Bosch Rexroth | 4WRZE25E1-220-7X6EG24N9ETK31A1D3V
4WRZE25E1-220-7X/6EG24N9ETK31/A1D3V
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The 4WRZE25E1-220-7X/6EG24N9ETK31/A1D3V valve is a member of the WRZ Proportional Directional Valves series from Bosch Rexroth. It regulates hydraulic actuators by shifting a spool in response to an analog ±10 V command value signal. The integrated electronics run on a 24 VDC supply voltage to process this reference and energize the solenoid coils. A spool symbol E1 defines the metering edges used to direct flow between the service ports. The valve mounts on subplates that follow the ISO 4401-08-07-0-94 pattern, and it weighs 18.4 kg when installed in this configuration. Hydraulic lines connect to ports A, B, and T that have a diameter of 25 mm to accommodate high flow volumes. A nominal flow of 220 l/min is achieved at a differential pressure of 10 bar, while the main stage can accept operating pressures up to 350 bar. Both pilot oil supply and pilot oil drain are internal so no external lines are required for the pilot circuit.
Electrical interfacing is realized through a DIN EN 175201-804 plug, which simplifies wiring in modular manifolds. An IP65 protection rating shields the connector and enclosure from dust ingress and water jets during wash-down cycles. The coil windings are designed for continuous service up to 150 °C so thermal limits are maintained during sustained high duty operation. When fully shifted the valve can pass up to 870 l/min, supporting large cylinder or motor drives that require rapid motion. Return flow to tank is allowed at internal port T with pressures up to 30 bar, preventing cavitation when back-pressure builds in the circuit. FKM seals are fitted to resist common hydraulic fluids and elevated temperatures, ensuring long service life with minimal leakage.
Technical Specifications
Command Value Signal
±10 V
Electrical Connection
DIN EN 175201-804
Electrical Protection
IP65
Max Coil Temperature
150 °C
Max Flow Capacity
870 l/min
Max Operating Pressure (main)
350 bar
Max Return Pressure (t, Internal)
30 bar
Mounting Pattern
ISO 4401-08-07-0-94
Nominal Flow (Δp=10 Bar)
220 l/min
Pilot Oil Drain
Internal
Pilot Oil Supply
Internal
Port A/b/t Diameter
25 mm
Seal Material
FKM
Spool Symbol
E1
Supply Voltage (electronics)
24 VDC
Weight (subplate Mounting)
18.4 kg
1620 Old Apex Road
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