Everflow Supplies NPBR1500 Close Brass Nipple Pipe Fitting with 1-1/2" Nominal Diameter and NPT Ends Overflow part number NPBR1500 Brass 1-3/4" long nipple and no space between threaded ends 1-1/2" Nominal pipe diameter with male threaded NPT ends Conforms to ASTM B687 ANSI ASME B1.20.1 Meets or exceeds all applicable ANSI standards