Proportional Directional Valve 4WRTE25E1-220P-4X/6EG24ETK31/A1M - Bosch Rexroth R901394540

Not every control block has ports for a separate pilot oil network. The 4WRTE25E1-220P-4X/6EG24ETK31/A1M feeds its pilot stage internally from the pressure port and relieves it internally to tank, so 220 l/min at up to 350 bar works with four ports only.

Benefits

• Internal pilot oil supply and internal return save two extra lines inside the manifold.
• 220 l/min nominal flow with 3 switching positions and spool symbol E1 for a fine control range.
• Internal spool position feedback secures repeat accuracy up to the 350 bar operating pressure.
• Plus or minus 10 V command into on-board electronics, 24 VDC through a 7-pole connector (6 + PE) to EN 175201-804.
• Mounting pattern ISO 4401-08-08-0-05, NBR seals, 17.62 kg and therefore the lightest valve of this group.

Technical data

Applications

The valve suits compact power units and control blocks that provide no separate pilot circuit. Because pilot pressure comes out of the working pressure, the pressure port has to stay sufficiently loaded. Under changing loads the spool position measurement keeps the characteristic curves constant.

Manufacturer

Bosch Rexroth, material number R901394540. In the type code 4WRTE25E1-220P-4X/6EG24ETK31/A1M the letters ET mark internal pilot routing, alongside size 25, spool symbol E1 and 220 l/min nominal flow.