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 5960-00-594-0824
NSN 6150-00-081-9928
NSN 5855-01-600-6437
NSN 6685-00-581-9329
NSN 6145-01-499-9745
NSN 5920-01-343-9260
NSN 6220-00-403-9021
NSN 5996-00-525-1777
NSN 5945-01-231-8417
NSN 5999-01-197-6952
NSN 5998-01-556-3200
NSN 6145-00-455-2809