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 734 734 Y-Branch 45°
723 Reducing Tee
703 60° Short Turn Elbow
753 Coupling
701 90° Short Turn Elbow
754 Bath P-Trap
705 45° Short Turn Elbow
731 Y-Branch 90° Reducing Long Turn
736 45° Double Y-Branch
702 90° Long Turn Elbow
727 Sanitary Tees 90° Reducing Short Turn