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 6130-01-248-3696
NSN 6220-01-589-2855
NSN 5975-00-995-9110
NSN 5835-00-941-4959
NSN 5915-01-318-8110
NSN 5960-01-056-4982
NSN 5945-01-143-6640
NSN 6610-01-425-1523
NSN 5965-01-222-1420
NSN 5925-01-379-2346
NSN 5996-00-826-3198
NSN 5895-01-289-3044