Describes 3-inch to 24-inch ductile iron fittings to be used with ductile-iron pipe for gas. All 16-, 20- and 24-inch ductile iron fittings are shown for rated working pressures of 150 psi. Ductile iron fittings, 12-inches and smaller, are described for rated working pressures of 250 psi. Ductile iron drip pot fittings are illustrated in sizes 4-inch to 12-inch for rated working pressures of 50 psi. Fittings with mechanical joints are dimensioned.