Proportional Directional Valve 4WRZE25W9-325-7X/6EG24N9K31/F1D3V - Bosch Rexroth R900730222

Twenty metres of cable between the control cabinet and the valve make a current signal the safer choice. The 4WRZE25W9-325 accepts a 4 to 20 mA command value and controls 325 l/min nominal flow with pilot oil supplied and returned through external lines.

Benefits

• Command value 4 to 20 mA, insensitive to voltage drop over long cables.
• 325 l/min nominal flow, up to 870 l/min in size 25.
• External pilot supply and external pilot return, pilot control stays fed even when the main circuit is unloaded.
• 350 bar operating pressure with FKM seals, hydraulic fluid HL.
• On-board electronics, 7-pole connector (6 + PE) to EN 175201-804.
• 20.58 kg weight, connection diagram ISO 4401-08-08-0-05.

Applications

The version pays off wherever the main circuit is unloaded at times while pilot control still needs pressure, for example presses with a rapid stroke and a pressure holding phase. The separate pilot source can be a small auxiliary pump. Three switching positions across four ports.

Manufacturer

Bosch Rexroth, material number R900730222, product family 4WRZ(E). Data sheets RE 29115 and RE 07600-B cover characteristic curves and mounting dimensions.