Proportional Directional Valve 4WRZ25W8-325-7X/6EG24N9ETK4/D3M - Bosch Rexroth R900704477

The 4WRZ25W8-325-7X/6EG24N9ETK4/D3M uses the channels of the main circuit for pilot oil supply and return. Nominal flow is 325 l/min, up to 870 l/min is allowed at the limit and operating pressure may reach 350 bar.

Benefits

• Internal pilot oil supply and internal return, no additional lines at the block.
• Nominal flow 325 l/min at a limit flow of 870 l/min.
• Spool symbol W8, pilot-operated spool valve with 3 switching positions.
• Concealed auxiliary actuation on the valve, usable during commissioning.
• 20.54 kg, NBR seals, external electronics, connection diagram ISO 4401-08-08-0-05.

Applications

This version is the standard answer for circuits with permanently applied system pressure and a largely unpressurised tank channel. It saves two bores in the block and the lines that go with them. With accumulator operation or back pressure in the return, external pilot oil routing is the better fit.

Manufacturer

The manufacturer is Bosch Rexroth, material number R900704477, product family 4WRZ(E). Characteristic curves, limit performance and installation dimensions are in data sheet RE 29115, RE 07600-B places the series.