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Parker RDH042K50 - 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. RDH042K50

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Products specifications

Attribute name	Attribute value
Seal Material	Nitrile	Weight	0.03 kg
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	-34 °C	Function	Direct Acting
Configuration	Pressure Relief	Actuation Type	Pressure Sensing
Operation Type	Automatic	Adjustment Mechanism	Knob
Wire Mesh Screen Included	n/a	Maximum Tank Pressure	350 bar
Maximum Pressure Setting	5000 psi	Cavity Size	C04-2
Maximum Flow Rate	1 Gal/min	Maximum Inlet Pressure Rating	380 bar
Flow Rate	3.8 L/min	Maximum Operating Temperature	+250 °F
For Fluid Type	Mineral-based or synthetic hydraulic fluids	Valve Material	All parts steel. All operating parts hardened steel
Operating Temperature	-30 to +250 °F	Filter Efficiency Rating	ISO 4406 18/16/13, SAE Class 4
Mounting Type	Screw in cartridge valve	Installation Torque	10 Nm
Standard Setting Pressure	172.4 bar	Pressure Control Sensitivity	118 per turn bar
Reseat Pressure	80% of pressure setting	Leak Rate	0.66 @ 75% Crack Pressure cm3/min
Pressure Control Range	1500-5000 psi	Seal Material	Nitrile
Adjustment Mechanism	Knob	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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