1, butterfly plate sealing ring for the hard and soft laminated metal sheet, with metal hard seal and elastic seal double advantages, no matter in the case of low temperature and high temperature, have excellent sealing performance.

2, the use of three-dimensional eccentric structure, almost no friction between the seat and the disc, with the sealing function of more closed more tightly.

3. The sealing surface of valve body adopts surfacing welding of stainless steel and cobalt-based cemented carbide, which is wear-resistant and has a long service life.

4, unique structure, flexible operation, labor saving, convenient, not affected by the ring pressure high, low, reliable sealing performance.