What should I do if the handwheel of the PTFE lined valve does not rotate flexibly

      PTFE lined valve Also known as fluoroplastic lined corrosion-resistant valve, it is a type of valve and pressure vessel made by molding polytetrafluoroethylene resin onto the inner wall of steel or iron valve pressure parts or the outer surface of valve internals, utilizing its performance in resisting strong corrosive media.
With the increasingly severe working conditions in the industry, traditional metal valves can no longer adapt to high wear and strong corrosive working environments. People are urgently looking for a new type of material to replace metal valves, and the application of polytetrafluoroethylene in the valve industry can be regarded as a revolution in the valve industry. Polytetrafluoroethylene, commonly known as the "plastic king", was industrialized in 1949 and has a history of more than 50 years from an industrial application perspective. However, it has not been widely used in the valve industry for a long time. PTFE lined valves use lining technology for all areas that the medium inside the valve body can reach. The lining material is generally made of fluoroplastics such as FEP and PCTFE, which can be used for pipelines with various concentrations of sulfuric acid, hydrochloric acid, hydrofluoric acid, aqua regia, various organic acids, strong acids, strong oxidants, and other corrosive media. Regardless of the device, after a period of use, some symptoms will appear to varying degrees, and PTFE lined valves are no exception. If encountered PTFE lined valve If the handwheel does not rotate flexibly, the gland nut can be loosened appropriately. If it still does not rotate flexibly, it may be due to the gland being skewed and needs to be adjusted.

Common points between fluorine lined butterfly valve and PTFE lined butterfly valve