Union,3/4 In,NPT,Black Malleable Iron 1.Banded,Beaded,Plain 2.1/8-6" 3.Connection:NPT thread 4.Heavy/Standard/ ... light weight Union, 3/4 In, NPT, Black Malleable Iron Specification:Union, 3/4 In,Connection NPT ... threads, Material of Construction Black Malleable Iron,WOG ...