Parker RDH083K15 - Direct Acting Differential Area Relief Valves

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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Brand Parker
Part No. RDH083K15
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Products specifications
Attribute nameAttribute value
Seal MaterialNitrileBody Materialn/a
Maximum Operating Pressure5500 psiDivisionHydraulic Systems Division
Maximum Kinematic Viscosity45-2000 SSU (6 to 420 cSt)Minimum Operating Temperature-34 °C
Flow Rate12 Gal/minFunctionDirect Acting
Actuation TypePressure SensingCavity SizeC08-2
Operation TypeAutomaticAdjustment MechanismKnob
Maximum Tank Pressure350 barPort Thread Sizen/a
Maximum Flow Rate45 L/minMaximum Inlet Pressure Rating5500 psi
Maximum Operating Temperature+250 °FFor Fluid TypeMineral-based or synthetic hydraulic fluids
Valve MaterialAll parts steel. All operating parts hardened steelOperating Temperature-34 to +121 °C
Filter Efficiency RatingISO 4406 18/16/13, SAE Class 4Mounting TypeScrew in cartridge valve
Cracking PressureN/A psiLeak Rate10 @ 75% Crack Pressure drops/min
ConfigurationDifferential Area Relief, Differential Relief w/Reverse Flow CheckReseat Pressure75% of pressure setting
Standard Setting Pressure51.7 barWeight0.43 lb
Installation Torque31 NmPressure Control Range6.9-103.5 bar
Maximum Pressure Setting103.5 barMinimum Operating Pressure380 bar
Pressure Control Sensitivity15 per turn barSeal MaterialNitrile
Adjustment MechanismKnobMounting TypeScrew in cartridge valve
Cracking PressureN/AFlow Rate12 GAL/MIN, 45 L/MIN
Maximum Inlet Pressure Rating5500 PSI, 380 BARPressure Control Range100-1500 PSI, 6.9-103.5 BAR
Standard Setting Pressure750 PSI, 51.7 BAR
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