PVC or CPVC - That is the Question
The first difference between PVC and CPVC pipes that people notice is usually that extra “c,” which stands for “chlorinated” and affects the uses of CPVC piping. There is also a significant price difference. Even though both of these prices are more affordable than alternatives like steel or copper, the price of CPVC is much higher. There are many other differences between PVC and CPVC piping, like size, color, and limitations, that will determine the best choice for a project.
Differences in Chemical Makeup
The biggest difference between the two types of pipe is not visible from the outside at all, but exists on the molecular level. CPVC stands for Chlorinated Polyvinyl Chloride. It is this chlorination process that changes the chemical makeup and properties of the plastic. View our selection of CPVC piping here.
Differences in Size and Color
From the outside, PVC and CPVC appear to be very similar. They both are strong and rigid forms of pipe, and they can be found in the same pipe and fitting sizes. The only real visible difference may be in their color – PVC is generally white while CPVC comes in a cream color. View our supply of PVC piping here.
Differences in Operating Temperatures
If you’re wondering which material to use, there are two important factors that should help you decide. The first is temperature. PVC pipe can handle max operating temperatures of up to about 140 degrees Fahrenheit. CPVC on the other hand, is more resistant to high temperatures due to its chemical makeup and can handle operating temperatures of up to 200 degrees Fahrenheit. Why not use CPVC for everything then? Well, that brings us to the second factor – cost.
Differences in Cost
The addition of chlorine in the manufacturing process makes CVPC pipes more expensive. The exact price of PVC and CPVC, as well as the quality, depend on the specific manufacturer. While CPVC’s resistance to heat will always be higher than PVC’s, the material isn’t always safe up to 200 degrees Fahrenheit. Make sure to check the specifics on the pipe before installation.
CPVC is a more expensive product so it is usually the chosen material for hot water applications, while PVC is used for cold water applications like irrigation and drainage. So, if you’re stuck between PVC and CPVC on your next project, remember to take into account at least two important factors: temperature and cost.
Differences in Adhesives / Bonding Agents
Depending on the materials and particulars of a certain job or project, certain types of adhesives, like primers, cements, or bonding agents, may be necessary to connect pipes and fittings. These adhesives are made specifically for PVC or CPVC pipes, so they cannot be used interchangeably between types of piping. View adhesives here.
CPVC or PVC: Which Do I Choose for My Project or Job?
Making a decision between PVC and CPVC pipes depends on the specific needs for each project, which is why it’s so important to understand the capabilities of each material. Since they serve very similar functions, best option for a project can be determined by asking a few specific questions.
- Are the pipes going to be exposed to any kind of heat?
- How important is the material’s cost?
- What size pipe does your project require?
Based on the answers to those questions, a right decision can be made about which material is needed. If the pipes are going to be exposed to any kind of heat, it’s safer to use CPVC because it has a higher resistance to heat. Read our post to learn more about CPVC and PVC pipes uses in hot water applications.
There are many cases in which paying a higher price for CPVC doesn’t offer any additional benefits. For example, PVC is often recommended for cold water systems, vent systems, drainage systems, and irrigation systems. Since CPVC is more expensive and doesn’t offer anything additional, PVC would be the best choice.
Hopefully, we’ve helped you understand the differences between PVC and CPVC piping. If you have any additional questions or you’re still uncertain about which type of pipe to use, give us a call at (866) 777-7990 or use our contact form to ask your question. We’re happy to help!