Bosch Rexroth | 4WRZ25W6-325-7X6EG24N9EK4M
4WRZ25W6-325-7X/6EG24N9EK4/M
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The 4WRZ25W6-325-7X/6EG24N9EK4/M proportional directional valve is built by Bosch Rexroth and belongs to the WRZ Proportional Directional Valves series. It meters flow in hydraulic automation circuits requiring closed-loop electrical actuation. The unit works on a 24 V DC supply and draws a maximum of 1.5 A, while the coil resistance at 20 °C is 4.8 Ω to limit inrush. The coil can reach temperatures up to 150 °C without loss of function. Electrical termination is through a DIN EN 175301-803 connector and the enclosure carries an IP65 protection rating to block dust and water jets. A concealed manual override allows mechanical shifting during setup or power loss, and NBR seals maintain fluid isolation. The assembly weighs 18.2 kg, supporting rigid mounting in pressurized manifolds.
The hydraulic stage handles a nominal flow of 325 l/min at a 10 bar pressure drop and permits a maximum of 870 l/min through the main spool for high-capacity actuators. The main valve tolerates operating pressures up to 350 bar, while port Y is limited to 30 bar and the external drain at port T may return oil at up to 250 bar. Pilot oil is supplied internally, reducing external plumbing, and is drained externally to keep the pilot circuit free of back-pressure. These hydraulic ratings enable proportional directional control in demanding automation loops where high flow and pressure stability are required.
Technical Specifications
Coil Resistance (20 °c)
4.8 Ω
Electrical Connection
DIN EN 175301-803
Manual Override
Concealed
Max Coil Temperature
150 °C
Max Current
1.5 A
Max Flow (main Valve)
870 l/min
Max Operating Pressure (main Valve)
350 bar
Max Pressure (port Y)
30 bar
Max Return Pressure (port T, Ext Drain)
250 bar
Nominal Flow
325 l/min (Δp=10 bar)
Pilot Oil Drain
External
Pilot Oil Supply
Internal
Seals
NBR
Supply Voltage
24 V DC
Type Of Protection
IP65
Weight
18.2 kg
1620 Old Apex Road
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