4WE6H73A6X/EG24N9DK35L/A12V

The 4WE6H73A6X/EG24N9DK35L/A12V directional spool valve is manufactured by Bosch Rexroth for the WE Directional Spool Valves series. It directs hydraulic flow between actuator and pump lines in automated circuits where rapid, repeatable switching is required. The subplate mounting follows the ISO 4401-03-02-0-05 (NFPA D03) porting pattern, allowing direct interchange with standard D03 manifolds. During energized operation it withstands pressures up to 350 bar at ports A, B, and P, and passes up to 80 l/min of direct-current rated flow without exceeding performance limits. The solenoid is designed for a 24 V DC supply, draws 30 W at nominal load, and can remain energized continuously thanks to a 100 % duty cycle. An M12×1 four-pole electrical connector coded DK35L provides plug-in power and control lines while maintaining the IP65 enclosure rating against dust and water jets. Total mass is 1.95 kg, which keeps manifold assemblies lightweight.

For maintenance and contamination control, the valve requires hydraulic fluid cleanliness not worse than ISO 4406 class 20/18/15 to protect the spool lands from premature wear. A concealed N9 manual override lets technicians shift the spool mechanically when electrical power is unavailable, and the override may be used when tank pressure is below 50 bar. The housing accepts tank port back-pressure up to 210 bar in direct-current service, so return lines can share common resistive circuits. Coil insulation and winding design permit surface temperatures up to 120 °C during continuous duty without damage. FKM seals resist mineral oils and higher temperatures, ensuring reliable sealing throughout the expected thermal range. Together these characteristics integrate the valve safely into hydraulic automation systems that demand robust sealing, elevated back-pressure tolerance, and straightforward field service.