What is the power of Tianjin electric air butterfly valve? Generally, the base of the valve is an inclined sealing surface, so all materials will accumulate on the sealing surface, which is difficult to discharge quickly in a short time. The above situation will not occur for pneumatic butterfly valves. Even if there is very little material on the sealing surface, the residual materials can be completely scraped off when the valve automatically closes.
、 （3） Non metallic material valves are classified according to valve body materials, such as ceramic valves, glass fiber reinforced plastic valves, and plastic valves.
