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Parker RAH081K50 - 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. RAH081K50

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Products specifications

Attribute name	Attribute value
Body Material	n/a	Maximum Operating Pressure	5000 psi
Division	Hydraulic Cartridge Systems Division	Division	Hydraulic Systems Division
Maximum Kinematic Viscosity	45-2000 SSU (6 to 420 cSt)	Minimum Operating Temperature	-37 °C
Maximum Operating Temperature	+200 °F	Weight	0.09 kg
Configuration	Pressure Relief	Actuation Type	Pressure Sensing
Cavity Size	C08-2	Operation Type	Automatic
Adjustment Mechanism	Knob	Function	Pilot Operated
Maximum Tank Pressure	350 bar	Maximum Inlet Pressure Rating	5000 psi
Seal Material	D-Ring (Standard)	For Fluid Type	Mineral-based or synthetic hydraulic fluids
Valve Material	All parts steel. All operating parts hardened steel	Filter Efficiency Rating	ISO 4406 18/16/13, SAE Class 4
Mounting Type	Screw in cartridge valve	Operating Temperature	-35 to +200 °F
Installation Torque	32-36 lb-ft	Maximum Pressure Setting	350 bar
Standard Setting Pressure	172.4 bar	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
Maximum Flow Rate	75.8 L/min	Adjustment Mechanism	Knob
Maximum Inlet Pressure Rating	5000 PSI, 350 BAR	Seal Material	D-Ring (Standard)
Pressure Control Range	200-5000 PSI, 13.8-350 BAR	Flow Rate	20 GAL/MIN, 75.8 L/MIN

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