Bosch Rexroth | 4WRZE25W6-325-7X6EG24N9ETK31A1D3V
4WRZE25W6-325-7X/6EG24N9ETK31/A1D3V
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The 4WRZE25W6-325-7X/6EG24N9ETK31/A1D3V proportional directional valve belongs to the WRZ Proportional Directional Valves series and is produced by Bosch Rexroth for closed-loop hydraulic control tasks. Its nominal size of 25 establishes the flow passage area, while a nominal flow of 325 l/min at a 10 bar pressure drop supports high-volume actuators. The main stage tolerates a maximum operating pressure of 350 bar, and the tank port is limited to 30 bar so return lines stay within sealing limits. A porting pattern that follows ISO 4401-08-07-0-94 simplifies subplate mounting in standardized manifolds. Internal pilot oil supply and drain reduce external tubing on installations that share system pressure. A concealed manual override labeled N9 lets maintenance staff shift the spool without energizing the coil. The unit weighs 18.4 kg, a consideration for bracket strength and handling equipment during assembly.
An onboard amplifier accepts a 24 V DC supply, drawing 1.8 A during normal operation, and interfaces with controllers through a ±10 V command signal to position the spool. Coil resistance measured at 20 °C is 2 Ω, which defines steady-state current when the drive electronics apply full voltage. A 15 % command value overlap establishes a neutral zone that prevents unintended movement around the center position. The coil can reach temperatures up to 150 °C without degradation, permitting sustained duty in warm manifolds. Electrical connection is made with a plug conforming to DIN EN 175201-804 for quick replacement in the field. Enclosure sealing meets IP65, preventing dust ingress and water jets from affecting the electronics.
Technical Specifications
Coil Resistance (20 °c)
2 Ω
Command Signal
±10 V
Command Value Overlap
15%
Current Consumption (obe)
1.8 A
Electrical Connection
DIN EN 175201-804
Manual Override
Concealed (N9)
Max Coil Temperature
150 °C
Max Operating Pressure (main)
350 bar
Max Port T Pressure (int Drain)
30 bar
Nominal Flow (w6, Δp=10 Bar)
325 l/min
Nominal Size
25
Pilot Oil Supply/drain
Internal (ET)
Porting Pattern
ISO 4401-08-07-0-94
Supply Voltage
24 V DC
Type Of Protection
IP65
Weight
18.4 kg
1620 Old Apex Road
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