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 6145-01-216-2938
NSN 6240-00-170-5302
NSN 6105-01-571-7371
NSN 7035-01-135-0050
NSN 6220-00-829-8064
NSN 5935-00-211-5332
NSN 6220-01-401-5337
NSN 6110-00-964-3514
NSN 5999-00-548-2060
NSN 6650-01-294-1067
NSN 5925-00-135-7738
NSN 6650-01-472-0143