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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SKU	Availability	Price	Body Material	Weight	Seal Material	Minimum Operating Temperature	Division	Maximum Operating Pressure	Maximum Kinematic Viscosity	Maximum Inlet Pressure Rating	Installation Torque	Maximum Flow Rate	Actuation Type	Function	Operation Type	Adjustment Mechanism	Cavity Size	Port Thread Size	For Fluid Type	Maximum Operating Temperature	Valve Material	Operating Temperature	Filter Efficiency Rating	Mounting Type	Maximum Tank Pressure	Maximum Pressure Setting	Standard Setting Pressure	Cracking Pressure	Pressure Control Range	Reseat Pressure	Flow Rate	Leak Rate	Configuration	Pressure Control Sensitivity	Minimum Operating Pressure	Seal Material	Adjustment Mechanism	Mounting Type	Cracking Pressure	Pressure Control Range	Flow Rate	Maximum Inlet Pressure Rating	Standard Setting Pressure
RD163K10	Backordered	POR	N/A	0.23 kg	Nitrile	-30 °F	Hydraulic Systems Division	3500 psi	45-2000 SSU (6 to 420 cSt)	240 bar	54 Nm	40 Gal/min	Pressure Sensing	Direct Acting	Automatic	Knob	C16-2	n/a	Mineral-based or synthetic hydraulic fluids	+250 °F	All parts steel. All operating parts hardened steel	-30 to +250 °F	ISO 4406 18/16/13, SAE Class 4	Screw in cartridge valve	210 bar	1000 psi	500 psi	N/A psi	13.8-69 bar	80% of pressure setting	151 L/min	.66 @ 75% Crack Pressure cm3/min	Differential Area Relief, Differential Relief w/Reverse Flow Check	7 per turn bar	240 bar	Nitrile	Knob	Screw in cartridge valve	N/A	200-1000 PSI, 13.8-69 BAR	40 GAL/MIN, 151 L/MIN	3500 PSI, 240 BAR	500 PSI, 34.5 BAR
RD163K30	Backordered	POR	N/A	0.5 lb	Nitrile	-30 °F	Hydraulic Systems Division	3500 psi	45-2000 SSU (6 to 420 cSt)	240 bar	54 Nm	40 Gal/min	Pressure Sensing	Direct Acting	Automatic	Knob	C16-2	n/a	Mineral-based or synthetic hydraulic fluids	+121 °C	All parts steel. All operating parts hardened steel	-34 to +121 °C	ISO 4406 18/16/13, SAE Class 4	Screw in cartridge valve	3000 psi	3000 psi	103.5 bar	N/A psi	41.4-210 bar	80% of pressure setting	40 Gal/min	10 @ 75% Crack Pressure drops/min	Differential Area Relief, Differential Relief w/Reverse Flow Check	204 per turn psi	240 bar	Nitrile	Knob	Screw in cartridge valve	N/A	600-3000 PSI, 41.4-210 BAR	40 GAL/MIN, 151 L/MIN	3500 PSI, 240 BAR	1500 PSI, 103.5 BAR
RD163S10	11 in stock	POR	N/A	0.5 lb	Nitrile	-30 °F	Hydraulic Systems Division	3500 psi	45-2000 SSU (6 to 420 cSt)	3500 psi	40 lb-ft	151 L/min	Pressure Sensing	Direct Acting	Automatic	Screw	C16-2	n/a	Mineral-based or synthetic hydraulic fluids	+250 °F	All parts steel. All operating parts hardened steel	-30 to +250 °F	ISO 4406 18/16/13, SAE Class 4	Screw in cartridge valve	210 bar	69 bar	34.5 bar	N/A psi	13.8-69 bar	80% of pressure setting	40 Gal/min	.66 @ 75% Crack Pressure cm3/min	Differential Area Relief, Differential Relief w/Reverse Flow Check	104 per turn psi	240 bar	Nitrile	Screw	Screw in cartridge valve	N/A	200-1000 PSI, 13.8-69 BAR	40 GAL/MIN, 151 L/MIN	3500 PSI, 240 BAR	500 PSI, 34.5 BAR
RD163S10V	Backordered	POR	N/A	0.23 kg	Fluorocarbon	-15 °F	Hydraulic Systems Division	3500 psi	45-2000 SSU (6 to 420 cSt)	3500 psi	40 lb-ft	151 L/min	Pressure Sensing	Direct Acting	Automatic	Screw	C16-2	n/a	Mineral-based or synthetic hydraulic fluids	+400 °F	All parts steel. All operating parts hardened steel	-15 to +400 °F	ISO 4406 18/16/13, SAE Class 4	Screw in cartridge valve	210 bar	69 bar	500 psi	N/A psi	13.8-69 bar	80% of pressure setting	151 L/min	10 @ 75% Crack Pressure drops/min	Differential Area Relief, Differential Relief w/Reverse Flow Check	7 per turn bar	240 bar	Fluorocarbon	Screw	Screw in cartridge valve	N/A	200-1000 PSI, 13.8-69 BAR	40 GAL/MIN, 151 L/MIN	3500 PSI, 240 BAR	500 PSI, 34.5 BAR
RD163S30	Backordered	$244.20	N/A	0.5 lb	Nitrile	-30 °F	Hydraulic Systems Division	3500 psi	45-2000 SSU (6 to 420 cSt)	240 bar	54 Nm	40 Gal/min	Pressure Sensing	Direct Acting	Automatic	Screw	C16-2	n/a	Mineral-based or synthetic hydraulic fluids	+250 °F	All parts steel. All operating parts hardened steel	-34 to +121 °C	ISO 4406 18/16/13, SAE Class 4	Screw in cartridge valve	3000 psi	3000 psi	103.5 bar	N/A psi	600-3000 psi	80% of pressure setting	40 Gal/min	.66 @ 75% Crack Pressure cm3/min	Differential Area Relief, Differential Relief w/Reverse Flow Check	14 per turn bar	240 bar	Nitrile	Screw	Screw in cartridge valve	N/A	600-3000 PSI, 41.4-210 BAR	40 GAL/MIN, 151 L/MIN	3500 PSI, 240 BAR	1500 PSI, 103.5 BAR
RD163S30V	Backordered	POR	N/A	0.23 kg	Fluorocarbon	-26 °C	Hydraulic Systems Division	3500 psi	45-2000 SSU (6 to 420 cSt)	240 bar	40 lb-ft	40 Gal/min	Pressure Sensing	Direct Acting	Automatic	Screw	C16-2	n/a	Mineral-based or synthetic hydraulic fluids	+204 °C	All parts steel. All operating parts hardened steel	-15 to +400 °F	ISO 4406 18/16/13, SAE Class 4	Screw in cartridge valve	3000 psi	3000 psi	1500 psi	N/A psi	41.4-210 bar	80% of pressure setting	40 Gal/min	.66 @ 75% Crack Pressure cm3/min	Differential Area Relief, Differential Relief w/Reverse Flow Check	204 per turn psi	240 bar	Fluorocarbon	Screw	Screw in cartridge valve	N/A	600-3000 PSI, 41.4-210 BAR	40 GAL/MIN, 151 L/MIN	3500 PSI, 240 BAR	1500 PSI, 103.5 BAR
RD163T10	Backordered	POR	N/A	0.5 lb	Nitrile	-30 °F	Hydraulic Systems Division	3500 psi	45-2000 SSU (6 to 420 cSt)	240 bar	54 Nm	151 L/min	Pressure Sensing	Direct Acting	Automatic	Tamper Resistant	C16-2	n/a	Mineral-based or synthetic hydraulic fluids	+250 °F	All parts steel. All operating parts hardened steel	-30 to +250 °F	ISO 4406 18/16/13, SAE Class 4	Screw in cartridge valve	210 bar	1000 psi	34.5 bar	N/A psi	13.8-69 bar	80% of pressure setting	151 L/min	.66 @ 75% Crack Pressure cm3/min	Differential Area Relief, Differential Relief w/Reverse Flow Check	104 per turn psi	240 bar	Nitrile	Tamper Resistant	Screw in cartridge valve	N/A	200-1000 PSI, 13.8-69 BAR	40 GAL/MIN, 151 L/MIN	3500 PSI, 240 BAR	500 PSI, 34.5 BAR
RD163T30	Backordered	POR	N/A	0.23 kg	Nitrile	-34 °C	Hydraulic Systems Division	3500 psi	45-2000 SSU (6 to 420 cSt)	3500 psi	54 Nm	151 L/min	Pressure Sensing	Direct Acting	Automatic	Tamper Resistant	C16-2	n/a	Mineral-based or synthetic hydraulic fluids	+250 °F	All parts steel. All operating parts hardened steel	-30 to +250 °F	ISO 4406 18/16/13, SAE Class 4	Screw in cartridge valve	3000 psi	210 bar	103.5 bar	N/A psi	41.4-210 bar	80% of pressure setting	151 L/min	.66 @ 75% Crack Pressure cm3/min	Differential Area Relief, Differential Relief w/Reverse Flow Check	14 per turn bar	240 bar	Nitrile	Tamper Resistant	Screw in cartridge valve	N/A	600-3000 PSI, 41.4-210 BAR	40 GAL/MIN, 151 L/MIN	3500 PSI, 240 BAR	1500 PSI, 103.5 BAR
RDH083K15	Backordered	POR	N/A	0.43 lb	Nitrile	-34 °C	Hydraulic Systems Division	5500 psi	45-2000 SSU (6 to 420 cSt)	5500 psi	31 Nm	45 L/min	Pressure Sensing	Direct Acting	Automatic	Knob	C08-2	n/a	Mineral-based or synthetic hydraulic fluids	+250 °F	All parts steel. All operating parts hardened steel	-34 to +121 °C	ISO 4406 18/16/13, SAE Class 4	Screw in cartridge valve	350 bar	103.5 bar	51.7 bar	N/A psi	6.9-103.5 bar	75% of pressure setting	12 Gal/min	10 @ 75% Crack Pressure drops/min	Differential Area Relief, Differential Relief w/Reverse Flow Check	15 per turn bar	380 bar	Nitrile	Knob	Screw in cartridge valve	N/A	100-1500 PSI, 6.9-103.5 BAR	12 GAL/MIN, 45 L/MIN	5500 PSI, 380 BAR	750 PSI, 51.7 BAR
RDH083K30	Backordered	$91.50	N/A	0.43 lb	Nitrile	-34 °C	Hydraulic Systems Division	5500 psi	45-2000 SSU (6 to 420 cSt)	5500 psi	31 Nm	45 L/min	Pressure Sensing	Direct Acting	Automatic	Knob	C08-2	n/a	Mineral-based or synthetic hydraulic fluids	+121 °C	All parts steel. All operating parts hardened steel	-34 to +121 °C	ISO 4406 18/16/13, SAE Class 4	Screw in cartridge valve	350 bar	210 bar	1500 psi	N/A psi	1000-3000 psi	75% of pressure setting	12 Gal/min	10 @ 75% Crack Pressure drops/min	Differential Area Relief, Differential Relief w/Reverse Flow Check	27 per turn bar	380 bar	Nitrile	Knob	Screw in cartridge valve	N/A	1000-3000 PSI, 69-210 BAR	12 GAL/MIN, 45 L/MIN	5500 PSI, 380 BAR	1500 PSI, 103.5 BAR
RDH083K30V	Backordered	POR	N/A	0.19 kg	Fluorocarbon	-15 °F	Hydraulic Systems Division	5500 psi	45-2000 SSU (6 to 420 cSt)	380 bar	31 Nm	45 L/min	Pressure Sensing	Direct Acting	Automatic	Knob	C08-2	n/a	Mineral-based or synthetic hydraulic fluids	+400 °F	All parts steel. All operating parts hardened steel	-15 to +400 °F	ISO 4406 18/16/13, SAE Class 4	Screw in cartridge valve	350 bar	3000 psi	1500 psi	N/A psi	1000-3000 psi	75% of pressure setting	12 Gal/min	10 @ 75% Crack Pressure drops/min	Differential Area Relief, Differential Relief w/Reverse Flow Check	27 per turn bar	380 bar	Fluorocarbon	Knob	Screw in cartridge valve	N/A	1000-3000 PSI, 69-210 BAR	12 GAL/MIN, 45 L/MIN	5500 PSI, 380 BAR	1500 PSI, 103.5 BAR
RDH083K50	Backordered	POR	N/A	0.43 lb	Nitrile	-30 °F	Hydraulic Systems Division	5500 psi	45-2000 SSU (6 to 420 cSt)	380 bar	31 Nm	12 Gal/min	Pressure Sensing	Direct Acting	Automatic	Knob	C08-2	n/a	Mineral-based or synthetic hydraulic fluids	+250 °F	All parts steel. All operating parts hardened steel	-34 to +121 °C	ISO 4406 18/16/13, SAE Class 4	Screw in cartridge valve	350 bar	350 bar	172 bar	N/A psi	138-350 bar	75% of pressure setting	12 Gal/min	.66 @ 75% Crack Pressure cm3/min	Differential Area Relief, Differential Relief w/Reverse Flow Check	614 per turn psi	380 bar	Nitrile	Knob	Screw in cartridge valve	N/A	2000-5000 PSI, 138-350 BAR	12 GAL/MIN, 45 L/MIN	5500 PSI, 380 BAR	2500 PSI, 172 BAR
RDH083S15	1 in stock	$77.40	N/A	0.19 kg	Nitrile	-34 °C	Hydraulic Systems Division	5500 psi	45-2000 SSU (6 to 420 cSt)	380 bar	31 Nm	12 Gal/min	Pressure Sensing	Direct Acting	Automatic	Screw	C08-2	n/a	Mineral-based or synthetic hydraulic fluids	+250 °F	All parts steel. All operating parts hardened steel	-30 to +250 °F	ISO 4406 18/16/13, SAE Class 4	Screw in cartridge valve	5000 psi	1500 psi	51.7 bar	N/A psi	100-1500 psi	75% of pressure setting	45 L/min	10 @ 75% Crack Pressure drops/min	Differential Area Relief, Differential Relief w/Reverse Flow Check	218 per turn psi	380 bar	Nitrile	Screw	Screw in cartridge valve	N/A	100-1500 PSI, 6.9-103.5 BAR	12 GAL/MIN, 45 L/MIN	5500 PSI, 380 BAR	750 PSI, 51.7 BAR
RDH083S15V	Backordered	POR	N/A	0.19 kg	Fluorocarbon	-26 °C	Hydraulic Systems Division	5500 psi	45-2000 SSU (6 to 420 cSt)	380 bar	23 lb-ft	12 Gal/min	Pressure Sensing	Direct Acting	Automatic	Screw	C08-2	n/a	Mineral-based or synthetic hydraulic fluids	+204 °C	All parts steel. All operating parts hardened steel	-15 to +400 °F	ISO 4406 18/16/13, SAE Class 4	Screw in cartridge valve	5000 psi	1500 psi	750 psi	N/A psi	6.9-103.5 bar	75% of pressure setting	45 L/min	.66 @ 75% Crack Pressure cm3/min	Differential Area Relief, Differential Relief w/Reverse Flow Check	218 per turn psi	380 bar	Fluorocarbon	Screw	Screw in cartridge valve	N/A	100-1500 PSI, 6.9-103.5 BAR	12 GAL/MIN, 45 L/MIN	5500 PSI, 380 BAR	750 PSI, 51.7 BAR
RDH083S30	40 in stock	$77.40	N/A	0.19 kg	Nitrile	-30 °F	Hydraulic Systems Division	5500 psi	45-2000 SSU (6 to 420 cSt)	380 bar	23 lb-ft	12 Gal/min	Pressure Sensing	Direct Acting	Automatic	Screw	C08-2	n/a	Mineral-based or synthetic hydraulic fluids	+250 °F	All parts steel. All operating parts hardened steel	-34 to +121 °C	ISO 4406 18/16/13, SAE Class 4	Screw in cartridge valve	5000 psi	210 bar	103.5 bar	N/A psi	69-210 bar	75% of pressure setting	45 L/min	.66 @ 75% Crack Pressure cm3/min	Differential Area Relief, Differential Relief w/Reverse Flow Check	27 per turn bar	380 bar	Nitrile	Screw	Screw in cartridge valve	N/A	1000-3000 PSI, 69-210 BAR	12 GAL/MIN, 45 L/MIN	5500 PSI, 380 BAR	1500 PSI, 103.5 BAR
RDH083S30V	Backordered	POR	N/A	0.19 kg	Fluorocarbon	-15 °F	Hydraulic Systems Division	5500 psi	45-2000 SSU (6 to 420 cSt)	380 bar	23 lb-ft	12 Gal/min	Pressure Sensing	Direct Acting	Automatic	Screw	C08-2	n/a	Mineral-based or synthetic hydraulic fluids	+400 °F	All parts steel. All operating parts hardened steel	-26 to +204 °C	ISO 4406 18/16/13, SAE Class 4	Screw in cartridge valve	5000 psi	3000 psi	103.5 bar	N/A psi	69-210 bar	75% of pressure setting	45 L/min	.66 @ 75% Crack Pressure cm3/min	Differential Area Relief, Differential Relief w/Reverse Flow Check	396 per turn psi	380 bar	Fluorocarbon	Screw	Screw in cartridge valve	N/A	1000-3000 PSI, 69-210 BAR	12 GAL/MIN, 45 L/MIN	5500 PSI, 380 BAR	1500 PSI, 103.5 BAR
RDH083S50	11 in stock	$77.40	N/A	0.19 kg	Nitrile	-34 °C	Hydraulic Systems Division	5500 psi	45-2000 SSU (6 to 420 cSt)	380 bar	31 Nm	12 Gal/min	Pressure Sensing	Direct Acting	Automatic	Screw	C08-2	n/a	Mineral-based or synthetic hydraulic fluids	+121 °C	All parts steel. All operating parts hardened steel	-30 to +250 °F	ISO 4406 18/16/13, SAE Class 4	Screw in cartridge valve	350 bar	350 bar	2500 psi	N/A psi	2000-5000 psi	75% of pressure setting	45 L/min	.66 @ 75% Crack Pressure cm3/min	Differential Area Relief, Differential Relief w/Reverse Flow Check	42 per turn bar	380 bar	Nitrile	Screw	Screw in cartridge valve	N/A	2000-5000 PSI, 138-350 BAR	12 GAL/MIN, 45 L/MIN	5500 PSI, 380 BAR	2500 PSI, 172 BAR
RDH083S50V	Backordered	POR	N/A	0.43 lb	Fluorocarbon	-26 °C	Hydraulic Systems Division	5500 psi	45-2000 SSU (6 to 420 cSt)	5500 psi	31 Nm	12 Gal/min	Pressure Sensing	Direct Acting	Automatic	Screw	C08-2	n/a	Mineral-based or synthetic hydraulic fluids	+400 °F	All parts steel. All operating parts hardened steel	-26 to +204 °C	ISO 4406 18/16/13, SAE Class 4	Screw in cartridge valve	350 bar	5000 psi	2500 psi	N/A psi	138-350 bar	75% of pressure setting	45 L/min	.66 @ 75% Crack Pressure cm3/min	Differential Area Relief, Differential Relief w/Reverse Flow Check	614 per turn psi	380 bar	Fluorocarbon	Screw	Screw in cartridge valve	N/A	2000-5000 PSI, 138-350 BAR	12 GAL/MIN, 45 L/MIN	5500 PSI, 380 BAR	2500 PSI, 172 BAR
RDH083T15	Backordered	POR	N/A	0.19 kg	Nitrile	-34 °C	Hydraulic Systems Division	5500 psi	45-2000 SSU (6 to 420 cSt)	5500 psi	31 Nm	45 L/min	Pressure Sensing	Direct Acting	Automatic	Tamper Resistant	C08-2	n/a	Mineral-based or synthetic hydraulic fluids	+121 °C	All parts steel. All operating parts hardened steel	-30 to +250 °F	ISO 4406 18/16/13, SAE Class 4	Screw in cartridge valve	5000 psi	1500 psi	750 psi	N/A psi	6.9-103.5 bar	75% of pressure setting	45 L/min	.66 @ 75% Crack Pressure cm3/min	Differential Area Relief, Differential Relief w/Reverse Flow Check	15 per turn bar	380 bar	Nitrile	Tamper Resistant	Screw in cartridge valve	N/A	100-1500 PSI, 6.9-103.5 BAR	12 GAL/MIN, 45 L/MIN	5500 PSI, 380 BAR	750 PSI, 51.7 BAR
RDH083T30	Backordered	POR	N/A	0.43 lb	Nitrile	-34 °C	Hydraulic Systems Division	5500 psi	45-2000 SSU (6 to 420 cSt)	380 bar	31 Nm	12 Gal/min	Pressure Sensing	Direct Acting	Automatic	Tamper Resistant	C08-2	n/a	Mineral-based or synthetic hydraulic fluids	+121 °C	All parts steel. All operating parts hardened steel	-30 to +250 °F	ISO 4406 18/16/13, SAE Class 4	Screw in cartridge valve	350 bar	210 bar	1500 psi	N/A psi	1000-3000 psi	75% of pressure setting	45 L/min	.66 @ 75% Crack Pressure cm3/min	Differential Area Relief, Differential Relief w/Reverse Flow Check	27 per turn bar	380 bar	Nitrile	Tamper Resistant	Screw in cartridge valve	N/A	1000-3000 PSI, 69-210 BAR	12 GAL/MIN, 45 L/MIN	5500 PSI, 380 BAR	1500 PSI, 103.5 BAR

Direct Acting Differential Area Relief Valves

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