Direct Acting Differential Area Relief Valves - RDH083S50V

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 RDH083S50V
$66.56
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Products specifications
Attribute nameAttribute value
UOMEASeal MaterialFluorocarbon
Adjustment MechanismScrewMounting TypeScrew in cartridge valve
Cracking PressureN/AFlow Rate12 GAL/MIN, 45 L/MIN
Maximum Inlet Pressure Rating5500 PSI, 380 BARStandard Setting Pressure2500 PSI, 172 BAR
Pressure Control Range2000-5000 PSI, 138-350 BARSeal MaterialFluorocarbon
Body Materialn/aMaximum Operating Pressure5500 psi
DivisionHydraulic Systems DivisionMaximum Kinematic Viscosity45-2000 SSU (6 to 420 cSt)
Minimum Operating Temperature-26 °CFunctionDirect Acting
Actuation TypePressure SensingCavity SizeC08-2
Operation TypeAutomaticAdjustment MechanismScrew
Maximum Tank Pressure350 barMaximum Pressure Setting5000 psi
Port Thread Sizen/aMaximum Flow Rate12 Gal/min
Flow Rate45 L/minMaximum Inlet Pressure Rating5500 psi
Maximum Operating Temperature+400 °FFilter 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-26 to +204 °CMounting TypeScrew in cartridge valve
Standard Setting Pressure2500 psiCracking PressureN/A psi
Leak Rate.66 @ 75% Crack Pressure cm3/minConfigurationDifferential Area Relief, Differential Relief w/Reverse Flow Check
Weight0.43 lbReseat Pressure75% of pressure setting
Installation Torque31 NmPressure Control Range138-350 bar
Pressure Control Sensitivity614 per turn psiMinimum Operating Pressure380 bar
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