Union,3/4 In,NPT,Black Malleable Iron 1.Banded,Beaded,Plain 2.1/ ... /Standard/light weight Union, 3/4 In, NPT, Black Malleable Iron Specification:Union, 3/4 In,Connection NPT threads, Material of Construction ... Deg F, Saturated Steam Pressure 150, Standards Class 150. Technical Parameter:ANSI: American StandardMaterials: ANSI/ASME/A197-79Dimensions: ANSI/ASME B16 ...