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The Plastics Pipe Institute, Inc., (PPI) has announced the publication of a technical document related to the proper integration of copper tubing and components with Random Copolymerized Polypropylene -PP-R - piping materials for plumbing applications.
PPI TN-57 "Proper Integration of Copper Tubing and Components with PP-R Piping Materials for Plumbing Applications" describes how improper or excessive flow rates within mixed-material plumbing systems that contain both copper materials (e.g. tubing, fittings, valves) combined with PP-R piping materials can result in premature failure of both the copper components and the PP-R materials, potentially resulting in plumbing system leaks
TN-57 explains the reasons for this potential concern and how plumbing designers can avoid issues that cause this kind of failure.
TN-57 can be accessed directly online and more information can be found PPI's website.
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