Proportional Directional Valve 4WRZ10W8-85-7X/6EG24K4/M - Bosch Rexroth R901091380

An existing pilot supply makes main channel flow independent of switching behaviour. The 4WRZ10W8-85-7X/6EG24K4/M uses it through the external pilot port and opens proportionally to the command value at 85 l/min nominal flow.

Benefits

• 85 l/min nominal flow, up to 170 l/min in the main channel at 315 bar.
• Pilot oil in and out externally, pilot pressure stays decoupled from working pressure.
• Spool symbol W8, 3 switching positions, 4 ports, ISO 4401-05-05-0-05 pattern.
• 7.78 kg in subplate mounting, size 10.
• 24 VDC, external electronics, 7-pole (6 + PE) plug to EN 175201-804, NBR seals.

Applications

Valves of this kind run in presses, drawing lines and test rigs where a small pilot pump or an accumulator keeps pilot pressure constant. Switching time therefore stays stable even when working pressure in the main channel drops. The valve replaces identical units of the same pilot variant without changes to the subplate.

Manufacturer

Bosch Rexroth lists this item under material number R901091380, product family 4WRZ(E). Further data is given in datasheet Proportional directional valve, pilot-operated (RE 29115) and Hydraulic valves and hydro- (RE 07600-B).