Proportional Directional Valve 4WRZ25W8-325-7X/6EG24N9TK4/M - Bosch Rexroth R900723646

Demand-controlled drives cut working pressure far back as soon as the axis holds. So that pilot control is not affected, the 4WRZ25W8-325-7X/6EG24N9TK4/M draws its pilot oil externally and controls 325 l/min nominal flow with spool symbol W8.

Benefits

• External pilot supply, pilot pressure does not follow the lowered working pressure.
• Internal return, only the X line has to be routed in addition.
• 325 l/min nominal flow, flow up to 870 l/min, size 25.
• 20.2 kg weight, 350 bar maximum operating pressure, NBR seals, HL hydraulic fluid.
• Concealed auxiliary actuation and control at 24 VDC through an external amplifier.

Applications

The valve is intended for plants with a variable pump or a speed-controlled drive whose pressure level changes across the cycle. The separate X line holds pilot pressure constant while the working circuit is lowered. Pilot oil drains through the tank channel of the connection pattern.

Manufacturer

Bosch Rexroth, material number R900723646. Minimum pilot pressure and pilot oil demand are given in data sheet RE 29115, the range overview in RE 07600-B.