characteristics the needle valve does not require periodic maintenance Also the construction of the gear boxactuator does not require lubrication or other maintenanceNB for any necessary intervention on the valve it is absolutely essential to remove the valve from the piping
RECOMMENDATIONSBefore carrying out any maintenance or dismantling the valve-ensurethatthepipesvalvesandfluidshavecooleddown-thatthepressurehasdecreasedandthatthelinesandpipeshavebeendrainedincaseoftoxiccorrosiveinflammableor caustic liquidsTemperatures above 50degC and below 0degC might cause damage to people
INSTALLATION
- Handle with care- Ensure that there are no parts left in the piping such as welding residues plastic parts mounting residues It is recommen-dedthatthepipingbecleanedflushedcarefullybeforethevalveisinstalled-Ifthefluidcontainsalotofresidues(sandsmallstonesetchellip)ensurethatasuitablefilterisinstalledupstreamofthevalveFurthermore it is recommended that a suitable dismantling joint be installed in order to facilitate installationdisassemblingmaintenance-Leaveasuitablespacearoundthevalvetoenablemaintenanceworkandcommissioning- Freezing of the water inside the valve causes irreparable damage In risky environments provide suitable insulation of the valve or ensure that it is drained- It is recommended that a manometer be installed upstream and downstream of the valve in order to check that the pressures are compatible with the characteristics of the valve -PlacethevalvebetweentheflangesofthepipingandinstallthesealbetweenthepipeandvalveflangesCheckthatthesealshavebeenpositionedcorrectlyThedistancebetweenthecounterflangesmustbeequaltothevalversquosfacetofacedistanceDonotuseboltsofthecounterflangestobringthepipingclosetothevalveTightentheboltscrosswise-Donotweldtheflangestothepipingafterinstallingthevalve- Water hammers might cause damage and ruptures Inclination twisting and misalignments may subject the installed val-ve to excessive stresses It is recommended that elastic joints be used in order to reduce such effects as much as possible
NBThevalveisunidirectionalrespecttheflowdirectionindicatedbythearrowonthebody
Instructions and Recommendations
224 wwwbrandoniit
Needle valve
Reg
ulat
ion
6
5
9
13
1210
3
2
4
8
11
1 7 B1
H1
Art
14
000
ridu
tto
re m
an
ua
leA
rt 1
400
0 a
ttu
ato
re e
lett
rico
A
H
V
B
C
140
00 -
gea
r b
ox
140
00 -
ele
ctri
c ac
tuat
or
wwwbrandoniit 225
Reg
ulat
ion
Serie 14000Materials
123456789
1011121314
Component
BodyCrankShutterSeal ringSeal retaining ringOperating shaftRodWrist pinBushRailsMain sealLipsealO-ringBolts and nuts
Material
EN GJS 400-12 Carbon steel Carbon steel Fe 360 B nickel platedAISI 304AISI 304AISI 304AISI 420AISI 420AISI 420BronzeBronzePTFENBRNBRStainless steel
Dimensions (mm)
DN 80 100 125 150 200 250 300 400 450 500 600A Not standardized 260 300 325 350 400 450 500 600 650 700 800H 200 200 220 220 220 260 260 260 260 260 300B With gear box 180 190 200 230 230 260 290 340 380 410 580V 200 200 200 200 200 200 200 200 200 200 500H1
With electric actuator320 320 320 380 380 420 420 420 480 480 500
B1 400 420 430 460 460 500 500 550 650 700 800EN1092 PN16 200 220 250 285 340 405 460 580 640 715 840
C EN1092 PN25 200 235 270 300 360 425 485 620 670 730 845EN1092 PN40 200 235 270 300 375 450 515 660 685 - -EN1092 PN64 215 250 295 345 415 470 530 670 - - -
kg With gear box 35 45 50 75 130 150 200 350 400 550 960kg With electric actuator 40 50 60 85 140 165 230 380 450 610 1020
Weight (kg)
226 wwwbrandoniit
Needle valve
Reg
ulat
ion
Temperature min deg C MaxdegC
2 40
Maximum pressure Temperature
Article
14000 PN16
14000 PN25
14000 PN40
14000 PN64
Bar
16 bar
25 bar
40 bar
64 bar
Selection of the valves and operation limits-Maximumspeedofthefluidlt7ms(NBthediameterDNoftheneedlevalveisdeterminedaccordingtotherequired
operatingconditionsandnotnecessarilycoincideswiththediameterofthepipingUsethespeedndashflowchartandselect
preliminarilytheDNofthevalverespectingthemaximumlimitoftheflowspeedCheckthatheadlossesofthevalveare
compatible with the selected diameter If not choose a higher DN)
- Opening angle of the needle valveregulation valve 10divide90
- Check the cavitation behaviour as described in the section ldquoCavitationrdquo
Speed - flow chart
max
10 0001001
ms
2
3
4
5
10
1mch
500
600
250
300
400
200
125
150
100
80 450
7
wwwbrandoniit 227
Reg
ulat
ion
Serie 14000
Theheadlosscoefficient(ξ) relative to the opening percentage for the standard valve and for the versions equipped with
anti-cavitation device is shown in the following chart
Head losses for standard valve 100 opening Fluid water (1m H2O = 0098bar)
Opening
Std
K20
K100K50
10
100
1000
10000
130 4010 20 6050 70 800 10090
K150
10
8
65
4
3
2
m H2O
mch100010 1001
80 100
150
125
200
400
300
250
600
500
450
Kv - DN chart DN 80 100 125 150 200 250 300 400 450 500 600Kv mch 99 154 154 347 615 958 1410 2798 3140 3836 5484
The head losses in all kind of position might be calculated with the following formula
ΔP=PinndashPout=(Q )2
ΔP=PinndashPout=ξ ( v2 ) Kv
2g
DP Pin Pout (bar) pressure head losses Q (m3h) flowrateKv (m3h) flowratecoefficientξ headlosscoefficientv (ms) flowspeedg=981 (ms2) acceleration of gravity
NOTE Std=curveforstandardvalve(withoutanti-cavitationdevice)
K20K50K100K150=curverelativetovalveequippedwithanti-cavitationdevice
228 wwwbrandoniit
Needle valve
Reg
ulat
ion
Cavitation
Thespeedofthefluidvariesasitpassesthroughthevalvereachingthehighervaluesnearthevalveseat(duetothe
flowsectionrestrictionakavenacontracta)Thiscausesthestaticpressuretodecreaseandthedecreaseisgreaterthe
higherthedifferentialpressureΔPacrossthevalve
InthecaseofahighΔPacrossthevalvethestaticpressureintherestrictioncanfallbelowthevapourpressureofthe
liquid and vapour bubbles will be formed
Whenthefluidleavesthevenacontractatheflowspeeddecreasesthestaticpressureincreasesandthevapourbubbles
implode During this implosion process high energy is released in a localized volume producing pressure waves that cause
noise vibrations and erosion of the valve and pipe walls In the needle valve implosion takes place at the centre of the
valve far from the walls This gives the needle valve an intrinsic resistance to cavitation
To enhance cavitation resistance in the presence of extremely high pressure drops valves can be equipped with an anti-
cavitation device (slotted cylinders that increase energy dissipation)
In order to check if the working conditions are at risk of cavitation and if an anti-cavitation is required it is possible to
compare the cavitation index σ with the critical value σc from the following formula
In case σ lt σc no cavitation exists
02
08
0 100
10
04
10 403020
12
06050 8070
14
06
16
90
Opening
18
K150
K100
K50
K20
Std
σ=
ΔP+ v2
2g
Pout + Pa - Pv( ) ΔP (mH2O) Headlossacrossthevalve(ΔP=Pin-Pout)Pout (mH2O) Downstream pressure Pv (mH2O) Vapour pressure (02 mH2O for water at 10degC) Pa (mH2O) Absolute pressure (10 mH2O)
wwwbrandoniit 229
Reg
ulat
ion
Serie 14000
14000
Body EN GJS 400 or welded steelEpoxy coatingPN 10-16-25-40-64Temp +2 to +40 degC
Versions
Coating RAL 5005 colour
The information provided here is delivered with each product and contains ldquoInstructions for use and maintenancerdquo it is also available on our website wwwbrandoniit (download section)
STORINGKeep in a dry and closed placeNB handle the valve using belts (ISO 4878) or eye bolts if present in any case it is forbidden to lift the valve at the gearbox actuator
MAINTENANCEThanks to the design features and construction characteristics the needle valve does not require periodic maintenance Also the construction of the gear boxactuator does not require lubrication or other maintenanceNB for any necessary intervention on the valve it is absolutely essential to remove the valve from the piping
RECOMMENDATIONSBefore carrying out any maintenance or dismantling the valve-ensurethatthepipesvalvesandfluidshavecooleddown-thatthepressurehasdecreasedandthatthelinesandpipeshavebeendrainedincaseoftoxiccorrosiveinflammableor caustic liquidsTemperatures above 50degC and below 0degC might cause damage to people
INSTALLATION
- Handle with care- Ensure that there are no parts left in the piping such as welding residues plastic parts mounting residues It is recommen-dedthatthepipingbecleanedflushedcarefullybeforethevalveisinstalled-Ifthefluidcontainsalotofresidues(sandsmallstonesetchellip)ensurethatasuitablefilterisinstalledupstreamofthevalveFurthermore it is recommended that a suitable dismantling joint be installed in order to facilitate installationdisassemblingmaintenance-Leaveasuitablespacearoundthevalvetoenablemaintenanceworkandcommissioning- Freezing of the water inside the valve causes irreparable damage In risky environments provide suitable insulation of the valve or ensure that it is drained- It is recommended that a manometer be installed upstream and downstream of the valve in order to check that the pressures are compatible with the characteristics of the valve -PlacethevalvebetweentheflangesofthepipingandinstallthesealbetweenthepipeandvalveflangesCheckthatthesealshavebeenpositionedcorrectlyThedistancebetweenthecounterflangesmustbeequaltothevalversquosfacetofacedistanceDonotuseboltsofthecounterflangestobringthepipingclosetothevalveTightentheboltscrosswise-Donotweldtheflangestothepipingafterinstallingthevalve- Water hammers might cause damage and ruptures Inclination twisting and misalignments may subject the installed val-ve to excessive stresses It is recommended that elastic joints be used in order to reduce such effects as much as possible
NBThevalveisunidirectionalrespecttheflowdirectionindicatedbythearrowonthebody
Instructions and Recommendations
wwwbrandoniit 225
Reg
ulat
ion
Serie 14000Materials
123456789
1011121314
Component
BodyCrankShutterSeal ringSeal retaining ringOperating shaftRodWrist pinBushRailsMain sealLipsealO-ringBolts and nuts
Material
EN GJS 400-12 Carbon steel Carbon steel Fe 360 B nickel platedAISI 304AISI 304AISI 304AISI 420AISI 420AISI 420BronzeBronzePTFENBRNBRStainless steel
Dimensions (mm)
DN 80 100 125 150 200 250 300 400 450 500 600A Not standardized 260 300 325 350 400 450 500 600 650 700 800H 200 200 220 220 220 260 260 260 260 260 300B With gear box 180 190 200 230 230 260 290 340 380 410 580V 200 200 200 200 200 200 200 200 200 200 500H1
With electric actuator320 320 320 380 380 420 420 420 480 480 500
B1 400 420 430 460 460 500 500 550 650 700 800EN1092 PN16 200 220 250 285 340 405 460 580 640 715 840
C EN1092 PN25 200 235 270 300 360 425 485 620 670 730 845EN1092 PN40 200 235 270 300 375 450 515 660 685 - -EN1092 PN64 215 250 295 345 415 470 530 670 - - -
kg With gear box 35 45 50 75 130 150 200 350 400 550 960kg With electric actuator 40 50 60 85 140 165 230 380 450 610 1020
Weight (kg)
226 wwwbrandoniit
Needle valve
Reg
ulat
ion
Temperature min deg C MaxdegC
2 40
Maximum pressure Temperature
Article
14000 PN16
14000 PN25
14000 PN40
14000 PN64
Bar
16 bar
25 bar
40 bar
64 bar
Selection of the valves and operation limits-Maximumspeedofthefluidlt7ms(NBthediameterDNoftheneedlevalveisdeterminedaccordingtotherequired
operatingconditionsandnotnecessarilycoincideswiththediameterofthepipingUsethespeedndashflowchartandselect
preliminarilytheDNofthevalverespectingthemaximumlimitoftheflowspeedCheckthatheadlossesofthevalveare
compatible with the selected diameter If not choose a higher DN)
- Opening angle of the needle valveregulation valve 10divide90
- Check the cavitation behaviour as described in the section ldquoCavitationrdquo
Speed - flow chart
max
10 0001001
ms
2
3
4
5
10
1mch
500
600
250
300
400
200
125
150
100
80 450
7
wwwbrandoniit 227
Reg
ulat
ion
Serie 14000
Theheadlosscoefficient(ξ) relative to the opening percentage for the standard valve and for the versions equipped with
anti-cavitation device is shown in the following chart
Head losses for standard valve 100 opening Fluid water (1m H2O = 0098bar)
Opening
Std
K20
K100K50
10
100
1000
10000
130 4010 20 6050 70 800 10090
K150
10
8
65
4
3
2
m H2O
mch100010 1001
80 100
150
125
200
400
300
250
600
500
450
Kv - DN chart DN 80 100 125 150 200 250 300 400 450 500 600Kv mch 99 154 154 347 615 958 1410 2798 3140 3836 5484
The head losses in all kind of position might be calculated with the following formula
ΔP=PinndashPout=(Q )2
ΔP=PinndashPout=ξ ( v2 ) Kv
2g
DP Pin Pout (bar) pressure head losses Q (m3h) flowrateKv (m3h) flowratecoefficientξ headlosscoefficientv (ms) flowspeedg=981 (ms2) acceleration of gravity
NOTE Std=curveforstandardvalve(withoutanti-cavitationdevice)
K20K50K100K150=curverelativetovalveequippedwithanti-cavitationdevice
228 wwwbrandoniit
Needle valve
Reg
ulat
ion
Cavitation
Thespeedofthefluidvariesasitpassesthroughthevalvereachingthehighervaluesnearthevalveseat(duetothe
flowsectionrestrictionakavenacontracta)Thiscausesthestaticpressuretodecreaseandthedecreaseisgreaterthe
higherthedifferentialpressureΔPacrossthevalve
InthecaseofahighΔPacrossthevalvethestaticpressureintherestrictioncanfallbelowthevapourpressureofthe
liquid and vapour bubbles will be formed
Whenthefluidleavesthevenacontractatheflowspeeddecreasesthestaticpressureincreasesandthevapourbubbles
implode During this implosion process high energy is released in a localized volume producing pressure waves that cause
noise vibrations and erosion of the valve and pipe walls In the needle valve implosion takes place at the centre of the
valve far from the walls This gives the needle valve an intrinsic resistance to cavitation
To enhance cavitation resistance in the presence of extremely high pressure drops valves can be equipped with an anti-
cavitation device (slotted cylinders that increase energy dissipation)
In order to check if the working conditions are at risk of cavitation and if an anti-cavitation is required it is possible to
compare the cavitation index σ with the critical value σc from the following formula
In case σ lt σc no cavitation exists
02
08
0 100
10
04
10 403020
12
06050 8070
14
06
16
90
Opening
18
K150
K100
K50
K20
Std
σ=
ΔP+ v2
2g
Pout + Pa - Pv( ) ΔP (mH2O) Headlossacrossthevalve(ΔP=Pin-Pout)Pout (mH2O) Downstream pressure Pv (mH2O) Vapour pressure (02 mH2O for water at 10degC) Pa (mH2O) Absolute pressure (10 mH2O)
wwwbrandoniit 229
Reg
ulat
ion
Serie 14000
14000
Body EN GJS 400 or welded steelEpoxy coatingPN 10-16-25-40-64Temp +2 to +40 degC
Versions
Coating RAL 5005 colour
The information provided here is delivered with each product and contains ldquoInstructions for use and maintenancerdquo it is also available on our website wwwbrandoniit (download section)
STORINGKeep in a dry and closed placeNB handle the valve using belts (ISO 4878) or eye bolts if present in any case it is forbidden to lift the valve at the gearbox actuator
MAINTENANCEThanks to the design features and construction characteristics the needle valve does not require periodic maintenance Also the construction of the gear boxactuator does not require lubrication or other maintenanceNB for any necessary intervention on the valve it is absolutely essential to remove the valve from the piping
RECOMMENDATIONSBefore carrying out any maintenance or dismantling the valve-ensurethatthepipesvalvesandfluidshavecooleddown-thatthepressurehasdecreasedandthatthelinesandpipeshavebeendrainedincaseoftoxiccorrosiveinflammableor caustic liquidsTemperatures above 50degC and below 0degC might cause damage to people
INSTALLATION
- Handle with care- Ensure that there are no parts left in the piping such as welding residues plastic parts mounting residues It is recommen-dedthatthepipingbecleanedflushedcarefullybeforethevalveisinstalled-Ifthefluidcontainsalotofresidues(sandsmallstonesetchellip)ensurethatasuitablefilterisinstalledupstreamofthevalveFurthermore it is recommended that a suitable dismantling joint be installed in order to facilitate installationdisassemblingmaintenance-Leaveasuitablespacearoundthevalvetoenablemaintenanceworkandcommissioning- Freezing of the water inside the valve causes irreparable damage In risky environments provide suitable insulation of the valve or ensure that it is drained- It is recommended that a manometer be installed upstream and downstream of the valve in order to check that the pressures are compatible with the characteristics of the valve -PlacethevalvebetweentheflangesofthepipingandinstallthesealbetweenthepipeandvalveflangesCheckthatthesealshavebeenpositionedcorrectlyThedistancebetweenthecounterflangesmustbeequaltothevalversquosfacetofacedistanceDonotuseboltsofthecounterflangestobringthepipingclosetothevalveTightentheboltscrosswise-Donotweldtheflangestothepipingafterinstallingthevalve- Water hammers might cause damage and ruptures Inclination twisting and misalignments may subject the installed val-ve to excessive stresses It is recommended that elastic joints be used in order to reduce such effects as much as possible
NBThevalveisunidirectionalrespecttheflowdirectionindicatedbythearrowonthebody
Instructions and Recommendations
226 wwwbrandoniit
Needle valve
Reg
ulat
ion
Temperature min deg C MaxdegC
2 40
Maximum pressure Temperature
Article
14000 PN16
14000 PN25
14000 PN40
14000 PN64
Bar
16 bar
25 bar
40 bar
64 bar
Selection of the valves and operation limits-Maximumspeedofthefluidlt7ms(NBthediameterDNoftheneedlevalveisdeterminedaccordingtotherequired
operatingconditionsandnotnecessarilycoincideswiththediameterofthepipingUsethespeedndashflowchartandselect
preliminarilytheDNofthevalverespectingthemaximumlimitoftheflowspeedCheckthatheadlossesofthevalveare
compatible with the selected diameter If not choose a higher DN)
- Opening angle of the needle valveregulation valve 10divide90
- Check the cavitation behaviour as described in the section ldquoCavitationrdquo
Speed - flow chart
max
10 0001001
ms
2
3
4
5
10
1mch
500
600
250
300
400
200
125
150
100
80 450
7
wwwbrandoniit 227
Reg
ulat
ion
Serie 14000
Theheadlosscoefficient(ξ) relative to the opening percentage for the standard valve and for the versions equipped with
anti-cavitation device is shown in the following chart
Head losses for standard valve 100 opening Fluid water (1m H2O = 0098bar)
Opening
Std
K20
K100K50
10
100
1000
10000
130 4010 20 6050 70 800 10090
K150
10
8
65
4
3
2
m H2O
mch100010 1001
80 100
150
125
200
400
300
250
600
500
450
Kv - DN chart DN 80 100 125 150 200 250 300 400 450 500 600Kv mch 99 154 154 347 615 958 1410 2798 3140 3836 5484
The head losses in all kind of position might be calculated with the following formula
ΔP=PinndashPout=(Q )2
ΔP=PinndashPout=ξ ( v2 ) Kv
2g
DP Pin Pout (bar) pressure head losses Q (m3h) flowrateKv (m3h) flowratecoefficientξ headlosscoefficientv (ms) flowspeedg=981 (ms2) acceleration of gravity
NOTE Std=curveforstandardvalve(withoutanti-cavitationdevice)
K20K50K100K150=curverelativetovalveequippedwithanti-cavitationdevice
228 wwwbrandoniit
Needle valve
Reg
ulat
ion
Cavitation
Thespeedofthefluidvariesasitpassesthroughthevalvereachingthehighervaluesnearthevalveseat(duetothe
flowsectionrestrictionakavenacontracta)Thiscausesthestaticpressuretodecreaseandthedecreaseisgreaterthe
higherthedifferentialpressureΔPacrossthevalve
InthecaseofahighΔPacrossthevalvethestaticpressureintherestrictioncanfallbelowthevapourpressureofthe
liquid and vapour bubbles will be formed
Whenthefluidleavesthevenacontractatheflowspeeddecreasesthestaticpressureincreasesandthevapourbubbles
implode During this implosion process high energy is released in a localized volume producing pressure waves that cause
noise vibrations and erosion of the valve and pipe walls In the needle valve implosion takes place at the centre of the
valve far from the walls This gives the needle valve an intrinsic resistance to cavitation
To enhance cavitation resistance in the presence of extremely high pressure drops valves can be equipped with an anti-
cavitation device (slotted cylinders that increase energy dissipation)
In order to check if the working conditions are at risk of cavitation and if an anti-cavitation is required it is possible to
compare the cavitation index σ with the critical value σc from the following formula
In case σ lt σc no cavitation exists
02
08
0 100
10
04
10 403020
12
06050 8070
14
06
16
90
Opening
18
K150
K100
K50
K20
Std
σ=
ΔP+ v2
2g
Pout + Pa - Pv( ) ΔP (mH2O) Headlossacrossthevalve(ΔP=Pin-Pout)Pout (mH2O) Downstream pressure Pv (mH2O) Vapour pressure (02 mH2O for water at 10degC) Pa (mH2O) Absolute pressure (10 mH2O)
wwwbrandoniit 229
Reg
ulat
ion
Serie 14000
14000
Body EN GJS 400 or welded steelEpoxy coatingPN 10-16-25-40-64Temp +2 to +40 degC
Versions
Coating RAL 5005 colour
The information provided here is delivered with each product and contains ldquoInstructions for use and maintenancerdquo it is also available on our website wwwbrandoniit (download section)
STORINGKeep in a dry and closed placeNB handle the valve using belts (ISO 4878) or eye bolts if present in any case it is forbidden to lift the valve at the gearbox actuator
MAINTENANCEThanks to the design features and construction characteristics the needle valve does not require periodic maintenance Also the construction of the gear boxactuator does not require lubrication or other maintenanceNB for any necessary intervention on the valve it is absolutely essential to remove the valve from the piping
RECOMMENDATIONSBefore carrying out any maintenance or dismantling the valve-ensurethatthepipesvalvesandfluidshavecooleddown-thatthepressurehasdecreasedandthatthelinesandpipeshavebeendrainedincaseoftoxiccorrosiveinflammableor caustic liquidsTemperatures above 50degC and below 0degC might cause damage to people
INSTALLATION
- Handle with care- Ensure that there are no parts left in the piping such as welding residues plastic parts mounting residues It is recommen-dedthatthepipingbecleanedflushedcarefullybeforethevalveisinstalled-Ifthefluidcontainsalotofresidues(sandsmallstonesetchellip)ensurethatasuitablefilterisinstalledupstreamofthevalveFurthermore it is recommended that a suitable dismantling joint be installed in order to facilitate installationdisassemblingmaintenance-Leaveasuitablespacearoundthevalvetoenablemaintenanceworkandcommissioning- Freezing of the water inside the valve causes irreparable damage In risky environments provide suitable insulation of the valve or ensure that it is drained- It is recommended that a manometer be installed upstream and downstream of the valve in order to check that the pressures are compatible with the characteristics of the valve -PlacethevalvebetweentheflangesofthepipingandinstallthesealbetweenthepipeandvalveflangesCheckthatthesealshavebeenpositionedcorrectlyThedistancebetweenthecounterflangesmustbeequaltothevalversquosfacetofacedistanceDonotuseboltsofthecounterflangestobringthepipingclosetothevalveTightentheboltscrosswise-Donotweldtheflangestothepipingafterinstallingthevalve- Water hammers might cause damage and ruptures Inclination twisting and misalignments may subject the installed val-ve to excessive stresses It is recommended that elastic joints be used in order to reduce such effects as much as possible
NBThevalveisunidirectionalrespecttheflowdirectionindicatedbythearrowonthebody
Instructions and Recommendations
wwwbrandoniit 227
Reg
ulat
ion
Serie 14000
Theheadlosscoefficient(ξ) relative to the opening percentage for the standard valve and for the versions equipped with
anti-cavitation device is shown in the following chart
Head losses for standard valve 100 opening Fluid water (1m H2O = 0098bar)
Opening
Std
K20
K100K50
10
100
1000
10000
130 4010 20 6050 70 800 10090
K150
10
8
65
4
3
2
m H2O
mch100010 1001
80 100
150
125
200
400
300
250
600
500
450
Kv - DN chart DN 80 100 125 150 200 250 300 400 450 500 600Kv mch 99 154 154 347 615 958 1410 2798 3140 3836 5484
The head losses in all kind of position might be calculated with the following formula
ΔP=PinndashPout=(Q )2
ΔP=PinndashPout=ξ ( v2 ) Kv
2g
DP Pin Pout (bar) pressure head losses Q (m3h) flowrateKv (m3h) flowratecoefficientξ headlosscoefficientv (ms) flowspeedg=981 (ms2) acceleration of gravity
NOTE Std=curveforstandardvalve(withoutanti-cavitationdevice)
K20K50K100K150=curverelativetovalveequippedwithanti-cavitationdevice
228 wwwbrandoniit
Needle valve
Reg
ulat
ion
Cavitation
Thespeedofthefluidvariesasitpassesthroughthevalvereachingthehighervaluesnearthevalveseat(duetothe
flowsectionrestrictionakavenacontracta)Thiscausesthestaticpressuretodecreaseandthedecreaseisgreaterthe
higherthedifferentialpressureΔPacrossthevalve
InthecaseofahighΔPacrossthevalvethestaticpressureintherestrictioncanfallbelowthevapourpressureofthe
liquid and vapour bubbles will be formed
Whenthefluidleavesthevenacontractatheflowspeeddecreasesthestaticpressureincreasesandthevapourbubbles
implode During this implosion process high energy is released in a localized volume producing pressure waves that cause
noise vibrations and erosion of the valve and pipe walls In the needle valve implosion takes place at the centre of the
valve far from the walls This gives the needle valve an intrinsic resistance to cavitation
To enhance cavitation resistance in the presence of extremely high pressure drops valves can be equipped with an anti-
cavitation device (slotted cylinders that increase energy dissipation)
In order to check if the working conditions are at risk of cavitation and if an anti-cavitation is required it is possible to
compare the cavitation index σ with the critical value σc from the following formula
In case σ lt σc no cavitation exists
02
08
0 100
10
04
10 403020
12
06050 8070
14
06
16
90
Opening
18
K150
K100
K50
K20
Std
σ=
ΔP+ v2
2g
Pout + Pa - Pv( ) ΔP (mH2O) Headlossacrossthevalve(ΔP=Pin-Pout)Pout (mH2O) Downstream pressure Pv (mH2O) Vapour pressure (02 mH2O for water at 10degC) Pa (mH2O) Absolute pressure (10 mH2O)
wwwbrandoniit 229
Reg
ulat
ion
Serie 14000
14000
Body EN GJS 400 or welded steelEpoxy coatingPN 10-16-25-40-64Temp +2 to +40 degC
Versions
Coating RAL 5005 colour
The information provided here is delivered with each product and contains ldquoInstructions for use and maintenancerdquo it is also available on our website wwwbrandoniit (download section)
STORINGKeep in a dry and closed placeNB handle the valve using belts (ISO 4878) or eye bolts if present in any case it is forbidden to lift the valve at the gearbox actuator
MAINTENANCEThanks to the design features and construction characteristics the needle valve does not require periodic maintenance Also the construction of the gear boxactuator does not require lubrication or other maintenanceNB for any necessary intervention on the valve it is absolutely essential to remove the valve from the piping
RECOMMENDATIONSBefore carrying out any maintenance or dismantling the valve-ensurethatthepipesvalvesandfluidshavecooleddown-thatthepressurehasdecreasedandthatthelinesandpipeshavebeendrainedincaseoftoxiccorrosiveinflammableor caustic liquidsTemperatures above 50degC and below 0degC might cause damage to people
INSTALLATION
- Handle with care- Ensure that there are no parts left in the piping such as welding residues plastic parts mounting residues It is recommen-dedthatthepipingbecleanedflushedcarefullybeforethevalveisinstalled-Ifthefluidcontainsalotofresidues(sandsmallstonesetchellip)ensurethatasuitablefilterisinstalledupstreamofthevalveFurthermore it is recommended that a suitable dismantling joint be installed in order to facilitate installationdisassemblingmaintenance-Leaveasuitablespacearoundthevalvetoenablemaintenanceworkandcommissioning- Freezing of the water inside the valve causes irreparable damage In risky environments provide suitable insulation of the valve or ensure that it is drained- It is recommended that a manometer be installed upstream and downstream of the valve in order to check that the pressures are compatible with the characteristics of the valve -PlacethevalvebetweentheflangesofthepipingandinstallthesealbetweenthepipeandvalveflangesCheckthatthesealshavebeenpositionedcorrectlyThedistancebetweenthecounterflangesmustbeequaltothevalversquosfacetofacedistanceDonotuseboltsofthecounterflangestobringthepipingclosetothevalveTightentheboltscrosswise-Donotweldtheflangestothepipingafterinstallingthevalve- Water hammers might cause damage and ruptures Inclination twisting and misalignments may subject the installed val-ve to excessive stresses It is recommended that elastic joints be used in order to reduce such effects as much as possible
NBThevalveisunidirectionalrespecttheflowdirectionindicatedbythearrowonthebody
Instructions and Recommendations
228 wwwbrandoniit
Needle valve
Reg
ulat
ion
Cavitation
Thespeedofthefluidvariesasitpassesthroughthevalvereachingthehighervaluesnearthevalveseat(duetothe
flowsectionrestrictionakavenacontracta)Thiscausesthestaticpressuretodecreaseandthedecreaseisgreaterthe
higherthedifferentialpressureΔPacrossthevalve
InthecaseofahighΔPacrossthevalvethestaticpressureintherestrictioncanfallbelowthevapourpressureofthe
liquid and vapour bubbles will be formed
Whenthefluidleavesthevenacontractatheflowspeeddecreasesthestaticpressureincreasesandthevapourbubbles
implode During this implosion process high energy is released in a localized volume producing pressure waves that cause
noise vibrations and erosion of the valve and pipe walls In the needle valve implosion takes place at the centre of the
valve far from the walls This gives the needle valve an intrinsic resistance to cavitation
To enhance cavitation resistance in the presence of extremely high pressure drops valves can be equipped with an anti-
cavitation device (slotted cylinders that increase energy dissipation)
In order to check if the working conditions are at risk of cavitation and if an anti-cavitation is required it is possible to
compare the cavitation index σ with the critical value σc from the following formula
In case σ lt σc no cavitation exists
02
08
0 100
10
04
10 403020
12
06050 8070
14
06
16
90
Opening
18
K150
K100
K50
K20
Std
σ=
ΔP+ v2
2g
Pout + Pa - Pv( ) ΔP (mH2O) Headlossacrossthevalve(ΔP=Pin-Pout)Pout (mH2O) Downstream pressure Pv (mH2O) Vapour pressure (02 mH2O for water at 10degC) Pa (mH2O) Absolute pressure (10 mH2O)
wwwbrandoniit 229
Reg
ulat
ion
Serie 14000
14000
Body EN GJS 400 or welded steelEpoxy coatingPN 10-16-25-40-64Temp +2 to +40 degC
Versions
Coating RAL 5005 colour
The information provided here is delivered with each product and contains ldquoInstructions for use and maintenancerdquo it is also available on our website wwwbrandoniit (download section)
STORINGKeep in a dry and closed placeNB handle the valve using belts (ISO 4878) or eye bolts if present in any case it is forbidden to lift the valve at the gearbox actuator
MAINTENANCEThanks to the design features and construction characteristics the needle valve does not require periodic maintenance Also the construction of the gear boxactuator does not require lubrication or other maintenanceNB for any necessary intervention on the valve it is absolutely essential to remove the valve from the piping
RECOMMENDATIONSBefore carrying out any maintenance or dismantling the valve-ensurethatthepipesvalvesandfluidshavecooleddown-thatthepressurehasdecreasedandthatthelinesandpipeshavebeendrainedincaseoftoxiccorrosiveinflammableor caustic liquidsTemperatures above 50degC and below 0degC might cause damage to people
INSTALLATION
- Handle with care- Ensure that there are no parts left in the piping such as welding residues plastic parts mounting residues It is recommen-dedthatthepipingbecleanedflushedcarefullybeforethevalveisinstalled-Ifthefluidcontainsalotofresidues(sandsmallstonesetchellip)ensurethatasuitablefilterisinstalledupstreamofthevalveFurthermore it is recommended that a suitable dismantling joint be installed in order to facilitate installationdisassemblingmaintenance-Leaveasuitablespacearoundthevalvetoenablemaintenanceworkandcommissioning- Freezing of the water inside the valve causes irreparable damage In risky environments provide suitable insulation of the valve or ensure that it is drained- It is recommended that a manometer be installed upstream and downstream of the valve in order to check that the pressures are compatible with the characteristics of the valve -PlacethevalvebetweentheflangesofthepipingandinstallthesealbetweenthepipeandvalveflangesCheckthatthesealshavebeenpositionedcorrectlyThedistancebetweenthecounterflangesmustbeequaltothevalversquosfacetofacedistanceDonotuseboltsofthecounterflangestobringthepipingclosetothevalveTightentheboltscrosswise-Donotweldtheflangestothepipingafterinstallingthevalve- Water hammers might cause damage and ruptures Inclination twisting and misalignments may subject the installed val-ve to excessive stresses It is recommended that elastic joints be used in order to reduce such effects as much as possible
NBThevalveisunidirectionalrespecttheflowdirectionindicatedbythearrowonthebody
Instructions and Recommendations
wwwbrandoniit 229
Reg
ulat
ion
Serie 14000
14000
Body EN GJS 400 or welded steelEpoxy coatingPN 10-16-25-40-64Temp +2 to +40 degC
Versions
Coating RAL 5005 colour
The information provided here is delivered with each product and contains ldquoInstructions for use and maintenancerdquo it is also available on our website wwwbrandoniit (download section)
STORINGKeep in a dry and closed placeNB handle the valve using belts (ISO 4878) or eye bolts if present in any case it is forbidden to lift the valve at the gearbox actuator
MAINTENANCEThanks to the design features and construction characteristics the needle valve does not require periodic maintenance Also the construction of the gear boxactuator does not require lubrication or other maintenanceNB for any necessary intervention on the valve it is absolutely essential to remove the valve from the piping
RECOMMENDATIONSBefore carrying out any maintenance or dismantling the valve-ensurethatthepipesvalvesandfluidshavecooleddown-thatthepressurehasdecreasedandthatthelinesandpipeshavebeendrainedincaseoftoxiccorrosiveinflammableor caustic liquidsTemperatures above 50degC and below 0degC might cause damage to people
INSTALLATION
- Handle with care- Ensure that there are no parts left in the piping such as welding residues plastic parts mounting residues It is recommen-dedthatthepipingbecleanedflushedcarefullybeforethevalveisinstalled-Ifthefluidcontainsalotofresidues(sandsmallstonesetchellip)ensurethatasuitablefilterisinstalledupstreamofthevalveFurthermore it is recommended that a suitable dismantling joint be installed in order to facilitate installationdisassemblingmaintenance-Leaveasuitablespacearoundthevalvetoenablemaintenanceworkandcommissioning- Freezing of the water inside the valve causes irreparable damage In risky environments provide suitable insulation of the valve or ensure that it is drained- It is recommended that a manometer be installed upstream and downstream of the valve in order to check that the pressures are compatible with the characteristics of the valve -PlacethevalvebetweentheflangesofthepipingandinstallthesealbetweenthepipeandvalveflangesCheckthatthesealshavebeenpositionedcorrectlyThedistancebetweenthecounterflangesmustbeequaltothevalversquosfacetofacedistanceDonotuseboltsofthecounterflangestobringthepipingclosetothevalveTightentheboltscrosswise-Donotweldtheflangestothepipingafterinstallingthevalve- Water hammers might cause damage and ruptures Inclination twisting and misalignments may subject the installed val-ve to excessive stresses It is recommended that elastic joints be used in order to reduce such effects as much as possible
NBThevalveisunidirectionalrespecttheflowdirectionindicatedbythearrowonthebody
Instructions and Recommendations