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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. Roto-Rooter - Wikipedia

    en.wikipedia.org/wiki/Roto-Rooter

    Roto-Rooter Plumbing & Water Cleanup (formerly called Roto-Rooter Plumbing & Drain Service) is a plumbing company based in Cincinnati, Ohio. The company, founded in 1935, originally specialized in clearing tree roots and other obstructions from sewer lines.

  4. Drain cleaner - Wikipedia

    en.wikipedia.org/wiki/Drain_cleaner

    Most municipal building codes mandate that drain plumbing increase in diameter as it moves closer to the municipal sewer system. i.e., most kitchen sinks evacuate water with a 1 + 1 ⁄ 2-inch drain pipe, which feeds into a larger 4-inch drain pipe on the main plumbing stack before heading to a septic tank or to the city sewage system. This ...

  5. Plumbing - Wikipedia

    en.wikipedia.org/wiki/Plumbing

    Plastic supply pipes have become increasingly common, with a variety of materials and fittings employed. PVC/CPVC – rigid plastic pipes similar to PVC drain pipes but with thicker walls to deal with municipal water pressure, introduced around 1970. PVC stands for polyvinyl chloride, and it has become a common replacement for metal piping.

  6. How to Fix Your Frozen Pipes, According to Experts - AOL

    www.aol.com/keep-pipes-freezing-winter-according...

    Pipes near exterior walls or foundation: ... When shutting down your sprinklers for the season, go one step further and be sure to disconnect and drain your garden hoses as well. And if there are ...

  7. Chemical drain cleaners - Wikipedia

    en.wikipedia.org/wiki/Chemical_drain_cleaners

    Due to the vigorous reaction between the acid and water, such acidic drain openers should be added slowly into the pipe to be cleaned. Acidic drain openers (in very high concentrations) hydrolyze proteins and fats via acid hydrolysis (acid-catalyzed hydrolysis), similar to their alkaline versions: RCONH 2 (amide or proteins) + H 3 O + → NH 4 ...

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