Wafer type soft sealing Butterfly Valve is simple in structure, small Valume, light in weight. You only need to rotate 90 degree to open and close the valve.Also the valve has good flow control characteristics.Flange butterfly valve in the fully open position,hte butterfly plate thickness is medium flows small,it has good flow control characteristics. Support and metal elastic sealing seal two kinds of seal type. Elastic sealing valve,sealing ring can be embedded in the body or attached to the butterfly plate peripheral.