Direct Acting Differential Area Relief Valves - RDH083S15

Parker’s direct acting differential area relief valves are for fast response intermittent applications and work up to 380 bar (5500 psi) and 151 lpm (40 gpm). These valves have lower leakage rates and pressure rise than standard direct acting reliefs.
Availability: Backordered
SKU: RDH083S15
$77.40
Products specifications
Attribute nameAttribute value
Body MaterialN/AWeight0.19 kg
Seal MaterialNitrileMaximum Operating Pressure5500 psi
DivisionHydraulic Systems DivisionMaximum Kinematic Viscosity45-2000 SSU (6 to 420 cSt)
Minimum Operating Temperature-34 °CActuation TypePressure Sensing
FunctionDirect ActingCavity SizeC08-2
Operation TypeAutomaticAdjustment MechanismScrew
Maximum Tank Pressure5000 psiPort Thread Sizen/a
Maximum Flow Rate12 Gal/minFlow Rate45 L/min
Maximum Inlet Pressure Rating380 barFor Fluid TypeMineral-based or synthetic hydraulic fluids
Maximum Operating Temperature+250 °FValve MaterialAll parts steel. All operating parts hardened steel
Operating Temperature-30 to +250 °FFilter Efficiency RatingISO 4406 18/16/13, SAE Class 4
Mounting TypeScrew in cartridge valveCracking PressureN/A psi
Leak Rate10 @ 75% Crack Pressure drops/minConfigurationDifferential Area Relief, Differential Relief w/Reverse Flow Check
Reseat Pressure75% of pressure settingInstallation Torque31 Nm
Pressure Control Range100-1500 psiMaximum Pressure Setting1500 psi
Standard Setting Pressure51.7 barPressure Control Sensitivity218 per turn psi
Minimum Operating Pressure380 bar
Seal MaterialNitrileAdjustment MechanismScrew
Mounting TypeScrew in cartridge valveCracking PressureN/A
Flow Rate12 GAL/MIN, 45 L/MINMaximum Inlet Pressure Rating5500 PSI, 380 BAR
Pressure Control Range100-1500 PSI, 6.9-103.5 BARStandard Setting Pressure750 PSI, 51.7 BAR
California Residents: Prop-65 Warning
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