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Galvanized fittings for LP?

Question asked by john.notmyname.smith on Sep 15, 2020
Latest reply on Sep 17, 2020 by milt.werner

Can someone give a definitive answer as to whether a standard galvanized malleable iron sch40 pipe fitting is considered a "Zinc-aluminum alloy?"

 

NFPA 54 5.6.8.4  (5.5.7.5 in the 2021 edition) states that "Zinc-aluminum alloy fittings" are not legal to use in LP gas piping. Does that refer to standard galvanized fittings which are cast out of malleable iron (which IS a permitted material), or to fittings cast out of a zinz-aluminun alloy?

 

Can anyone shed light on this topic? If galvanized fittings are prohibited, does anyone know why they pose a fire hazard?

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