Solenoid Valve is used to control the direction of the fluid automation of the basic components, belongs to the actuator; Usually used in mechanical control and industrial valves above, through a solenoid coil to control the position of the spool, cut off or connect the air source to achieve the purpose of changing the direction of fluid flow, to control the direction of the medium, so as to achieve the control of the valve switch. The solenoid valve is composed of several gas channels and the valve core, the valve core to connect or disconnect between the various gas channels
