Proportional Directional Valve 4WRZE25W6-220-7X/6EG24N9K31/F1M - Bosch Rexroth R900730472

Pressure pulsation in the working circuit carries over into an internally supplied pilot stage and makes the control restless. This version separates the two, because pilot oil is fed externally and returned externally, at 220 l/min nominal flow and 350 bar.

Benefits

• External supply and external return keep working circuit pulsation away from the pilot stage.
• 220 l/min nominal flow at 350 bar, up to 870 l/min maximum.
• 4...20 mA command with live zero for line monitoring.
• On-board electronics, 24 VDC supply, connection by 7-pole connector (6 + PE).
• ISO 4401-08-08-0-05 connection diagram, three switching positions with four ports.

Applications

This layout is found on plants with piston pumps, on baling presses and in machines with frequent load changes. The dedicated pilot supply can also be filtered more finely than the main circuit. HL hydraulic fluid with NBR seals is released.

Manufacturer

The manufacturer is Bosch Rexroth, material number R900730472. Further data on curves and installation is provided by data sheet RE 29115 and RE 07600-B.