Turbine seal butterfly clip-on use of sophisticated J-shaped elastic ring and three eccentric multi-level metal seal structure, is widely used in medium temperature metallurgy, electric power, petrochemical, as well as drainage and municipal construction ≤425 ℃, etc. industrial pipes, for regulating the flow and load off fluid use. Features 1, D371H turbo clip-seal butterfly valve with three eccentric seal structure, seat and disc almost no wear, with the view of the tight sealing function. 2, ring made of stainless steel production, with a metal seal and elastic sealing of the dual advantages, both in the case of low and high temperatures, all with excellent sealing performance, corrosion resistance and long service life. 3, the disc sealing surface using cobalt-based alloy welding, sealing surface wear resistance and long service life. 4, large-sized disc using lattice structure, high strength, flow area, flow resistance. 5, D371H turbine seal butterfly clip-on two-way sealing function, the installation of unrestricted flow of media, are not subject to influence spatial location can be installed in any direction. 6, the drive can be multi-position (rotated 90 ° or 180 °) to install, easy to use.