Everflow Supplies NPBR1260 6" Long Brass Nipple Pipe Fitting with 1/2" Nominal Diameter and NPT Ends Overflow part number NPBR1260 Brass 6 inch long nipple 1/2 inch Nominal pipe diameter with male threaded NPT ends Conforms to ASTM B687 ANSI ASME B1.20.1 Meets or exceeds all applicable ANSI standards