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 5996-01-175-7881
NSN 5910-01-510-8743
NSN 5925-00-013-9423
NSN 6110-01-203-5994
NSN 7035-00-763-6180
NSN 6145-01-397-2709
NSN 5905-01-269-3249
NSN 5930-01-010-3283
NSN 5960-01-064-5650
NSN 7035-01-391-7470
NSN 6105-00-493-3316
NSN 5905-00-978-1010