ZSHWE series triple eccentric butterfly valve plate and seal ring adopt unique triple eccentric structure, featuring compact structure, good cutting performance, long service life, and both functions of adjustment and cut-off; due to adopting three eccentric structure design, it is turned on and off. When the valve plate and the seal ring can quickly detach (no friction design), effectively prevent the seal ring from wearing; the seat and the seal ring adopt replaceable structure design to facilitate maintenance and replacement; low torque, can truly achieve two-way zero leakage, flow resistance Small, large rated flow coefficient, widely used in metallurgy, petroleum, chemical industry, electric power, natural gas and other fields to cut off or regulate flow control of pipeline medium.