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  2. Drain-waste-vent system - Wikipedia

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

    A sewer pipe is normally at neutral air pressure compared to the surrounding atmosphere.When a column of waste water flows through a pipe, it compresses air ahead of it in the system, creating a positive pressure that must be released so it does not push back on the waste stream and downstream traps, slow drainage, and induce potential clogs.

  3. Air lock - Wikipedia

    en.wikipedia.org/wiki/Air_lock

    If the ground in which the pipe is laid has high points – such as Hi1, 2 etc. and low points between them such as Lo1, 2 etc., then if the pipe is filled from the top, and was empty, the pipe fills OK as far as Hi1. If the water flow velocity is below the rising velocity of air bubbles, then water trickles down to the low point Lo2 and traps ...

  4. January 2025 Richmond water crisis - Wikipedia

    en.wikipedia.org/wiki/January_2025_Richmond...

    City water is one of the county's Suburban Water System's 3 sources. serves the Doswell and Ashland areas are served by the Doswell Water Treatment Plant. Hanover County's 25-year plan does include provisions to construct its own reservoir and an additional water treatment plant, although the County and the City would continue to remain ...

  5. How homeowners can prevent pipes from freezing during winter

    www.aol.com/weather/homeowners-prevent-pipes...

    Check throughout the home for areas where water supply lines are located in unheated areas of the house. "Take measures to prevent the flow of cold air in these areas," Green Apple Mechanical said.

  6. Prepare for the coldest Arctic blast: How to keep your pipes ...

    www.aol.com/news/prepare-coldest-artic-blast...

    Pipes exposed to "severe cold" including outdoor hose bibs, swimming pool supply lines, and water sprinkler lines. (If you have swimming pool or sprinkler supply lines, they needed drained too.)

  7. Here’s what to do if your pipes are frozen as Arctic air ...

    www.aol.com/pipes-frozen-arctic-air-blasts...

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