4WRZE32E520-7X/6EG24N9ETK31/A1D3V

The 4WRZE32E520-7X/6EG24N9ETK31/A1D3V valve is produced by Bosch Rexroth within the WRZ Proportional Directional Valves series. It meters and switches hydraulic flow in automated systems using proportional control. The unit responds to a ±10 V command signal, enabling linear spool positioning from a standard analog controller. Internal pilot oil supply simplifies circuit design by eliminating external pilot lines, and the matching internal pilot drain routes pilot flow back to tank without additional plumbing. A nominal size of 32 provides a passage area suitable for high flow tasks, while the mounting interface follows ISO 4401-10-08-0-94 so it can drop onto common subplates. When the pressure drop is 10 bar, the valve passes 520 l/min, delivering significant volume for large actuators. The main stage tolerates system pressures up to 350 bar, allowing use in heavy-duty presses or injection machines. Electronic cards operate from a 24 V DC supply, integrating with standard machine power rails.

Maximum coil draw is limited to 1.8 A, permitting direct drive from most servo amplifier outputs without oversizing the power supply. Electrical termination is through a DIN EN 175201-804 connector, which provides secure sealing and quick field replacement. A concealed manual override lets technicians shift the spool during commissioning while protecting it from accidental actuation during service. The integrated ZDR 6 DP0-4X/40YM-W80 pressure-reducing valve stabilizes pilot pressure so that command signals produce predictable flow. With an internal drain, return flow pressure may rise to 30 bar before affecting performance, accommodating back-pressurized tanks. FKM seals resist high-temperature fluids and many synthetic oils, extending service intervals. An IP65 housing guards the electronics against dust and water jets, allowing installation on machinery that is cleaned with spray. The assembly weighs 42.2 kg, which should be considered when selecting mounting hardware and handling equipment.