In NFPA 13 and NFPA 14, there are typical arrangements for fire department connections (FDCs) with a check valve installed on the same branch as the FDC. This will keep the FDC dry which will prevent it from freezing up if it is located in a climate where the temperature can drop below freezing.
I've seen lots of installations in warm climates where it never freezes and contractors just follow the typical arrangements shown in NFPA 13 and 14 but I don't think they should have to. It seems to me that it should be allowed to omit the check valve adjacent the FDC as there is no possibility of the FDC freezing and the FDC has built in check valves to stop water coming out of the hose connections.
Has anyone looked into this?