Anvil drainage fittings have sufficient sweep to allow free unobstructed flow. They are made with a shoulder of the same diameter as the inside of the pipe, in accordance with ASME B16.12, Type 1. Thus, continuous passage is created when the pipe is screwed to the shoulder, leaving no place for solid matter to collect and clog in the pipe.
FIG 731 731 Y-Branch 90° Reducing Long Turn
735 Y-Branch 45° Reducing
707 22 1/2° Elbow
708 11 1/4° Elbow
718 90° Street Elbow
706 45° Long Turn Elbow
701 90° Short Turn Elbow
752 P-Trap
736 45° Double Y-Branch
703 60° Short Turn Elbow
730 Y-Branch 90° Long Turn