Bosch Rexroth | 4WRZ25W6-220-7X6EG24ETK4V
4WRZ25W6-220-7X/6EG24ETK4/V
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The 4WRZ25W6-220-7X/6EG24ETK4/V proportional directional valve is produced by Bosch Rexroth within the WRZ Proportional Directional Valves series. It meters hydraulic flow and controls actuator movement in automated circuits. The solenoid operates on 24 V DC and draws up to 1.5 A, with a cold coil resistance of 4.8 Ω that helps drive electronics regulate current precisely. Wiring is completed through a DIN EN 175301-803 connector. Internal pilot oil supply and internal pilot oil drain remove the need for external lines. The pilot stage is size 6 and contains a 2.8 mm throttle insert that sets pilot flow for stable spool positioning. Under a 10 bar pressure drop the valve delivers a nominal flow of 220 l/min, supporting mid-range actuator speeds.
The main stage passes up to 870 l/min and tolerates a maximum operating pressure of 350 bar at the working ports. The T-port can handle 30 bar when the internal drain is used. FKM seals are fitted to accommodate common hydraulic fluids, and overall hysteresis stays within 6% for consistent positioning accuracy. An IP65 housing guards the unit against dust and water jets when the mating connector is installed. The assembly weighs 18.2 kg, which must be supported by the manifold or machine frame. These characteristics create a proportional valve suited to demanding automation tasks that require precise, high-flow hydraulic control.
Technical Specifications
Coil Resistance (cold, 20°c)
4.8 Ω
Electrical Connection
DIN EN 175301-803
Hysteresis (max)
6%
Ingress Protection
IP65
Max Main Valve Flow
870 l/min
Max Operating Pressure (main Valve)
350 bar
Max T-port Pressure (internal Drain)
30 bar
Nominal Flow (Δp=10 Bar)
220 l/min
Pilot Oil Drain
Internal
Pilot Oil Supply
Internal
Pilot Throttle Insert Diameter
2.8 mm
Pilot Valve Size
6
Seals
FKM
Solenoid Max Current
1.5 A
Supply Voltage
24 V DC
Weight
18.2 kg
1620 Old Apex Road
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