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