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 6645-01-239-2348
NSN 5895-01-289-4115
NSN 4140-00-419-8280
NSN 7035-00-497-8784
NSN 5835-01-162-3042
NSN 5996-01-386-7421
NSN 5975-01-512-1419
NSN 6135-01-511-1975
NSN 5905-01-114-8891
NSN 6150-01-423-8870
NSN 6240-00-232-7065
NSN 5998-01-607-6721