Direct Acting Differential Area Relief Valves - RDH083K30

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.
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SKU RDH083K30
$73.52
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Products specifications
Attribute nameAttribute value
UOMEASeal MaterialNitrile
Adjustment MechanismKnobMounting TypeScrew in cartridge valve
Cracking PressureN/AFlow Rate12 GAL/MIN, 45 L/MIN
Maximum Inlet Pressure Rating5500 PSI, 380 BARStandard Setting Pressure1500 PSI, 103.5 BAR
Pressure Control Range1000-3000 PSI, 69-210 BARSeal MaterialNitrile
Body Materialn/aMaximum Operating Pressure5500 psi
DivisionHydraulic Systems DivisionMaximum Kinematic Viscosity45-2000 SSU (6 to 420 cSt)
Minimum Operating Temperature-34 °CFlow Rate12 Gal/min
FunctionDirect ActingActuation TypePressure Sensing
Maximum Pressure Setting210 barCavity SizeC08-2
Operation TypeAutomaticAdjustment MechanismKnob
Maximum Tank Pressure350 barPort Thread Sizen/a
Maximum Flow Rate45 L/minMaximum Inlet Pressure Rating5500 psi
Maximum Operating Temperature+121 °CFilter Efficiency RatingISO 4406 18/16/13, SAE Class 4
For Fluid TypeMineral-based or synthetic hydraulic fluidsValve MaterialAll parts steel. All operating parts hardened steel
Operating Temperature-34 to +121 °CMounting TypeScrew in cartridge valve
Standard Setting Pressure1500 psiCracking PressureN/A psi
Leak Rate10 @ 75% Crack Pressure drops/minConfigurationDifferential Area Relief, Differential Relief w/Reverse Flow Check
Weight0.43 lbReseat Pressure75% of pressure setting
Installation Torque31 NmPressure Control Range1000-3000 psi
Pressure Control Sensitivity27 per turn barMinimum Operating Pressure380 bar
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