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 6685-00-045-5243
NSN 5945-00-678-2859
NSN 6150-00-114-2785
NSN 5990-01-318-3238
NSN 5835-01-363-4527
NSN 5855-00-832-7316
NSN 5925-01-348-4223
NSN 6105-00-108-1648
NSN 6685-01-255-4039
NSN 6685-01-054-4409
NSN 4140-00-824-8821
NSN 5999-00-760-3726