This first issue of Subject 213C, Outline of Investigation for Grooved and Plain End Fittings, covers the construction and performance of pipe fittings intended to be joined by couplings complying with the requirements of , Rubber Gasketed Fittings for Fire-Protection Service for use water-based fire suppression systems when installed as specified in the following Standards:
Standard for Low-, Medium-, and High-Expansion Foam, NFPA 11;
Standard for the Installation of Sprinkler Systems, NFPA 13;
Standard for the Installation of Sprinkler Systems in One- and Two-Family Dwellings and Manufactured Homes, NFPA 13D;
Standard for the Installation of Sprinkler Systems in Residential Occupancies Up to and Including Four Stories in Height, NFPA 13R;
Standard for Water Spray Fixed Systems for Fire Protection, NFPA 15;
Standard for the Installation of Foam-Water Sprinkler and Foam-Water Spray Systems, NFPA 16; and
Standard for the Installation of Standpipe and Hose Systems, NFPA 14