CPVC shares most of the features and properties of PVC, but there are some differences. CPVC can withstand corrosive water at temperatures greater than PVC, making it a popular choice for water piping systems.
Mechanically, CPVC is substantially more capable of undergoing change in its form without breaking. This allows for greater flex and crush resistance.
This also makes it the best candidate for replacing metal pipe where corrosion on metal is more susceptible. It has good tensile strength, stands up against natural earth weather forces and is easily fabricated. It also has a temperature range up to 200 degree Fahrenheit.
Heat & Chemical Resistance
CPVC can withstand corrosive water at temperatures greater than PVC, typically 40°C to 50°C (104°F to 122°F) or higher, contributing to its popularity as a material for water piping systems in residential as well as commercial construction.
The principal mechanical difference between CPVC and PVC is that CPVC is significantly more ductile, allowing greater flexure and crush resistance. Additionally, the mechanical strength of CPVC makes it a viable candidate to replace many types of metal pipe in conditions where metal’s susceptibility to corrosion limits its use.
CPVC is rated HB. CPVC is similar to PVC in resistance to fire. It is typically very difficult to ignite and tends to self-extinguish when not in a directly applied flame. Trying to burn CPVC is not a good idea.