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Soft seal butterfly valve is a kind of butterfly valve that adopts flexible sealing material (such as PTFE, rubber, etc.) as the sealing surface, which is widely used in the medium and low pressure working condition environment of water supply and drainage, HVAC, chemical industry, electric power, food and light industry, etc. The valve is suitable for water, air, steam, oil and many weak corrosive media with good sealing performance and corrosion resistance. The valve is suitable for water, air, steam, oil and a variety of weak corrosive media, with good sealing performance and corrosion resistance. The soft seal butterfly valve has simple structure, light weight, rapid opening and closing, easy operation, small flow resistance, and is suitable for large-diameter piping systems. Product advantages include reliable sealing, abrasion resistance, long service life, easy maintenance, as well as lower cost and easy installation. The valve supports manual, pneumatic, electric and other driving methods to meet different automation control needs. Soft seal butterfly valve can not only realize the rapid cut-off and adjustment of the medium, but also effectively prevent leakage and ensure the safe and stable operation of the pipeline system, it is the ideal valve choice for industrial and municipal pipeline network with economic and practical use and excellent performance.