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Parker RAH081S50N - 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. RAH081S50N

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Products specifications

Attribute name	Attribute value
Seal Material	Nitrile	Body Material	n/a
Division	Hydraulic Cartridge Systems Division	Division	Hydraulic Systems Division
Maximum Kinematic Viscosity	45-2000 SSU (6 to 420 cSt)	Minimum Operating Temperature	-34 °C
Maximum Operating Pressure	350 bar	Configuration	Pressure Relief
Actuation Type	Pressure Sensing	Cavity Size	C08-2
Operation Type	Automatic	Adjustment Mechanism	Screw
Function	Pilot Operated	Maximum Tank Pressure	350 bar
Maximum Inlet Pressure Rating	350 bar	Weight	0.2 lb
Maximum Flow Rate	20 Gal/min	Installation Torque	43-49 Nm
Maximum Operating Temperature	+121 °C	For Fluid Type	Mineral-based or synthetic hydraulic fluids
Valve Material	All parts steel. All operating parts hardened steel	Operating Temperature	-34 to +121 °C
Filter Efficiency Rating	ISO 4406 18/16/13, SAE Class 4	Mounting Type	Screw in cartridge valve
Maximum Pressure Setting	350 bar	Standard Setting Pressure	2500 psi
Pressure Control Sensitivity	131.7 per turn bar	Pressure Control Range	13.8-350 bar
Reseat Pressure	90% of pressure setting	Flow Rate	75.8 L/min
Leak Rate	5 per @ 100 psi (6.8 bar) setting cm3/min	Seal Material	Nitrile
Adjustment Mechanism	Screw	Maximum Inlet Pressure Rating	5000 PSI, 350 BAR
Pressure Control Range	200-5000 PSI, 13.8-350 BAR	Flow Rate	20 GAL/MIN, 75.8 L/MIN

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