The solenoid valve uses electric current to cause the electromagnetic attraction generated by the electromagnetic coil to guide the movement of the valve core, and the control mode is DO digital as a signal control. The driving device of the electric valve is a reversible electric motor. The valve control valve is driven by the motor for a certain period of time. The AI ​​analog signal control can be used to adjust the flow of the pipeline medium, and it can also be used in a specific pipeline environment. Use digital signal control instead. The differences between the two are also different. The solenoid valve has excellent anti-leakage performance, quick opening and closing, low power, and is suitable for use as a cut-off in some chemical pipelines such as corrosion and toxicity. Most of the electric valves are used for the adjustment of the pipeline flow. They are normally installed at the air outlet of the air supply and cooling ducts. They can also be used in liquid pipelines. They are widely used in pipelines such as canned pipes and sewage treatment pipes for the production of beverages. . Solenoid valves are often used for switching control of liquid and gas lines and are controlled by two DOs. The general flow coefficient is small, and the working pressure difference is small, which is used for the control of small pipes. Because its drive is through the electromagnetic coil, it is relatively easy to be damaged by voltage shock. The electric valve is suitable for the analog adjustment of the flow rate of the liquid in the liquid, gas and wind system, and is the AI ​​control. In the control of large valves and wind systems, electric valves can also be used for two-position switch control.

Cooper