Proportional Directional Valve 4WRZE32W6-520-7X/6EG24N9TK31/F1D3M - Bosch Rexroth R901256919

If the pump drops to unloaded circulation within the cycle, an internally piloted valve loses control pressure right there. The 4WRZE32W6-520-7X draws pilot oil from its own circuit instead, controlling 520 l/min at 350 bar regardless.

Benefits

• External pilot oil supply keeps control pressure up even while the main circuit runs unloaded.
• 4 to 20 mA current command tolerates voltage drop on long cables, supply 24 VDC.
• 520 l/min nominal flow against a flow limit of 1600 l/min.
• Spool symbol W6 with three switching positions across four ports.
• 350 bar operating pressure, NBR seals, HL hydraulic fluid, 43.93 kg.
• Internal pilot oil return on the ISO 4401-10-09-0-05 pattern, 7-pole connector (6 + PE) to EN 175201-804.

Application

The arrangement fits plants with their own control oil pump, such as large presses or accumulator-fed test benches. There the main circuit is relieved between strokes while the pilot supply keeps running. The valve therefore stays controllable in every state, with concealed auxiliary actuation covering the fault case.

Manufacturer

Bosch Rexroth, material number R901256919, product family 4WRZ(E), conformity UKCA under SI2016/1091. Pilot pressure, curves plus mounting position are documented in data sheet RE 29115, with the range overview in RE 07600-B.