The Fluorine Lined Cock Valve (also known as Fluorine Lined Plug Valve) is a specialized corrosion-resistant industrial valve designed for harsh media control, combining the simple structure of cock valves with the extreme chemical resistance of fluoropolymer linings. Compliant with international standards (ANSI/ASME, ISO, GB, DIN), it features a metal valve body (WCB, stainless steel, cast iron) with full fluoroplastic lining (PTFE/PFA/FEP) on the inner surface, plug core, and sealing seat—ensuring complete isolation between corrosive media and metal components.