Proportional Directional Valve 4WRZE25E220-7X/6EG24N9ETK31/A1M - Bosch Rexroth R901289224

An accumulator circuit can make pump pressure collapse, and a shared return line can lift it again. The 4WRZE25E220-7X/6EG24N9ETK31/A1M escapes both by taking pilot oil externally and draining it externally, at 220 l/min nominal flow and 350 bar operating pressure.

Benefits

• External pilot oil supply secures the pilot stage when pressure in port P drops.
• External pilot oil drain keeps surges from the return line away from the pilot stage.
• 220 l/min nominal flow and up to 870 l/min maximum flow.
• A ±10 V command value, on-board electronics, 24 VDC supply through a 7-pole connector (6 + PE) to EN 175201-804.
• Spool symbol E, ISO 4401-08-08-0-05 mounting pattern, NBR seals, 20.18 kg valve mass.

Application

Useful in plants with accumulator operation and several axes moving at once. Separate lines have to be planned for both pilot oil paths. After that the control loop stays predictable even under strongly changing load.

Manufacturer

Bosch Rexroth lists this valve under material number R901289224. Electrical connection is a 7-pole connector (6 + PE) to EN 175201-804. The manufacturer datasheet with characteristic curves, port pattern and installation dimensions is available in the download area of this page.