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

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

    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.)

  5. Sanitary sewer overflow - Wikipedia

    en.wikipedia.org/wiki/Sanitary_sewer_overflow

    Power failure, human error, or mechanical failure may cause similar discharge of untreated or partially treated sewage from a sewage treatment plant; but this is typically regarded as a sewage treatment plant malfunction rather than a sanitary sewer overflow. Sewage treatment plants may be designed to capture overflow from malfunctioning units ...

  6. How to prevent pipes from freezing in your home (and how to ...

    www.aol.com/prevent-pipes-freezing-home-thaw...

    Running water through your home's pipes will help prevent water from sitting and freezing. Keep your home's thermostat set to the same temperature both during the day and at night. This will ...

  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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