Unloading Relief Valves - M04A4JZN

Parker’s unloading pressure control valves automatically charge and maintain a specific pressure range within accumulators by loading and unloading pump flow. Usable with fixed or variable pumps and pressure of 420 bar (6000 psi) and flow up to 1 gpm.
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SKU: M04A4JZN
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Products specifications
Attribute nameAttribute value
Operating Temperature-30 to +250 °FFilter Efficiency RatingISO 4406 18/16/13, SAE Class 4
Maximum Flow Rate2 L/minMaximum Pressure Setting2900 psi
Seal MaterialNitrileMaximum Kinematic Viscosity45-2000 SSU (6 to 420 cSt)
Standard Setting Pressure125 barDivisionHydraulic Cartridge Systems Division
Maximum Inlet Pressure Rating420 barMinimum Operating Temperature-30 °F
Actuation TypePressure SensingFlow Rate0.53 Gal/min
Maximum Operating Pressure420 barMaximum Operating Temperature+250 °F
Leak RateN/A drops/minAdjustment MechanismScrew
For Fluid TypeMineral-based or synthetic hydraulic fluidsPressure Control Range725-2900 psi
Installation Torque50 NmBody Materialn/a
FunctionUnloading Relief ValveCavity SizeC10-4
DivisionMobile Hydraulic Systems Division EuropeValve MaterialAll parts steel. All operating parts hardened steel
Weight0.33 kgMaximum Tank Pressure6000 psi
Maximum Flow Rate0.53 GAL/MIN, 2 L/MINSeal MaterialNitrile
Pressure Control Range725-2900 PSI, 50-200 BARAdjustment MechanismScrew
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