Pressure relief valve DHV 712-R - fluidmold.rs · Pressure relief valve DHV 712-R set range: 0,3 - 10,0 bar Advantage • pressure setting possible at any time, also during operation

Pressure relief valve DHV 712-Rset range: 0,3 - 10,0 bar

Advantage• pressure setting possible at any time, also during operation• optimum monitoring valves• high reproducibility of the set pressure• high level of operating safety and long service life• constant, low vibration control• low-maintenance• can be easily connected to the pipework by proven technologies

- solvent or fusion welding• radial removal is possible even after installation• low pressure increase until the valve is fully opened• reliable diaphragm fastening with standard stainless steel screws• considerably shortened face-to-face dimension with injection

moulded threaded neck according to DIN 8063• metal inserts in the valve housing allow the valves to be directly

fitted to mounting sets, the movability of the union nuts on thevalves made of PVC-U, PP and PVDF remains unaffected

• suitable for oscillating pumps

Application• chemical plants• industrial plants• water treatment

Intended Use• The pressure relief valve which is directly controlled by the

medium, is used in technical processing plants for keepingpreset working pressures constant on the primary side.

• The pressure relief valve 712-R, specially designed for dosingtechnology, is used for ensuring constant dosing quantities inconjunction with oscillating pumps. In the event of anycounterpressure on the secondary side, the admission pressureand thus the dosing quantity remain constant.

• not suitable for equipment with safety function according to thePressure Equipment Directive.

Valve Function• If the working or inlet pressure rises above the set value, the

pressurized valve piston is lifted against the spring force. Thevalve opens and a pressure relief on the secondary side (outletside) takes place. The valve closes as soon as the workingpressure at the valve piston is lower than the set spring preload.

• When in the case of the dynamic flow valve with set workingpressure, counter pressure is generated on the outlet side, thispressure acts simultaneously underneath the active area of thediaphragm and on the loosely guided valve piston, i.e. the forcesunder the diaphragm surface and the piston cancel each otherout. The valve lift and thus the working pressure remain virtuallyconstant.

Valve Setting• Set or adjust the desired or permissible working pressure at the

adjustment screw with the aid of pressure gauges (ASVdiaphragm pressure gauge guard, type MDM 902) in the pipesystem after removing the protection cap. The adjustment screwis secured by a counter nut and can be sealed againstunauthorized adjustment, if necessary.

Classification Of The Identification Number• refer table on page 7

Flow Media• Technically pure, neutral and aggressive fluids, provided that

the selected valve materials coming into contact with the mediaare resistant at the operating temperature according to theASV-resistance guide.

• For nitric acid or sulfuric acid please specify the precise operatingconditions of the application.

Fluid Temperature• see pressure-/temperature diagram

Operating Pressure• see pressure-/temperature diagram

Size• DN 10 - DN 50

Set Range• 0.3 - 10.0 bar

Nominal Pressure (H2O, 20°C)• PN 10

Working Pressure• set pressure plus flow dependent pressure increase (see

characteristic curves): approx. 0.3 - 10.0 bar

Deviation From The Working Pressure• up to 5 bar counterpressure: approx. ±0.3 bar• over 5 bar counterpressure: approx. ±0.5 bar

Opening Pressure• approx. 0.3 - 0.5 bar

Hysteresis• Difference between opening and closing pressure approx. 0.3

bar

1All rights for technical modifications withheld> data sheet no.: 330156 - 2013/08/26ASV Stübbe GmbH & Co. KG · Hollwieser Str. 5 · D-32602 Vlotho · Tel. +49(0)5733. 799-0 · Fax +49(0)5733. 799-5000 · [email protected] · www.asv-stuebbe.de

Valve Body• PVC-U• PP• PVDF• PTFE - carbon fibre reinforced• stainless steel 1.4571 (V4A)

Bonnet• PP, glass fibre reinforced

Piston• PVC-U• PP• PVDF• PTFE piston for the media to permeation (penetration) tilt (such

as HF, HCl, HNO3).

Sealing• FPM• PTFE• EPDM

Diaphragm• PTFE (EPDM diaphragm with PTFE coating on the surfaces coming

into contact with the medium)• PTFE membrane with ECTFE film for media (such as HF, HCl,

HNO3) for the permeation (penetration) tilt.

Screws• stainless steel (1.4301)

Actuation• medium controlled

Connection• refer comments on the identification numbers

Flow Direction• always in the direction of the arrow

Mounting Position• as required

Fastening• via threaded inserts (metal inserts) in the valve body

Colour• valve body: PVC-U, grey, RAL 7011• valve body: PP, grey, RAL 7032• valve body: PVDF, opaque, yellowish-white• bonnet: orange, RAL 2004• valve body: PTFE, black• valve body: stainless steel, unpainted

Pressure Gauge Connection• see page 14 »version with threaded holes for pressure gauge

mounting«

> data sheet no.: 330156 - 2013/08/26All rights for technical modifications withheld2ASV Stübbe GmbH & Co. KG · Hollwieser Str. 5 · D-32602 Vlotho · Tel. +49(0)5733. 799-0 · Fax +49(0)5733. 799-5000 · [email protected] · www.asv-stuebbe.de

Pressure/temperature diagram

P = operating pressureT = temperatureThe pressure/temperature limits are applicable for the statednominal pressures and a computed operating life factor of 25 years.These are standard values for harmless media (DIN 2403), to whichthe valve material is resistant.For other media please refer to the ASV resistance guide.The durability of wear parts depends on the operating conditionsof the application.For temperatures below 0°C (PP < +10°C) please specify the preciseoperating conditions of the application.The rated pressure depends on the valve size and material. Forthe corresponding rated pressure value of the valve, please referto the »Order table«.

Pressure/temperature diagram

P = operating pressureT = temperatureThe pressure/temperature limits are applicable for the statednominal pressures and a computed operating life factor of 25 years.These are standard values for harmless media (DIN 2403), to whichthe valve material is resistant.For other media please refer to the ASV resistance guide.The durability of wear parts depends on the operating conditionsof the application.For temperatures below 0°C (PP < +10°C) please specify the preciseoperating conditions of the application.The rated pressure depends on the valve size and material. Forthe corresponding rated pressure value of the valve, please referto the »Order table«.


Pressure relief valve DHV 712-R

Pressure loss curve (standard values for H2O, 20°C)

∆P = pressure lossQ = flowpressure loss and kv valueThe diagram shows the pressure loss ∆P in relation to the flow Q.Conversion aid:cv = kv x 0.07; fv = kv x 0.0585Units:kv [l/min]; cv [gal/min] US; fv [gal/min] GB

Pressure loss curve (standard values for H2O, 20°C)

∆P = pressure lossQ = flowpressure loss and kv valueThe diagram shows the pressure loss ∆P in relation to the flow Q.Conversion aid:cv = kv x 0.07; fv = kv x 0.0585Units:kv [l/min]; cv [gal/min] US; fv [gal/min] GB



Operating behaviour

pE = set PressurepA = working pressurepÖ = opening pressurepS = closing pressurepÖ - pS = hystersispE - pA = flow dependent pressure reductionQ = flow

Sectional drawing DHV 712-R

A = primary sideB = secondary side1 = protection cap2 = adjustment screw3 = counter nut4 = piston5= diaphragm6 = flat sealing ring7 = valve seat

DHV 712-R with pressure gauge

The pressure relief valve can be factory fitted with a pressure gaugefor neutral media. The resistance of the pressure gauge materialhas to be taken into consideration for other media.



Applications for Pressure Relief ValveExample 1: Constant system pressure

X = valve opensY = valve closedpA = working pressurepP = pump pressurepÖ = opening pressure

Applications for Pressure Relief ValveExample 2: Consumer 1 and/or 2 opens, pressure relief valve closes


Applications for Pressure Relief ValveExample 3: Pressure relief valve as backflow preventer

X = valve opensY = valve closedpmax = max. pressurepP = pump pressurepÖ = opening pressure

Applications for Pressure Relief ValveExample 4: Pressure relief valve as overflow valve:The containerpressure or system must not exceed the max. pressure value




Malfunctions, possible causes, rectification

Maintenance noteScrew tightening torque (Nm)

The speci�ed values apply to lubricated screws.Check the tightening torque of the body screws at certain intervalsin case of setting of the diaphragms and/or temperaturefluctuations.

Operating noteSafe operation of the valve can only be ensured if it is properlyinstalled, operated, serviced or repaired by qualified personnelaccording to its intended use while observing the accidentprevention regulations, safety regulations, relevant standards,directives/technical regulations or codes of practice such as e.g.DIN, DIN EN, DIN ISO and DVS*. *DVS = German Welding SocietyThe intended use includes adhering to specified limit values forpressure and temperature, as well as checking the resistance. Thisrequires all components coming into contact with the medium tobe "resistant" in accordance with the ASV resistance guide.Pressure gauge versionIf the valve body is equipped with a pressure gauge, do not tightenthe pressure gauge with more than max. 3 Nm.Please take into account that the material PTFE is classified asresistant against many media, however, PTFE is not diffusion tightwhen used as a film, e.g. for the ASV membranes. Please contactus for limit cases (nitric acid or sulfuric acid).



Ident codeSettingrange and option

A = standard ident no. (6 digits)B = ident code for settingrangeC = ident code for »washed free of silicone«a = ident code »0« not washed free of siliconeb = Ident code »1« washed free of silicone

example c = ident no. / setting = 0,5 bar / not washed free of siliconeexample d = ident no. / setting = 1,1 bar / not washed free of siliconeexample e = ident no. / setting = 10 bar / washed free of silicone

1

body PVC-U

63504032252016d(mm)sizepressure range 50403225201510DN(mm)

21 1/21 1/413/41/23/8DN(inch)10101010101010PN(bar)

ident No.sealingConnection

146356146355146354146353146352146351146350EPDMPVC-Usocket end DIN ISO 146372

5.20 kg1463715.10 kg

1463705.00 kg

1463691.90 kg

1463681.86 kg

1463670.85 kg

1463660.80 kg

FPMweight

146500146499146498146497146496146495146494EPDMPVC-Uspigot end FIX DINISO

1465165.20 kg

1465155.10 kg

1465145.00 kg

1465131.90 kg

1465121.86 kg

1465110.85 kg

1465100.80 kg

FPMweight

146388146387146386146385146384146383146382EPDMPVC-Usocket end ANSI 146404

5.20 kg1464035.10 kg

1464025.00 kg

1464011.90 kg

1464001.86 kg

1463990.85 kg

1463980.80 kg

FPMweight

146420146419146418146417146416146415146414EPDMPVC-Usocket end BS 146428

5.20 kg1464275.10 kg

1464265.00 kg

1464251.90 kg

1464241.86 kg

1464230.85 kg

1464220.80 kg

FPMweight

146436146435146434146433146432146431146430EPDMPVC-Usocket end JIS 146444

5.20 kg1464435.10 kg

1464425.00 kg

1464411.90 kg

1464401.86 kg

1464390.85 kg

1464380.80 kg

FPMweight

146452146451146450146449146448146447146446EPDMPVC-Uthreaded sockets Rp 146460

5.20 kg1464595.10 kg

1464585.00 kg

1464571.90 kg

1464561.86 kg

1464550.85 kg

1464540.80 kg

FPMweight

146484146483146482146481146480146479146478EPDMA4 1.4571threaded sockets Rp 146492

6.11 kg1464915.61 kg

1464905.41 kg

1464892.09 kg

1464882.00 kg

1464870.94 kg

1464860.85 kg

FPMweight

146468146467146466146465146464146463EPDMPEspigot end DIN ISO 146476

5.20 kg1464755.10 kg

1464745.00 kg

1464731.90 kg

1464721.86 kg

1464710.85 kg

FPMweight

146531146530146529146528146527146526EPDMGFRflange DIN EN 1092 146545

6.21 kg1465445.85 kg

1465435.66 kg

1465422.28 kg

1465412.16 kg

1465401.06 kg

FPMweight

146559146558146557146556146555146554EPDMPP / steelflange ANSI 146573

7.00 kg1465726.32 kg

1465716.10 kg

1465702.81 kg

1465692.46 kg

1465681.33 kg

FPMweight


Pressure relief valve DHV 712-R, Standard

body PP


21 1/21 1/413/41/23/8DN(inch)10101010101010PN(bar)


146588146587146586146585146584146583146582EPDMPPsocket end DIN ISO 146596

4.28 kg1465954.18 kg

1465944.10 kg

1465931.61 kg

1465921.57 kg

1465910.72 kg

1465900.67 kg

FPMweight

146617146616146615146614146613146612EPDMPPspigot end DIN ISO 146624

4.28 kg1466234.18 kg

1466224.10 kg

1466211.61 kg

1466201.57 kg

1466190.72 kg

FPMweight

146632146631146630146629146628146627146626EPDMPPspigot end FIX DINISO

1466404.28 kg

1466394.18 kg

1466384.10 kg

1466371.61 kg

1466361.57 kg

1466350.72 kg

1466340.67 kg

FPMweight

146647146646146645146644146643146642EPDMGFRflange DIN EN 1092 146654

5.28 kg1466534.94 kg

1466524.69 kg

1466512.02 kg

1466501.89 kg

1466490.94 kg

FPMweight

146661146660146659146658146657146656EPDMPP / steelflange ANSI 146668

6.07 kg1466675.42 kg

1466665.22 kg

1466652.55 kg

1466642.20 kg

1466631.20 kg

FPMweight

146603146602146601146600146599146598EPDMPPthreaded sockets Rp 146610

4.28 kg1466094.18 kg

1466084.10 kg

1466071.61 kg

1466061.57 kg

1466050.72 kg

FPMweight



body PVDF


21 1/21 1/413/41/23/8DN(inch)10101010101010PN(bar)


1466765.65 kg

1466755.55 kg

1466745.45 kg

1466732.15 kg

1466722.11 kg

1466711.07 kg

1466701.02 kg

FPMweight

PVDFsocket end DIN ISO

1466915.65 kg

1466905.55 kg

1466895.45 kg

1466882.15 kg

1466872.11 kg

1466861.07 kg

FPMweight

PVDFspigot end DIN ISO

1467065.65 kg

1467055.55 kg

1467045.45 kg

1467032.15 kg

1467022.11 kg

1467011.07 kg

1467001.07 kg

FPMweight

PVDFspigot end FIX DINISO

1467357.61 kg

1467346.84 kg

1467336.67 kg

1467323.15 kg

1467312.78 kg

1467301.58 kg

FPMweight

PP / steelflange ANSI

1467217.78 kg

1467207.35 kg

1467196.99 kg

1467183.21 kg

1467172.85 kg

1467161.61 kg

FPMweight

PP / steelflange DIN EN 1092

body PTFE


21 1/21 1/413/41/23/8DN(inch)10101010101010PN(bar)


1207175.80 kg

1207165.80 kg

1207155.80 kg

1207142.20 kg

1207132.20 kg

1207121.00 kg

1207111.00 kg

PTFEPTFEthreaded neck G

body A4 1.4571


21 1/21 1/413/41/23/8DN(inch)10101010101010PN(bar)


12071014.28 kg

12070912.80 kg

12070812.80 kg

1207074.60 kg

1207044.60 kg

1207062.20 kg

1207052.00 kg

PTFEA4 1.4571threaded neck G



dimensions



63504032252016d (mm)50403225201510DN (mm)

21 1/21 1/413/41/23/8DN (Zoll)

Maßedimensions

63,050,040,032,025,020,016,0d8,08,08,06,06,06,06,0M

2 3/42 1/421 1/21 1/413/4G37,037,037,025,025,020,020,0h1.457156,056,056,038,038,025,025,0hPP37,037,037,025,025,020,020,0hPTFE56,056,056,038,038,025,025,0hPVC-U56,056,056,038,038,025,025,0hPVDF

250,0230,0230,0180,0180,0150,0-L343,0338,0331,0270,0264,0228,0-L1PP395,0395,0395,0340,0340,0310,0-L1PE-Stutzen333,0327,0321,0267,0261,0225,0-L1PVDF205,0205,0205,0150,0150,0120,0120,0L21.4571204,0204,0204,0150,0150,0120,0120,0L2PP205,0205,0205,0150,0150,0120,0120,0L2PTFE204,0204,0204,0150,0150,0120,0120,0L2PVC-U204,0204,0204,0150,0150,0120,0120,0L2PVDF211,0211,0211,0156,0156,0126,0128,0L3PP211,0211,0211,0156,0156,0126,0126,0L3PVC-U

209,0209,0209,0156,0156,0125,0127,0L3PVDF211,0211,0211,0156,0156,0126,0126,0L3 ANSI213,0211,0211,0159,0160,0128,0132,0211,0211,0211,0156,0156,0126,0126,0L3 BS219,0221,0217,0162,0158,0128,0128,0

21 1/21 1/413/41/23/8Rp38,031,026,022,019,016,014,0t

261,0261,0261,0201,0201,0173,0173,0H1.4571262,0262,0262,0202,0202,0174,0174,0HPP261,0261,0261,0201,0201,0173,0173,0HPTFE262,0262,0262,0202,0202,0174,0174,0HPVC-U262,0262,0262,0202,0202,0174,0174,0HPVDF244,0224,0224,0174,0174,0144,0144,0L4

18,017,017,015,014,012,0-bGFK Flansch DINEN 1092

18,018,016,016,013,013,0-bPP/Stahl FlanschANSI

18,017,017,015,014,013,0-bEN 1092

147,0147,0147,0107,0107,081,081,0N65656546462424V1.457165656546464040VPP65656546464040VPTFE65656546464040VPVC-U65656546464040VPVDF

L3 JIS

L3 Rp

PP/Stahl Flansch

PVC-UPVC-UPVC-UPVC-U/PP

Version For Pressure Gauge Installation• version with 2 x threaded hole G 1/4" for pressure gauge

connection

body PVC-U


21 1/21 1/413/41/23/8DN(inch)10101010101010PN(bar)


1463645.20 kg

1463635.10 kg

1463625.00 kg

1463611.90 kg

1463601.86 kg

1463590.85 kg

1463580.80 kg

EPDMweight

PVC-Usocket end DIN ISO

1465085.20 kg

1465075.10 kg

1465065.00 kg

1465051.90 kg

1465041.86 kg

1465030.85 kg

1465020.80 kg

EPDMweight

PVC-Uspigot end FIX DINISO

1463965.20 kg

1463955.10 kg

1463945.00 kg

1463931.90 kg

1463921.86 kg

1463910.85 kg

1463900.80 kg

EPDMweight

PVC-Usocket end ANSI

1465386.21 kg

1465375.85 kg

1465365.66 kg

1465352.28 kg

1465342.16 kg

1465331.06 kg

EPDMweight

GFRflange DIN EN 1092

1465667.00 kg

1465656.32 kg

1465646.10 kg

1465632.81 kg

1465622.46 kg

1465611.33 kg

EPDMweight



Pressure relief valve DHV 712-R, Pressure gauge version

dimensions

63504032252016d(mm)50403225201510DN(mm)

21 1/21 1/413/41/23/8DN(inch)

dimensions(mm)

63504032252016d8886666M

56565638382525h250230230180180150-L244224224174174144144L1204204204150150120120L2211211211156156126126L338312622191614t

262262262202202174174H244224224174174144144L4

181717151412-bGFR181816161313-bPP / steel

1471471471071078181N65656546464040V


Pressure relief valve DHV 712-R, Pressure gauge version

Special Version• for media (such as HF, HCl, HNO3) for the permeation

(penetration) tilt.• piston PTFE• PTFE-Membrane with ECTFE film

body PVC-U


21 1/21 1/413/41/23/8DN(inch)10101010101010PN(bar)


1463805.20 kg

1463795.10 kg

1463785.00 kg

1463771.90 kg

1463761.86 kg

1463750.85 kg

1463740.80 kg

FPMweight

PVC-Usocket end DIN ISO

1465245.20 kg

1465235.10 kg

1465225.00 kg

1465211.90 kg

1465201.86 kg

1465190.85 kg

1465180.80 kg

FPMweight

PVC-Uspigot end FIX DINISO

1464125.20 kg

1464115.10 kg

1464105.00 kg

1464091.90 kg

1464081.86 kg

1464070.85 kg

1464060.80 kg

FPMweight

PVC-Usocket end ANSI

1465526.21 kg

1465515.85 kg

1465505.66 kg

1465492.28 kg

1465482.16 kg

1465471.06 kg

FPMweight

GFRflange DIN EN 1092

1465807.00 kg

1465796.32 kg

1465786.10 kg

1465772.81 kg

1465762.46 kg

1465751.33 kg

FPMweight



Pressure relief valve DHV 712-R, Special Version

body PVDF


21 1/21 1/413/41/23/8DN(inch)10101010101010PN(bar)


1466845.65 kg

1466835.55 kg

1466825.45 kg

1466812.15 kg

1466802.11 kg

1466791.07 kg

1466781.02 kg

FPMweight

PVDFsocket end DIN ISO

1466985.65 kg

1466975.55 kg

1466965.45 kg

1466952.15 kg

1466942.11 kg

1466931.07 kg

FPMweight

PVDFspigot end DIN ISO

1467145.65 kg

1467135.55 kg

1467125.45 kg

1467112.15 kg

1467102.11 kg

1467091.07 kg

1467081.02 kg

FPMweight

PVDFspigot end FIX DINISO

1467427.61 kg

1467416.84 kg

1467406.67 kg

1467393.15 kg

1467382.78 kg

1467371.58 kg

FPMweight


1467287.78 kg

1467277.35 kg

1467266.99 kg

1467253.21 kg

1467242.85 kg

1467231.61 kg

FPMweight




dimensions

63504032252016d(mm)50403225201510DN(mm)

21 1/21 1/413/41/23/8DN(inch)

dimensions(mm)

63504032252016d8886666M

56565638382525h250230230180180150-L244224224174174144144L1PVC-U333327321267261225-L1PVDF204204204150150120120L2PVC-U203203203149149119119L2PVDF211211211156156126126L3PVC-U

209209209156156125127L3PVDF38312622191614t

262262262202202174174H244224224174174144144L4

181717151412-bPVC-UGFR

181816161313-bPVC-U/PVDFPP / steel

1917.517.515.514.513-bPVDF1471471471071078181N65656546464040V



Item Overview

DHV 712-R, PVC-U, PP, PVDFDN 10 - DN 15

designationquantitypositionvalve body11bonnet12separating disc13pressure disc14diaphragm15pressure plate16spring plate17pressure spring18steel ball19piston, complete110protection cap111hexagon bolt412.1hexagon bolt113counter nut114flat sealing ring115hexagon nut417washer417.5washer418O-ring221union end222union nut223protection cap424protection cap425Plug227

DHV 712-R PVC-U, PP, PVDFDN 20 - DN 50

designationquantitypositionvalve body11bonnet12separating disc13pressure disc14diaphragm15pressure plate16spring plate17pressure spring18steel ball19piston, complete110protection cap111hexagon bolt212.1hexagon bolt113counter nut114flat sealing ring115hexagon bolt416hexagon nut617washer617.5washer618O-ring221union end222union nut223protection cap424protection cap425



DHV 712-R PTFEDN 10 - DN 15

designationquantitypositionvalve body11bonnet12separating disc13pressure disc14diaphragm15pressure plate16spring plate17pressure spring18steel ball19piston110.1piston point110.2flat sealing ring110.3protection cap111hexagon bolt412hexagon bolt113counter nut114flat sealing ring115hexagon nut417washer417.2washer418.2O-ring221union end222union nut223protection cap424protection cap425Plug227

DHV 712-R PTFEDN 20 - DN 50

designationquantitypositionvalve body11bonnet12separating disc13pressure disc14diaphragm15pressure plate16spring plate17pressure spring18steel ball19piston110.1piston point110.2protection cap111hexagon bolt412hexagon bolt113counter nut114flat sealing ring115hexagon nut417washer417.2washer618.2O-ring221union end222union nut223protection cap424protection cap425Plug227



stainless steel 1.4571DN 10 - DN 15

designationquantitypositionvalve body11bonnet12separating disc13pressure disc14diaphragm15pressure plate16spring plate17pressure spring18steel ball19piston110.1piston point110.2flat sealing ring110.3protection cap111hexagon bolt412hexagon bolt113counter nut114washer418O-ring221protection cap424

stainless steel 1.4571DN 20 - DN 50

designationquantitypositionvalve body11bonnet12separating disc13pressure disc14diaphragm15pressure plate16spring plate17pressure spring18steel ball19piston110.1piston point110.2flat sealing ring110.3protection cap111hexagon bolt612hexagon bolt113counter nut114washer618O-ring221protection cap624



Characteristic curvesConfiguration example

The valve is set tight at 5 bar.A flow of approx. 2000 l/h is reached at a pressure increase of 1 bar.According to the curve, this results in the following values:set pressure pE: 5 bar; working pressure pA: 6 bar; opening pressure pÖ: 5.5 bar; closing pressure pS: 5.2 barDN 10

pA = working pressureQ = flow

DN 15


DN 20


DN 25




DN 32


DN 40


DN 50






Documents

Pressure relief valve DHV 712-R - fluidmold.rs · Pressure relief valve DHV 712-R set range: 0,3 - 10,0 bar Advantage • pressure setting possible at any time, also during operation