ASME B16.23-2016 pdf download.Cast Copper Alloy Solder Joint Drainage Fittings: DWV. 2 GENERAL 2.1 Relevant Units ThLs Standard states values in both SI (Metric) and U.S. Customary units. These systems of units are to be regarded separately as standard. Within the text, the U.S. Customary units are shown in parentheses or in separate tables that appear in Mandatory Appendix 1....