Direct Acting Differential Area Relief 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 selection of differential area relief valves provide excellent pressure control in applications where a fast acting, low leakage relief valves are needed with operating pressures up to 380 bar (5500 psi) and flows up to 151 lpm (40 gpm) through a wide selectin of cartridge sizes. Unlike the direct acting family of relief valves, Parker's differential area relief valves are designed to have the pressure controlled at port 2 of the cavity. This ensures low leakage across the valve, essential in some holding applications. Designed using industry common cavities, Parker’s line of differential area reliefs can easily be used in various mobile and industrial system applications.

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

Features/Benefits:
• Fast acting differential area reliefs for high flow capacity
• Low leak spherical poppets
• High flow capacity
• Mechanical stops eliminate spring solidification
• All external parts zinc plated

Applications:
• Port relief
• Swing relief
• Motor braking
• Cross port relief applications

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Part No.	Availability	Partner Available	Price	UOM	Body Material	Maximum Operating Pressure	Division	Maximum Kinematic Viscosity	Minimum Operating Temperature	Maximum Operating Temperature	Weight	Function	Actuation Type	Maximum Pressure Setting	Operation Type	Adjustment Mechanism	Cavity Size	Maximum Tank Pressure	Port Thread Size	Seal Material	Maximum Flow Rate	Maximum Inlet Pressure Rating	For Fluid Type	Valve Material	Filter Efficiency Rating	Mounting Type	Operating Temperature	Flow Rate	Installation Torque	Standard Setting Pressure	Cracking Pressure	Reseat Pressure	Configuration	Leak Rate	Pressure Control Range	Minimum Operating Pressure	Pressure Control Sensitivity	Adjustment Mechanism	Mounting Type	Cracking Pressure	Seal Material	Flow Rate	Maximum Inlet Pressure Rating	Pressure Control Range	Standard Setting Pressure
RDH103K30	Quote Required	Quote Required	TBD		n/a	5500 psi	Hydraulic Systems Division	45-2000 SSU (6 to 420 cSt)	-35 °F	+200 °F	0.5 lb	Direct Acting	Pressure Sensing	3000 psi	Automatic	Knob	C10-2	5000 psi	n/a	D-Ring (Standard)	20 Gal/min	380 bar	Mineral-based or synthetic hydraulic fluids	All parts steel. All operating parts hardened steel	ISO 4406 18/16/13, SAE Class 4	Screw in cartridge valve	-35 to +200 °F	75 L/min	69-75 Nm	103.5 bar	N/A psi	85% of pressure setting	Differential Area Relief, Differential Relief w/Reverse Flow Check	.33 @ 75% Crack Pressure cm3/min	69-210 bar	380 bar	25.8 per turn bar	Knob	Screw in cartridge valve	N/A	D-Ring (Standard)	20 GAL/MIN, 75 L/MIN	5500 PSI, 380 BAR	500-3000 PSI, 34.5-210 BAR	1500 PSI, 103.5 BAR
RDH103K30N	Quote Required	Quote Required	TBD		n/a	5500 psi	Hydraulic Systems Division	45-2000 SSU (6 to 420 cSt)	-34 °C	+121 °C	0.5 lb	Direct Acting	Pressure Sensing	3000 psi	Automatic	Knob	C10-2	5000 psi	n/a	Nitrile	75 L/min	380 bar	Mineral-based or synthetic hydraulic fluids	All parts steel. All operating parts hardened steel	ISO 4406 18/16/13, SAE Class 4	Screw in cartridge valve	-34 to +121 °C	75 L/min	69-75 Nm	103.5 bar	N/A psi	85% of pressure setting	Differential Area Relief, Differential Relief w/Reverse Flow Check	5 @ 75% Crack Pressure drops/min	1000-3000 psi	380 bar	375 per turn psi	Knob	Screw in cartridge valve	N/A	Nitrile	20 GAL/MIN, 75 L/MIN	5500 PSI, 380 BAR	500-3000 PSI, 34.5-210 BAR	1500 PSI, 103.5 BAR
RDH103K30V	Quote Required	Quote Required	TBD		n/a	5500 psi	Hydraulic Systems Division	45-2000 SSU (6 to 420 cSt)	-15 °F	+400 °F	0.23 kg	Direct Acting	Pressure Sensing	210 bar	Automatic	Knob	C10-2	350 bar	n/a	Fluorocarbon	20 Gal/min	5500 psi	Mineral-based or synthetic hydraulic fluids	All parts steel. All operating parts hardened steel	ISO 4406 18/16/13, SAE Class 4	Screw in cartridge valve	-15 to +400 °F	20 Gal/min	69-75 Nm	1500 psi	N/A psi	85% of pressure setting	Differential Area Relief, Differential Relief w/Reverse Flow Check	.33 @ 75% Crack Pressure cm3/min	1000-3000 psi	380 bar	375 per turn psi	Knob	Screw in cartridge valve	N/A	Fluorocarbon	20 GAL/MIN, 75 L/MIN	5500 PSI, 380 BAR	500-3000 PSI, 34.5-210 BAR	1500 PSI, 103.5 BAR
RDH103K50	Quote Required	2 Limited Stock	$51.38	EA	n/a	5500 psi	Hydraulic Systems Division	45-2000 SSU (6 to 420 cSt)	-35 °F	+93 °C	0.5 lb	Direct Acting	Pressure Sensing	5000 psi	Automatic	Knob	C10-2	5000 psi	n/a	D-Ring (Standard)	20 Gal/min	380 bar	Mineral-based or synthetic hydraulic fluids	All parts steel. All operating parts hardened steel	ISO 4406 18/16/13, SAE Class 4	Screw in cartridge valve	-37 to +93 °C	20 Gal/min	51-55 lb-ft	172 bar	N/A psi	85% of pressure setting	Differential Area Relief, Differential Relief w/Reverse Flow Check	.33 @ 75% Crack Pressure cm3/min	2000-5000 psi	380 bar	589 per turn psi	Knob	Screw in cartridge valve	N/A	D-Ring (Standard)	20 GAL/MIN, 75 L/MIN	5500 PSI, 380 BAR	500-5000 PSI, 34.5-350 BAR	2500 PSI, 172 BAR
RDH103K50N	Quote Required	Quote Required	TBD		n/a	5500	Hydraulic Systems Division	45-2000 SSU (6 to 420 cSt)	-30	+250	0.5	Direct Acting	Pressure Sensing	5000	Automatic	Knob	C10-2	5000	n/a	Nitrile	20	5500	Mineral-based or synthetic hydraulic fluids	All parts steel. All operating parts hardened steel	ISO 4406 18/16/13, SAE Class 4	Screw in cartridge valve	-30 to +250	20	51-55	2500	n/a	85% of pressure setting	Differential Area Relief, Differential Relief w/Reverse Flow Check	5 @ 75% Crack Pressure	2000-5000	380	589 per turn	Knob	Screw in cartridge valve	N/A	Nitrile	20 GAL/MIN, 75 L/MIN	5500 PSI, 380 BAR	500-5000 PSI, 34.5-350 BAR	2500 PSI, 172 BAR
RDH103K50V	Quote Required	Quote Required	TBD		n/a	5500 psi	Hydraulic Systems Division	45-2000 SSU (6 to 420 cSt)	-15 °F	+204 °C	0.5 lb	Direct Acting	Pressure Sensing	350 bar	Automatic	Knob	C10-2	350 bar	n/a	Fluorocarbon	75 L/min	5500 psi	Mineral-based or synthetic hydraulic fluids	All parts steel. All operating parts hardened steel	ISO 4406 18/16/13, SAE Class 4	Screw in cartridge valve	-15 to +400 °F	75 L/min	51-55 lb-ft	2500 psi	N/A psi	85% of pressure setting	Differential Area Relief, Differential Relief w/Reverse Flow Check	.33 @ 75% Crack Pressure cm3/min	2000-5000 psi	380 bar	589 per turn psi	Knob	Screw in cartridge valve	N/A	Fluorocarbon	20 GAL/MIN, 75 L/MIN	5500 PSI, 380 BAR	500-5000 PSI, 34.5-350 BAR	2500 PSI, 172 BAR
RDH103N10	Quote Required	Quote Required	TBD		n/a	5500	Hydraulic Systems Division	45-2000 SSU (6 to 420 cSt)	-35	+200	0.5	Direct Acting	Pressure Sensing	1000	Automatic	Non-Adjustable	C10-2	5000	n/a	D-Ring (Standard)	20	5500	Mineral-based or synthetic hydraulic fluids	All parts steel. All operating parts hardened steel	ISO 4406 18/16/13, SAE Class 4	Screw in cartridge valve	-35 to +200	20	51-55	500	n/a	85% of pressure setting	Differential Area Relief, Differential Relief w/Reverse Flow Check	5 @ 75% Crack Pressure	100-1000	380	n/a	Non-Adjustable	Screw in cartridge valve	N/A	D-Ring (Standard)	20 GAL/MIN, 75 L/MIN	5500 PSI, 380 BAR	100-1000 PSI, 6.9-69 BAR	500 PSI, 34.5 BAR
RDH103N10N	Quote Required	Quote Required	TBD		n/a	5500	Hydraulic Systems Division	45-2000 SSU (6 to 420 cSt)	-30	+250	0.5	Direct Acting	Pressure Sensing	1000	Automatic	Non-Adjustable	C10-2	5000	n/a	Nitrile	20	5500	Mineral-based or synthetic hydraulic fluids	All parts steel. All operating parts hardened steel	ISO 4406 18/16/13, SAE Class 4	Screw in cartridge valve	-30 to +250	20	51-55	500	n/a	85% of pressure setting	Differential Area Relief, Differential Relief w/Reverse Flow Check	5 @ 75% Crack Pressure	100-1000	380	n/a	Non-Adjustable	Screw in cartridge valve	N/A	Nitrile	20 GAL/MIN, 75 L/MIN	5500 PSI, 380 BAR	100-1000 PSI, 6.9-69 BAR	500 PSI, 34.5 BAR
RDH103N10V	Quote Required	Quote Required	TBD		n/a	5500	Hydraulic Systems Division	45-2000 SSU (6 to 420 cSt)	-15	+400	0.5	Direct Acting	Pressure Sensing	1000	Automatic	Non-Adjustable	C10-2	5000	n/a	Fluorocarbon	20	5500	Mineral-based or synthetic hydraulic fluids	All parts steel. All operating parts hardened steel	ISO 4406 18/16/13, SAE Class 4	Screw in cartridge valve	-15 to +400	20	51-55	500	n/a	85% of pressure setting	Differential Area Relief, Differential Relief w/Reverse Flow Check	5 @ 75% Crack Pressure	100-1000	380	n/a	Non-Adjustable	Screw in cartridge valve	N/A	Fluorocarbon	20 GAL/MIN, 75 L/MIN	5500 PSI, 380 BAR	100-1000 PSI, 6.9-69 BAR	500 PSI, 34.5 BAR
RDH103N20	Quote Required	Quote Required	TBD		n/a	5500	Hydraulic Systems Division	45-2000 SSU (6 to 420 cSt)	-35	+200	0.5	Direct Acting	Pressure Sensing	2000	Automatic	Non-Adjustable	C10-2	5000	n/a	D-Ring (Standard)	20	5500	Mineral-based or synthetic hydraulic fluids	All parts steel. All operating parts hardened steel	ISO 4406 18/16/13, SAE Class 4	Screw in cartridge valve	-35 to +200	20	51-55	1000	n/a	85% of pressure setting	Differential Area Relief, Differential Relief w/Reverse Flow Check	5 @ 75% Crack Pressure	500-2000	380	n/a	Non-Adjustable	Screw in cartridge valve	N/A	D-Ring (Standard)	20 GAL/MIN, 75 L/MIN	5500 PSI, 380 BAR	500-2000 PSI, 34.5-138 BAR	1000 PSI, 69 BAR
RDH103N20N	Quote Required	Quote Required	TBD		n/a	5500	Hydraulic Systems Division	45-2000 SSU (6 to 420 cSt)	-30	+250	0.5	Direct Acting	Pressure Sensing	2000	Automatic	Non-Adjustable	C10-2	5000	n/a	Nitrile	20	5500	Mineral-based or synthetic hydraulic fluids	All parts steel. All operating parts hardened steel	ISO 4406 18/16/13, SAE Class 4	Screw in cartridge valve	-30 to +250	20	51-55	1000	n/a	85% of pressure setting	Differential Area Relief, Differential Relief w/Reverse Flow Check	5 @ 75% Crack Pressure	500-2000	380	n/a	Non-Adjustable	Screw in cartridge valve	N/A	Nitrile	20 GAL/MIN, 75 L/MIN	5500 PSI, 380 BAR	500-2000 PSI, 34.5-138 BAR	1000 PSI, 69 BAR
RDH103N20V	Quote Required	Quote Required	TBD		n/a	5500	Hydraulic Systems Division	45-2000 SSU (6 to 420 cSt)	-15	+400	0.5	Direct Acting	Pressure Sensing	2000	Automatic	Non-Adjustable	C10-2	5000	n/a	Fluorocarbon	20	5500	Mineral-based or synthetic hydraulic fluids	All parts steel. All operating parts hardened steel	ISO 4406 18/16/13, SAE Class 4	Screw in cartridge valve	-15 to +400	20	51-55	1000	n/a	85% of pressure setting	Differential Area Relief, Differential Relief w/Reverse Flow Check	5 @ 75% Crack Pressure	500-2000	380	n/a	Non-Adjustable	Screw in cartridge valve	N/A	Fluorocarbon	20 GAL/MIN, 75 L/MIN	5500 PSI, 380 BAR	500-2000 PSI, 34.5-138 BAR	1000 PSI, 69 BAR
RDH103N30	Quote Required	Quote Required	TBD		n/a	5500	Hydraulic Systems Division	45-2000 SSU (6 to 420 cSt)	-35	+200	0.5	Direct Acting	Pressure Sensing	3000	Automatic	Non-Adjustable	C10-2	5000	n/a	D-Ring (Standard)	20	5500	Mineral-based or synthetic hydraulic fluids	All parts steel. All operating parts hardened steel	ISO 4406 18/16/13, SAE Class 4	Screw in cartridge valve	-35 to +200	20	51-55	1500	n/a	85% of pressure setting	Differential Area Relief, Differential Relief w/Reverse Flow Check	5 @ 75% Crack Pressure	1000-3000	380	n/a	Non-Adjustable	Screw in cartridge valve	N/A	D-Ring (Standard)	20 GAL/MIN, 75 L/MIN	5500 PSI, 380 BAR	500-3000 PSI, 34.5-210 BAR	1500 PSI, 103.5 BAR
RDH103N30N	Quote Required	Quote Required	TBD		n/a	5500	Hydraulic Systems Division	45-2000 SSU (6 to 420 cSt)	-30	+250	0.5	Direct Acting	Pressure Sensing	3000	Automatic	Non-Adjustable	C10-2	5000	n/a	Nitrile	20	5500	Mineral-based or synthetic hydraulic fluids	All parts steel. All operating parts hardened steel	ISO 4406 18/16/13, SAE Class 4	Screw in cartridge valve	-30 to +250	20	51-55	1500	n/a	85% of pressure setting	Differential Area Relief, Differential Relief w/Reverse Flow Check	5 @ 75% Crack Pressure	1000-3000	380	n/a	Non-Adjustable	Screw in cartridge valve	N/A	Nitrile	20 GAL/MIN, 75 L/MIN	5500 PSI, 380 BAR	500-3000 PSI, 34.5-210 BAR	1500 PSI, 103.5 BAR
RDH103N30V	Quote Required	Quote Required	TBD		n/a	5500	Hydraulic Systems Division	45-2000 SSU (6 to 420 cSt)	-15	+400	0.5	Direct Acting	Pressure Sensing	3000	Automatic	Non-Adjustable	C10-2	5000	n/a	Fluorocarbon	20	5500	Mineral-based or synthetic hydraulic fluids	All parts steel. All operating parts hardened steel	ISO 4406 18/16/13, SAE Class 4	Screw in cartridge valve	-15 to +400	20	51-55	1500	n/a	85% of pressure setting	Differential Area Relief, Differential Relief w/Reverse Flow Check	5 @ 75% Crack Pressure	1000-3000	380	n/a	Non-Adjustable	Screw in cartridge valve	N/A	Fluorocarbon	20 GAL/MIN, 75 L/MIN	5500 PSI, 380 BAR	500-3000 PSI, 34.5-210 BAR	1500 PSI, 103.5 BAR
RDH103N50	Quote Required	Quote Required	TBD		n/a	5500	Hydraulic Systems Division	45-2000 SSU (6 to 420 cSt)	-35	+200	0.5	Direct Acting	Pressure Sensing	5000	Automatic	Non-Adjustable	C10-2	5000	n/a	D-Ring (Standard)	20	5500	Mineral-based or synthetic hydraulic fluids	All parts steel. All operating parts hardened steel	ISO 4406 18/16/13, SAE Class 4	Screw in cartridge valve	-35 to +200	20	51-55	2500	n/a	85% of pressure setting	Differential Area Relief, Differential Relief w/Reverse Flow Check	5 @ 75% Crack Pressure	2000-5000	380	n/a	Non-Adjustable	Screw in cartridge valve	N/A	D-Ring (Standard)	20 GAL/MIN, 75 L/MIN	5500 PSI, 380 BAR	500-5000 PSI, 34.5-350 BAR	2500 PSI, 172 BAR
RDH103N50N	Quote Required	Quote Required	TBD		n/a	5500	Hydraulic Systems Division	45-2000 SSU (6 to 420 cSt)	-30	+250	0.5	Direct Acting	Pressure Sensing	5000	Automatic	Non-Adjustable	C10-2	5000	n/a	Nitrile	20	5500	Mineral-based or synthetic hydraulic fluids	All parts steel. All operating parts hardened steel	ISO 4406 18/16/13, SAE Class 4	Screw in cartridge valve	-30 to +250	20	51-55	2500	n/a	85% of pressure setting	Differential Area Relief, Differential Relief w/Reverse Flow Check	5 @ 75% Crack Pressure	2000-5000	380	n/a	Non-Adjustable	Screw in cartridge valve	N/A	Nitrile	20 GAL/MIN, 75 L/MIN	5500 PSI, 380 BAR	500-5000 PSI, 34.5-350 BAR	2500 PSI, 172 BAR
RDH103N50V	Quote Required	Quote Required	TBD		n/a	5500	Hydraulic Systems Division	45-2000 SSU (6 to 420 cSt)	-15	+400	0.5	Direct Acting	Pressure Sensing	5000	Automatic	Non-Adjustable	C10-2	5000	n/a	Fluorocarbon	20	5500	Mineral-based or synthetic hydraulic fluids	All parts steel. All operating parts hardened steel	ISO 4406 18/16/13, SAE Class 4	Screw in cartridge valve	-15 to +400	20	51-55	2500	n/a	85% of pressure setting	Differential Area Relief, Differential Relief w/Reverse Flow Check	5 @ 75% Crack Pressure	2000-5000	380	n/a	Non-Adjustable	Screw in cartridge valve	N/A	Fluorocarbon	20 GAL/MIN, 75 L/MIN	5500 PSI, 380 BAR	500-5000 PSI, 34.5-350 BAR	2500 PSI, 172 BAR
RDH103S10	Quote Required	Quote Required	$40.31	EA	n/a	5500 psi	Hydraulic Systems Division	45-2000 SSU (6 to 420 cSt)	-35 °F	+93 °C	0.5 lb	Direct Acting	Pressure Sensing	1000 psi	Automatic	Screw	C10-2	350 bar	n/a	D-Ring (Standard)	75 L/min	5500 psi	Mineral-based or synthetic hydraulic fluids	All parts steel. All operating parts hardened steel	ISO 4406 18/16/13, SAE Class 4	Screw in cartridge valve	-35 to +200 °F	75 L/min	69-75 Nm	34.5 bar	N/A psi	85% of pressure setting	Differential Area Relief, Differential Relief w/Reverse Flow Check	5 @ 75% Crack Pressure drops/min	100-1000 psi	380 bar	143 per turn psi	Screw	Screw in cartridge valve	N/A	D-Ring (Standard)	20 GAL/MIN, 75 L/MIN	5500 PSI, 380 BAR	100-1000 PSI, 6.9-69 BAR	500 PSI, 34.5 BAR
RDH103S10N	Quote Required	Quote Required	TBD		n/a	5500 psi	Hydraulic Systems Division	45-2000 SSU (6 to 420 cSt)	-34 °C	+121 °C	0.5 lb	Direct Acting	Pressure Sensing	69 bar	Automatic	Screw	C10-2	5000 psi	n/a	Nitrile	75 L/min	5500 psi	Mineral-based or synthetic hydraulic fluids	All parts steel. All operating parts hardened steel	ISO 4406 18/16/13, SAE Class 4	Screw in cartridge valve	-30 to +250 °F	75 L/min	51-55 lb-ft	34.5 bar	N/A psi	85% of pressure setting	Differential Area Relief, Differential Relief w/Reverse Flow Check	5 @ 75% Crack Pressure drops/min	6.9-69 bar	380 bar	9.8 per turn bar	Screw	Screw in cartridge valve	N/A	Nitrile	20 GAL/MIN, 75 L/MIN	5500 PSI, 380 BAR	100-1000 PSI, 6.9-69 BAR	500 PSI, 34.5 BAR