4WRZ16E150-7X/6EG24N9K4/D3V

The 4WRZ16E150-7X/6EG24N9K4/D3V valve belongs to the WRZ Proportional Directional Valves series and is manufactured by Bosch Rexroth for closed-loop hydraulic motion control. It regulates spool position according to an electrical input to modulate flow and direction in automated circuits. The solenoid operates from a 24 V DC supply so it can connect directly to common PLC outputs, and a coil resistance of 4.8 Ω at 20 °C fixes the steady-state current that the driver must deliver. A 100 % duty cycle permits uninterrupted energization during extended production runs, while a maximum coil temperature of 150 °C safeguards the winding insulation against overheating. Wiring is handled with a DIN EN 175301-803 connector, simplifying field replacement. The unit is built in size 16, providing passage areas suitable for medium-flow power units, and the ISO 4401-07-06-0-94 porting pattern fits standard subplates to streamline manifold layout. A subplate mass of 13.4 kg influences lifting choices and bracket design during installation.

The valve delivers a nominal flow of 150 l/min at a 10 bar differential, supplying the speed demanded by cylinders and motors in automated machinery. Pilot oil consumption reaches 5.5 l/min during a full 0 → 100 % control step, a figure the pump must accommodate. Hysteresis remains at or below 6 %, supporting repeatable positioning when the command signal reverses. The main stage tolerates operating pressures up to 350 bar, enabling high-force actuation, while an external pilot supply can be run at up to 100 bar and an internal D3 pilot feed can follow the system up to 350 bar, giving circuit designers alternative control strategies. Pilot drain pressure at port Y is limited to 30 bar to prevent feedback on the pilot spool, and return pressure at port T with external drain must stay below 250 bar to protect seals. These pressure and flow limits establish the safe working envelope required for precise proportional positioning tasks in hydraulic automation systems.