Electric control valve is a kind of hydraulic operated valve with solenoid valve as guide valve. It is often used in automatic control of water supply and drainage and industrial system. The control response is accurate and fast. It can open and close the pipeline system remotely according to the electric signal to realize remote operation. It can replace gate valve and butterfly valve for large-scale electric operation system. The closing speed of the valve can be adjusted and the pressure wave can not be produced when the valve closes smoothly. Active, the valve is small in size, light in weight, simple in maintenance, convenient in use, safe and reliable. The solenoid valve can choose 220V alternating current or 24V direct current, and can choose either normally open or normally closed type according to various occasions.