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Parker RU101K30C - Unloading Relief Valves

Parker’s unloading pressure control valves automatically charge and maintain a specific pressure range within accumulators by loading and unloading pump flow. Usable with fixed or variable pumps and pressure of 420 bar (6000 psi) and flow up to 1 gpm.

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Brand Parker

Part No. RU101K30C

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Products specifications

Attribute name	Attribute value
Maximum Kinematic Viscosity	45-2000 SSU (6 to 420 cSt)	Leak Rate	10 (port 2 to 3), 60 (port 1 to 2) drops/min
For Fluid Type	Mineral-based or synthetic hydraulic fluids	Minimum Operating Temperature	-34 °C
Maximum Pressure Setting	3000 psi	Maximum Flow Rate	1 Gal/min
Pressure Control Range	100-1000 psi	Operating Temperature	-34 to +121 °C
Standard Setting Pressure	103.5 bar	Weight	0.5 lb
Cavity Size	C10-3	Adjustment Mechanism	Knob
Flow Rate	3.75 L/min	Maximum Operating Pressure	3500 psi
Installation Torque	16 lb-ft	Maximum Inlet Pressure Rating	3500 psi
Filter Efficiency Rating	ISO 4406 18/16/13, SAE Class 4	Maximum Tank Pressure	3000 psi
Valve Material	All parts steel. All operating parts hardened steel	Function	Unloading Relief Valve
Body Material	n/a	Division	Hydraulic Cartridge Systems Division
Seal Material	Nitrile	Actuation Type	Pressure Sensing
Maximum Operating Temperature	+121 °C	Division	Hydraulic Systems Division
Seal Material	Nitrile	Pressure Control Range	200-3000 PSI, 13.8-210 BAR
Adjustment Mechanism	Knob	Maximum Flow Rate	1 GAL/MIN, 3.75 L/MIN

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