Proportional Directional Valve 4WRTE25E220L-4X/6EG24K31/A1M - Bosch Rexroth R900954281

Pilot operated valves need a minimum pilot pressure. In circuits that occasionally work close to zero bar, an external pilot supply is therefore mandatory. This 4WRTE25E220L-4X is built that way, drains pilot oil externally as well, and controls 220 l/min nominal flow at up to 870 l/min total flow.

Benefits

• External pilot oil supply secures minimum pilot pressure even at low working pressure
• External pilot oil return, independent of pressure in the tank line
• 220 l/min nominal flow, 870 l/min maximum flow
• Spool symbol E, three switching positions, four ports
• Analog ±10 V command value, on-board electronics, 350 bar operating pressure

Applications

Required in circuits with unloading or accumulator operation where system pressure temporarily drops close to zero. A separate pilot power unit keeps pilot pressure constant during that time. The 220 l/min nominal flow covers medium sized axes.

Manufacturer

Bosch Rexroth, material number R900954281, type 4WRTE25E220L-4X/6EG24K31/A1M, component series 4X.