... closing, convenient operation and labor saving, the butterfly plate and the sealing ring, without sliding, sealing ... : triple eccentric flange butterfly valve, double eccentric flange butterfly valve, single eccentric flange butterfly valve.Feature:Size: DN50 ... 5211 Mounting PAD ConnectionOperation Type: Manual, worm gear, electric, pneumatic, hydraulicHot tags: Flange Eccentric Butterfly Valve, China ...