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 7035-00-104-7613
NSN 4140-01-395-9149
NSN 6685-01-045-3558
NSN 6650-00-469-2218
NSN 6220-01-076-5057
NSN 5935-01-169-6011
NSN 4140-01-463-2529
NSN 6105-01-454-2381
NSN 6220-01-023-3179
NSN 5915-01-216-7587
NSN 5950-01-476-1444
NSN 5935-01-644-9749