The valve body and internal components feature a fully lined fluorine structure, effectively isolating corrosive media from the metal materials of the valve body. The inner cavity of the metal valve body undergoes serrated machining to bond the lining material with the metal, extending the service life and performance of the lining. The stem seal combines an RTFE bellows seal with V-type PTFE packing, eliminating external leakage of the medium from the stem. The unbalanced fully fluorine-lined control valve is specifically designed for highly corrosive media under low-pressure and normal-temperature conditions.