4WRZE25E220-7X/6EG24N9ETK31/A1D3V

The 4WRZE25E220-7X/6EG24N9ETK31/A1D3V proportional directional valve is produced by Bosch Rexroth within the WRZ Proportional Directional Valves series and serves to change flow direction and speed in hydraulic automation. A command signal of ±10 V furnishes the position reference so controllers can command the spool in both directions. The internal electronics draw up to 1.8 A, which determines power-supply sizing, while a 24 V DC supply voltage energizes the amplifier and solenoids. Electrical connection is through a DIN EN 175201-804 plug to simplify field wiring. Subplate installation uses the ISO 4401-08-07-0-94 interface, permitting direct interchange with other size 08 components, and the assembled unit weighs 18.4 kg, information important for manifold support. The hydraulic body tolerates a main operating pressure of 350 bar, allowing it to function in high-pressure circuits.

The valve delivers a nominal flow of 220 l/min at a 10 bar pressure drop, providing the basis for pump and cooling calculations. Hysteresis is held to 6 percent or less, which improves repeatability during closed-loop control. An IP65 protection class shields the electronics from dust and low-pressure water jets so additional enclosures are unnecessary. Continuous service is supported across a fluid temperature span from −20 °C to 80 °C and a viscosity range of 20 to 380 mm²/s, broad limits that cover most mineral hydraulic oils. FKM seals withstand these operating conditions and resist common fluid additives. A concealed manual override lets technicians shift the spool during commissioning while guarding against accidental operation. The internal drain port accommodates return flow up to 30 bar, a figure used when sizing back-pressure devices. Together, these specifications ensure consistent, precise motion control in automated hydraulic systems.