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 6145-01-537-0952
NSN 5960-01-531-9108
NSN 5925-01-146-9641
NSN 6620-01-606-8964
NSN 5998-01-081-3597
NSN 5925-00-160-4747
NSN 6130-00-578-0869
NSN 5895-00-278-8092
NSN 5998-01-112-6625
NSN 6620-01-327-4111
NSN 2925-01-354-1752
NSN 5905-00-594-8102