Proportional Directional Valve 4WRTE27E500L-4X/6EG24EK31/F1M - Bosch Rexroth R901254425

A foundry drive can take pilot oil from the main circuit, but the pilot return should not fight the back pressure of the tank line. The 4WRTE27E500L-4X/6EG24EK31/F1M is arranged for exactly that, with 500 l/min nominal flow and a 4 to 20 mA command value.

Benefits

• Internal supply with external pilot return saves one line compared with the fully external version.
• A 4 to 20 mA current command survives long cables and drive-converter surroundings.
• Nominal flow 500 l/min in size 27, maximum 1000 l/min at 270 bar.
• Spool symbol E, 3 switching positions, on-board electronics with internal position feedback.
• Connection diagram ISO 4401-08-07-0-05, 4 ports, NBR seals, weight 19.3 kg.

Applications

The variant moves moulds, core pullers and closing cylinders in foundry and forming plants. The external pilot drain keeps pilot pressure free of feedback from the tank line. At 19.3 kg the valve is among the lighter versions of this frame size.

Manufacturer

Bosch Rexroth, material number R901254425. The type code 4WRTE27E500L-4X/6EG24EK31/F1M states size 27, spool symbol E, 500 l/min nominal flow and the external pilot return.