4WE6Q6X/EW110N9DAL/62SO43A-1750

The 4WE6Q6X/EW110N9DAL/62SO43A-1750 valve belongs to the WE Directional Spool Valves series produced by Bosch Rexroth for hydraulic automation circuits. It uses size 6 mounting, which defines the flow galleries and matches common subplate dimensions. The porting pattern ISO 4401-03-02-0-05 ensures dimensional interchangeability with other CETOP 03 devices. Compatibility with the NFPA T3.5.1 R2-2002 D03 interface allows integration into North American manifolds. An energized coil rated at 110 V 50/60 Hz shifts the spool to direct flow without mechanical linkage. The design supports a maximum flow of 60 l/min so that medium-capacity actuators can be supplied without excessive pressure loss. Pressure at ports p, A, and B may reach 350 bar, establishing the valve’s working envelope for high-pressure lines. Because the installation position is unrestricted, the unit can be oriented in any direction inside a manifold or pipe run.

A concealed manual override permits local actuation during commissioning or power loss while minimizing accidental operation. Electrical wiring passes through a cable gland threaded 1/2-14 NPT, providing a sealed strain-relief point. The enclosure carries an IP65 rating, protecting the coil and terminations against dust ingress and water jets. According to VDE 0580, the assembly is classified in protection class I, so a protective earth conductor must be connected. Back pressure at the tank port is limited to 160 bar, which prevents damage to the housing when return lines are restricted. The coil circuit tolerates a switch-off overvoltage up to 500 V, reducing the need for external surge suppressors. Hydraulic media must meet ISO 4406 cleanliness code 20/18/15 to maintain spool precision and service life. The mean time to dangerous failure is 300 years, indicating a very low probability of malfunction in normal service.