In addition, in fact, in the design of electric ball valve, because of the combination of its V-shaped ball valve design and hard alloy, it can form a very favorable shear effect with the metal valve seat below, and can cooperate well with media containing fiber or some small particles. According to the different ball valves, electric ball valves can be divided into electric flange ball valves, electric wafer ball valves, electric welding ball valves, electric screw thread ball valves and various types. According to the different sealing forms of the ball valve, it can also be divided into soft sealed electric ball valve and hard sealed electric ball valve.

Pneumatic butterfly valve is composed of pneumatic actuator and butterfly valve. The pneumatic butterfly valve uses a round butterfly plate rolling with the valve to open and close, so as to complete the opening action. The pneumatic valve is mainly used as a block valve. It can also be planned to have the function of conditioning or section valve and conditioning. At present, butterfly valves are increasingly used in low-pressure large and medium-sized pipelines.