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Parker PRH161S50 - Pilot Operated Pressure Reducing Relieving Valves

Parker’s pilot operated acting reducing & relieving valves are used in applications where specific functions require reduced and regulated pressure. Capable of flows up to 150 lpm (40 gpm) and pressures up to 380 bar (5500 psi).

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Brand Parker

Part No. PRH161S50

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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	-30 °F
Maximum Operating Pressure	350 bar	Maximum Flow Rate	40 Gal/min
Actuation Type	Pressure Sensing	Operation Type	Automatic
Adjustment Mechanism	Screw	Function	Pilot Operated
Maximum Tank Pressure	350 bar	Maximum Pressure Setting	5000 psi
Port Thread Size	n/a	Cavity Size	C16-3
Weight	0.75 lb	Configuration	Pressure Reducing/Relieving
Maximum Inlet Pressure Rating	5500 psi	For Fluid Type	Mineral-based or synthetic hydraulic fluids
Valve Material	All parts steel. All operating parts hardened steel	Operating Temperature	-30 to +250 °F
Filter Efficiency Rating	ISO 4406 18/16/13, SAE Class 4	Mounting Type	Screw in cartridge valve
Maximum Operating Temperature	+93 °C	Pressure Control Sensitivity	1910 per turn psi
Cracking Pressure	N/A psi	Standard Setting Pressure	172 bar
Flow Rate	151.4 L/min	Installation Torque	164-170 Nm
Pressure Control Range	500-5000 psi	Maximum Drain Flow Rate	0.5 Gal/min
Leak Rate	5 per 100 PSI (6.9 BAR) setting cc/min	Seal Material	Nitrile
Adjustment Mechanism	Screw	Mounting Type	Screw in cartridge valve
Cracking Pressure	N/A	Flow Rate	40 GAL/MIN, 151.4 L/MIN
Pressure Control Range	500-5000 PSI, 34.5-350 BAR

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