Proportional Directional Valve 4WRZE32E1-520-7X/6EG24N9EK31/F1D3V - Bosch Rexroth R901156929

A loaded return line distorts pilot pressure and with it the switching time. This 4WRZE32E1-520-7X therefore routes the pilot oil return separately to the outside while the supply stays internal, and it controls 520 l/min nominal flow in doing so.

Key benefits

• External pilot oil return keeps the control circuit free of back pressure from the working return line.
• Internal pilot oil supply saves a separate pilot pump in the power unit.
• 520 l/min nominal flow and 1600 l/min permitted flow for cylinders with a large piston area.
• Spool symbol E1 with three switching positions, connection diagram ISO 4401-10-09-0-05 for subplate mounting.
• Integrated electronics with a 4 to 20 mA command and 24 VDC supply, no external amplifier required.

Applications

This version makes sense on systems with a long or throttled tank return, for example presses with a cooler and filter in the return branch. Pilot pressure also stays stable when several valves work in parallel, because the return does not pass through the shared return line. Concealed auxiliary actuation is available for commissioning.

Manufacturer

Bosch Rexroth, material number R901156929, type designation 4WRZE32E1-520-7X/6EG24N9EK31/F1D3V. The data sheet Proportional directional valve, pilot-operated (RE 29115) holds the characteristic curves and dimensions, supplemented by Hydraulic valves and hydro- (RE 07600-B). Weight 43.82 kg.