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  2. Backflow prevention device - Wikipedia

    en.wikipedia.org/wiki/Backflow_prevention_device

    Backflow means the undesirable reversal of flow of a liquid, gas, or suspended solid into the potable water supply; a backflow preventer is designed to keep this from happening. Points at which a potable water system connects with a non-potable water system are called cross connections .

  3. Double check valve - Wikipedia

    en.wikipedia.org/wiki/Double_check_valve

    A double check valve or double check assembly (DCA) is a backflow prevention device designed to protect water supplies from contamination. [1] It is different from the two-way check valves (sometimes erroneously referred to as double check valves) used in air brake systems on heavy trucks which select from the highest pressure source.

  4. Backwater valve - Wikipedia

    en.wikipedia.org/wiki/Backwater_valve

    Backwater valves commonly activate when a city's sewer lines are unable to handle a large amount of falling precipitation; this puts homes that are tied into the storm lines at risk of having water back flow into them. [citation needed] There is a big difference between backwater valves and backflow preventers: [citation needed]

  5. Atmospheric vacuum breaker - Wikipedia

    en.wikipedia.org/wiki/Atmospheric_vacuum_breaker

    It is usually constructed of brass and resembles a 90-degree elbow with a hood on its top to allow air to enter the water system if a siphon attempts to form. Inside this elbow is a poppet valve that is held "up" by the water pressure found in the system, closing the air entrance to the device. If the pressure in the "upstream side" is reduced ...

  6. Coppell, Texas - Wikipedia

    en.wikipedia.org/wiki/Coppell,_Texas

    George Coppell. The Coppell area was settled by German and French immigrants in the 1840s. Members of the Peters Colony also settled here in the 1840s. [8] Originally named Gibbs Station, after Barnett Gibbs (one of Texas's first lieutenant governors), the town was renamed in 1892 for George Coppell, a New York banker, who was born in Liverpool, England and probably moved to the United States ...

  7. 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.

  8. North Lake (Dallas) - Wikipedia

    en.wikipedia.org/wiki/North_Lake_(Dallas)

    The City of Irving, Texas leased land south of the lake as a park in the 1980s and 1990s. North Lake Park was popular with personal watercraft enthusiasts and provided a runway for radio-controlled aircraft. The owner of the lake, power company TXU, turned down offers in 2000 to sell the land to the cities of Coppell, Texas or Irving, Texas.

  9. Coppell - Wikipedia

    en.wikipedia.org/wiki/Coppell

    Coppell may refer to: Coppell, Ontario; Coppell, Texas. Coppell High School; Harry Coppell (born 1996), English pole vaulter; Steve Coppell (born 1955), English ...