4WRZE25W6-220-7X/6EG24N9K31/A1D3V

The 4WRZE25W6-220-7X/6EG24N9K31/A1D3V valve belongs to the WRZ Proportional Directional Valves series from Bosch Rexroth and meters hydraulic flow in automated systems that require closed-loop position control. It operates on a 24 V DC supply voltage so that it can be powered directly from common machine control circuits. A ±10 V command interface receives the analog setpoint that defines spool position and therefore flow rate. The DIN EN 175201-804 plug provides the standardized electrical connection, simplifying field wiring and service. Hysteresis is held to ≤ 6 %, which improves repeatability when the spool shifts in both directions. A maximum operating pressure of 350 bar lets the valve work in high-pressure manifolds without external pressure boosters. The nominal flow rating of 220 l/min at a 10 bar pressure drop shows the throughput that can be achieved at typical system differential pressure. Nominal size 25 categorizes the valve body dimensions and aligns it with matching subplates. A 24 mm port P inlet diameter matches the flow specification and minimizes velocity-related losses inside the housing.

Mineral oil in grades HL or HLP to DIN 51524 is the approved hydraulic fluid, ensuring compatibility with seals and maintaining lubricity at the pressure stated earlier. A concealed manual override identified as N9 permits local actuation for setup or emergency movement without exposing a projecting pin. Pilot control uses size 6 hardware so the pilot valve can deliver precise pressure to the main stage without excessive flow demand. Ports A, b, and t share a 25 mm diameter, balancing return and service passages with the main flow path. The ISO 4401-08-07-0-94 port pattern defines mounting bolt locations so the valve mates with standard manifolds. An integrated ZDR 6 DP0-4X/40YM-W80 pressure reducing valve maintains a stable pilot pressure that keeps the proportional spool centered on its command. Spool symbol W6 describes flow paths in each shifted position, guiding circuit designers on how work ports are connected. The complete assembly weighs 18.4 kg when mounted on its subplate, a factor considered when sizing support brackets and service tooling.