Parker RAH201K50 - Pilot Operated Relief Valves

Parker’s pilot operated relief valves are designed for continuous duty applications featuring great stability with low pressure drop; working with pressures up to 420 bar (6000 psi) and flows up to 400 lpm (106 gpm).
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Brand Parker
Part No. RAH201K50
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Products specifications
Attribute nameAttribute value
Seal MaterialNitrileBody Materialn/a
DivisionHydraulic Cartridge Systems DivisionDivisionHydraulic Systems Division
Maximum Kinematic Viscosity45-2000 SSU (6 to 420 cSt)Minimum Operating Temperature-30 °F
Maximum Operating Pressure350 barMaximum Flow Rate100 Gal/min
ConfigurationPressure ReliefActuation TypePressure Sensing
Operation TypeAutomaticAdjustment MechanismKnob
FunctionPilot OperatedMaximum Tank Pressure5000 psi
Maximum Pressure Setting5000 psiCavity SizeC20-2
Maximum Inlet Pressure Rating5500 psiWeight0.9 kg
Installation Torque133 NmMaximum Operating Temperature+121 °C
For Fluid TypeMineral-based or synthetic hydraulic fluidsValve MaterialAll parts steel. All operating parts hardened steel
Operating Temperature-34 to +121 °CFilter Efficiency RatingISO 4406 18/16/13, SAE Class 4
Mounting TypeScrew in cartridge valveFlow Rate379 L/min
Standard Setting Pressure2500 psiPressure Control Range500-5000 psi
Pressure Control Sensitivity1711 per turn psiLeak Rate5 per @ 100 psi (6.8 bar) setting cm3/min
Reseat Pressure80% of pressure settingSeal MaterialNitrile
Adjustment MechanismKnobMaximum Inlet Pressure Rating5500 PSI, 380 BAR
Pressure Control Range500-5000 PSI, 34.5-350 BARFlow Rate100 GAL/MIN, 379 L/MIN
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