Floating PFA/PTFE Lined Ball Valve

ALIS Valves offers Floating PFA/PTFE Lined Ball Valves for industrial applications requiring reliable flow isolation, corrosion resistance and dependable sealing performance when handling aggressive chemical media. These valves feature a floating ball design in which the ball is not fixed by a trunnion and can move slightly under line pressure to press against the downstream seat, helping create a tight seal within the valve’s rated operating limits. The internal PFA (Perfluoroalkoxy Alkane) or PTFE (Polytetrafluoroethylene) lining provides a chemically resistant barrier between the process media and the valve body, helping protect selected components from corrosive attack. The ball rotates to align its bore with the pipeline for flow or turns to block the passage for shut-off. Depending on the application, the valve can be configured with suitable seat materials, stem seals and end connections to meet the required pressure, temperature and chemical compatibility requirements.

Floating PFA/PTFE Lined Ball Valves are used in chemical processing plants, pharmaceutical facilities, acid and alkali handling systems, specialty chemical production and water treatment installations. They can be specified for compatible acids, alkalis and chemical solutions within the operating limits of the selected lining and valve construction. Important selection factors include valve size, operating pressure, temperature range, chemical concentration, process media compatibility, lining material, seat design, connection type and required leakage performance. Floating ball designs are generally selected according to valve size and pressure conditions because line pressure can increase the load on the downstream seat as operating pressure rises. PFA and PTFE have different mechanical and temperature performance characteristics, so the appropriate lining should be selected for the actual service conditions. Choosing the correct valve configuration helps support corrosion resistance, dependable shut-off and reliable performance in demanding chemical applications.