Proportional Directional Valve 4WRZ32W8-520-7X/6EG24N9K4/M - Bosch Rexroth R900723645

An accumulator in the pilot circuit holds control pressure even when the main pump is switched off, which allows a defined move into the rest position. The 4WRZ32W8-520-7X/6EG24N9K4/M is laid out for exactly that, with external pilot supply and external return.

Benefits

• Pilot oil routed entirely externally, the valve stays able to switch as long as the pilot circuit carries pressure.
• 520 l/min nominal flow, up to 1600 l/min throughput in size 32.
• 350 bar maximum operating pressure, 43.2 kg, subplate mounting to ISO 4401-10-09-0-05.
• Spool symbol W8, 3 switching positions, 4 ports, including concealed auxiliary actuation.
• NBR seals for HL hydraulic fluid, commanded through an external amplifier.

Applications

The valve is used on large presses, lock gates and weir drives where a defined rest position has to be reached after the main pump stops. A separate pilot circuit can feed several main valves together. Signals arrive through a 7-pole (6 + PE) plug.

Manufacturer

Bosch Rexroth, material number R900723645. Details on pilot oil demand are held in data sheet RE 29115.