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 6320-00-468-8421
NSN 5945-00-318-5934
NSN 5960-00-243-1086
NSN 5930-00-253-4369
NSN 6240-00-580-0666
NSN 6145-01-512-2903
NSN 5905-01-152-2580
NSN 5835-01-067-6619
NSN 5965-00-289-6280
NSN 5950-01-232-3401
NSN 5905-00-134-5792
NSN 6135-00-862-5736