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	Mounting Type	Standard Setting Pressure	Maximum Flow Rate	Leak Rate	Operation Type	Body Material	Minimum Operating Temperature	Installation Torque	Operating Temperature	Division	Minimum Operating Pressure	Reseat Pressure	Flow Rate	Maximum Operating Pressure	Actuation Type	Seal Material	Weight	Port Thread Size	Maximum Inlet Pressure Rating	Filter Efficiency Rating	Cracking Pressure	Maximum Kinematic Viscosity	Adjustment Mechanism	Valve Material	Maximum Pressure Setting	Pressure Control Sensitivity	Function	Configuration	Maximum Tank Pressure	For Fluid Type	Pressure Control Range	Cavity Size	Maximum Operating Temperature	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	Screw in cartridge valve	103.5 bar	40 Gal/min	.66 @ 75% Crack Pressure cm3/min	Automatic	N/A	-30 °F	54 Nm	-34 to +121 °C	Hydraulic Systems Division	240 bar	80% of pressure setting	40 Gal/min	3500 psi	Pressure Sensing	Nitrile	0.5 lb	N/A	240 bar	ISO 4406 18/16/13, SAE Class 4	N/A psi	45-2000 SSU (6 to 420 cSt)	Screw	All parts steel. All operating parts hardened steel	3000 psi	14 per turn bar	Direct Acting	Differential Area Relief, Differential Relief w/Reverse Flow Check	3000 psi	Mineral-based or synthetic hydraulic fluids	600-3000 psi	C16-2	+250 °F	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	Screw in cartridge valve	103.5 bar	151 L/min	.66 @ 75% Crack Pressure cm3/min	Automatic	N/A	-34 °C	54 Nm	-30 to +250 °F	Hydraulic Systems Division	240 bar	80% of pressure setting	151 L/min	3500 psi	Pressure Sensing	Nitrile	0.23 kg	N/A	3500 psi	ISO 4406 18/16/13, SAE Class 4	N/A psi	45-2000 SSU (6 to 420 cSt)	Tamper Resistant	All parts steel. All operating parts hardened steel	210 bar	14 per turn bar	Direct Acting	Differential Area Relief, Differential Relief w/Reverse Flow Check	3000 psi	Mineral-based or synthetic hydraulic fluids	41.4-210 bar	C16-2	+250 °F	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	Line Mounted	1500	16	5 @ 75% Crack Pressure	Automatic	Steel	-35	N/A	-35 to +200	Hydraulic Systems Division	380	85% of pressure setting	16	5500	Pressure Sensing	D-Ring (Standard)	2.7	SAE-8	5500	ISO 4406 18/16/13, SAE Class 4	5	45-2000 SSU (6 to 420 cSt)	Knob	All parts steel. All operating parts hardened steel	3000	375 per turn	Direct Acting	Differential Area Relief, Differential Relief w/Reverse Flow Check	5000	Mineral-based or synthetic hydraulic fluids	500-3000	N/A	+200	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	Screw in cartridge valve	51.7 bar	12 Gal/min	10 @ 75% Crack Pressure drops/min	Automatic	N/A	-34 °C	31 Nm	-30 to +250 °F	Hydraulic Systems Division	380 bar	75% of pressure setting	45 L/min	5500 psi	Pressure Sensing	Nitrile	0.19 kg	N/A	380 bar	ISO 4406 18/16/13, SAE Class 4	N/A psi	45-2000 SSU (6 to 420 cSt)	Screw	All parts steel. All operating parts hardened steel	1500 psi	218 per turn psi	Direct Acting	Differential Area Relief, Differential Relief w/Reverse Flow Check	5000 psi	Mineral-based or synthetic hydraulic fluids	100-1500 psi	C08-2	+250 °F	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	13 In Stock	$83.30/each	Screw in cartridge valve	103.5 bar	12 Gal/min	.66 @ 75% Crack Pressure cm3/min	Automatic	N/A	-30 °F	23 lb-ft	-34 to +121 °C	Hydraulic Systems Division	380 bar	75% of pressure setting	45 L/min	5500 psi	Pressure Sensing	Nitrile	0.19 kg	N/A	380 bar	ISO 4406 18/16/13, SAE Class 4	N/A psi	45-2000 SSU (6 to 420 cSt)	Screw	All parts steel. All operating parts hardened steel	210 bar	27 per turn bar	Direct Acting	Differential Area Relief, Differential Relief w/Reverse Flow Check	5000 psi	Mineral-based or synthetic hydraulic fluids	69-210 bar	C08-2	+250 °F	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	Screw in cartridge valve	103.5 bar	12 Gal/min	.66 @ 75% Crack Pressure cm3/min	Automatic	N/A	-15 °F	23 lb-ft	-26 to +204 °C	Hydraulic Systems Division	380 bar	75% of pressure setting	45 L/min	5500 psi	Pressure Sensing	Fluorocarbon	0.19 kg	N/A	380 bar	ISO 4406 18/16/13, SAE Class 4	N/A psi	45-2000 SSU (6 to 420 cSt)	Screw	All parts steel. All operating parts hardened steel	3000 psi	396 per turn psi	Direct Acting	Differential Area Relief, Differential Relief w/Reverse Flow Check	5000 psi	Mineral-based or synthetic hydraulic fluids	69-210 bar	C08-2	+400 °F	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	Screw in cartridge valve	1000 psi	75 L/min	.33 @ 75% Crack Pressure cm3/min	Automatic	N/A	-35 °F	51-55 lb-ft	-35 to +200 °F	Hydraulic Systems Division	380 bar	85% of pressure setting	75 L/min	5500 psi	Pressure Sensing	D-Ring (Standard)	0.5 lb	N/A	380 bar	ISO 4406 18/16/13, SAE Class 4	N/A psi	45-2000 SSU (6 to 420 cSt)	Knob	All parts steel. All operating parts hardened steel	138 bar	17 per turn bar	Direct Acting	Differential Area Relief, Differential Relief w/Reverse Flow Check	350 bar	Mineral-based or synthetic hydraulic fluids	500-2000 psi	C10-2	+200 °F	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	$85.14/each	Screw in cartridge valve	172 bar	20 Gal/min	.33 @ 75% Crack Pressure cm3/min	Automatic	N/A	-35 °F	51-55 lb-ft	-37 to +93 °C	Hydraulic Systems Division	380 bar	85% of pressure setting	20 Gal/min	5500 psi	Pressure Sensing	D-Ring (Standard)	0.5 lb	N/A	380 bar	ISO 4406 18/16/13, SAE Class 4	N/A psi	45-2000 SSU (6 to 420 cSt)	Knob	All parts steel. All operating parts hardened steel	5000 psi	589 per turn psi	Direct Acting	Differential Area Relief, Differential Relief w/Reverse Flow Check	5000 psi	Mineral-based or synthetic hydraulic fluids	2000-5000 psi	C10-2	+93 °C	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	Screw in cartridge valve	34.5 bar	75 L/min	5 @ 75% Crack Pressure drops/min	Automatic	N/A	-35 °F	69-75 Nm	-35 to +200 °F	Hydraulic Systems Division	380 bar	85% of pressure setting	75 L/min	5500 psi	Pressure Sensing	D-Ring (Standard)	0.5 lb	N/A	5500 psi	ISO 4406 18/16/13, SAE Class 4	N/A psi	45-2000 SSU (6 to 420 cSt)	Screw	All parts steel. All operating parts hardened steel	1000 psi	143 per turn psi	Direct Acting	Differential Area Relief, Differential Relief w/Reverse Flow Check	350 bar	Mineral-based or synthetic hydraulic fluids	100-1000 psi	C10-2	+93 °C	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	Screw in cartridge valve	34.5 bar	20 Gal/min	5 @ 75% Crack Pressure drops/min	Automatic	N/A	-26 °C	51-55 lb-ft	-26 to +204 °C	Hydraulic Systems Division	380 bar	85% of pressure setting	20 Gal/min	5500 psi	Pressure Sensing	Fluorocarbon	0.5 lb	N/A	380 bar	ISO 4406 18/16/13, SAE Class 4	N/A psi	45-2000 SSU (6 to 420 cSt)	Screw	All parts steel. All operating parts hardened steel	1000 psi	143 per turn psi	Direct Acting	Differential Area Relief, Differential Relief w/Reverse Flow Check	5000 psi	Mineral-based or synthetic hydraulic fluids	100-1000 psi	C10-2	+204 °C	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	$58.00/each	Screw in cartridge valve	69 bar	20 Gal/min	5 @ 75% Crack Pressure drops/min	Automatic	N/A	-35 °F	69-75 Nm	-37 to +93 °C	Hydraulic Systems Division	380 bar	85% of pressure setting	20 Gal/min	5500 psi	Pressure Sensing	D-Ring (Standard)	0.23 kg	N/A	380 bar	ISO 4406 18/16/13, SAE Class 4	N/A psi	45-2000 SSU (6 to 420 cSt)	Screw	All parts steel. All operating parts hardened steel	138 bar	246 per turn psi	Direct Acting	Differential Area Relief, Differential Relief w/Reverse Flow Check	350 bar	Mineral-based or synthetic hydraulic fluids	34.5-138 bar	C10-2	+200 °F	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	29 In Stock	$65.60/each	Screw in cartridge valve	1500 psi	20 Gal/min	5 @ 75% Crack Pressure drops/min	Automatic	N/A	-37 °C	51-55 lb-ft	-35 to +200 °F	Hydraulic Systems Division	380 bar	85% of pressure setting	20 Gal/min	5500 psi	Pressure Sensing	D-Ring (Standard)	0.23 kg	N/A	380 bar	ISO 4406 18/16/13, SAE Class 4	N/A psi	45-2000 SSU (6 to 420 cSt)	Screw	All parts steel. All operating parts hardened steel	210 bar	375 per turn psi	Direct Acting	Differential Area Relief, Differential Relief w/Reverse Flow Check	350 bar	Mineral-based or synthetic hydraulic fluids	1000-3000 psi	C10-2	+93 °C	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	104 In Stock	$53.75/each	Screw in cartridge valve	2500 psi	75 L/min	5 @ 75% Crack Pressure drops/min	Automatic	N/A	-37 °C	51-55 lb-ft	-35 to +200 °F	Hydraulic Systems Division	380 bar	85% of pressure setting	75 L/min	5500 psi	Pressure Sensing	D-Ring (Standard)	0.5 lb	N/A	5500 psi	ISO 4406 18/16/13, SAE Class 4	N/A psi	45-2000 SSU (6 to 420 cSt)	Screw	All parts steel. All operating parts hardened steel	5000 psi	40.6 per turn bar	Direct Acting	Differential Area Relief, Differential Relief w/Reverse Flow Check	5000 psi	Mineral-based or synthetic hydraulic fluids	138-350 bar	C10-2	+93 °C	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	Screw in cartridge valve	172 bar	20 Gal/min	.33 @ 75% Crack Pressure cm3/min	Automatic	N/A	-34 °C	51-55 lb-ft	-34 to +121 °C	Hydraulic Systems Division	380 bar	85% of pressure setting	20 Gal/min	5500 psi	Pressure Sensing	Nitrile	0.5 lb	N/A	380 bar	ISO 4406 18/16/13, SAE Class 4	N/A psi	45-2000 SSU (6 to 420 cSt)	Screw	All parts steel. All operating parts hardened steel	5000 psi	40.6 per turn bar	Direct Acting	Differential Area Relief, Differential Relief w/Reverse Flow Check	5000 psi	Mineral-based or synthetic hydraulic fluids	2000-5000 psi	C10-2	+121 °C	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	Screw in cartridge valve	500 psi	20 Gal/min	.33 @ 75% Crack Pressure cm3/min	Automatic	N/A	-37 °C	69-75 Nm	-37 to +93 °C	Hydraulic Systems Division	380 bar	85% of pressure setting	75 L/min	5500 psi	Pressure Sensing	D-Ring (Standard)	0.23 kg	N/A	380 bar	ISO 4406 18/16/13, SAE Class 4	N/A psi	45-2000 SSU (6 to 420 cSt)	Tamper Resistant	All parts steel. All operating parts hardened steel	69 bar	9.8 per turn bar	Direct Acting	Differential Area Relief, Differential Relief w/Reverse Flow Check	350 bar	Mineral-based or synthetic hydraulic fluids	100-1000 psi	C10-2	+200 °F	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	Screw in cartridge valve	500 psi	20 gal/min	.33 @ 75% Crack Pressure cm3/min	Automatic	N/A	-26 °C	51-55 lb-ft	-26 to +204 °C	Hydraulic Systems Division	380 bar	85% of pressure setting	20 gal/min	5500 psi	Pressure Sensing	Fluorocarbon	0.23 kg	N/A	5500 psi	ISO 4406 18/16/13, SAE Class 4	N/A psi	45-2000 SSU (6 to 420 cSt)	Tamper Resistant	All parts steel. All operating parts hardened steel	69 bar	143 per turn psi	Direct Acting	Differential Area Relief, Differential Relief w/Reverse Flow Check	5000 psi	Mineral-based or synthetic hydraulic fluids	6.9-69 bar	C10-2	+204 °C	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	Screw in cartridge valve	103.5 bar	75 L/min	.33 @ 75% Crack Pressure cm3/min	Automatic	N/A	-15 °F	51-55 lb-ft	-26 to +204 °C	Hydraulic Systems Division	380 bar	85% of pressure setting	20 Gal/min	5500 psi	Pressure Sensing	Fluorocarbon	0.5 lb	N/A	380 bar	ISO 4406 18/16/13, SAE Class 4	N/A psi	45-2000 SSU (6 to 420 cSt)	Tamper Resistant	All parts steel. All operating parts hardened steel	210 bar	375 per turn psi	Direct Acting	Differential Area Relief, Differential Relief w/Reverse Flow Check	350 bar	Mineral-based or synthetic hydraulic fluids	1000-3000 psi	C10-2	+400 °F	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	Screw in cartridge valve	172 bar	75 L/min	.33 @ 75% Crack Pressure cm3/min	Automatic	N/A	-35 °F	51-55 lb-ft	-35 to +200 °F	Hydraulic Systems Division	380 bar	85% of pressure setting	20 Gal/min	5500 psi	Pressure Sensing	D-Ring (Standard)	0.23 kg	N/A	5500 psi	ISO 4406 18/16/13, SAE Class 4	N/A psi	45-2000 SSU (6 to 420 cSt)	Tamper Resistant	All parts steel. All operating parts hardened steel	350 bar	589 per turn psi	Direct Acting	Differential Area Relief, Differential Relief w/Reverse Flow Check	5000 psi	Mineral-based or synthetic hydraulic fluids	138-350 bar	C10-2	+93 °C	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