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Parker RDH083S50V - 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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Brand Parker

Part No. RDH083S50V

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Products specifications

Attribute name	Attribute value
Seal Material	Fluorocarbon	Body Material	n/a
Maximum Operating Pressure	5500 psi	Division	Hydraulic Systems Division
Maximum Kinematic Viscosity	45-2000 SSU (6 to 420 cSt)	Minimum Operating Temperature	-26 °C
Function	Direct Acting	Actuation Type	Pressure Sensing
Cavity Size	C08-2	Operation Type	Automatic
Adjustment Mechanism	Screw	Maximum Tank Pressure	350 bar
Maximum Pressure Setting	5000 psi	Port Thread Size	n/a
Maximum Flow Rate	12 Gal/min	Flow Rate	45 L/min
Maximum Inlet Pressure Rating	5500 psi	Maximum Operating Temperature	+400 °F
For Fluid Type	Mineral-based or synthetic hydraulic fluids	Valve Material	All parts steel. All operating parts hardened steel
Operating Temperature	-26 to +204 °C	Filter Efficiency Rating	ISO 4406 18/16/13, SAE Class 4
Mounting Type	Screw in cartridge valve	Standard Setting Pressure	2500 psi
Cracking Pressure	N/A psi	Leak Rate	.66 @ 75% Crack Pressure cm3/min
Configuration	Differential Area Relief, Differential Relief w/Reverse Flow Check	Reseat Pressure	75% of pressure setting
Weight	0.43 lb	Installation Torque	31 Nm
Pressure Control Range	138-350 bar	Minimum Operating Pressure	380 bar
Pressure Control Sensitivity	614 per turn psi	Seal Material	Fluorocarbon
Adjustment Mechanism	Screw	Mounting Type	Screw in cartridge valve
Cracking Pressure	N/A	Flow Rate	12 GAL/MIN, 45 L/MIN
Maximum Inlet Pressure Rating	5500 PSI, 380 BAR	Standard Setting Pressure	2500 PSI, 172 BAR
Pressure Control Range	2000-5000 PSI, 138-350 BAR

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