When the sealing ring of the product has been in position and overstocked, we should check whether there is any problem at the end of some pipelines. The outlet flange can help us solve the problem. For some electric butterfly valves with valve stem that are used repeatedly, we should check the valve regularly, so that we can check whether there is any fault in the product in a timely manner. If there is any fault, it can also be eliminated in a timely manner.

Pneumatic rubber lined butterfly valve. The connection method includes flange and clamp. The sealing lining includes NBR, EPDM, heat resistant EPDM, natural rubber, neoprene, fluororubber, and polytetrafluoroethylene. It can be selected more reasonably according to the chemical properties of the medium.