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Picture of Unloading Relief Valves - RU104S12B

*PRODUCT IMAGE IS REPRESENTATIVE PROVIDED BY THE MANUFACTURER. DO NOT MAKE BUYING DECISIONS SOLEY BASED ON THE IMAGE. PLEASE VERIFY SPECIFICATIONS MEET YOUR REQUIREMENTS.

Unloading Relief Valves - RU104S12B

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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SKU RU104S12B
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Products specifications
Attribute nameAttribute value
Adjustment MechanismScrewMaximum Flow Rate0.25 GAL/MIN, 1 L/MIN
Pressure Control Range800-1200 PSI, 55.2-82.7 BARSeal MaterialD-Ring (Standard)
Maximum Flow Rate0.25 Gal/minOperating Temperature-35 to +250 °F
Valve MaterialAll parts steel. All operating parts hardened steelMaximum Operating Temperature+93 °C
Filter Efficiency RatingISO 4406 18/16/13, SAE Class 4Flow Rate0.25 Gal/min
Maximum Kinematic Viscosity45-2000 SSU (6 to 420 cSt)Cavity SizeC10-4
DivisionHydraulic Systems DivisionFunctionUnloading Relief Valve
Pressure Control Range55.2-82.7 barMaximum Pressure Setting1200 psi
Maximum Operating Pressure3600 psiStandard Setting Pressure69 bar
Body Materialn/aFor Fluid TypeMineral-based or synthetic hydraulic fluids
Minimum Operating Temperature-35 °FMaximum Tank Pressure3000 psi
Installation Torque50-56 NmLeak Rate48 @ 3000 PSI (250 BAR) cm3/min
Weight1 kgDivisionHydraulic Cartridge Systems Division
Maximum Inlet Pressure Rating250 barActuation TypePressure Sensing
Seal MaterialD-Ring (Standard)Adjustment MechanismScrew
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