Solenoid valves introduction

A solenoid is an electromechanical device which allows for an electrical device to control the flow of a gas or liquid. The electrical device causes a current to flow through a coil located on the solenoid valve. This current flow in turn results in a magnetic field which causes the displacement of a metal actuator.
Solenoid valves are the most frequently used control elements in fluidics. Their tasks are to shut off, release, dose, distribute or mix fluids. Solenoid valves come in various configurations and sizes, such as 100 Series Solenoid Valve, 700 Series Solenoid Valve and 4V400 Series Solenoid Valve and so on.

Besides the plunger-type actuator which is used most frequently, pivoted-armature actuators and rocker actuators are also used.