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Selecting Expansion Joints in CPI Applications

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Proco Products

Understanding the factors affecting the selection of expansion joints helps maximize their longevity and minimize process downtime. The following guidelines can help with selecting expansion joints

Although sometimes overlooked or treated like an afterthought in process design, expansion joints are critical elements in chemical process industries (CPI) operations for providing flexibility and stress relief to piping systems. Failures in expansion joints can result in leaks of process fluids, with implications for personnel safety, environmental protection and operational uptime. Selecting the correct type of expansion joint for the process conditions will maximize the longevity of the joint and reduce downtime for replacing it, while also maintaining the joint’s integrity. By considering a full set of process characteristics when selecting expansion joints, plants can maximize production and operational uptime while still maintaining safety and environmental stewardship. 

For the selection process, plant engineers should consider taking advantage of expansion-joint vendors, who can offer specialized expertise and on-the-ground experience to guide users to the optimal type of expansion joint for certain process conditions. Vendor companies serve as a valuable resource for arriving at the best expansion-joint choice.

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