Proportional Directional Valve 4WRZ25W6-220-7X/6EG24N9K4/D3M - Bosch Rexroth R900977903

A central pilot circuit feeds several valves at one common pressure level. The 4WRZ25W6-220-7X/6EG24N9K4/D3M adapts to it because it reduces its pilot pressure itself, and it controls 220 l/min nominal flow.

Benefits

• External supply and external return, the valve hangs entirely on the shared pilot circuit.
• Own pressure reducing valve in the pilot stage, circuit pressure may sit above the required control pressure.
• 220 l/min nominal flow, flow up to 870 l/min, spool symbol W6 in size 25.
• 20.38 kg weight, 350 bar maximum operating pressure on the ISO 4401-08-08-0-05 pattern.
• Concealed auxiliary actuation, commanded at 24 VDC through an external amplifier.

Applications

Plants with several controlled axes fix pilot pressure and filtration grade in one place. Each valve then limits its control pressure to its own demand. That simplifies laying out the circuit and makes later extensions easier.

Manufacturer

Bosch Rexroth, material number R900977903. Permitted circuit pressure and pilot oil demand per valve are given in data sheet RE 29115, range overview in RE 07600-B.