Bosch Rexroth | 4WRZE25W8-220-7X6EG24N9EK31A1D3M
4WRZE25W8-220-7X/6EG24N9EK31/A1D3M
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The 4WRZE25W8-220-7X/6EG24N9EK31/A1D3M proportional directional valve is produced by Bosch Rexroth for the WRZ Proportional Directional Valves series and is used to regulate hydraulic flow in automation machinery. With a valve size of 25 it fits medium-capacity manifolds, and the W8 spool provides the metering geometry needed for bidirectional actuation. A nominal flow of 220 l/min at a 10 bar differential moves large actuators without excessive pressure loss, while the main stage withstands operating pressures up to 350 bar for high-pressure circuits. Electronic control relies on a ±10 V command so closed-loop drives can set position proportionally. The coils draw a maximum of 1.8 A from a 24 V DC supply, their resistance is 2 Ω at 20 °C for predictable current regulation, and a 100 % duty cycle allows continuous service.
The valve connects to system wiring through a DIN EN 175201-804 plug, and the assembly reaches IP65 protection when a sealed cable socket is used to block dust and oil spray. A concealed N9 manual override lets technicians shift the spool during commissioning without exposing internal parts. Pilot control is handled by a size 6 stage that receives oil internally and returns it through an external drain, which stabilizes pilot pressure. An integrated ZDR 6 DP0-4X/40YM-W80 pressure-reducing valve limits pilot pressure to the required level for smooth proportional movement. The subplate-mounted body weighs 18.4 kg, so installers must account for its mass when selecting support brackets and lifting tools.
Technical Specifications
Coil Resistance (20 °c)
2 Ω
Command Input
±10 V
Current Consumption (max)
1.8 A
Duty Cycle
100%
Electrical Connection
DIN EN 175201-804 Plug
Manual Override
Concealed (N9)
Max Operating Pressure (main)
350 bar
Nominal Flow (10 Bar ∆p)
220 l/min
Pilot Oil
Internal Supply, External Drain
Pilot Valve Size
6
Pressure Reducing Valve
ZDR 6 DP0-4X/40YM-W80
Protection Class
IP65 (with cable socket)
Spool Symbol
W8
Supply Voltage
24 V DC
Valve Size
25
Valve Weight (subplate, Size 25)
18.4 kg
1620 Old Apex Road
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