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Hydraulics

R4R Series Pressure Reducing Valves

Series R4R pressure reducing valves are used to control the pressure in the secondary part of the hydraulic system. Independent of the primary pressure the secondary pressure is reduced to the pressure setting. In order to avoid undesired motion the valves are normally closed.

  • Specifications
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    Mechanical

    Interface Subplate mounting acc. ISO 5781 -
    Mounting Position As desired, horizontal mounting preferred -
    Maximum Operating Pressure Ports A, B, and X: 350 bar (5,075 psi) Port Y: Depressurized
    Pressure Range up to 105, 210, 350 bar (1,523, 3,045, 5,075 psi) -
    Nominal Flow Size NG10: 150 LPM (39.7 GPM) -
    Size NG25: 350 LPM (92.6 GPM) -
    Size NG32: 500 LPM (132.3 GPM) -
    Pressure Fluid Hydraulic oil according to DIN 51524 … 51525 -
    Pressure Fluid Temperature Recommended: +30°C to +50°C (86°F to +122°F) Maximum: -20°C to +70°C (-4°F to +158°F)
    Viscosity Recommended: 30 to 50 cSt (mm²/s) Maximum: 20 to 380 cSt (mm²/s)
    Filtration ISO 4406 (1999), 18/16/13 -

    Environmental

    Ambient Temperature Range -20°C to +80°C (-4°F to +176°F) -
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