The existing advanced pneumatic butterfly valve is a three eccentric metal hard seal pneumatic butterfly valve. The valve body and valve seat are integral components, and the sealing surface of the valve seat is welded with heat-resistant and corrosion-resistant alloy materials. This pneumatic butterfly valve is more resistant to high temperature than the general pneumatic butterfly valve.

Because the movement of butterfly valve plate is wiping, most butterfly valves can be used for media with suspended solid particles, and can also be used for powdery and granular media according to the strength of seals.