Proportional Directional Valve 4WRZE25E220-7X/6EG24N9K31/F1D3V - Bosch Rexroth R900775139

External pilot control together with a current command value gives the least sensitive variant in this series. At 220 l/min nominal flow with spool symbol E, both the hydraulic side and the signal path stay decoupled from disturbances.

Benefits

• External pilot feed and pilot return, pilot pressure independent of a load pressure up to 350 bar
• 4-20 mA command value, unaffected by cable length and electrical pick-up
• 220 l/min nominal flow, finer resolution than the 325 l/min version
• Spool symbol E, three switching positions, four ports
• Mass 20.74 kg, FKM seals, HL hydraulic fluid

Application

The combination has proved itself in plants with heavy electrical interference and strongly varying load pressure, such as forges and continuous casting lines. Each disturbance is dealt with separately. A dedicated pilot oil supply at an adequate pressure level is the precondition.

Manufacturer

The manufacturer is Bosch Rexroth and the material number is R900775139. Data sheet RE 29115 carries all characteristic curves and installation data, complemented by overview RE 07600-B.