What is Corzan and CPVC?
Corzan is a trade name of Lubrizol Advanced Materials for their CPVC compound and applies to our imperial pipe, our metric pipe, and our metric fittings. In CPVC, the "C" part of the abbreviation stands for "chlorinated". The PVC compound is put through a chlorination process which changes some of it's properties. One of the main changes is that the melting temperature of the plastic is higher and so CPVC pipe and fittings can operate at a higher temperature than standard PVC.
How Do CPVC and PVC Differ?
The main difference that most people are interested in is the temperature range that CPVC can operate over. PVC has a maximum working temperature of 60 degrees Centigrade, but CPVC can be taken up to 90 degrees. There are also differences in chemical compatibility - full chemical compatibility charts are available in here.
Inch and Metric Ranges
Our CPVC pipe and fittings are available in two ranges. The first is an imperial range, that is manufactured in the USA by Spears Manufacturing, and the second is metric, which is European and manufactured by Durapipe. Both systems are manufactured to all the required standards and specifications.
CPVC Pipe Pressure Derating Table
Pressure Derating Multiples (2 mins)
The pressure rating of CPVC pipe reduces with increasing temperature. Multiply the pressure rating of the CPVC pipe by the ′De-Rating Multiple′ to get the actual pressure rating at that operating temperature. For example, a 15 bar pipe operating at 60°C will be 15 x 0.5 = 7.5bar.
∗Only recommended for non-continuous flow applications. Please contact us for further information.
Chemical Compatibility Chart
Ratings are given in terms of the suitability of PVCU pipe to carry a specific chemical. For some chemicals no reliable data is available and so no data is given.
Please note the following:
• The effect of any chemical on PVC pipe systems may be dependent on factors such as temperature, pressure, concentrations and abrasiveness. Materials should be tested under actual conditions to determine the suitability for a specific application.
• This information has been supplied to Plastic Pipe Shop Ltd by its suppliers and from other reputable sources. The information should only be used as a guide.
• The ratings for each chemical are based on a period of 48-hour exposure of the CPVC pipe.
• Plastic Pipe Shop Ltd does not guarantee (neither express or implied) that this information is accurate or complete. Further Plastic Pipe Shop Ltd does not by way of this information make any recommendation that any material is suitable for any purpose.