CPVC vs UPVC: Understanding the Differences

Material Comparison | January 17th, 2021

PVC is a highly versatile material used in **piping, electrical casing, drug delivery tubing, and food packaging**. In this article, we’ll explore the key differences between **UPVC and CPVC** and why **CPVC is the superior choice** for **residential, commercial, and government projects**.

What is UPVC?

UPVC (Unplasticized Polyvinyl Chloride) is a rigid form of **PVC** that is widely used for **water supply, drainage, electrical conduits, and industrial piping**. Unlike traditional PVC, UPVC does not contain plasticizers, making it more durable and less flexible.

Applications of UPVC Pipes

• Potable Water Supply: Used in domestic and industrial plumbing (IS 4985, IS 12818, IS 12231).
• Drainage Systems: Suitable for soil waste drainage (IS 9721, IS 12592).
• Electrical Conduits: Commonly used for protecting wiring in buildings.
• Industrial Use: Ideal for chemical transportation.

Limitations of UPVC

• Not all UPVC grades are safe for potable water.
• Cannot withstand **hot water temperatures**.
• Some manufacturers exceed **filler limits**, making pipes brittle.
• Limited **UV stability**, making it prone to aging.

What is CPVC?

**CPVC (Chlorinated Polyvinyl Chloride)** is a modified version of PVC with increased **chlorine content (63-67%)**. This makes it a **more stable, heat-resistant, and durable polymer**. CPVC is lead-free and is globally approved for potable water use.

CPVC vs UPVC: Key Differences

Feature	UPVC	CPVC
Temperature Resistance	Cold Water Only	Hot & Cold Water
Potable Water Approval	Limited	Globally Approved
UV Stability	Low	High
Suitability for External Use	Limited	Yes

Why Choose CPVC?

• Suitable for **hot & cold water piping**.
• Has **global potable water certifications**.
• Higher **UV stability**, suitable for both **indoor & outdoor** applications.
• Stronger **chemical and impact resistance**.

Trusted CPVC Brands: FlowGuard® Plus by Lubrizol

**Lubrizol invented CPVC in 1959** and supplies CPVC compounds under the **FlowGuard® Plus** brand, ensuring **quality and durability**. It is manufactured in India by **Ashirvad Pipes Pvt Limited** and **Prince CPVC Pipes & Fittings Limited**.

Choose CPVC for a trouble-free plumbing system that lasts for years!