Parker RAH161S50 - 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).
AFP Availability:
10 In Stock
Richmond, VA9
Summerville, SC1
Partner Available:52 In Stock
Quantities sourced from Partner Network may incur an upcharge from the displayed price. Unit prices will be adjusted accordingly when these quantities are added to your cart.
Brand Parker
Part No. RAH161S50
$172.50/each
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Products specifications
Attribute nameAttribute value
Minimum Operating Temperature-30 °FInstallation Torque164-170 Nm
DivisionHydraulic Systems DivisionOperating Temperature-34 to +121 °C
Reseat Pressure90% of pressure settingFlow Rate302.8 L/min
Seal MaterialNitrileActuation TypePressure Sensing
Maximum Operating Pressure5000 psiWeight0.34 kg
Adjustment MechanismScrewFilter Efficiency RatingISO 4406 18/16/13, SAE Class 4
Valve MaterialAll parts steel. All operating parts hardened steelMaximum Pressure Setting5000 psi
Maximum Kinematic Viscosity45-2000 SSU (6 to 420 cSt)Maximum Inlet Pressure Rating5500 psi
ConfigurationPressure ReliefPressure Control Sensitivity1910 per turn psi
Maximum Tank Pressure5000 psiFunctionPilot Operated
Cavity SizeC16-2DivisionHydraulic Cartridge Systems Division
Pressure Control Range34.5-350 barFor Fluid TypeMineral-based or synthetic hydraulic fluids
Maximum Operating Temperature+250 °FLeak Rate5 per @ 100 psi (6.8 bar) setting cm3/min
Operation TypeAutomaticStandard Setting Pressure2500 psi
Maximum Flow Rate302.8 L/minBody MaterialN/A
Mounting TypeScrew in cartridge valveSeal MaterialNitrile
Adjustment MechanismScrewMaximum Inlet Pressure Rating5500 PSI, 380 BAR
Pressure Control Range500-5000 PSI, 34.5-350 BARFlow Rate80 GAL/MIN, 302.8 L/MIN
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