Aqua-Dynamic 1-1/2" x 3-1/2" Galvanized Iron Nipple

1-1/2" x 3-1/2" Galvanized Iron Nipple. Malleable iron. Pipe threads comply with ANSI B1.20.1. Made to ANSI/ASTM A-197. Galvanized pipe and fittings may be used in most applications with the exception of underground lines. They work best with cold water lines, but are suitable for hot water lines as well. The main advantage of using galvanized fittings is their superior rust and corrosion resistance when compared to black and copper fittings.