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 7035-01-633-9537
NSN 5935-00-487-9672
NSN 5990-00-069-7195
NSN 6610-01-409-1781
NSN 6135-01-265-1384
NSN 6150-00-179-2991
NSN 6105-01-105-9077
NSN 5930-01-532-0386
NSN 5985-01-143-7314
NSN 6135-01-442-4581
NSN 5905-01-003-7302
NSN 6685-01-374-5817