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Are copper pipe/tubes acceptable as fill and vent pipes?

April 26, 2017acceptable Copper pipe pipes tubes vent

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Are copper pipe/tubes acceptable as fill and vent pipes?

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Section 8.3.1.2 of CSA-B139-00 states that fill or vent pipes must be of steel or galvanized construction. This requirement became effective on October 1, 2001. Installations prior to this date are considered approved provided the installation complied with the code at the time of installation. This includes, but is not limited to, sizing and connections.