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 6240-00-290-4185
NSN 5905-00-775-1559
NSN 6150-00-951-9827
NSN 5996-01-486-9030
NSN 5935-01-562-4513
NSN 6220-01-450-9542
NSN 6145-00-067-7436
NSN 5965-00-499-8229
NSN 6105-00-112-0967
NSN 6135-01-173-6306
NSN 5950-01-023-8842
NSN 5996-01-416-8215