1. Small and lightweight, easy to disassemble and maintain, and can be installed at any.
2. Simple and compact structure, rapid opening and closing of 90°swing, small opening and closing torque.
3. Bidirectional pressure, to achieve complete sealing, gas test leakage is zero.
4. It can be used to cut off the medium and regulate the flow, and the flow characteristic tends to be straight, with good regulation performance.
5. No deposition in the pipeline, strong anti-scouring ability, adapt to the more severe working conditions.

Butterfly valve butterfly plate sealing center and valve stem rotary center coincidence, the valve relies on a certain amount of surplus in the valve seat and butterfly sealing surface caused by the sealing pressure, to ensure that the valve sealing effect of the sealing sub-seat, the valve seat is generally made of elastic materials such as rubber or polytetrafluoroethylene, and more suitable for lower pressure butterfly valve. Valve seat form with backrest valve seat, inlay valve seat, the whole vulcanized valve seat.