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Copper Fittings - Allowed in NFPA 13?

Question asked by jsworks on May 3, 2019
Latest reply on May 6, 2019 by jsworks

The A&E's project spec I have prohibits copper fittings for sprinkler piping. Yet that was what was used. The contractor cited compliance w/ NFPA 13. Can anyone cite chapter & verse of NFPA 13 where copper fittings are permitted? Please exclude underground piping. I know its permitted for underground conditions. My request is for overhead clg conditions.