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  2. Drain-waste-vent system - Wikipedia

    en.wikipedia.org/wiki/Drain-waste-vent_system

    A drain-waste-vent system (or DWV) is the combination of pipes and plumbing fittings that captures sewage and greywater within a structure and routes it toward a water treatment system. It includes venting to the exterior environment to prevent a vacuum from forming and impeding fixtures such as sinks, showers, and toilets from draining freely ...

  3. Should you leave water dripping during a deep freeze? - AOL

    www.aol.com/leave-water-dripping-during-deep...

    An arctic front moving in will drop temperatures across parts of the U.S. to dangerously low numbers over the next few days.

  4. Water hammer - Wikipedia

    en.wikipedia.org/wiki/Water_hammer

    Hydraulic shock ( colloquial: water hammer; fluid hammer) is a pressure surge or wave caused when a fluid in motion is forced to stop or change direction suddenly; a momentum change. It is usually observed in a liquid but gases can also be affected. This phenomenon commonly occurs when a valve closes suddenly at an end of a pipeline system and ...

  5. Backflow - Wikipedia

    en.wikipedia.org/wiki/Backflow

    Backflow is a term in plumbing for an unwanted flow of water in the reverse direction. [1] It can be a serious health risk for the contamination of potable water supplies with foul water. In the most obvious case, a toilet flush cistern and its water supply must be isolated from the toilet bowl. For this reason, building codes mandate a series ...

  6. Hydronics - Wikipedia

    en.wikipedia.org/wiki/Hydronics

    Hydronics. Hydronics (from Ancient Greek hydro- 'water') is the use of liquid water or gaseous water ( steam) or a water solution (usually glycol with water) as a heat-transfer medium in heating and cooling systems. [ 1][ 2] The name differentiates such systems from oil and refrigerant systems. Historically, in large-scale commercial buildings ...

  7. Geyser - Wikipedia

    en.wikipedia.org/wiki/Geyser

    A geyser ( / ˈɡaɪzər /, UK: / ˈɡiːzər /) [ 1][ 2] is a spring with an intermittent discharge of water ejected turbulently and accompanied by steam. The formation of geysers is fairly rare, and is caused by particular hydrogeological conditions that exist only in a few places on Earth. Generally, geyser field sites are located near ...

  8. Air lock - Wikipedia

    en.wikipedia.org/wiki/Air_lock

    Air lock. An air lock is a restriction of, or complete stoppage of liquid flow caused by vapour trapped in a high point of a liquid -filled pipe system. The gas, being less dense than the liquid, rises to any high points. This phenomenon is known as vapor lock, or air lock. Flushing the system with high flow or pressures can help move the gas ...

  9. Piping and plumbing fitting - Wikipedia

    en.wikipedia.org/wiki/Piping_and_plumbing_fitting

    Pipe fittings: 1) Copper (solder); 2) Iron or brass (threaded); 3) Brass (compression); 4) Brass (compression to solder); 5) Brass adapters. PVC fittings. A fitting or adapter is used in pipe systems to connect sections of pipe (designated by nominal size, with greater tolerances of variance) or tube (designated by actual size, with lower ...