electric butterfly valve

The center of rotation of the butterfly plate (i.e. the center of the valve stem) is located on the centerline of the valve body and the sealing surface section of the butterfly plate. When the valve seat is closed with EPDM, the outer sealing surface of the butterfly plate presses the rubber valve seat, causing elastic deformation of the valve seat and forming elastic force as the sealing pressure to ensure the sealing of the butterfly valve. The sealing structure of the butterfly valve adopts EPDM rubber, which is characterized by the fact that the elasticity of the valve is still provided by rubber and utilizes the low friction coefficient, low wear and aging resistance of rubber, thereby improving the service life of the butterfly valve.
The sealing principle and structural characteristics of butterfly valves are the same as those of ordinary medium line butterfly valves. The thickness of the butterfly plate is the only resistance for the medium to flow through the valve body, so the pressure drop generated by this valve is very small, thus it has good flow control characteristics.