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 4140-00-421-4555
NSN 6650-00-671-5106
NSN 5905-01-443-4791
NSN 5910-01-329-6262
NSN 5990-00-226-1152
NSN 5910-01-174-2453
NSN 5915-01-527-7812
NSN 5915-00-779-8307
NSN 6610-00-241-2316
NSN 5945-01-531-7745
NSN 5935-00-922-3552
NSN 5915-00-962-8494