How large gas pipe is equipped for pneumatic double flange powder butterfly valve? Fluorine lined pneumatic ball valve: Q41F46, Q641F46, Q941F46;
Sealing principle of butterfly valve When processing the valve plate, ensure that its sealing face has a suitable surface roughness value, and the synthetic rubber valve seat forms a suitable surface roughness value when molding. When the valve is closed, through the rotation of the valve plate, the outer sealing surface of the valve plate squeezes the synthetic rubber valve seat, making the synthetic rubber valve seat produce elastic deformation and forming elastic force as the sealing pressure to ensure the sealing of the valve.
