As a component used to achieve pipeline system shut-off and flow control, the building butterfly valve has been widely applied in many fields such as petroleum, chemical industry, metallurgy, and hydropower. The disc of the building butterfly valve is installed along the diameter direction of the pipeline. In the cylindrical channel of the butterfly valve body, the disc-shaped disc rotates around the axis, with a rotation angle ranging from 0° to 90°. When rotated to 90°, the valve is fully open. The characteristics of the new high-life stainless steel butterfly valve and the problems encountered during the use of butterfly valves. Soft-sealed butterfly valves can be classified based on their connection methods into flanged soft-sealed butterfly valves, wafer-type soft-sealed butterfly valves, and welded soft-sealed butterfly valves.