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Parker PRH121S50 - 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. PRH121S50

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Products specifications

Attribute name	Attribute value
Seal Material	Nitrile	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	-30 °F	Actuation Type	Pressure Sensing
Operation Type	Automatic	Adjustment Mechanism	Screw
Function	Pilot Operated	Maximum Tank Pressure	5000 psi
Port Thread Size	n/a	Weight	0.6 lb
Cavity Size	C12-3	Configuration	Pressure Reducing/Relieving
Maximum Inlet Pressure Rating	5500 psi	Maximum Operating Temperature	+250 °F
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	Flow Rate	30 Gal/min
Installation Torque	75 Nm	Leak Rate	N/A cc/min
Maximum Drain Flow Rate	0.25 Gal/min	Maximum Pressure Setting	350 bar
Standard Setting Pressure	2500 psi	Cracking Pressure	N/A psi
Maximum Flow Rate	113.7 L/min	Pressure Control Range	34.5-350 bar
Pressure Control Sensitivity	1711 per turn psi	Seal Material	Nitrile
Adjustment Mechanism	Screw	Mounting Type	Screw in cartridge valve
Cracking Pressure	N/A	Flow Rate	30 GAL/MIN, 113.7 L/MIN
Pressure Control Range	500-5000 PSI, 34.5-350 BAR

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