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 5835-01-483-7825
NSN 6145-01-604-8619
NSN 5998-01-069-3254
NSN 5925-01-555-4363
NSN 6130-00-727-3294
NSN 5935-01-119-2815
NSN 5915-00-229-1474
NSN 6320-01-330-4634
NSN 5985-01-253-0892
NSN 6135-00-990-1822
NSN 5895-01-322-1927
NSN 5999-00-948-1602