In the automatic control system, the electric ball valve can realize the proportional adjustment or switch control of the fluid medium in the process pipeline through PLC (or other microcontrollers), which can quickly adjust the flow, pressure, temperature, liquid level and other parameters of the fluid medium. Automated control greatly improves the integration and intelligence of the system, and enables precise control of complex large-scale processes that are not convenient for manual participation. It is widely used in food, environmental protection, medical, light industry, petroleum, paper, chemical, and electric power industries. Professional equipment and other industrial automatic control systems.