Y32.2.3 has been developed for use on drawings to help architects, engineers & contractors by the use of symbols presented in this standard. It also has a standard method of indication for pipe fittings, valves piping & allied items on their plans.
ASME Y32.2.3-1949(R1999) history
0000 ASME Y32.2.3-1949(R1999)
1949ASME Y32.2.3-1949 Graphic Symbols For Pipe Fittings, Valves And Piping (Y32.2.3 - 1949)