Solenoid Valve

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Definition:-

                       A solenoid valve is an electromechanically operated valve. The valve is controlled by an electric current through a solenoid: in the case of a two-port valve the flow is switched on or off; in the case of a three-port valve, the outflow is switched between the two outlet ports.

Working Principal:-

                    An electric current through the coil creates a magnetic field. The magnetic field exerts a force on the plunger. As a result, the plunger is pulled toward the center of the coil so that the orifice opens. This is the basic principle that is used to open and close solenoid valves.


Types:-

1. Direct Acting Valves
2. Pilot-Operated Valves
3. Two-Way Valves
4. Three-Way Valves
5. Four-Way Valves

1.1 Direct Acting Valves
                       In a direct acting solenoid valve, a coil magnetically opens the valve in a direct action, lifting the shaft and the seat of the valve without depending on outside pressure. Direct acting solenoid valves do not use a diaphragm; their seal is part of the moving core.

Two Way NC Direct Acting Solenoid Valves have a spring that holds the core against the seal.  When the coil is charged the spring is overcome and the seal is lifted from the orifice seat thus opening the valve and allowing the media to pass through the valve.


Two Way NO Direct Acting Solenoid Valves have a fixed core which usually in the bottom section of the armature tube.  The armature is located in the upper part of the valve.  A stem passes through the fixed core and is coupled to the seal.  This is held off the seal by means of a spring and makes a seal when the coil is energized, thus closing the valve.

Written By:- Farhan Mustafa
Email :- farhanmustafa522@gmail.com



Comments

  1. Vinseo22 September 2017 at 11:30

    Hello, I love reading through your blog,
    We also manufacturer of Solenoid Valves

    ReplyDelete

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