HDG100-F series fluorine lined single seat valve adopts top guide structure. The valve contact with the medium using a high-pressure injection molding process, lined with corrosion-resistant and aging-resistant polyperfluoroethylene propylene (referred to as F46) or a copolymer of tetrafluoroethylene and perfluoro (n-) propyl vinyl ether (referred to as PFA). Generally, polytetrafluoroethylene (PTFE) bellows are used for sealing, which has the unique advantages of resistance to strong corrosive medium such as acid (hydrochloric acid, sulfuric acid, hydrofluoric acid, etc.), alkali, and reliable sealing, widely used in the control systems of strong acid, strong alkali and other special medium in petroleum, chemical, metallurgy, medicine, light textile and other industries.