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 6135-01-025-8109
NSN 5855-00-361-0167
NSN 6240-01-490-6922
NSN 5935-01-281-7348
NSN 5930-01-623-0577
NSN 4140-01-438-0310
NSN 5895-01-139-0353
NSN 6145-00-323-6021
NSN 5998-01-091-7349
NSN 5990-01-266-3938
NSN 6145-01-113-4148
NSN 6620-01-171-2505