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ASTM F3497 PDF
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Standard Test Method for Evaluating the Oxidative Resistance of Polypropylene (PP) Piping Systems to Hot Chlorinated Water
| Published by | Publication Date | Number of Pages |
| ASTM | 12/15/2021 | 8 |
ASTM F3497 – Standard Test Method for Evaluating the Oxidative Resistance of Polypropylene (PP) PipingSystems to Hot Chlorinated Water
1.1”This test method describes the general requirements for evaluating the long-term, chlorinated water, oxidative resistance of polypropylene (PP) piping produced in accordance with Specification F2389 used in hot-and-cold water distribution systems by exposure to hot, chlorinated water. This test method outlines the requirements of a pressurized flow-through test system, typical test pressures, test-fluid characteristics, failure type, and data analysis.
Note 1:”Other known disinfecting systems (chlorine dioxide, ozone, and chloramines) are also used for protection of potable water. Free-chlorine is the most common disinfectant in use today. A PPI research project examined the relative aggressiveness of free chlorine and chloramines on PEX pipes, both at the same 4.0 ppm concentration and the same test temperatures. The results of the testing showed pipe failure times approximately 40”’% longer when tested with chloramines compared to testing with free chlorine, at the tested conditions. Based on these results, the data suggests that chloramines are less aggressive than free chlorine to PEX pipes. This note is provided for information regarding testing different disinfecting systems on PEX tubing using Test Method F2023. The PPI research project did not include testing of polypropylene piping.
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