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A pneumatic PTFE lined plug valve is a type of valve that uses compressed air or gas pressure to regulate the opening and closing of a plug mechanism, which is coated with PTFE (polytetrafluoroethylene) material. The PTFE lining offers exceptional resistance to corrosion and chemical attack, making it suitable for industries such as chemical processing, pharmaceuticals, and food and beverage.

The plug valve’s design usually incorporates a cylindrical or tapered plug that fits into a corresponding seat. When the valve is closed, the plug obstructs the flow path, sealing off the fluid or gas. Upon actuation by the pneumatic system, the plug rotates to open, permitting the fluid or gas to pass through.

The PTFE lining within the plug and valve body helps minimize contact between the process fluid and the internal components, thus reducing the risk of corrosion and contamination. This lining also creates a smooth, non-stick surface, ensuring a tight seal and reducing the operating torque required for valve actuation.

Pneumatic PTFE lined plug valves find common use in applications where control over highly corrosive or aggressive media is necessary. They are favored for their reliability, durability, and resistance to chemical attack. These valves are typically offered in various sizes, pressure ratings, and end connections to accommodate different piping systems and process requirements.

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