The pneumatic PVC butterfly valve is a lightweight control valve specially designed for pipeline systems conveying corrosive media. Adopting a combination of a PVC valve body and pneumatic actuation, it safely shuts off and regulates the flow of acidic, alkaline, salt solutions and neutral fluids. Featuring excellent corrosion resistance, low flow resistance and cost-effective performance, it is widely used in low-pressure piping systems in industries such as chemical engineering, water treatment, environmental protection and food processing.