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	Partner Available	Price	UOM	Seal Material	Adjustment Mechanism	Mounting Type	Cracking Pressure	Pressure Control Range	Flow Rate	Maximum Inlet Pressure Rating	Standard Setting Pressure	Division	Operating Temperature	Flow Rate	Actuation Type	Maximum Flow Rate	Maximum Operating Pressure	Maximum Operating Temperature	Minimum Operating Temperature	Body Material	Seal Material	Weight	Mounting Type	Operation Type	Filter Efficiency Rating	Configuration	For Fluid Type	Function	Maximum Kinematic Viscosity	Port Thread Size	Minimum Operating Pressure	Leak Rate	Cavity Size	Valve Material	Installation Torque	Maximum Inlet Pressure Rating	Adjustment Mechanism	Cracking Pressure	Maximum Pressure Setting	Reseat Pressure	Maximum Tank Pressure	Pressure Control Range	Standard Setting Pressure	Pressure Control Sensitivity
RD163K10	Backordered	Backordered	$207.93/each	EA	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	Hydraulic Systems Division	-30 to +250 °F	151 L/min	Pressure Sensing	40 Gal/min	3500 psi	+250 °F	-30 °F	N/A	Nitrile	0.23 kg	Screw in cartridge valve	Automatic	ISO 4406 18/16/13, SAE Class 4	Differential Area Relief, Differential Relief w/Reverse Flow Check	Mineral-based or synthetic hydraulic fluids	Direct Acting	45-2000 SSU (6 to 420 cSt)	N/A	240 bar	.66 @ 75% Crack Pressure cm3/min	C16-2	All parts steel. All operating parts hardened steel	54 Nm	240 bar	Knob	N/A psi	1000 psi	80% of pressure setting	210 bar	13.8-69 bar	500 psi	7 per turn bar
RD163K30	Backordered	Backordered	$207.93/each	EA	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	Hydraulic Systems Division	-34 to +121 °C	40 Gal/min	Pressure Sensing	40 Gal/min	3500 psi	+121 °C	-30 °F	N/A	Nitrile	0.5 lb	Screw in cartridge valve	Automatic	ISO 4406 18/16/13, SAE Class 4	Differential Area Relief, Differential Relief w/Reverse Flow Check	Mineral-based or synthetic hydraulic fluids	Direct Acting	45-2000 SSU (6 to 420 cSt)	N/A	240 bar	10 @ 75% Crack Pressure drops/min	C16-2	All parts steel. All operating parts hardened steel	54 Nm	240 bar	Knob	N/A psi	3000 psi	80% of pressure setting	3000 psi	41.4-210 bar	103.5 bar	204 per turn psi
RD163S10	Backordered	Backordered	$186.62/each	EA	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	Hydraulic Systems Division	-30 to +250 °F	40 Gal/min	Pressure Sensing	151 L/min	3500 psi	+250 °F	-30 °F	N/A	Nitrile	0.5 lb	Screw in cartridge valve	Automatic	ISO 4406 18/16/13, SAE Class 4	Differential Area Relief, Differential Relief w/Reverse Flow Check	Mineral-based or synthetic hydraulic fluids	Direct Acting	45-2000 SSU (6 to 420 cSt)	N/A	240 bar	.66 @ 75% Crack Pressure cm3/min	C16-2	All parts steel. All operating parts hardened steel	40 lb-ft	3500 psi	Screw	N/A psi	69 bar	80% of pressure setting	210 bar	13.8-69 bar	34.5 bar	104 per turn psi
RD163S10V	Backordered	Backordered	$205.54/each	EA	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	Hydraulic Systems Division	-15 to +400 °F	151 L/min	Pressure Sensing	151 L/min	3500 psi	+400 °F	-15 °F	N/A	Fluorocarbon	0.23 kg	Screw in cartridge valve	Automatic	ISO 4406 18/16/13, SAE Class 4	Differential Area Relief, Differential Relief w/Reverse Flow Check	Mineral-based or synthetic hydraulic fluids	Direct Acting	45-2000 SSU (6 to 420 cSt)	N/A	240 bar	10 @ 75% Crack Pressure drops/min	C16-2	All parts steel. All operating parts hardened steel	40 lb-ft	3500 psi	Screw	N/A psi	69 bar	80% of pressure setting	210 bar	13.8-69 bar	500 psi	7 per turn bar
RD163S30	Backordered	Backordered	$186.62/each	EA	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	Hydraulic Systems Division	-34 to +121 °C	40 Gal/min	Pressure Sensing	40 Gal/min	3500 psi	+250 °F	-30 °F	N/A	Nitrile	0.5 lb	Screw in cartridge valve	Automatic	ISO 4406 18/16/13, SAE Class 4	Differential Area Relief, Differential Relief w/Reverse Flow Check	Mineral-based or synthetic hydraulic fluids	Direct Acting	45-2000 SSU (6 to 420 cSt)	N/A	240 bar	.66 @ 75% Crack Pressure cm3/min	C16-2	All parts steel. All operating parts hardened steel	54 Nm	240 bar	Screw	N/A psi	3000 psi	80% of pressure setting	3000 psi	600-3000 psi	103.5 bar	14 per turn bar
RD163S30V	Backordered	Backordered	$205.54/each	EA	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	Hydraulic Systems Division	-15 to +400 °F	40 Gal/min	Pressure Sensing	40 Gal/min	3500 psi	+204 °C	-26 °C	N/A	Fluorocarbon	0.23 kg	Screw in cartridge valve	Automatic	ISO 4406 18/16/13, SAE Class 4	Differential Area Relief, Differential Relief w/Reverse Flow Check	Mineral-based or synthetic hydraulic fluids	Direct Acting	45-2000 SSU (6 to 420 cSt)	N/A	240 bar	.66 @ 75% Crack Pressure cm3/min	C16-2	All parts steel. All operating parts hardened steel	40 lb-ft	240 bar	Screw	N/A psi	3000 psi	80% of pressure setting	3000 psi	41.4-210 bar	1500 psi	204 per turn psi
RD163T10	Backordered	Backordered	$209.02/each	EA	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	Hydraulic Systems Division	-30 to +250 °F	151 L/min	Pressure Sensing	151 L/min	3500 psi	+250 °F	-30 °F	N/A	Nitrile	0.5 lb	Screw in cartridge valve	Automatic	ISO 4406 18/16/13, SAE Class 4	Differential Area Relief, Differential Relief w/Reverse Flow Check	Mineral-based or synthetic hydraulic fluids	Direct Acting	45-2000 SSU (6 to 420 cSt)	N/A	240 bar	.66 @ 75% Crack Pressure cm3/min	C16-2	All parts steel. All operating parts hardened steel	54 Nm	240 bar	Tamper Resistant	N/A psi	1000 psi	80% of pressure setting	210 bar	13.8-69 bar	34.5 bar	104 per turn psi
RD163T30	Backordered	Backordered	$209.02/each	EA	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	Hydraulic Systems Division	-30 to +250 °F	151 L/min	Pressure Sensing	151 L/min	3500 psi	+250 °F	-34 °C	N/A	Nitrile	0.23 kg	Screw in cartridge valve	Automatic	ISO 4406 18/16/13, SAE Class 4	Differential Area Relief, Differential Relief w/Reverse Flow Check	Mineral-based or synthetic hydraulic fluids	Direct Acting	45-2000 SSU (6 to 420 cSt)	N/A	240 bar	.66 @ 75% Crack Pressure cm3/min	C16-2	All parts steel. All operating parts hardened steel	54 Nm	3500 psi	Tamper Resistant	N/A psi	210 bar	80% of pressure setting	3000 psi	41.4-210 bar	103.5 bar	14 per turn bar
RDH083K15	Backordered	Backordered	$73.52/each	EA	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	Hydraulic Systems Division	-34 to +121 °C	12 Gal/min	Pressure Sensing	45 L/min	5500 psi	+250 °F	-34 °C	N/A	Nitrile	0.43 lb	Screw in cartridge valve	Automatic	ISO 4406 18/16/13, SAE Class 4	Differential Area Relief, Differential Relief w/Reverse Flow Check	Mineral-based or synthetic hydraulic fluids	Direct Acting	45-2000 SSU (6 to 420 cSt)	N/A	380 bar	10 @ 75% Crack Pressure drops/min	C08-2	All parts steel. All operating parts hardened steel	31 Nm	5500 psi	Knob	N/A psi	103.5 bar	75% of pressure setting	350 bar	6.9-103.5 bar	51.7 bar	15 per turn bar
RDH083K30	Backordered	Backordered	$73.52/each	EA	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	Hydraulic Systems Division	-34 to +121 °C	12 Gal/min	Pressure Sensing	45 L/min	5500 psi	+121 °C	-34 °C	N/A	Nitrile	0.43 lb	Screw in cartridge valve	Automatic	ISO 4406 18/16/13, SAE Class 4	Differential Area Relief, Differential Relief w/Reverse Flow Check	Mineral-based or synthetic hydraulic fluids	Direct Acting	45-2000 SSU (6 to 420 cSt)	N/A	380 bar	10 @ 75% Crack Pressure drops/min	C08-2	All parts steel. All operating parts hardened steel	31 Nm	5500 psi	Knob	N/A psi	210 bar	75% of pressure setting	350 bar	1000-3000 psi	1500 psi	27 per turn bar
RDH083K50	Backordered	Backordered	$73.52/each	EA	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	Hydraulic Systems Division	-34 to +121 °C	12 Gal/min	Pressure Sensing	12 Gal/min	5500 psi	+250 °F	-30 °F	N/A	Nitrile	0.43 lb	Screw in cartridge valve	Automatic	ISO 4406 18/16/13, SAE Class 4	Differential Area Relief, Differential Relief w/Reverse Flow Check	Mineral-based or synthetic hydraulic fluids	Direct Acting	45-2000 SSU (6 to 420 cSt)	N/A	380 bar	.66 @ 75% Crack Pressure cm3/min	C08-2	All parts steel. All operating parts hardened steel	31 Nm	380 bar	Knob	N/A psi	350 bar	75% of pressure setting	350 bar	138-350 bar	172 bar	614 per turn psi
RDH083S15	Backordered	Backordered	$59.38/each	EA	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	Hydraulic Systems Division	-30 to +250 °F	45 L/min	Pressure Sensing	12 Gal/min	5500 psi	+250 °F	-34 °C	N/A	Nitrile	0.19 kg	Screw in cartridge valve	Automatic	ISO 4406 18/16/13, SAE Class 4	Differential Area Relief, Differential Relief w/Reverse Flow Check	Mineral-based or synthetic hydraulic fluids	Direct Acting	45-2000 SSU (6 to 420 cSt)	N/A	380 bar	10 @ 75% Crack Pressure drops/min	C08-2	All parts steel. All operating parts hardened steel	31 Nm	380 bar	Screw	N/A psi	1500 psi	75% of pressure setting	5000 psi	100-1500 psi	51.7 bar	218 per turn psi
RDH083S15V	Backordered	Backordered	$66.56/each	EA	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	Hydraulic Systems Division	-15 to +400 °F	45 L/min	Pressure Sensing	12 Gal/min	5500 psi	+204 °C	-26 °C	N/A	Fluorocarbon	0.19 kg	Screw in cartridge valve	Automatic	ISO 4406 18/16/13, SAE Class 4	Differential Area Relief, Differential Relief w/Reverse Flow Check	Mineral-based or synthetic hydraulic fluids	Direct Acting	45-2000 SSU (6 to 420 cSt)	N/A	380 bar	.66 @ 75% Crack Pressure cm3/min	C08-2	All parts steel. All operating parts hardened steel	23 lb-ft	380 bar	Screw	N/A psi	1500 psi	75% of pressure setting	5000 psi	6.9-103.5 bar	750 psi	218 per turn psi
RDH083S30	Backordered	13 in stock	$77.19/each	EA	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	Hydraulic Systems Division	-34 to +121 °C	45 L/min	Pressure Sensing	12 Gal/min	5500 psi	+250 °F	-30 °F	N/A	Nitrile	0.19 kg	Screw in cartridge valve	Automatic	ISO 4406 18/16/13, SAE Class 4	Differential Area Relief, Differential Relief w/Reverse Flow Check	Mineral-based or synthetic hydraulic fluids	Direct Acting	45-2000 SSU (6 to 420 cSt)	N/A	380 bar	.66 @ 75% Crack Pressure cm3/min	C08-2	All parts steel. All operating parts hardened steel	23 lb-ft	380 bar	Screw	N/A psi	210 bar	75% of pressure setting	5000 psi	69-210 bar	103.5 bar	27 per turn bar
RDH083S30V	Backordered	Backordered	$66.56/each	EA	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	Hydraulic Systems Division	-26 to +204 °C	45 L/min	Pressure Sensing	12 Gal/min	5500 psi	+400 °F	-15 °F	N/A	Fluorocarbon	0.19 kg	Screw in cartridge valve	Automatic	ISO 4406 18/16/13, SAE Class 4	Differential Area Relief, Differential Relief w/Reverse Flow Check	Mineral-based or synthetic hydraulic fluids	Direct Acting	45-2000 SSU (6 to 420 cSt)	N/A	380 bar	.66 @ 75% Crack Pressure cm3/min	C08-2	All parts steel. All operating parts hardened steel	23 lb-ft	380 bar	Screw	N/A psi	3000 psi	75% of pressure setting	5000 psi	69-210 bar	103.5 bar	396 per turn psi
RDH083S50	Backordered	16 in stock	$77.19/each	EA	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	Hydraulic Systems Division	-30 to +250 °F	45 L/min	Pressure Sensing	12 Gal/min	5500 psi	+121 °C	-34 °C	N/A	Nitrile	0.19 kg	Screw in cartridge valve	Automatic	ISO 4406 18/16/13, SAE Class 4	Differential Area Relief, Differential Relief w/Reverse Flow Check	Mineral-based or synthetic hydraulic fluids	Direct Acting	45-2000 SSU (6 to 420 cSt)	N/A	380 bar	.66 @ 75% Crack Pressure cm3/min	C08-2	All parts steel. All operating parts hardened steel	31 Nm	380 bar	Screw	N/A psi	350 bar	75% of pressure setting	350 bar	2000-5000 psi	2500 psi	42 per turn bar
RDH083S50V	Backordered	Backordered	$66.56/each	EA	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	Hydraulic Systems Division	-26 to +204 °C	45 L/min	Pressure Sensing	12 Gal/min	5500 psi	+400 °F	-26 °C	N/A	Fluorocarbon	0.43 lb	Screw in cartridge valve	Automatic	ISO 4406 18/16/13, SAE Class 4	Differential Area Relief, Differential Relief w/Reverse Flow Check	Mineral-based or synthetic hydraulic fluids	Direct Acting	45-2000 SSU (6 to 420 cSt)	N/A	380 bar	.66 @ 75% Crack Pressure cm3/min	C08-2	All parts steel. All operating parts hardened steel	31 Nm	5500 psi	Screw	N/A psi	5000 psi	75% of pressure setting	350 bar	138-350 bar	2500 psi	614 per turn psi
RDH083T15	Backordered	Backordered	$73.08/each	EA	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	Hydraulic Systems Division	-30 to +250 °F	45 L/min	Pressure Sensing	45 L/min	5500 psi	+121 °C	-34 °C	N/A	Nitrile	0.19 kg	Screw in cartridge valve	Automatic	ISO 4406 18/16/13, SAE Class 4	Differential Area Relief, Differential Relief w/Reverse Flow Check	Mineral-based or synthetic hydraulic fluids	Direct Acting	45-2000 SSU (6 to 420 cSt)	N/A	380 bar	.66 @ 75% Crack Pressure cm3/min	C08-2	All parts steel. All operating parts hardened steel	31 Nm	5500 psi	Tamper Resistant	N/A psi	1500 psi	75% of pressure setting	5000 psi	6.9-103.5 bar	750 psi	15 per turn bar
RDH083T30	Backordered	Backordered	$73.08/each	EA	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	Hydraulic Systems Division	-30 to +250 °F	45 L/min	Pressure Sensing	12 Gal/min	5500 psi	+121 °C	-34 °C	N/A	Nitrile	0.43 lb	Screw in cartridge valve	Automatic	ISO 4406 18/16/13, SAE Class 4	Differential Area Relief, Differential Relief w/Reverse Flow Check	Mineral-based or synthetic hydraulic fluids	Direct Acting	45-2000 SSU (6 to 420 cSt)	N/A	380 bar	.66 @ 75% Crack Pressure cm3/min	C08-2	All parts steel. All operating parts hardened steel	31 Nm	380 bar	Tamper Resistant	N/A psi	210 bar	75% of pressure setting	350 bar	1000-3000 psi	1500 psi	27 per turn bar
RDH083T30V	Backordered	Backordered	$77.43/each	EA	Fluorocarbon	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	Hydraulic Systems Division	-15 to +400 °F	45 L/min	Pressure Sensing	12 Gal/min	5500 psi	+400 °F	-26 °C	N/A	Fluorocarbon	0.19 kg	Screw in cartridge valve	Automatic	ISO 4406 18/16/13, SAE Class 4	Differential Area Relief, Differential Relief w/Reverse Flow Check	Mineral-based or synthetic hydraulic fluids	Direct Acting	45-2000 SSU (6 to 420 cSt)	N/A	380 bar	10 @ 75% Crack Pressure drops/min	C08-2	All parts steel. All operating parts hardened steel	23 lb-ft	5500 psi	Tamper Resistant	N/A psi	3000 psi	75% of pressure setting	5000 psi	1000-3000 psi	1500 psi	27 per turn bar