Historical
ANSI/ASME B16.23-2002
Cast Copper Alloy Solder Joint Drainage Fittings – DWV
Establishes specifications designed for use in drain waste, and vent (DWV) systems. The Standard is allied with ASME B16.29 (Wrought Copper and Wrought Copper Alloy Solder Joint Drainage Fittings - DWV) and provides requirements for fitting ends suitable for soldering. The Standard also covers description, pitch (slope), abbreviations for end connections, sizes and method of designing openings for reducing fittings, marking, material, dimensions and tolerances.
American Society of Mechanical Engineers [asme]