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 5965-00-419-9590
NSN 5960-01-399-4327
NSN 4140-01-379-7615
NSN 5950-00-333-7641
NSN 6145-01-209-9562
NSN 6610-00-960-5711
NSN 6110-01-274-8039
NSN 5950-00-365-5611
NSN 6220-00-334-7008
NSN 5945-00-644-7098
NSN 5920-01-507-5957
NSN 5996-01-068-4469