Solenoid valve (Electromagnetic valve) is controlled by an electromagnetic industrial equipment, automation infrastructure element is used to control fluids belonging to the actuator is not limited to hydraulic, pneumatic. Adjust the media used in industrial control systems direction, flow, speed and other parameters. Solenoid valve can be used with different circuits to achieve the desired control, and precision control and flexibility are guaranteed. There are many solenoid valves, solenoid valves play a different role in different position control system, the most commonly used is a one-way valve, safety valve, directional control valve, speed control valve.