Understanding The Differences Between Pvc and Cpvc Pipes and Fittings

Among the most common thermoplastics used for water supply and management systems, polyvinyl chloride and its modification, chlorinated polyvinyl chloride, PVC and CPVC respectively are among the most popular choices around the world. Both pipe materials offer a whole range of benefits in terms if usage, especially higher corrosion resistance, ease of installation, durability and others. However, even though these pipe materials are from the same category, there are significant differences between them. Let us understand the differences between CPVC and PVC:
1. Differences in chemical composition: The most obvious difference between PVC and CPVC pipes and fittings is that of their chemical composition. CPVC is a modification of PVC which is manufactured by the process of chlorination, which transforms the chemical composition and molecular structure of CPVC, thereby affecting its physical properties as well.

2. Differences in physical appearance: While it may not be obvious to the layman, CPVC and PVC are also different in physical appearance. PVC and CPVC pipe fittings and pipes often look similar on the outside and hence they are differentiated by the colour of the pipes. PVC pipes are traditionally available in white while CPVC is available in an off white colour.

3. Difference in temperature resistance: Another important difference between PVC and CPVC comes in terms of the operational temperature that they can withstand. PVC pipes are able to withstand a functional temperature of about 60 degree Celsius while the best CPVC pipe for hot water has a temperature resistance of about 93 degree Celsius over the long term, which also makes it suitable for installations in hot water connections across domestic, commercial, and industrial applications.

4. Differences in joining methods and materials: While both PVC and CPVC pipes and fittings are easy to install, they are both installed using different solvents and cements. For each of the materials, the primers, solvents and cements used for installation are different and cannot be used interchangeably. Similarly, it is advisable to not use the pipes and fittings of CPVC and PVC interchangeably to ensure leakproof connections.

For the best quality PVC and CPVC pipes and fittings, explore the comprehensive range of solutions from Wavin, one of the leading global manufacturers of sustainable systems for water supply and management around the world.

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