A device designed to be connected to a drainage system to prevent sewer gas from backing up beyond a desired point by forming a water seal in the line. This is accomplished by its peculiar shape, which is usually in the form of the letter p and s. 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 pipes make up close to the shoulders to eliminate pockets and provide a smooth flow of pipe and/or pipe fitting contents. Excludes trap, drain, plumbing fixture; and trap, soil pipe.
Classification: Tubes,pipes, hoses, and fittings thereof of plastics, nesoi
NSN 6240-01-062-7101
NSN 6240-01-246-1896
NSN 5935-01-085-6599
NSN 5998-01-100-6490
NSN 5996-01-391-8050
NSN 6130-00-018-7140
NSN 5960-01-376-3880
NSN 5975-01-347-3577
NSN 6610-00-141-7000
NSN 4140-01-338-9080
NSN 6240-01-428-9410
NSN 5915-01-227-0102