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Water enters at right, fills the trap, and continues left. Inverted siphoning occurs below the line "A". Examples of traps [further explanation needed] In plumbing, a trap is a U-shaped portion of pipe designed to trap liquid or gas to prevent unwanted flow; most notably sewer gases from entering buildings while allowing waste materials to pass ...
A trap primer (or trap seal primer) is a plumbing device or valve that adds water to traps.The water seals in traps are needed to prevent sewer gases from entering buildings, but because this water is exposed to the air, it is subject to evaporation over time in infrequently used floor drains, leading to the release of sewer gas into the environment.
Grease traps have been in use since the Victorian era; in the late 1800s, Nathaniel Whiting was granted the first patent. The quantity of fats, oils, greases, and solids (FOGS) that enter sewers is decreased by the traps. They consist of boxes within the drain run that flows between the sinks in a kitchen and the sewer system.
Cold traps (C in the figure) usually consist of two parts: The bottom is a large, thick round tube with ground-glass joints (B in the figure), and the second is a cap (A in the figure), also with ground-glass connections. The length of the tube is usually selected so that, when assembled, the total reached is about half the length of the tube.
A Buchan trap (alternative names: Bristol interceptor, [1] interceptor trap and disconnecting trap) is a device fitted in a domestic sewer pipe to prevent odours entering the pipe from the public sewer [2] and permeating the house, a common problem before individual plumbing fittings were separately trapped.
We’re all guilty of refilling our plastic water bottles—but the consequences can be seriously harmful to your health.