FLUTEC Pressure Relief Valves DB4E - HASMAK
FLUTECPressurePressure ReliefReliefValvesValvesDB4EDB4E1.1.Connection housingsE 5.161.11/07.03up to 630 barup to 30 l/min
1.DESCRIPTION1.3. APPLICATION1.1. GENERAL-- E 5.161.11/07.03 2According to DIN--ISO 1219,HYDAC pressure relief valvesDB4E are valves for oil hydraulicsystems used for controllingpressure by opening the outlet tothe tank when the inlet pressureexceeds the spring force.The damping unit fitted on thepressure side ensures that astable operation is maintainedover the whole capacity rangeand that the noise level is kept toa minimum. An excellentconstant--pressure performance isachieved by means of thehydrodynamic lift support. Furtheradvantages of these valves areas follows:standardised installationdimensions means that they aresuited to many differentapplicationstheir compact design providesspace--saving installation inconnection housings, controlblocks, etc. especially in confinedinstallation conditionslow hysteresis and high stabilityensure accurate pressure controloptimum system adaptation bymeans of various pressure rangessimple assembly by means ofservice--friendly cartridge valvetechnologya wide range of connectionhousings is available for optimumadaptation to a multitude ofapplicationsthe zinc--plated surface is suitablefor use in mobile applicationswithout additional coatings.In accordance with pressurevessel regulations pressure setand lead sealed pressure reliefvalves are available for oilhydraulic systems.The corresponding valvespecifications are set out in thebrochure ”HYDAC PressureRelief Valves DB4 CE”no. E 5.163./. A B C DE2F1ABCDEF12Adjustment deviceValve bodySpringSpring plate with hydro-dynamic lift supportClosing cone with dampingpistonValve seatPressure portTank port1.2. FUNCTIONHYDAC pressure relief valvesDB4E are direct--operated,spring--loaded cone seat valvesfor oil hydraulic systems. Thevalve basically consists of a valvebody with built--in valve seat, ahardened and polished closingcone and the adjustment devicefor setting the initial springtension. The spring applies thisforce to the closing cone andpushes it against the valve seat.On the opposite side of theclosing cone the system pressureacts via port 1 of the valve. If thehydraulic pressure force is belowthe pre--set spring tension, thevalve is closed. If the hydraulicpressure force exceeds thepre--set spring tension, theclosing cone is lifted off the valveseat and the operating fluid flowsfrom pressure port 1 to tank port2. This limits the pressure acrossport 1. To ensure that a stableoperation is maintained, theclosing cone is securely locatedin the damping piston which hasto displace oil in an aperture witheach movement of the closingcone. This produces a dampingforce each time, opposing thedirection of movement. 1.4.HYDAC pressure relief valvesDB4E are used:as safety valves for limitingpressure to the maximumpermissibleas safety valves for cylinders,pumps and other pressuregeneratorsfor limiting pressure in hydraulicunits and control blocksfor pressure control of hydrauliccircuitsAreas of application could be, forexample:hydraulic unitselevating platformsmobile hydraulicsclamping hydraulicsforce or torque limiting on driveelementsNOTEWhen fitting the valves intocontrol blocks and housings thegiven torques must be observed!Note port configuration!ImportantIf the connections are incorrect, orthe pressure has been incorrectlyset above the operating pressure,the safety function of the valve isno longer operational.Max. pressure across tank port 2:350 barPlease noteThe cracking pressure of thevalve increases by the amount ofpressure across tank port 2!
TECHNICALSPECIFICATIONS2.1.GENERAL2.1.1. Designation and symbolPressure relief valve2.1.2Model code(also order example)DB4E -- 01 X -- 350 F 315Pressure relief valveType01 standard, zinc--platedSeries(determined by manufacturer)Setting pressure range(see also 2.2.7.)100 up to 100 bar200 up to 200 bar350 up to 350 bar630 up to 630 barType of adjustmentV adjustable with tool (standard)M maximum pressure relief of the setting range,adjustable with toolS scaled knob, adjustable by handF fixed setting, cannot be adjustedP can be lead--sealed, adjustable with toolA hand wheel, lockable, adjustable by hand(hand wheel with locking bolt cylinder type 2 Hsimultaneous locking: lock E 10)Cracking pressure settingV,P if no details are given, cracking pressure is approx. 10 bar(spring relaxed)F factory set cracking pressure in barM maximum adjustable cracking pressure in barStandard modelsStock no. ( order no.)716001716002716003716004Model codeDB4E--01X--100 VDB4E--01X--200 VDB4E--01X--350 VDB4E--01X--630 VPlease quote stock number when ordering.Delivery for non--standard models is longer and the price is higher.2.1.3. Type of constructionCone seat valve2.1.4. Type of mountingCartridge valve2.1.5. Mounting positionOptional2.1.6. WeightDB4E.0.14 kg2.1.7. Flow directionfrom 1 to 2 pressure relieffunctionfrom 2 to 1 leakage--free2.1.8. Ambient temperature rangemin. --20 5Cmax. 80 5C2.1.9. MaterialsValve body: high tensile steelClosing element: hardened andpolished steel, wear--resistant2.1.10. SealsFPM and PTFE2.1.11. Type of connectionSuitable connection housingswith installation dimensions06020 are available.See separate housing brochureno.: E 5.252./.E 5.161.11/07.032.3
Pressure range.100 barinlet pressure p in bar2.2.1. Nominal pressureInlet (port 1):up to 630 barOutlet (port 2): up to 350 bar2.2.2. Operating pressure ranges. up to 100 bar. up to 200 bar. up to 350 bar. up to 630 barfor lowest setting pressures see2.2.7. Pressure, dependent on flow rate2.2.3. Operating fluidMineral oil to DIN 51524 Part 1 and 22.2.4. Operating fluid temperature rangemin. -- 20 5Cmax. 80 5C2.2.5. Viscosity rangemin. 2.8 mm2/smax. 800 mm2/s2.2.6. FiltrationMax. permissible contamination level of the operatingfluid to ISO class 21/19/16 (NAS 1638 class 10).We recommend a filter with a minimum retention rateof b 20 100.The fitting of filters and regular replacement ofelements ensures correct functioning, reduces wearand tear and increases the service life.2.2.7. Pressure, dependent on flow rate(measured at n 36 mm2/s and toil 50 5C)Pressure range.200 barinlet pressure p in bar2.2. HYDRAULIC DETAILSinlet pressure p in barPressure range.350 barE 5.161.11/07.03inlet pressure p in barPressure range.630 bar4
2.3.DIMENSIONSDB4EType of adjustmentFVPMSATorque 25 5 NmInstallation dimensions 06020:4.NOTECartridge form toolsToolStock No.Countersink170033Reamer1000768Tap1002648Plug gauge168840E 5.161.11/07.03fitting depthThe information in this brochurerelates to the operating conditionsand applications described.For applications or operatingconditions not described, pleasecontact the relevant technicaldepartment.Subject to technical modifications.5
1.1. E 5.161.11/07.03 FLUTEC Pressure Relief Valves DB4E up to 630bar up to 30l/min Connection housings DB4E Pressure Relief Valves
FLUTEC Pressure Relief Valves DB4E jusqu’à 360 bar jusqu’à 28 l/minEinschraubventil. A Dispositif de réglage B Corps C Ressort D Assiette avec assistance hydrodynamique . 3108568 DB4E–012–CE0034.ENISO4126.4L.16.350 En cas de commande, veuillez indiquer le code article. Les articles hors–
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tank; 2. Oil composition and API gravity; 3. Tank operating characteristics (e.g., sales flow rates, size of tank); and 4. Ambient temperatures. There are two approaches to estimating the quantity of vapor emissions from crude oil tanks. Both use the gas-oil ratio (GOR) at a given pressure and temperature and are expressed in standard cubic feet per barrel of oil (scf per bbl). This process is .
