4WRZE16E150-7X/6EG24N9K31/A1D3V

The 4WRZE16E150-7X/6EG24N9K31/A1D3V is a proportional directional valve produced by Bosch Rexroth in the WRZ Proportional Directional Valves series. It provides variable positioning of the main spool to regulate flow and direction in hydraulic automation loops. An analog command value input of ±10 V drives the amplifier so the operator can modulate spool position with standard control signals. A 24 V DC supply powers the pilot electronics, ensuring consistent solenoid response. The valve supports a maximum main pressure of 350 bar, enabling use in high-pressure machinery lines. Its nominal flow rate is 150 l/min at a differential pressure of 10 bar, matching medium-capacity actuators that require rapid movement. Nominal size 16 ports align with common manifold cavities, and the ISO 4401-07-06-0-94 mounting interface secures the body to subplates without custom drilling. A size 6 pilot valve with a detachable coil allows quick replacement of the electromagnetic section, reducing downtime during service.

External pilot supply and drain connections separate control fluid from the main return, preventing interaction with fluctuating tank pressure. The electrical interface follows DIN EN 175201-804 K31, giving the coil a standard plug connection for quick wiring. A concealed manual override labeled N9 lets maintenance personnel shift the spool mechanically when power is absent. The T port tolerates backpressure up to 250 bar, so the valve remains stable in circuits with significant return line restrictions. An integrated D3 pressure-reducing valve limits pilot pressure to a safe level for the control stage. FKM seals identified by the V code resist high temperatures and aggressive hydraulic media, extending service intervals. Peak current draw is 1.8 A, information needed when sizing the drive module in the control cabinet. The spool symbol E defines the internal land configuration for predictable flow paths, and a mass of 13.6 kg for the size 16 subplate version affects handling requirements during installation.