Now in our life, the development of industry has become the most concerned place in our entire human society, because now everyone knows that industrial development is actually a very important supporting force for our economy. If our industrial development is not so qualified, it is likely that our economic development will slow down. Therefore, in terms of industrial development, both our country and ordinary people have high hopes for it. So now more and more people working in industry hope to use higher efficiency to make their industrial development faster. In this case, a machine like pneumatic diaphragm pump is widely used in industrial development.

Classified by working pressure
(1) Vacuum butterfly valve. Butterfly valve with working pressure lower than standard atmospheric pressure.
(2) Low pressure butterfly valve. Butterfly valve with nominal pressure PN<1.6MPa.
(3) Medium pressure butterfly valve. Butterfly valve with nominal pressure PN of 2.5-6.4MPa.
(4) High pressure butterfly valve. The nominal pressure PN is 10. 0 -- 80.0MPa butterfly valve.
(5) Ultra high pressure butterfly valve. Butterfly valve with nominal pressure PN>100MPa.