Proportional Directional Valve 4WRZE25W6-220-7X/6EG24N9TK31/A1M - Bosch Rexroth R901178888

When many valves work into the same return line, pressure builds there and disturbs the pilot stage. The 4WRZE25W6-220-7X/6EG24N9TK31/A1M therefore drains its pilot oil separately to tank and meters 220 l/min nominal flow at 350 bar operating pressure.

Benefits

• External pilot oil drain separates the pilot stage from the shared return line.
• Spool symbol W6 with three switching positions across four ports.
• 220 l/min nominal flow and up to 870 l/min maximum flow in size 25.
• A ±10 V command value at the on-board electronics, 24 VDC supply.
• 350 bar operating pressure, NBR seals, 20.2 kg valve mass, ISO 4401-08-08-0-05 mounting pattern.

Application

Intended for manifolds in press lines and test fields with a shared tank gallery. The extra line for the pilot oil drain has to be provided during assembly. Size 25 also feeds cylinders with high volume demand.

Manufacturer

Bosch Rexroth lists this valve under material number R901178888. Conformity is documented as UKCA for electromagnetic compatibility under SI2016/1091. The manufacturer datasheet with characteristic curves, port pattern and installation dimensions is available in the download area of this page.