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2. Plumbing fixture - Wikipedia

   en.wikipedia.org/wiki/Plumbing_fixture

   The most common plumbing fixtures are: Bathtubs; Bidets; Channel drains; Drinking fountains; Showers; Sinks; Tap (connections for water hoses) . Tapware - an industry term for that sub-category of plumbing fixtures consisting of tap valves, also called water taps (British English) or faucets (American English), and their accessories, such as water spouts and shower heads.

3. Trap primer - Wikipedia

   en.wikipedia.org/wiki/Trap_primer

   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.

4. Trapdoor - Wikipedia

   en.wikipedia.org/wiki/Trapdoor

   A trapdoor or hatch is a sliding or hinged door that is flush with the surface of a floor, ceiling, or roof. [1] It is traditionally small in size. [ 2 ] It was invented to facilitate the hoisting of grain up through mills, however, its list of uses has grown over time. [ 3 ]

5. Trap (plumbing) - Wikipedia

   en.wikipedia.org/wiki/Trap_(plumbing)

   Essentially all plumbing fixtures including sinks, bathtubs, and showers must be equipped with either an internal or external trap. Toilets almost always have an internal trap. A bottle trap, which can be unscrewed for cleaning. Because it is a localized low-point in the plumbing, sink traps also tend to capture small and heavy objects (such as ...

6. Trapdoor (disambiguation) - Wikipedia

   en.wikipedia.org/wiki/Trapdoor_(disambiguation)

   A trapdoor is a door set into a floor or ceiling. Trapdoor or Trap Door may also refer to: Trap Door, a science fiction fanzine; The Trap Door, a British animated TV series The Trap Door, a computer game based on the animated series; Trapdoor (software), a piece of computer software used for network administration

7. Mantrap (access control) - Wikipedia

   en.wikipedia.org/wiki/Mantrap_(access_control)

   An intercom and/or video camera are often used to allow the guard to control the trap from a remote location. In an automatic mantrap, identification may be required for each door, sometimes even different measures for each door. For example, a key may open the first door, but a personal identification number entered on a number pad opens the ...