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 754 754 Bath P-Trap
752 P-Trap
718 90° Street Elbow
722 Tee
723 Reducing Tee
726 Sanitary Tees 90° Short Turn
706 45° Long Turn Elbow
736 45° Double Y-Branch
719 45° Street Elbow
735 Y-Branch 45° Reducing
708 11 1/4° Elbow