Polycrystalline silicon metal -seated ball valve

The utility model provides a supporting pin is installed to the inner wall, is equipped with a compression spring outside the supporting pin that polycrystalline silicon metal -seated ball valve, thevalve gap is all installed to the left and right sides of valve body, and the inner wall of valve body has cup jointed the spheroid, and the baffle is all installed to the spheroidal left and right sides, and the baffle links to each other with the valve gap cooperation, and the backup pad is installed with the juncture of valve body in spheroidal bottom, the backup pad. This polycrystalline silicon metal -seated ball valve, by the valve gap, a valve body, the connecting plate, curb plate and valve handle are constituteed, valve body system has metallic sealing section sealed with the cooperation of spheroid metal covering, be equipped with a compression spring between valve gap and the baffle, U type gasket and rubber pad, make the baffle can be in the valve body axial displacement, prevent that polycrystalline s