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Parker RDH103K20 - Direct Acting Differential Area Relief Valves

Parker’s direct acting differential area relief valves are for fast response intermittent applications and work up to 380 bar (5500 psi) and 151 lpm (40 gpm). These valves have lower leakage rates and pressure rise than standard direct acting reliefs.

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Partner Available:	Quote Required

Brand Parker

Part No. RDH103K20

Products specifications

Attribute name	Attribute value
Leak Rate	.33 @ 75% Crack Pressure cm3/min	Operation Type	Automatic
Maximum Flow Rate	75 L/min	Body Material	N/A
Standard Setting Pressure	1000 psi	Mounting Type	Screw in cartridge valve
Installation Torque	51-55 lb-ft	Division	Hydraulic Systems Division
Minimum Operating Pressure	380 bar	Minimum Operating Temperature	-35 °F
Operating Temperature	-35 to +200 °F	Flow Rate	75 L/min
Port Thread Size	N/A	Reseat Pressure	85% of pressure setting
Weight	0.5 lb	Actuation Type	Pressure Sensing
Maximum Operating Pressure	5500 psi	Seal Material	D-Ring (Standard)
Valve Material	All parts steel. All operating parts hardened steel	Maximum Pressure Setting	138 bar
Cracking Pressure	N/A psi	Filter Efficiency Rating	ISO 4406 18/16/13, SAE Class 4
Maximum Kinematic Viscosity	45-2000 SSU (6 to 420 cSt)	Maximum Inlet Pressure Rating	380 bar
Adjustment Mechanism	Knob	Configuration	Differential Area Relief, Differential Relief w/Reverse Flow Check
Maximum Tank Pressure	350 bar	Pressure Control Sensitivity	17 per turn bar
Function	Direct Acting	Cavity Size	C10-2
For Fluid Type	Mineral-based or synthetic hydraulic fluids	Pressure Control Range	500-2000 psi
Maximum Operating Temperature	+200 °F	Adjustment Mechanism	Knob
Mounting Type	Screw in cartridge valve	Cracking Pressure	N/A
Seal Material	D-Ring (Standard)	Flow Rate	20 GAL/MIN, 75 L/MIN
Maximum Inlet Pressure Rating	5500 PSI, 380 BAR	Pressure Control Range	500-2000 PSI, 34.5-138 BAR
Standard Setting Pressure	1000 PSI, 69 BAR

Product resources

Literature and Reference Materials