Proportional Directional Valve 4WRZ25W6-325-7X/6EG24N9TK4/V - Bosch Rexroth R900953921

At start-up the main channel carries no pressure that could feed a pilot stage. The 4WRZ25W6-325-7X/6EG24N9TK4/V therefore draws pilot oil from a dedicated line and afterwards meters 325 l/min nominal flow through spool symbol W6.

Benefits

• Pilot oil supplied externally, returned internally, the valve can shift before pressure builds.
• 325 l/min nominal flow, with up to 870 l/min passing the main stage.
• Spool symbol W6 with 3 switching positions across 4 ports, size 25.
• 350 bar maximum operating pressure on the ISO 4401-08-08-0-05 interface.
• 19.98 kg weight, FKM seals, concealed auxiliary actuation, 24 VDC supply.

Applications

This version is needed on plants that must travel from standstill into a defined position, such as lifting gear with load holding. The pilot power unit starts before the main pump and provides pilot pressure. An internal pressure reducing valve is not fitted.

Manufacturer

Bosch Rexroth, material number R900953921. Characteristic curves, step response and installation dimensions appear in data sheet RE 29115, supplemented by catalogue RE 07600-B.