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Performance, Pressure, Temperature, and Chemistry of PTFE Lined Pipes

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  This part aims to give the engineer a foundational understanding of fluoropolymers. Few engineers, in our experience, are exposed to these materials enough in their working careers to comprehend the considerations that must be taken in equipment specification, design, installation, and operation. Metals standards will be specified, weld test procedures will be documented, and materials certification will be required in a typical lined equipment specification. However, the specification is frequently found inadequate when it comes to the fluoropolymer aspect, with only a fleeting mention of PTFE or Teflon being made at best. Performance: The lined pipework and fittings must have the highest performance level as the fundamental element of a fluoropolymer lined process. Plants may be multi-purposed, the equipment can be reused with certainty, and process safety is maximised. Other elements, such as pumps, valves, tanks, and columns, invariably have performance characteristics outsid