Direct Acting Differential Area Relief Valves - RDH083T15

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 RDH083T15
$73.08
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Products specifications
Attribute nameAttribute value
UOMEASeal MaterialNitrile
Adjustment MechanismTamper ResistantMounting 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 BARSeal MaterialNitrile
Body Materialn/aMaximum Operating Pressure5500 psi
DivisionHydraulic Systems DivisionMaximum Kinematic Viscosity45-2000 SSU (6 to 420 cSt)
Minimum Operating Temperature-34 °CFunctionDirect Acting
Actuation TypePressure SensingCavity SizeC08-2
Operation TypeAutomaticAdjustment MechanismTamper Resistant
Maximum Tank Pressure5000 psiPort Thread Sizen/a
Flow Rate45 L/minMaximum Flow Rate45 L/min
Maximum Inlet Pressure Rating5500 psiMaximum Operating Temperature+121 °C
Filter Efficiency RatingISO 4406 18/16/13, SAE Class 4For Fluid TypeMineral-based or synthetic hydraulic fluids
Valve MaterialAll parts steel. All operating parts hardened steelOperating Temperature-30 to +250 °F
Mounting TypeScrew in cartridge valveWeight0.19 kg
Cracking PressureN/A psiLeak Rate.66 @ 75% Crack Pressure cm3/min
ConfigurationDifferential Area Relief, Differential Relief w/Reverse Flow CheckReseat Pressure75% of pressure setting
Installation Torque31 NmPressure Control Range6.9-103.5 bar
Maximum Pressure Setting1500 psiStandard Setting Pressure750 psi
Pressure Control Sensitivity15 per turn barMinimum Operating Pressure380 bar
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