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.
Thanks,
JKSJIM
Refer to Section 7.4 in the current edition of NFPA 13. Specifically Table 7.4.1. Of course, if your jurisdiction uses an earlier edition, you will need to find the corresponding section in that edition.
I have an old 2010 edition of NFPA 13. It has the same copper fitting's description in Table 6.4.1. The exception is that in the 2010 edition, copper fittings are listed as a sub-category of Malleable Iron. That is what confused me. As viewed in 'Free Access', the 2019 edition has copper is listed in its own category. That confirmed that a copper fitting could be used, Thanks!
NFPA 13 has allowed copper pipe and fittings for as long as I've been using the standard. You just mentioned fittings, I hope the contractor is using copper pipe also, otherwise there could be issues with dissimilar metal junctions causing rapid corrosion.
Thanks, Mr. Oregan,
Copper/iron interface reminder was appreciated. Contractor did use a "de-electrify" fitting (plastic covering) in connecting copper pipe to iron pipe.
Refer to Section 7.4 in the current edition of NFPA 13. Specifically Table 7.4.1. Of course, if your jurisdiction uses an earlier edition, you will need to find the corresponding section in that edition.