Proportional Directional Valve 4WRDE25V1-350L-6X/MXY/24A5 - Bosch Rexroth R901550673

In circuits with an accumulator or a load-sensing pump, system pressure drops in phases and the pilot stage loses its control pressure. The 4WRDE25V1-350L-6X/MXY/24A5 is therefore supplied with pilot oil externally and drains externally as well, at 350 l/min nominal flow.

Benefits

• External pilot supply through X, external drain through Y, independent of the working pressure of the axis.
• 350 l/min nominal flow in size 25, flow capability up to 870 l/min.
• Symbol V1 with three switching positions and four ports.
• Internal spool position feedback for repeatable positions in a closed loop.
• 350 bar operating pressure, 17.5 kg weight, on-board electronics on 24 V DC.

Application

External supply is needed on accumulator-driven presses, on test rigs with changing load profiles and anywhere working pressure temporarily falls below pilot pressure. A dedicated constant-pressure line or a small pilot pump covers that duty. The unpressurised Y drain keeps back pressure off the pilot stage.

Manufacturer

Bosch Rexroth, material number R901550673, product family 4WRDE, size 25. NBR seals, HL hydraulic fluid, ISO 4401-08-08-0-05 subplate interface.