The WE 6 AH directional control valve principally consists
of a valve body (1), a control spool (5) with two centering
springs (4) and either one or two operating solenoids (2+
3), depending on the application.
The three-position directional control valves are fitted with
two solenoids and two springs. Two-position directional
control valves have either one solenoid and one return
spring or two solenoids and a detent assembly.
The control spool (5) is shifted from its initial position into
the required end position by use of the solenoids (2 +
3).This enables the required direction of flow, P to A or B.
By de-energizing the solenoid the spool returns to the
centre or offset position.
The operating solenoids are DC solenoids. For AC supply
the solenoids are provided with a rectifier, which is
integrated directly into the connectors (6+7) or inside the
coil. The connectors can be turned by 90°.
By loosening the nut (8) the solenoids can be turned by
360° or replaced without interfering with any seals of the
valve.
In the case of malfunction or power failure, the spool of the
valve can be shifted by manual override (9).
The basic surface treatment of the valve body (1) is
phosphate coated and the solenoids (2 + 3) are zinc
coated.