The control of valves can adopt various transmission methods, such as manual, electric, hydraulic, pneumatic, turbine, electromagnetic, electromagnetic hydraulic, electro-hydraulic, pneumatic, spur gear, bevel gear drive, etc. It can act according to predetermined requirements under the action of pressure, temperature or other forms of sensing signals, or simply open or close without relying on sensing signals. The valve relies on driving or automatic mechanisms to lift, slide, or slide the opening and closing parts Swinging or rotating motion, thereby changing the size of its flow channel area to achieve its control function.