Proportional Directional Valve 4WRZ25W8-325-7X/6EG24N9K4/D3M - Bosch Rexroth R900704606

On the 4WRZ25W8-325-7X/6EG24N9K4/D3M the pilot oil supply and return run through lines of their own. The pilot stage is therefore independent of the state of the main circuit, at a nominal flow of 325 l/min and 350 bar permissible operating pressure.

Benefits

• External pilot oil supply and external return, pilot stage fully decoupled.
• Nominal flow 325 l/min, maximum flow 870 l/min.
• Spool symbol W8 with 3 switching positions and 4 ports in size 25.
• Integrated pressure reducing valve keeps pilot pressure at a constant level.
• 20.42 kg, NBR seals, external electronics, connection diagram ISO 4401-08-08-0-05.

Applications

This routing is chosen when pressure varies in the main circuit and back pressure builds in the return as well. Pilot supply and pilot drain are then kept apart. Piping effort is higher, but switching times stay the same across the whole cycle.

Manufacturer

The manufacturer is Bosch Rexroth, material number R900704606, product family 4WRZ(E). Data sheet RE 29115 describes all pilot oil routing variants, RE 07600-B provides the range overview.