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 4140-00-289-9263
NSN 6645-01-381-6084
NSN 5915-01-275-1893
NSN 5996-01-434-0922
NSN 5910-01-437-3535
NSN 6110-00-890-0777
NSN 6240-01-229-1749
NSN 6240-01-311-8058
NSN 6150-00-803-2853
NSN 6320-01-443-4972
NSN 6145-01-200-7936
NSN 6105-01-038-0588