• S M Shah & Company

Solenoid Direction Control Valves

Solenoid Direction Control Valves are available with CETOP 3, 5 and 8 sizes with spool centre conditions like open, closed, float and tandem type. The basic function of directional valves is to start, stop and control the direction of fluid flow. Direction control valves consist of housing, one or two solenoids, control spool and one or two return springs. In the deenergised condition the control spool is held in neutral or initial position by means of return springs. The control spool is operated by wet pin solenoids. The force of solenoid acts via the plunger on the control spool and pushes this from its neutral position to the required end position. This gives free flow from P to A or B and A to T. When the solenoid is de-energised the control spool is returned to its neutral position by means of return springs. While changing the coil it is not necessary to open the pressure tight chamber. To guarantee satisfactory operation care should be taken that the solenoid pressure chamber is filled with oil. Solenoid operated direction valves control the start/stop and direction of flow. They are also used as pilot valves to operate other valves and so on.