Proportional Directional Valve 4WRZE32W8-520-7X/6EG24N9TK31/F1D3V - Bosch Rexroth R901145311

If system pressure drops below the minimum pilot pressure, an internally piloted valve reacts slowly or not at all. This version therefore takes pilot oil from outside and switches reliably in the lower pressure range as well, at 520 l/min nominal flow.

Key benefits

• External pilot oil supply secures switching behaviour when working pressure falls below the pilot demand.
• Internal pilot oil return saves the separate line back to tank.
• 520 l/min nominal flow, permitted up to 1600 l/min, operating pressure up to 350 bar.
• On-board electronics with a 4 to 20 mA current command and 24 VDC supply through a 7-pole connector (6 + PE).
• FKM seals and spool symbol W8 for circuits with hot HL oil and a defined mid position.

Applications

The version is used in circuits with accumulator charging or load pressure control, where pressure at the valve varies widely. Pilot supply also stays available when a cold system starts up, because it hangs on a port of its own. Subplate mounting to ISO 4401-10-09-0-05 matches the standard for size 32.

Manufacturer

Bosch Rexroth, material number R901145311, type designation 4WRZE32W8-520-7X/6EG24N9TK31/F1D3V. Characteristic curves, performance limits and dimensions come from the data sheet Proportional directional valve, pilot-operated (RE 29115), alongside Hydraulic valves and hydro- (RE 07600-B). Weight 43.6 kg.