Difference in PVC & CPVC Pipe for Hot Water

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Many varieties of piping exist.
Many varieties of piping exist. (Image: coude en PVC de 45° image by Marie-Thérèse GUIHAL from Fotolia.com)

Copper piping was the original piping used for traditional hot and cold water plumbing purposes, but with the advent of plastic, new options arose. Two types of piping are available for plumbing uses, called polyvinyl chloride (PVC) and chlorinated polyvinyl chloride (CPVC).

Identification

PVC is a widely used polymer blended tubing. On the other hand, CPVC is a polymer tubing altered through a chlorination procedure.

Considerations

Hot water applications are not recommended for PVC piping. CPVC offers more strength against the thermal heat and pressure from hot water piping due to its durability through the chlorination procedure. Water suitable for drinking flows well down the smooth interior of the CPVC piping, allowing pressure to stay stable throughout the water piping delivery.

Significance

CPVC is normally used strictly with water piping applications, whether hot or cold, as well as for fluids within an industrial setting. PVC can be used for other applications beside plumbing, including the soles of shoes and furniture.

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