The pneumatic/electric fluorine-lined control valve is an execution unit in the automated instrumentation system, which is installed on the media conveying pipeline and used in conjunction with other instruments to control flow and other parameters. Because the valve body cavity and valve components in contact with the liquid are lined with fluoroplastics (PFA, FEP), the stem seal adopts a double sealing structure of bellows and packing, which makes it more reliable for installation. It is suitable for the control of highly toxic, volatile and permeable media. It is widely used in automation devices in petrochemical, electric power, metallurgy, papermaking and other industrial sectors.