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Picture of Direct Acting Differential Area Relief Valves - RDH103S20

*PRODUCT IMAGE IS REPRESENTATIVE PROVIDED BY THE MANUFACTURER. DO NOT MAKE BUYING DECISIONS SOLEY BASED ON THE IMAGE. PLEASE VERIFY SPECIFICATIONS MEET YOUR REQUIREMENTS.

Direct Acting Differential Area Relief Valves - RDH103S20

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 RDH103S20
POR
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Products specifications
Attribute nameAttribute value
Adjustment MechanismScrewMounting TypeScrew in cartridge valve
Cracking PressureN/ASeal MaterialD-Ring (Standard)
Flow Rate20 GAL/MIN, 75 L/MINMaximum Inlet Pressure Rating5500 PSI, 380 BAR
Standard Setting Pressure1000 PSI, 69 BARPressure Control Range500-2000 PSI, 34.5-138 BAR
Body Materialn/aMaximum Operating Pressure5500 psi
DivisionHydraulic Systems DivisionMaximum Kinematic Viscosity45-2000 SSU (6 to 420 cSt)
Minimum Operating Temperature-35 °FWeight0.23 kg
Maximum Operating Temperature+200 °FFunctionDirect Acting
Actuation TypePressure SensingOperation TypeAutomatic
Adjustment MechanismScrewCavity SizeC10-2
Maximum Tank Pressure350 barPort Thread Sizen/a
Seal MaterialD-Ring (Standard)Maximum Flow Rate20 Gal/min
Maximum Inlet Pressure Rating380 barFilter 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
Mounting TypeScrew in cartridge valveOperating Temperature-37 to +93 °C
Flow Rate20 Gal/minInstallation Torque69-75 Nm
Standard Setting Pressure69 barMaximum Pressure Setting138 bar
Cracking PressureN/A psiLeak Rate5 @ 75% Crack Pressure drops/min
ConfigurationDifferential Area Relief, Differential Relief w/Reverse Flow CheckReseat Pressure85% of pressure setting
Minimum Operating Pressure380 barPressure Control Range34.5-138 bar
Pressure Control Sensitivity246 per turn psi
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