Proportional Directional Valve 4WRZE25W8-325-7X/6EG24N9K31/F1M - Bosch Rexroth R901055706

Back pressure in the tank line shifts the null position of a pilot-operated valve. This version therefore has both its own supply X and its own drain Y, and delivers 325 l/min from a 4...20 mA current command.

Benefits

• A dedicated pilot drain Y keeps the pilot stage clear of back pressure in the tank line.
• A dedicated supply X makes control pressure available independently of the working pressure.
• Nominal flow of 325 l/min with spool symbol W8, maximum flow 870 l/min.
• Operating pressure up to 350 bar, three switching positions, four ports, NBR seals.
• Command 4...20 mA into the on-board electronics, 24 VDC, mass 20.3 kg.

Applications

The layout pays off wherever several valves work into a shared tank line and build back pressure there, for example in large manifold assemblies on press lines. The Y line is routed to tank without pressure. Interface pattern ISO 4401-08-08-0-05 corresponds to size 25.

Manufacturer

Bosch Rexroth builds this valve under material number R901055706. Quote that number when ordering and keep it in the spare parts list of the machine. Characteristic curves, installation dimensions and connection diagrams are in data sheet RE 29115 and RE 07600-B.