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Parker RDH042T50 - Direct Acting Relief Valves

Parker’s direct acting relief valves are available in several cavity sizes and are designed for continuous duty applications with pressures up to 420 bar (6000 psi) and flows up to 200 lpm (53 gpm).

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Brand Parker

Part No. RDH042T50

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Products specifications

Attribute name	Attribute value
Seal Material	Nitrile	Weight	0.07 lb
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	-30 °F	Function	Direct Acting
Configuration	Pressure Relief	Actuation Type	Pressure Sensing
Operation Type	Automatic	Adjustment Mechanism	Tamper Resistant
Wire Mesh Screen Included	n/a	Maximum Tank Pressure	5000 psi
Cavity Size	C04-2	Maximum Inlet Pressure Rating	380 bar
Flow Rate	3.8 L/min	Maximum Flow Rate	3.8 L/min
Maximum Operating Temperature	+121 °C	For Fluid Type	Mineral-based or synthetic hydraulic fluids
Valve Material	All parts steel. All operating parts hardened steel	Operating Temperature	-34 to +121 °C
Filter Efficiency Rating	ISO 4406 18/16/13, SAE Class 4	Mounting Type	Screw in cartridge valve
Installation Torque	10 Nm	Maximum Pressure Setting	350 bar
Standard Setting Pressure	2500 psi	Reseat Pressure	80% of pressure setting
Leak Rate	10 @ 75% Crack Pressure drops/min	Pressure Control Range	103.4-350 bar
Pressure Control Sensitivity	1710 per turn psi	Seal Material	Nitrile
Adjustment Mechanism	Tamper Resistant	Flow Rate	1 GAL/MIN, 3.8 L/MIN
Maximum Inlet Pressure Rating	5500 PSI, 380 BAR	Pressure Control Range	1500-5000 PSI, 103-350 BAR

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