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A fitting having one or two branches whose internal and/or external portions form a sweep or radius to the run with the connections fixed at 90 degrees (1.5705 radians) to the run. It is provided with an internal shoulder(s) at the end(s) of its internal threaded or unthreaded portion, whose inside diameter conforms to standard weight wrought iron pipe or copper drainage, waste and vent (DWV) tube. When connected, the mating pipe and/or pipe fitting is close to the shoulder to eliminate a pocket and to provide a smooth flow ofthe pipe and/or pipe fitting contents. It may have side inlet(s).
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SURFACE TREATMENT DOCUMENT AND CLASSIFICATION
ASTM A153,CL A ASSN STD SINGLE TREATMEN