Proportional Directional Valve 4WRTE27E500L-4X/6EG24TK31/A1M - Bosch Rexroth R901422545

Test benches often run a dedicated pilot pump so that the pilot stage stays independent of load pressure. The 4WRTE27E500L-4X/6EG24TK31/A1M is arranged for that case, with external supply, internal return and 500 l/min nominal flow in size 27 with spool symbol E.

Benefits

• External pilot oil supply decouples control from pressure in the working circuit.
• Internal pilot return saves one line compared with the fully external variant.
• Nominal flow 500 l/min at 270 bar operating pressure, maximum 1000 l/min.
• Spool symbol E with 3 switching positions and ±10 V command value through on-board electronics.
• Connection diagram ISO 4401-08-07-0-05, 4 ports, NBR seals, weight 19.3 kg.

Applications

The valve drives test cylinders, loading frames and lifting axes with a high volume demand. Because the pilot stage has its own supply, response stays the same even when system pressure swings widely. Spool symbol E defines the behaviour of the centre position in the existing circuit.

Manufacturer

Bosch Rexroth, material number R901422545. The type code 4WRTE27E500L-4X/6EG24TK31/A1M states the 4WRTE series, size 27, spool symbol E and 500 l/min nominal flow.