4WRZE16W6-150-7X/6EG24N9EK31/A1D3M

The 4WRZE16W6-150-7X/6EG24N9EK31/A1D3M proportional directional valve is produced by Bosch Rexroth and belongs to the WRZ Proportional Directional Valves series. This valve meters flow and direction in closed-loop hydraulic drives where precise actuation is needed. It is built in size 16, which defines the port geometry and mounting footprint for mid-range circuits. A nominal flow of 150 l/min at a differential pressure of 10 bar allows it to control cylinders or motors with moderate to high flow demand. The assembly withstands operating pressures up to 350 bar so it can be placed on high-pressure lines without external pressure reducers. Electrical actuation is powered from a 24 V DC supply, while the integrated electronics accept a ±10 V command signal to translate control system outputs into spool position. The solenoid draws up to 2.5 A during full stroke, enabling rapid response without excessive power dissipation. Connection to the machine harness is made through a DIN EN 175201-804 plug, and the housing meets IP65 so the electronics remain protected against dust and water spray.

Pilot control is handled by an NG6 valve, so the pilot valve size is 6 and the pilot supply and drain can be selected as internal or external to match the system’s available pressure lines. A built-in pressure reducing cartridge identified as ZDR 6 DP0-4X/40YM-W80 stabilizes the pilot stage, maintaining consistent actuation regardless of main line fluctuations. The unit is intended for use with mineral oil hydraulic fluids classified as HL or HLP per DIN 51524, ensuring compatibility with standard industrial oils. A concealed manual override permits mechanical shift of the spool during commissioning or in case of electrical failure without exposing moving parts. Mounting follows the ISO 4401-07-06-0-94 porting pattern, and the W6 spool symbol defines the flow paths obtainable under each energized condition. The complete valve weighs 13.6 kg, facilitating installation on manifolds or subplates without additional support.