The main difference between solenoid valve and electric valve is the control method. The solenoid valve is controlled by solenoid, and the electric valve is controlled by electricity. Solenoid valve is an industrial equipment controlled by electromagnetic, and it is an automatic basic component used to control fluid. It belongs to actuator and is not limited to hydraulic and pneumatic. Used in industrial control systems to adjust the direction, flow, speed and other parameters of the medium. The solenoid valve can be matched with different circuits to achieve the desired control, and the control accuracy and flexibility can be guaranteed. There are many kinds of solenoid valves. Different solenoid valves play a role in different positions of the control system. The most commonly used ones are check valves, safety valves, directional control valves, speed control valves, etc. The electric valve simply uses the electric actuator to control the valve, so as to realize the opening and closing of the valve. It can be divided into upper and lower parts, the upper part is the electric actuator, and the lower part is the valve. Also called air conditioning valve. The electric valve is a high-end product in the automatic control valve. It can not only realize the switching function, but also realize the valve position adjustment function. The stroke of the electric actuator can be divided into two types: 90° angular stroke and straight stroke. Special requirements can also meet the full stroke of 180°, 270° and 360°. The angular stroke electric actuator is used in conjunction with the angular stroke valve to realize the internal rotation of the valve to control the on-off of the pipeline fluid; the straight stroke electric actuator is used with the straight stroke valve to realize the up and down action of the valve plate to control the pipeline fluid on-off.