Proportional Directional Valve 4WRZ25W6-220-7X/6EG24N9EK4/D3V - Bosch Rexroth R900952914

Where no separate pilot pump exists, pilot oil has to come from the main circuit. The 4WRZ25W6-220-7X/6EG24N9EK4/D3V works with internal supply and external return while metering 220 l/min of rated flow.

Benefits

• Rated flow of 220 l/min in size 25, with up to 870 l/min across the valve.
• Internal pilot oil supply and external pilot oil return on the pilot-operated main stage.
• Spool symbol W6 with three switching positions across four ports.
• Integrated pressure reducing valve keeps pilot pressure constant even when main pressure rises.
• 20.58 kg, FKM seals, operating pressure up to 350 bar, connection diagram ISO 4401-08-08-0-05.

Applications

The external return is needed when back pressure in the tank channel would disturb the pilot stage. The valve suits feed axes on machines with a single pump circuit.

Manufacturer

The valve comes from Bosch Rexroth and carries material number R900952914 in product family 4WRZ(E). Characteristic curves, limits and mounting dimensions are given in datasheet Proportional directional valve, pilot-operated (RE 29115) and Hydraulic valves and hydro- (RE 07600-B).