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 6650-01-188-4516
NSN 6105-01-344-7302
NSN 5925-01-226-4961
NSN 5855-01-480-1396
NSN 6105-01-634-0322
NSN 5835-01-485-1408
NSN 5895-01-343-7052
NSN 5950-01-607-7553
NSN 5985-00-467-1838
NSN 5935-01-260-3847
NSN 2925-01-327-3069
NSN 5925-01-240-4048