The F9-19 series anti-corrosion fan is mainly used for transporting corrosive gases. The flow components of the fan are mainly made of corresponding materials or anti-corrosion measures according to different corrosive media. In order to prevent harmful gas leakage, advanced sealing structures are adopted. Carbon ring floating seals, negative pressure seals, mechanical seals, gas seals, etc. ensure zero leakage of the fan. The F8-18 and F9-19 series anti-corrosion fans belong to high-pressure anti-corrosion fans, and various auxiliary facilities such as flushing and drainage devices can be added according to user requirements.