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What is the difference between PVC and CPVC?

April 26, 2017CPVC difference PVC

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What is the difference between PVC and CPVC?

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Although PVC and CPVC are similar in terms of their chemical resistance, CPVC offers a superior temperature rating as a result of its higher chlorine content. CPVC is essentially post chlorinated PVC. While the level of chlorine in most PVC is 56-57%, that level is increased to as much as 74% in CPVC, with most commercial CPVC resins containing 63-69% chlorine. As a result, CPVC can perform reliably up to 200°F, compared to PVC with a maximum operating temperature of 140°F.