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What is the difference between PVC and CPVC?

Chlorinated polyvinyl chloride (CPVC) is created by subjecting PVC resin to a post-chlorination reaction that results in additional chlorine atoms on the base molecule. The advantages of doing this are a higher heat distortion temperature and improved fire performance properties. Our CPVC pipe has a maximum service temperature of 200°F, while the PVC pipe has a maximum service temperature of 140°F. CPVC is often used for hot water and other similar service applications where the temperature exceeds the recommended temperature limits of regular PVC.

PVC and CPVC are similar but not the same. Chemical resistance, joining and fabricating techniques, and service applications must be considered when choosing the material you need.

Title: What is the difference between PVC and CPVC?
Description: A brief explanation on what makes them different.
Published: 11/6/2007
Last Edited: 1/3/2023
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