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After a lengthy testing process, Lubrizol’s CPVC’s FlowGuard Gold and Corzan piping systems are now listed by the International Code Council-Evaluation Service for use in return air plenums.
The listing confirms that water-filled (water distribution) and empty (condensate) FlowGuard gold pipe and fittings (1/2” to 2”), and water-filled Corzan pipe and fittings (1/2” to 6”) meet the 25/50 flame and smoke requirements for materials installed in return air plenums defined in the International Mechanical Code and the Uniform Mechanical Code.