Proportional Directional Valve 4WRZE25W8-325-7X/6EG24N9EK31/A1D3V - Bosch Rexroth R900964707

On the retract stroke of a large cylinder, pressure in the return line jumps, and that is exactly when the pilot stage should stay calm. This size 25 valve therefore separates the control-oil return while still taking the oil internally, and meters 325 l/min nominal flow at up to 350 bar.

Benefits

• 325 l/min nominal flow for short rapid-traverse times, up to 870 l/min possible through the valve.
• External pilot oil return, independent of pressure in the working return line.
• Internal control-oil take-off, so the external supply line is not needed.
• ±10 V command value at the on-board electronics, 24 VDC supply voltage.
• Spool symbol W8, 4 ports, 3 switching positions, ISO 4401-08-08-0-05, weight 20.7 kg.

Applications

The variant is used on presses and drawing lines with a high stroke rate and on test cylinders with fast load changes. The separated control-oil return has to run pressureless to tank. The concealed manual override remains available for set-up work.

Manufacturer

Bosch Rexroth, material number R900964707. Product family 4WRZ(E), pilot-operated, FKM seals, HL hydraulic fluid, subplate mounting. Further details are given in data sheets RE 29115 and RE 07600-B.