CPVC is a material that maintains the excellent properties of PVC, but by adding chlorine, it can be used under harsh conditions that conventional PVC cannot handle. We will explain what characteristics CPVC has.

What is CPVC?

CPVC (chlorinated polyvinyl chloride resin) is a plastic produced by post-chlorination of PVC (polyvinyl chloride resin), which not only further improves the flame resistance of PVC, but also provides high chemical and heat resistance. It is therefore used in applications such as hot/cold water supply pipes and fittings, fire sprinkler pipes and fittings. SEKISUI manufactures and sells Durastream, a CPVC compound containing additives to CPVC.

Strengths of CPVC

CPVC has excellent properties, specifically heat resistance, chemical resistance and flame resistance.
In terms of heat resistance, the Vicat Softening Temperature is 10 – 40°C higher than that of conventional PVC. It can be used in applications where it is regularly exposed to high temperatures, where general PVC cannot be used due to softening. Suitable for applications such as hot/cold water supply pipes and fittings.
In terms of chemical resistance, it has excellent resistance to strong acidic and alkaline conditions and retains its properties even at high temperatures.
In terms of flame resistance, it is self-extinguishing and produces little smoke when exposed to flame, making it suitable for fire sprinkler pipes and fittings.
In addition, it has excellent bending resistance, flexural modulus and tensile strength, and can be used in environments where metals are prone to corrosion. It also has better insulation properties than copper pipes.