Asolenoid valveis an electromechanical device in which the solenoiduses an electric current to generate a magnetic field and thereby operate a mechanism which regulates the opening of fluid flow in avalve. ... Multiplesolenoid valve scan be placed together on a manifold.
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 closesolenoid valves. "Asolenoid valveis an electromechanical actuatedvalveto control the flow of liquids and gases."