The fluorine-lined Y-type filter fluorine-lined valve is a lining process for all the places where the medium in the valve body can reach, and the lining material is generally made of fluorine plastics such as FEP (F46) and PCTFE (F3), which can be applied to various concentrations of sulfuric acid, hydrochloric acid, hydrofluoric acid, aqua regia and various organic acids.