Proportional Directional Valve 4WRZE25W9-220-7X/6EG24N9K31/F1M - Bosch Rexroth R901115112

Accumulator operation and strongly varying system pressure put limits on an internal pilot stage. The 4WRZE25W9-220-7X/6EG24N9K31/F1M avoids that with external pilot supply and external return, while delivering 220 l/min nominal flow at 350 bar.

Benefits

• External pilot oil supply and external return keep the pilot stage fed at every operating point
• 220 l/min nominal flow in size 25, up to 870 l/min maximum
• Version without a pressure reducing valve in the pilot stage
• Concealed manual override, protected against accidental adjustment
• Current interface 4 to 20 mA on a 24 V DC supply
• Spool symbol W9, mounting pattern ISO 4401-08-08-0-05, mass 20.34 kg

Applications

The variant belongs on accumulator presses, forging lines and test rigs with widely varying system pressure. Its own pilot circuit keeps the pilot stage working even when working pressure collapses briefly. At 220 l/min it covers large size 25 cylinders.

Manufacturer

Bosch Rexroth, material number R901115112, type designation 4WRZE25W9-220-7X/6EG24N9K31/F1M. The matching datasheets are Proportional directional valve, pilot-operated (RE 29115) and Hydraulic valves and hydro- (RE 07600-B).