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	Seal Material	Body Material	Division	Maximum Operating Pressure	Maximum Kinematic Viscosity	Maximum Inlet Pressure Rating	Minimum Operating Temperature	Installation Torque	Weight	Maximum Flow Rate	Function	Actuation Type	Maximum Pressure Setting	Operation Type	Adjustment Mechanism	Port Thread Size	Cavity Size	Flow Rate	Maximum Operating Temperature	For Fluid Type	Valve Material	Operating Temperature	Filter Efficiency Rating	Mounting Type	Maximum Tank Pressure	Pressure Control Range	Standard Setting Pressure	Cracking Pressure	Reseat Pressure	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
RD163S30	Quote Required	Quote Required	$214.50/each	EA	Nitrile	n/a	Hydraulic Systems Division	3500 psi	45-2000 SSU (6 to 420 cSt)	240 bar	-30 °F	54 Nm	0.5 lb	40 Gal/min	Direct Acting	Pressure Sensing	3000 psi	Automatic	Screw	n/a	C16-2	40 Gal/min	+250 °F	Mineral-based or synthetic hydraulic fluids	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	600-3000 psi	103.5 bar	N/A psi	80% of pressure setting	.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
RD163T30	Quote Required	Quote Required	$240.25/each	EA	Nitrile	n/a	Hydraulic Systems Division	3500 psi	45-2000 SSU (6 to 420 cSt)	3500 psi	-34 °C	54 Nm	0.23 kg	151 L/min	Direct Acting	Pressure Sensing	210 bar	Automatic	Tamper Resistant	n/a	C16-2	151 L/min	+250 °F	Mineral-based or synthetic hydraulic fluids	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	41.4-210 bar	103.5 bar	N/A psi	80% of pressure setting	.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
RDCH103K30-8T	Quote Required	Quote Required	TBD	EA	D-Ring (Standard)	Steel	Hydraulic Systems Division	5500	45-2000 SSU (6 to 420 cSt)	5500	-35	N/A	2.7	16	Direct Acting	Pressure Sensing	3000	Automatic	Knob	SAE-8	n/a	16	+200	Mineral-based or synthetic hydraulic fluids	All parts steel. All operating parts hardened steel	-35 to +200	ISO 4406 18/16/13, SAE Class 4	Line Mounted	5000	500-3000	1500	5	85% of pressure setting	5 @ 75% Crack Pressure	Differential Area Relief, Differential Relief w/Reverse Flow Check	375 per turn	380	D-Ring (Standard)	Knob	Line Mounted	5 PSI, 0.3 BAR	500-3000 PSI, 34.5-210 BAR	16 GAL/MIN, 60 L/MIN	5500 PSI, 380 BAR	1500 PSI, 103.5 BAR
RDH083S15	Quote Required	Quote Required	$68.25/each	EA	Nitrile	n/a	Hydraulic Systems Division	5500 psi	45-2000 SSU (6 to 420 cSt)	380 bar	-34 °C	31 Nm	0.19 kg	12 Gal/min	Direct Acting	Pressure Sensing	1500 psi	Automatic	Screw	n/a	C08-2	45 L/min	+250 °F	Mineral-based or synthetic hydraulic fluids	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	100-1500 psi	51.7 bar	N/A psi	75% of pressure setting	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
RDH083S30	Quote Required	30 In Stock	$68.25/each	EA	Nitrile	n/a	Hydraulic Systems Division	5500 psi	45-2000 SSU (6 to 420 cSt)	380 bar	-30 °F	23 lb-ft	0.19 kg	12 Gal/min	Direct Acting	Pressure Sensing	210 bar	Automatic	Screw	n/a	C08-2	45 L/min	+250 °F	Mineral-based or synthetic hydraulic fluids	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	69-210 bar	103.5 bar	N/A psi	75% of pressure setting	.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	Quote Required	Quote Required	$76.50/each	EA	Fluorocarbon	n/a	Hydraulic Systems Division	5500 psi	45-2000 SSU (6 to 420 cSt)	380 bar	-15 °F	23 lb-ft	0.19 kg	12 Gal/min	Direct Acting	Pressure Sensing	3000 psi	Automatic	Screw	n/a	C08-2	45 L/min	+400 °F	Mineral-based or synthetic hydraulic fluids	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	69-210 bar	103.5 bar	N/A psi	75% of pressure setting	.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
RDH103K20	Quote Required	Quote Required	TBD	EA	D-Ring (Standard)	n/a	Hydraulic Systems Division	5500 psi	45-2000 SSU (6 to 420 cSt)	380 bar	-35 °F	51-55 lb-ft	0.5 lb	75 L/min	Direct Acting	Pressure Sensing	138 bar	Automatic	Knob	n/a	C10-2	75 L/min	+200 °F	Mineral-based or synthetic hydraulic fluids	All parts steel. All operating parts hardened steel	-35 to +200 °F	ISO 4406 18/16/13, SAE Class 4	Screw in cartridge valve	350 bar	500-2000 psi	1000 psi	N/A psi	85% of pressure setting	.33 @ 75% Crack Pressure cm3/min	Differential Area Relief, Differential Relief w/Reverse Flow Check	17 per turn bar	380 bar	D-Ring (Standard)	Knob	Screw in cartridge valve	N/A	500-2000 PSI, 34.5-138 BAR	20 GAL/MIN, 75 L/MIN	5500 PSI, 380 BAR	1000 PSI, 69 BAR
RDH103K50	Quote Required	1 Limited Stock	$69.75/each	EA	D-Ring (Standard)	n/a	Hydraulic Systems Division	5500 psi	45-2000 SSU (6 to 420 cSt)	380 bar	-35 °F	51-55 lb-ft	0.5 lb	20 Gal/min	Direct Acting	Pressure Sensing	5000 psi	Automatic	Knob	n/a	C10-2	20 Gal/min	+93 °C	Mineral-based or synthetic hydraulic fluids	All parts steel. All operating parts hardened steel	-37 to +93 °C	ISO 4406 18/16/13, SAE Class 4	Screw in cartridge valve	5000 psi	2000-5000 psi	172 bar	N/A psi	85% of pressure setting	.33 @ 75% Crack Pressure cm3/min	Differential Area Relief, Differential Relief w/Reverse Flow Check	589 per turn psi	380 bar	D-Ring (Standard)	Knob	Screw in cartridge valve	N/A	500-5000 PSI, 34.5-350 BAR	20 GAL/MIN, 75 L/MIN	5500 PSI, 380 BAR	2500 PSI, 172 BAR
RDH103S10	Quote Required	Quote Required	$53.75/each	EA	D-Ring (Standard)	n/a	Hydraulic Systems Division	5500 psi	45-2000 SSU (6 to 420 cSt)	5500 psi	-35 °F	69-75 Nm	0.5 lb	75 L/min	Direct Acting	Pressure Sensing	1000 psi	Automatic	Screw	n/a	C10-2	75 L/min	+93 °C	Mineral-based or synthetic hydraulic fluids	All parts steel. All operating parts hardened steel	-35 to +200 °F	ISO 4406 18/16/13, SAE Class 4	Screw in cartridge valve	350 bar	100-1000 psi	34.5 bar	N/A psi	85% of pressure setting	5 @ 75% Crack Pressure drops/min	Differential Area Relief, Differential Relief w/Reverse Flow Check	143 per turn psi	380 bar	D-Ring (Standard)	Screw	Screw in cartridge valve	N/A	100-1000 PSI, 6.9-69 BAR	20 GAL/MIN, 75 L/MIN	5500 PSI, 380 BAR	500 PSI, 34.5 BAR
RDH103S10V	Quote Required	Quote Required	$61.75/each	EA	Fluorocarbon	n/a	Hydraulic Systems Division	5500 psi	45-2000 SSU (6 to 420 cSt)	380 bar	-26 °C	51-55 lb-ft	0.5 lb	20 Gal/min	Direct Acting	Pressure Sensing	1000 psi	Automatic	Screw	n/a	C10-2	20 Gal/min	+204 °C	Mineral-based or synthetic hydraulic fluids	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	100-1000 psi	34.5 bar	N/A psi	85% of pressure setting	5 @ 75% Crack Pressure drops/min	Differential Area Relief, Differential Relief w/Reverse Flow Check	143 per turn psi	380 bar	Fluorocarbon	Screw	Screw in cartridge valve	N/A	100-1000 PSI, 6.9-69 BAR	20 GAL/MIN, 75 L/MIN	5500 PSI, 380 BAR	500 PSI, 34.5 BAR
RDH103S20	Quote Required	Quote Required	TBD	EA	D-Ring (Standard)	n/a	Hydraulic Systems Division	5500 psi	45-2000 SSU (6 to 420 cSt)	380 bar	-35 °F	69-75 Nm	0.23 kg	20 Gal/min	Direct Acting	Pressure Sensing	138 bar	Automatic	Screw	n/a	C10-2	20 Gal/min	+200 °F	Mineral-based or synthetic hydraulic fluids	All parts steel. All operating parts hardened steel	-37 to +93 °C	ISO 4406 18/16/13, SAE Class 4	Screw in cartridge valve	350 bar	34.5-138 bar	69 bar	N/A psi	85% of pressure setting	5 @ 75% Crack Pressure drops/min	Differential Area Relief, Differential Relief w/Reverse Flow Check	246 per turn psi	380 bar	D-Ring (Standard)	Screw	Screw in cartridge valve	N/A	500-2000 PSI, 34.5-138 BAR	20 GAL/MIN, 75 L/MIN	5500 PSI, 380 BAR	1000 PSI, 69 BAR
RDH103S30	Quote Required	34 In Stock	$53.75/each	EA	D-Ring (Standard)	n/a	Hydraulic Systems Division	5500 psi	45-2000 SSU (6 to 420 cSt)	380 bar	-37 °C	51-55 lb-ft	0.23 kg	20 Gal/min	Direct Acting	Pressure Sensing	210 bar	Automatic	Screw	n/a	C10-2	20 Gal/min	+93 °C	Mineral-based or synthetic hydraulic fluids	All parts steel. All operating parts hardened steel	-35 to +200 °F	ISO 4406 18/16/13, SAE Class 4	Screw in cartridge valve	350 bar	1000-3000 psi	1500 psi	N/A psi	85% of pressure setting	5 @ 75% Crack Pressure drops/min	Differential Area Relief, Differential Relief w/Reverse Flow Check	375 per turn psi	380 bar	D-Ring (Standard)	Screw	Screw in cartridge valve	N/A	500-3000 PSI, 34.5-210 BAR	20 GAL/MIN, 75 L/MIN	5500 PSI, 380 BAR	1500 PSI, 103.5 BAR
RDH103S50	13 In Stock	168 In Stock	$53.75/each	EA	D-Ring (Standard)	n/a	Hydraulic Systems Division	5500 psi	45-2000 SSU (6 to 420 cSt)	5500 psi	-37 °C	51-55 lb-ft	0.5 lb	75 L/min	Direct Acting	Pressure Sensing	5000 psi	Automatic	Screw	n/a	C10-2	75 L/min	+93 °C	Mineral-based or synthetic hydraulic fluids	All parts steel. All operating parts hardened steel	-35 to +200 °F	ISO 4406 18/16/13, SAE Class 4	Screw in cartridge valve	5000 psi	138-350 bar	2500 psi	N/A psi	85% of pressure setting	5 @ 75% Crack Pressure drops/min	Differential Area Relief, Differential Relief w/Reverse Flow Check	40.6 per turn bar	380 bar	D-Ring (Standard)	Screw	Screw in cartridge valve	N/A	500-5000 PSI, 34.5-350 BAR	20 GAL/MIN, 75 L/MIN	5500 PSI, 380 BAR	2500 PSI, 172 BAR
RDH103S50N	Quote Required	Quote Required	$61.75/each	EA	Nitrile	n/a	Hydraulic Systems Division	5500 psi	45-2000 SSU (6 to 420 cSt)	380 bar	-34 °C	51-55 lb-ft	0.5 lb	20 Gal/min	Direct Acting	Pressure Sensing	5000 psi	Automatic	Screw	n/a	C10-2	20 Gal/min	+121 °C	Mineral-based or synthetic hydraulic fluids	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	2000-5000 psi	172 bar	N/A psi	85% of pressure setting	.33 @ 75% Crack Pressure cm3/min	Differential Area Relief, Differential Relief w/Reverse Flow Check	40.6 per turn bar	380 bar	Nitrile	Screw	Screw in cartridge valve	N/A	500-5000 PSI, 34.5-350 BAR	20 GAL/MIN, 75 L/MIN	5500 PSI, 380 BAR	2500 PSI, 172 BAR
RDH103T10	Quote Required	Quote Required	$68.50/each	EA	D-Ring (Standard)	n/a	Hydraulic Systems Division	5500 psi	45-2000 SSU (6 to 420 cSt)	380 bar	-37 °C	69-75 Nm	0.23 kg	20 Gal/min	Direct Acting	Pressure Sensing	69 bar	Automatic	Tamper Resistant	n/a	C10-2	75 L/min	+200 °F	Mineral-based or synthetic hydraulic fluids	All parts steel. All operating parts hardened steel	-37 to +93 °C	ISO 4406 18/16/13, SAE Class 4	Screw in cartridge valve	350 bar	100-1000 psi	500 psi	N/A psi	85% of pressure setting	.33 @ 75% Crack Pressure cm3/min	Differential Area Relief, Differential Relief w/Reverse Flow Check	9.8 per turn bar	380 bar	D-Ring (Standard)	Tamper Resistant	Screw in cartridge valve	N/A	100-1000 PSI, 6.9-69 BAR	20 GAL/MIN, 75 L/MIN	5500 PSI, 380 BAR	500 PSI, 34.5 BAR
RDH103T10V	Quote Required	Quote Required	$74.25/each	EA	Fluorocarbon	n/a	Hydraulic Systems Division	5500 psi	45-2000 SSU (6 to 420 cSt)	5500 psi	-26 °C	51-55 lb-ft	0.23 kg	20 Gal/min	Direct Acting	Pressure Sensing	69 bar	Automatic	Tamper Resistant	n/a	C10-2	20 Gal/min	+204 °C	Mineral-based or synthetic hydraulic fluids	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	6.9-69 bar	500 psi	N/A psi	85% of pressure setting	.33 @ 75% Crack Pressure cm3/min	Differential Area Relief, Differential Relief w/Reverse Flow Check	143 per turn psi	380 bar	Fluorocarbon	Tamper Resistant	Screw in cartridge valve	N/A	100-1000 PSI, 6.9-69 BAR	20 GAL/MIN, 75 L/MIN	5500 PSI, 380 BAR	500 PSI, 34.5 BAR
RDH103T30V	Quote Required	Quote Required	$74.25/each	EA	Fluorocarbon	n/a	Hydraulic Systems Division	5500 psi	45-2000 SSU (6 to 420 cSt)	380 bar	-15 °F	51-55 lb-ft	0.5 lb	75 L/min	Direct Acting	Pressure Sensing	210 bar	Automatic	Tamper Resistant	n/a	C10-2	20 Gal/min	+400 °F	Mineral-based or synthetic hydraulic fluids	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	1000-3000 psi	103.5 bar	N/A psi	85% of pressure setting	.33 @ 75% Crack Pressure cm3/min	Differential Area Relief, Differential Relief w/Reverse Flow Check	375 per turn psi	380 bar	Fluorocarbon	Tamper Resistant	Screw in cartridge valve	N/A	500-3000 PSI, 34.5-210 BAR	20 GAL/MIN, 75 L/MIN	5500 PSI, 380 BAR	1500 PSI, 103.5 BAR
RDH103T50	Quote Required	Quote Required	$68.50/each	EA	D-Ring (Standard)	n/a	Hydraulic Systems Division	5500 psi	45-2000 SSU (6 to 420 cSt)	5500 psi	-35 °F	51-55 lb-ft	0.23 kg	75 L/min	Direct Acting	Pressure Sensing	350 bar	Automatic	Tamper Resistant	n/a	C10-2	20 Gal/min	+93 °C	Mineral-based or synthetic hydraulic fluids	All parts steel. All operating parts hardened steel	-35 to +200 °F	ISO 4406 18/16/13, SAE Class 4	Screw in cartridge valve	5000 psi	138-350 bar	172 bar	N/A psi	85% of pressure setting	.33 @ 75% Crack Pressure cm3/min	Differential Area Relief, Differential Relief w/Reverse Flow Check	589 per turn psi	380 bar	D-Ring (Standard)	Tamper Resistant	Screw in cartridge valve	N/A	500-5000 PSI, 34.5-350 BAR	20 GAL/MIN, 75 L/MIN	5500 PSI, 380 BAR	2500 PSI, 172 BAR