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Pressure relief valve DHV 716 - Hydramet 716 Stubbe Pressure Relief... · Pressure relief valve DHV 716 set range: 0,5 - 10,0 bar Advantage • pressure setting possible at any time,

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Text of Pressure relief valve DHV 716 - Hydramet 716 Stubbe Pressure Relief... · Pressure relief valve DHV...

  • Pressure relief valve DHV 716set range: 0,5 - 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 metal inserts in the valve body allow the valves to be directly

    fitted to mounting sets, the movability of the union nuts remainsunaffected

    reliable diaphragm fastening with standard stainless steel screws hermetically sealed by valve diaphragm with formed sealing

    rings short face-to-face dimension of the threaded variant

    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 can also be used as an overflow valveto prevent pressure peaks. In this case, the pressure relief valveis fitted in a bypass line.

    Valve Function When the valve is closed in the position of rest, the piston and/or

    valve seat is only impinged with the secondary pressure, whenit is available. When the working or inlet pressure (primary side)rises above the set value, the diaphragm is lifted against thespring force. The valve opens and a pressure relief on thesecondary side takes place.

    The ribbed diaphragm, dimensioned for full valve lift, separatesthe medium in the valve body from the bonnet and theatmosphere. The hermetic seal - especially in the highertemperature range - is ensured by formed sealing rings.

    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.

    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

    Set Range 0.5 - 10.0 bar

    Nominal Pressure (H2O, 20C) PN 10

    Working Pressure set pressure plus flow dependent pressure increase (see

    characteristic curves).

    Opening Pressure Difference ca. 0.4 bar

    Hysteresis Difference between opening and closing pressure approx. 0.3

    bar

    Valve Body PVC-U PP PVDF

    Bonnet PP, glass fibre reinforced

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

    into contact with the medium)

    Sealing FPM EPDM

    Screws stainless steel (1.4301)

    Actuation medium controlled

    www.hydramet.com.auwww.hydramet.com.au

    WA SA & NT VIC & TAS NSW & ACT QLD (08) 9412 6100 (08) 8374 7800 (03) 9325 3900 (02) 4350 8200 (07) 3802 9500 [email protected] [email protected] [email protected] [email protected] [email protected]

    07/2012

  • Connection union DIN 8063 union socket end for solvent welding DIN ISO (PVC-U) union socket end for fusion welding DIN ISO (PP) union socket end for fusion welding DIN ISO (PVDF) spigot end for solvent welding DIN ISO (PVC-U) fusion spigot end DIN ISO (PP) fusion spigot end DIN ISO (PVDF) union socket end for fusion welding DIN ISO (PP) on request union socket end for fusion welding DIN ISO (PE) on request

    Flow Direction always in the direction of the arrow

    Mounting Position as required

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

    Colour body: PVC-U, grey, RAL 7011 body: PP, grey, RAL 7032 body: PVDF, opaque, yellowish-white bonnet: orange, RAL 2004 bottom section: PVC-U, grey, RAL 7011 bottom section: PP, grey, RAL 7032 bottom section: PVDF, opaque, yellowish-white

    Pressure Gauge Connection The pressure relief valve can be factory fitted with a pressure

    gauge for neutral media. The resistance of the pressure gaugematerial has to be taken into consideration for other media.

    The pressure gauge is normally connected to the primary side.

    www.hydramet.com.auwww.hydramet.com.au

    WA SA & NT VIC & TAS NSW & ACT QLD (08) 9412 6100 (08) 8374 7800 (03) 9325 3900 (02) 4350 8200 (07) 3802 9500 [email protected] [email protected]com.au [email protected] [email protected] [email protected]

    07/2012

  • 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 0C (PP < +10C) 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 loss curve (standard values for H2O, 20C)

    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] GBOperating behaviour

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

    Pressure relief valves, Pressure relief valve DHV 716

    www.hydramet.com.auwww.hydramet.com.au

    WA SA & NT VIC & TAS NSW & ACT QLD (08) 9412 6100 (08) 8374 7800 (03) 9325 3900 (02) 4350 8200 (07) 3802 9500 [email protected] [email protected] [email protected] [email protected] [email protected]

    07/2012

  • Sectional drawing DHV 716

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

    DHV 716 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..

    Pressure relief valves, Pressure relief valve DHV 716

    www.hydramet.com.auwww.hydramet.com.au

    WA SA & NT VIC & TAS NSW & ACT QLD (08) 9412 6100 (08) 8374 7800 (03) 9325 3900 (02) 4350 8200 (07) 3802 9500 [email protected] [email protected] [email protected] [email protected] [email protected]

    07/2012

  • Applications for Pressure Relief ValveExample 1: Constant system pressure

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

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

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

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

    X = valve opensY = valve closedpmax = max. pressurepP = pump pressurep = 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

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

    Pressure relief valves, Pressure relief valve DHV 716

    www.hydramet.com.auwww.hydramet.com.au

    WA SA & NT VIC & TAS NSW & ACT QLD (08) 9412 6100 (08) 8374 7800 (03) 9325 3900 (02) 4350 8200 (07) 3802 9500 [email protected] [email protected] [email protected] [email protected] [email protected]

    07/2012

  • Malfunctions, possible causes, rectification

    Maintenance noteScrew tightening torque (Nm)

    The specified 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).

    Pressure relief valves, Pressure relief valve DHV 716

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    WA SA & NT VIC & TAS NSW & ACT QLD (08) 9412 6100 (08) 8374 7800 (03) 9325 3900 (02) 4350 8200 (07) 3802 9500 [email protected] [email protected] [email protected] [email protected] [email protected]

    07/2012

  • body PVC-U

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

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

    0.5-100.5-100.5-100.5-100.5-100.5-100.5-10setting range (bar)

    ident No.sealingConnection

    119048119047119046119045119044119043119042EPDMPVC-Usocket end DIN ISO 119055

    4.28 kg1190544.18 kg

    1190534.10 kg

    1190521.61 kg

    1190511.57 kg

    1190500.72 kg

    1190490.67 kg

    FPMweight

    121970121969121968121967121966121965121964EPDMPVC-Uspigot end DIN ISO 121977

    5.20 kg1219765.10 kg

    1219755.00 kg

    1219741.90 kg

    1219731.86 kg

    1219720.85 kg

    1219710.80 kg

    FPMweight

    body PP

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

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

    0.5-100.5-100.5-100.5-100.5-100.5-100.5-10setting range (bar)

    ident No.sealingConnection

    119062119061119060119059119058119057119056EPDMPPsocket end DIN ISO 119069

    5.65 kg1190685.55 kg

    1190675.45 kg

    1190662.15 kg

    1190652.11 kg

    1190641.07 kg

    1190631.02 kg

    FPMweight

    121984121983121982121981121980121979121978EPDMPPspigot end DIN ISO 121991

    4.28 kg1219904.18 kg

    1219894.10 kg

    1219881.61 kg

    1219871.57 kg

    1219860.72 kg

    1219850.67 kg

    FPMweight

    Pressure relief valves, Pressure relief valve DHV 716

    www.hydramet.com.auwww.hydramet.com.au

    WA SA & NT VIC & TAS NSW & ACT QLD (08) 9412 6100 (08) 8374 7800 (03) 9325 3900 (02) 4350 8200 (07) 3802 9500 [email protected] [email protected] [email protected] [email protected] [email protected]

    07/2012

  • body PVDF

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

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

    0.5-100.5-100.5-100.5-100.5-100.5-100.5-10setting range (bar)

    ident No.sealingConnection

    1190835.65 kg

    1190825.55 kg

    1190815.45 kg

    1190802.15 kg

    1190792.11 kg

    1190781.07 kg

    1190771.02 kg

    FPMweight

    PVDFsocket end DIN ISO

    122005122004122003122002122001122000121999FPMPVDFspigot end DIN ISO

    Pressure relief valves, Pressure relief valve DHV 716

    www.hydramet.com.auwww.hydramet.com.au

    WA SA & NT VIC & TAS NSW & ACT QLD (08) 9412 6100 (08) 8374 7800 (03) 9325 3900 (02) 4350 8200 (07) 3802 9500 [email protected] [email protected] [email protected] [email protected] [email protected]

    07/2012

  • dimensions

    63504032252016d(mm)50403225201510DN(mm)

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

    dimensions(mm)

    63504032252016d57575737372525hPP/PVC-U54545436362424hPVDF

    244224224174174144144L1205205205150150120120L2PP/PVC-U200200200147147118118L2PVDF211211211156156126126L3PP/PVC-U207207207153153124124L3PVDF

    38312622191614t262262262202202174174H1471471471071078181N65656546464040V

    Pressure relief valves, Pressure relief valve DHV 716

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    WA SA & NT VIC & TAS NSW & ACT QLD (08) 9412 6100 (08) 8374 7800 (03) 9325 3900 (02) 4350 8200 (07) 3802 9500 [email protected] [email protected] [email protected] [email protected] [email protected]

    07/2012

  • Item Overview

    designationquantitypositionvalve body11bonnet12separating disc13pressure disc14diaphragm15pressure plate16spring plate17pressure spring18steel ball19piston110piston point111disc112hexagon bolt113steel ball114hexagon bolt115hexagon nut116O-ring217protection cap118hexagon bolt419hexagon nut421disc422union end223union nut224protection cap425protection cap426disc427Plug229

    designationquantitypositionvalve body11bonnet12separating disc13pressure disc14diaphragm15pressure plate16spring plate17pressure spring18steel ball19piston110piston point111disc112hexagon bolt113steel ball114hexagon bolt115hexagon nut116O-ring217protection cap118hexagon bolt419hexagon bolt220hexagon nut621disc622union end223union nut224protection cap625protection cap626disc627Plug229

    Pressure relief valves, Pressure relief valve DHV 716

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    WA SA & NT VIC & TAS NSW & ACT QLD (08) 9412 6100 (08) 8374 7800 (03) 9325 3900 (02) 4350 8200 (07) 3802 9500 [email protected] [email protected] [email protected] [email protected] [email protected]

    07/2012

  • 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 p: 5.4 bar; closing pressure pS: 5.1 barDN 10

    pA = working pressureQ = flow

    DN 15

    pA = working pressureQ = flow

    DN 20

    pA = working pressureQ = flow

    DN 25

    pA = working pressureQ = flow

    Pressure relief valves, Pressure relief valve DHV 716

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    WA SA & NT VIC & TAS NSW & ACT QLD (08) 9412 6100 (08) 8374 7800 (03) 9325 3900 (02) 4350 8200 (07) 3802 9500 [email protected] [email protected] [email protected] [email protected] [email protected]

    07/2012

  • DN 32

    pA = working pressureQ = flow

    DN 40

    pA = working pressureQ = flow

    DN 50

    pA = working pressureQ = flow

    Pressure relief valves, Pressure relief valve DHV 716

    www.hydramet.com.auwww.hydramet.com.au

    WA SA & NT VIC & TAS NSW & ACT QLD (08) 9412 6100 (08) 8374 7800 (03) 9325 3900 (02) 4350 8200 (07) 3802 9500 [email protected] [email protected] [email protected] [email protected] [email protected]

    07/2012

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