Direct Acting Differential Area Relief Valves - RDH083T30

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 RDH083T30
$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 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 °CFunctionDirect Acting
Actuation TypePressure SensingMaximum Pressure Setting210 bar
Cavity SizeC08-2Operation TypeAutomatic
Adjustment MechanismTamper ResistantMaximum Tank Pressure350 bar
Port Thread Sizen/aMaximum Flow Rate12 Gal/min
Flow Rate45 L/minMaximum Inlet Pressure Rating380 bar
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-30 to +250 °FMounting TypeScrew in cartridge valve
Standard Setting Pressure1500 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 Range1000-3000 psi
Pressure Control Sensitivity27 per turn barMinimum Operating Pressure380 bar
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