Bosch Rexroth | 4WRZE25E325-7X6EG24K31A1D3M
4WRZE25E325-7X/6EG24K31/A1D3M
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The 4WRZE25E325-7X/6EG24K31/A1D3M proportional directional valve is produced by Bosch Rexroth for the WRZ Proportional Directional Valves series. It serves hydraulic automation systems by regulating actuator flow with an electro-hydraulic spool. The unit installs on manifolds with the ISO 4401-08-07-0-94 mounting pattern and occupies nominal size 25 for large passage areas. A nominal flow of 325 l/min at a 10 bar differential provides predictable speed control, while a maximum main-stage flow of 870 l/min accommodates peak demands. The assembly tolerates operating pressures up to 350 bar. On-board electronics are supplied with 24 V DC through a DIN EN 175201-804 connector. NBR seals isolate the working fluid, and the housing weight of 18.4 kg offers mechanical stability during service.
The pilot stage is built to size 6 and contains a ZDR 6 DP0-4X/40YM-W80 pressure reducing valve to keep pilot pressure constant. Spool movement follows a ±10 V command signal; normal modulation draws up to 1.8 A, and a 3 A power pulse is available for rapid position changes. The enclosure carries an IP65 rating, so internal components resist dust ingress and water jets. Electrical coils can operate at temperatures as high as 150 °C without degrading insulation. These capabilities support reliable proportional amplification between the pilot and main stages under continuous, high-pressure operation.
Technical Specifications
Command Signal
±10 V
Electrical Connection
DIN EN 175201-804
Ingress Protection
IP65
Max Electronics Current
1.8 A
Maximum Coil Temperature
150 °C
Maximum Flow (main Valve)
870 l/min
Maximum Operating Pressure
350 bar
Mounting Pattern
ISO 4401-08-07-0-94
Nominal Flow (Δp = 10 Bar)
325 l/min
Nominal Size
25
Pilot Valve Size
6
Power Pulse Current
3 A
Pressure Reducing Valve
ZDR 6 DP0-4X/40YM-W80
Seal Material
NBR
Supply Voltage
24 V DC
Weight
18.4 kg
1620 Old Apex Road
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