The Fluorine-Lined Gate Valve is a heavy-duty corrosion-resistant industrial valve, integrating the full-port flow advantage of gate valves with the extreme chemical inertness 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, gate plate, and valve seat—ensuring complete isolation between corrosive media and metal components. Designed for on-off control in harsh corrosion environments, it is widely used in chemical, pharmaceutical, and petrochemical industries.