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2. Plumbing fixture - Wikipedia

   en.wikipedia.org/wiki/Plumbing_fixture

   The visible water surface in a toilet is the top of the trap's water seal. Each fixture drain, with exceptions, must be vented so that negative air pressure in the drain cannot siphon the trap dry, to prevent positive air pressure in the sewer from forcing gases past the water seal, and to prevent explosive sewer gas buildup.

3. Trap (plumbing) - Wikipedia

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

   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 through. In oil refineries, traps are used to prevent hydrocarbons and other dangerous gases and chemical fumes from escaping through drains.

4. Plumber - Wikipedia

   en.wikipedia.org/wiki/Plumber

   Installing, repairing and maintaining domestic, commercial, and industrial plumbing fixtures and systems; Locating and marking positions for pipe connections, passage holes, and fixtures in walls and floors; Measuring, cutting, bending, and threading pipes using hand and power tools or machines

5. Buchan trap - Wikipedia

   en.wikipedia.org/wiki/Buchan_trap

   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.

6. Air gap (plumbing) - Wikipedia

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

   Water cannot flow from the sink to the tap in normal circumstances, even if the water supply loses pressure. An air gap, as related to the plumbing trade, is the unobstructed vertical space between the water outlet and the flood level of a fixture. [1]

7. Trump win has economists concerned US economy will fail to ...

   www.aol.com/finance/trump-win-economists...

   Trump and his proposed policies have been viewed as potentially more inflationary due to the president-elect's campaign promises of high tariffs on imported goods, tax cuts for corporations, and ...