Pilot Operated Pressure Reducing Relieving Valves

*PRODUCT IMAGE IS REPRESENTATIVE PROVIDED BY THE MANUFACTURER. DO NOT MAKE BUYING DECISIONS SOLEY BASED ON THE IMAGE. PLEASE VERIFY SPECIFICATIONS MEET YOUR REQUIREMENTS.

Parker's family of pilot operated acting reducing & relieving valves provide superior pressure control in applications where specific regulated and relief pressures are needed for precise operation on functions that require regulated pressures up to 380 bar (5500 psi) and flows up to 150 lpm (40 gpm). Parker's pilot operated acting reducing & relieving valves are designed with several pressure ranges in order to give a higher degree of control with a variety of adjustment style options available. The additional valve stability due to the pilot operation make these valves ideal for sensitive functions such as up or downforce, clamping, or braking applications on various types of machinery within the mobile and industrial markets.

Markets:
• Agriculture
• Construction Equipment
• Industrial
• Miscellaneous Manufacturing
• Miscellaneous Mobile

Features/Benefits:
• Multiple pressure ranges available for more accurate pressure control
• Compact size for reduced space requirements
• Adjustable and tamperproof versions available
• High pressure capacity
• All external parts zinc plated

Applications:
• Brakes
• Clamps
• Suspension systems
• Up/down-force systems

Additional Technical Insight:
Typical applications are in mobile & industrial equipment, where a branch of the system is intended to operate at a lower setting than high system pressure. Hydraulic functions such as brake circuits, clamping or clutch circuits, suspension systems, street sweepers, or seeding and planting rows in agricultural equipment are common applications for these products.

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Part No.	Availability	Partner Available	Price	UOM	Seal Material	Body Material	Maximum Operating Pressure	Division	Division	Maximum Kinematic Viscosity	Minimum Operating Temperature	Flow Rate	Maximum Flow Rate	Actuation Type	Operation Type	Function	Leak Rate	Maximum Tank Pressure	Maximum Pressure Setting	Pressure Control Sensitivity	Port Thread Size	Cracking Pressure	Weight	Cavity Size	Configuration	Adjustment Mechanism	Maximum Inlet Pressure Rating	Installation Torque	For Fluid Type	Valve Material	Filter Efficiency Rating	Operating Temperature	Maximum Operating Temperature	Mounting Type	Maximum Drain Flow Rate	Standard Setting Pressure	Pressure Control Range	Seal Material	Mounting Type	Cracking Pressure	Adjustment Mechanism	Flow Rate	Pressure Control Range
PRH121F50V	Quote Required	Quote Required	TBD		Fluorocarbon	n/a	5000	Hydraulic Valve Systems Division	Hydraulic Systems Division	45-2000 SSU (6 to 420 cSt)	-15	30	30	Pressure Sensing	Automatic	Pilot Operated	n/a	5000	5000	n/a	n/a	n/a	0.6	C12-3	Pressure Reducing/Relieving	Fixed	5500	56	Mineral-based or synthetic hydraulic fluids	All parts steel. All operating parts hardened steel	ISO 4406 18/16/13, SAE Class 4	-15 to +400	+400	Screw in cartridge valve	0.25	2500	500-5000	Fluorocarbon	Screw in cartridge valve	N/A	Fixed	30 GAL/MIN, 113.7 L/MIN	500-5000 PSI, 34.5-350 BAR
PRH121K10	Quote Required	Quote Required	TBD		Nitrile	n/a	5000 psi	Hydraulic Cartridge Systems Division	Hydraulic Systems Division	45-2000 SSU (6 to 420 cSt)	-34 °C	113.7 L/min	113.7 L/min	Pressure Sensing	Automatic	Pilot Operated	N/A cc/min	5000 psi	69 bar	334 per turn psi	n/a	N/A psi	0.6 lb	C12-3	Pressure Reducing/Relieving	Knob	380 bar	56 lb-ft	Mineral-based or synthetic hydraulic fluids	All parts steel. All operating parts hardened steel	ISO 4406 18/16/13, SAE Class 4	-34 to +121 °C	+93 °C	Screw in cartridge valve	0.94 L/min	500 psi	6.9-69 bar	Nitrile	Screw in cartridge valve	N/A	Knob	30 GAL/MIN, 113.7 L/MIN	100-1000 PSI, 6.9-69 BAR
PRH121K10V	Quote Required	Quote Required	TBD		Fluorocarbon	n/a	5000 psi	Hydraulic Cartridge Systems Division	Hydraulic Systems Division	45-2000 SSU (6 to 420 cSt)	-26 °C	113.7 L/min	30 Gal/min	Pressure Sensing	Automatic	Pilot Operated	N/A cc/min	350 bar	1000 psi	23 per turn bar	n/a	N/A psi	0.27 kg	C12-3	Pressure Reducing/Relieving	Knob	5500 psi	75 Nm	Mineral-based or synthetic hydraulic fluids	All parts steel. All operating parts hardened steel	ISO 4406 18/16/13, SAE Class 4	-26 to +204 °C	+204 °C	Screw in cartridge valve	0.25 Gal/min	34.5 bar	100-1000 psi	Fluorocarbon	Screw in cartridge valve	N/A	Knob	30 GAL/MIN, 113.7 L/MIN	100-1000 PSI, 6.9-69 BAR
PRH121K20	Quote Required	Quote Required	TBD		Nitrile	n/a	5000	Hydraulic Valve Systems Division	Hydraulic Systems Division	45-2000 SSU (6 to 420 cSt)	-30	30	30	Pressure Sensing	Automatic	Pilot Operated	n/a	5000	2000	539 per turn	n/a	n/a	0.6	C12-3	Pressure Reducing/Relieving	Knob	5500	56	Mineral-based or synthetic hydraulic fluids	All parts steel. All operating parts hardened steel	ISO 4406 18/16/13, SAE Class 4	-30 to +250	+250	Screw in cartridge valve	0.25	1000	200-2000	Nitrile	Screw in cartridge valve	N/A	Knob	30 GAL/MIN, 113.7 L/MIN	200-2000 PSI, 13.8-138 BAR
PRH121K20V	Quote Required	Quote Required	TBD		Fluorocarbon	n/a	5000	Hydraulic Valve Systems Division	Hydraulic Systems Division	45-2000 SSU (6 to 420 cSt)	-15	30	30	Pressure Sensing	Automatic	Pilot Operated	n/a	5000	2000	539 per turn	n/a	n/a	0.6	C12-3	Pressure Reducing/Relieving	Knob	5500	56	Mineral-based or synthetic hydraulic fluids	All parts steel. All operating parts hardened steel	ISO 4406 18/16/13, SAE Class 4	-15 to +400	+400	Screw in cartridge valve	0.25	1000	200-2000	Fluorocarbon	Screw in cartridge valve	N/A	Knob	30 GAL/MIN, 113.7 L/MIN	200-2000 PSI, 13.8-138 BAR
PRH121K30	Quote Required	Quote Required	TBD		Nitrile	n/a	350 bar	Hydraulic Cartridge Systems Division	Hydraulic Systems Division	45-2000 SSU (6 to 420 cSt)	-30 °F	30 Gal/min	113.7 L/min	Pressure Sensing	Automatic	Pilot Operated	N/A cc/min	5000 psi	3000 psi	870 per turn psi	n/a	N/A psi	0.27 kg	C12-3	Pressure Reducing/Relieving	Knob	380 bar	75 Nm	Mineral-based or synthetic hydraulic fluids	All parts steel. All operating parts hardened steel	ISO 4406 18/16/13, SAE Class 4	-30 to +250 °F	+250 °F	Screw in cartridge valve	0.94 L/min	103.5 bar	300-3000 psi	Nitrile	Screw in cartridge valve	N/A	Knob	30 GAL/MIN, 113.7 L/MIN	300-3000 PSI, 20.7-210 BAR
PRH121K30V	Quote Required	Quote Required	TBD		Fluorocarbon	n/a	350 bar	Hydraulic Cartridge Systems Division	Hydraulic Systems Division	45-2000 SSU (6 to 420 cSt)	-15 °F	30 Gal/min	113.7 L/min	Pressure Sensing	Automatic	Pilot Operated		350 bar	3000 psi	870 per turn psi	n/a	N/A psi	0.27 kg	C12-3	Pressure Reducing/Relieving	Knob	380 bar	75 Nm	Mineral-based or synthetic hydraulic fluids	All parts steel. All operating parts hardened steel	ISO 4406 18/16/13, SAE Class 4	-15 to +400 °F	+400 °F	Screw in cartridge valve	0.94 L/min	103.5 bar	300-3000 psi	Fluorocarbon	Screw in cartridge valve	N/A	Knob	30 GAL/MIN, 113.7 L/MIN	300-3000 PSI, 20.7-210 BAR
PRH121K50	Quote Required	Quote Required	TBD		Nitrile	n/a	350 bar	Hydraulic Cartridge Systems Division	Hydraulic Systems Division	45-2000 SSU (6 to 420 cSt)	-30 °F	113.7 L/min	113.7 L/min	Pressure Sensing	Automatic	Pilot Operated	N/A cc/min	350 bar	5000 psi	1711 per turn psi	n/a	N/A psi	0.27 kg	C12-3	Pressure Reducing/Relieving	Knob	5500 psi	75 Nm	Mineral-based or synthetic hydraulic fluids	All parts steel. All operating parts hardened steel	ISO 4406 18/16/13, SAE Class 4	-30 to +250 °F	+93 °C	Screw in cartridge valve	0.25 Gal/min	172 bar	500-5000 psi	Nitrile	Screw in cartridge valve	N/A	Knob	30 GAL/MIN, 113.7 L/MIN	500-5000 PSI, 34.5-350 BAR
PRH121K50V	Quote Required	Quote Required	TBD		Fluorocarbon	n/a	350 bar	Hydraulic Cartridge Systems Division	Hydraulic Systems Division	45-2000 SSU (6 to 420 cSt)	-15 °F	113.7 L/min	113.7 L/min	Pressure Sensing	Automatic	Pilot Operated	N/A cc/min	350 bar	5000 psi	1711 per turn psi	n/a	N/A psi	0.6 lb	C12-3	Pressure Reducing/Relieving	Knob	380 bar	75 Nm	Mineral-based or synthetic hydraulic fluids	All parts steel. All operating parts hardened steel	ISO 4406 18/16/13, SAE Class 4	-15 to +400 °F	+400 °F	Screw in cartridge valve	0.94 L/min	172 bar	500-5000 psi	Fluorocarbon	Screw in cartridge valve	N/A	Knob	30 GAL/MIN, 113.7 L/MIN	500-5000 PSI, 34.5-350 BAR
PRH121S10	Quote Required	Quote Required	TBD		Nitrile	n/a	350 bar	Hydraulic Cartridge Systems Division	Hydraulic Systems Division	45-2000 SSU (6 to 420 cSt)	-30 °F	30 Gal/min	113.7 L/min	Pressure Sensing	Automatic	Pilot Operated	N/A cc/min	5000 psi	1000 psi	334 per turn psi	n/a	N/A psi	0.27 kg	C12-3	Pressure Reducing/Relieving	Screw	5500 psi	75 Nm	Mineral-based or synthetic hydraulic fluids	All parts steel. All operating parts hardened steel	ISO 4406 18/16/13, SAE Class 4	-34 to +121 °C	+93 °C	Screw in cartridge valve	0.25 Gal/min	34.5 bar	100-1000 psi	Nitrile	Screw in cartridge valve	N/A	Screw	30 GAL/MIN, 113.7 L/MIN	100-1000 PSI, 6.9-69 BAR
PRH121S10V	Quote Required	Quote Required	TBD		Fluorocarbon	n/a	5000 psi	Hydraulic Cartridge Systems Division	Hydraulic Systems Division	45-2000 SSU (6 to 420 cSt)	-26 °C	30 Gal/min	30 Gal/min	Pressure Sensing	Automatic	Pilot Operated	N/A cc/min	5000 psi	69 bar	23 per turn bar	n/a	N/A psi	0.6 lb	C12-3	Pressure Reducing/Relieving	Screw	380 bar	56 lb-ft	Mineral-based or synthetic hydraulic fluids	All parts steel. All operating parts hardened steel	ISO 4406 18/16/13, SAE Class 4	-26 to +204 °C	+400 °F	Screw in cartridge valve	0.25 Gal/min	500 psi	6.9-69 bar	Fluorocarbon	Screw in cartridge valve	N/A	Screw	30 GAL/MIN, 113.7 L/MIN	100-1000 PSI, 6.9-69 BAR
PRH121S20	Quote Required	Quote Required	$0.01	EA	Nitrile	n/a	5000	Hydraulic Valve Systems Division	Hydraulic Systems Division	45-2000 SSU (6 to 420 cSt)	-30	30	30	Pressure Sensing	Automatic	Pilot Operated	n/a	5000	2000	539 per turn	n/a	n/a	0.6	C12-3	Pressure Reducing/Relieving	Screw	5500	56	Mineral-based or synthetic hydraulic fluids	All parts steel. All operating parts hardened steel	ISO 4406 18/16/13, SAE Class 4	-30 to +250	+250	Screw in cartridge valve	0.25	1000	200-2000	Nitrile	Screw in cartridge valve	N/A	Screw	30 GAL/MIN, 113.7 L/MIN	200-2000 PSI, 13.8-138 BAR
PRH121S20V	Quote Required	Quote Required	TBD		Fluorocarbon	n/a	5000	Hydraulic Valve Systems Division	Hydraulic Systems Division	45-2000 SSU (6 to 420 cSt)	-15	30	30	Pressure Sensing	Automatic	Pilot Operated	n/a	5000	2000	539 per turn	n/a	n/a	0.6	C12-3	Pressure Reducing/Relieving	Screw	5500	56	Mineral-based or synthetic hydraulic fluids	All parts steel. All operating parts hardened steel	ISO 4406 18/16/13, SAE Class 4	-15 to +400	+400	Screw in cartridge valve	0.25	1000	200-2000	Fluorocarbon	Screw in cartridge valve	N/A	Screw	30 GAL/MIN, 113.7 L/MIN	200-2000 PSI, 13.8-138 BAR
PRH121S30	Quote Required	5 In Stock	$144.19	EA	Nitrile	n/a	5000 psi	Hydraulic Cartridge Systems Division	Hydraulic Systems Division	45-2000 SSU (6 to 420 cSt)	-34 °C	30 Gal/min	30 Gal/min	Pressure Sensing	Automatic	Pilot Operated	N/A cc/min	5000 psi	3000 psi	60 per turn bar	n/a	N/A psi	0.6 lb	C12-3	Pressure Reducing/Relieving	Screw	5500 psi	75 Nm	Mineral-based or synthetic hydraulic fluids	All parts steel. All operating parts hardened steel	ISO 4406 18/16/13, SAE Class 4	-30 to +250 °F	+250 °F	Screw in cartridge valve	0.94 L/min	103.5 bar	20.7-210 bar	Nitrile	Screw in cartridge valve	N/A	Screw	30 GAL/MIN, 113.7 L/MIN	300-3000 PSI, 20.7-210 BAR
PRH121S30V	Quote Required	Quote Required	TBD		Fluorocarbon	n/a	350 bar	Hydraulic Cartridge Systems Division	Hydraulic Systems Division	45-2000 SSU (6 to 420 cSt)	-26 °C	30 Gal/min	113.7 L/min	Pressure Sensing	Automatic	Pilot Operated		350 bar	3000 psi	870 per turn psi	n/a	N/A psi	0.27 kg	C12-3	Pressure Reducing/Relieving	Screw	380 bar	75 Nm	Mineral-based or synthetic hydraulic fluids	All parts steel. All operating parts hardened steel	ISO 4406 18/16/13, SAE Class 4	-15 to +400 °F	+400 °F	Screw in cartridge valve	0.25 Gal/min	103.5 bar	300-3000 psi	Fluorocarbon	Screw in cartridge valve	N/A	Screw	30 GAL/MIN, 113.7 L/MIN	300-3000 PSI, 20.7-210 BAR
PRH121S50	Quote Required	Quote Required	TBD		Nitrile	n/a	5000 psi	Hydraulic Cartridge Systems Division	Hydraulic Systems Division	45-2000 SSU (6 to 420 cSt)	-30 °F	30 Gal/min	113.7 L/min	Pressure Sensing	Automatic	Pilot Operated	N/A cc/min	5000 psi	350 bar	1711 per turn psi	n/a	N/A psi	0.6 lb	C12-3	Pressure Reducing/Relieving	Screw	5500 psi	75 Nm	Mineral-based or synthetic hydraulic fluids	All parts steel. All operating parts hardened steel	ISO 4406 18/16/13, SAE Class 4	-30 to +250 °F	+250 °F	Screw in cartridge valve	0.25 Gal/min	2500 psi	34.5-350 bar	Nitrile	Screw in cartridge valve	N/A	Screw	30 GAL/MIN, 113.7 L/MIN	500-5000 PSI, 34.5-350 BAR
PRH121S50V	Quote Required	Quote Required	TBD		Fluorocarbon	n/a	350 bar	Hydraulic Cartridge Systems Division	Hydraulic Systems Division	45-2000 SSU (6 to 420 cSt)	-26 °C	113.7 L/min	30 Gal/min	Pressure Sensing	Automatic	Pilot Operated	N/A cc/min	5000 psi	350 bar	118 per turn bar	n/a	N/A psi	0.6 lb	C12-3	Pressure Reducing/Relieving	Screw	380 bar	56 lb-ft	Mineral-based or synthetic hydraulic fluids	All parts steel. All operating parts hardened steel	ISO 4406 18/16/13, SAE Class 4	-26 to +204 °C	+204 °C	Screw in cartridge valve	0.94 L/min	2500 psi	34.5-350 bar	Fluorocarbon	Screw in cartridge valve	N/A	Screw	30 GAL/MIN, 113.7 L/MIN	500-5000 PSI, 34.5-350 BAR
PRH121T10	Quote Required	Quote Required	TBD		Nitrile	n/a	5000	Hydraulic Valve Systems Division	Hydraulic Systems Division	45-2000 SSU (6 to 420 cSt)	-30	30	30	Pressure Sensing	Automatic	Pilot Operated	n/a	5000	1000	334 per turn	n/a	n/a	0.6	C12-3	Pressure Reducing/Relieving	Tamper Resistant	5500	56	Mineral-based or synthetic hydraulic fluids	All parts steel. All operating parts hardened steel	ISO 4406 18/16/13, SAE Class 4	-30 to +250	+250	Screw in cartridge valve	0.25	500	100-1000	Nitrile	Screw in cartridge valve	N/A	Tamper Resistant	30 GAL/MIN, 113.7 L/MIN	100-1000 PSI, 6.9-69 BAR
PRH121T10V	Quote Required	Quote Required	TBD		Fluorocarbon	n/a	5000	Hydraulic Valve Systems Division	Hydraulic Systems Division	45-2000 SSU (6 to 420 cSt)	-15	30	30	Pressure Sensing	Automatic	Pilot Operated	n/a	5000	1000	334 per turn	n/a	n/a	0.6	C12-3	Pressure Reducing/Relieving	Tamper Resistant	5500	56	Mineral-based or synthetic hydraulic fluids	All parts steel. All operating parts hardened steel	ISO 4406 18/16/13, SAE Class 4	-15 to +400	+400	Screw in cartridge valve	0.25	500	100-1000	Fluorocarbon	Screw in cartridge valve	N/A	Tamper Resistant	30 GAL/MIN, 113.7 L/MIN	100-1000 PSI, 6.9-69 BAR
PRH121T20	Quote Required	Quote Required	TBD		Nitrile	n/a	5000	Hydraulic Valve Systems Division	Hydraulic Systems Division	45-2000 SSU (6 to 420 cSt)	-30	30	30	Pressure Sensing	Automatic	Pilot Operated	n/a	5000	2000	539 per turn	n/a	n/a	0.6	C12-3	Pressure Reducing/Relieving	Tamper Resistant	5500	56	Mineral-based or synthetic hydraulic fluids	All parts steel. All operating parts hardened steel	ISO 4406 18/16/13, SAE Class 4	-30 to +250	+250	Screw in cartridge valve	0.25	1000	200-2000	Nitrile	Screw in cartridge valve	N/A	Tamper Resistant	30 GAL/MIN, 113.7 L/MIN	200-2000 PSI, 13.8-138 BAR