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  2. Backflow prevention device - Wikipedia

    en.wikipedia.org/wiki/Backflow_prevention_device

    Backflow prevention device. The simplest, most reliable way to provide backflow prevention is to provide an air gap.An air gap is simply an open vertical space between any device that connects to a plumbing system (like a valve or faucet) and any place where contaminated water can collect or pool.

  3. Backwater valve - Wikipedia

    en.wikipedia.org/wiki/Backwater_valve

    The valve contains a flap that allows water to exit the home, but closes to prevent the back flow into the home. [1] 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.

  4. Backflow - Wikipedia

    en.wikipedia.org/wiki/Backflow

    A recent introduction to the UK has been the Reduced Pressure Zone (RPZ) valve, a form of double check valve where the intervening zone is drained and normally kept empty. [1] If the downstream valve leaks and permits backflow, this will drain out through the vent rather than building up pressure against the upstream valve.

  5. 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.

  6. Watch: SpaceX launches its Starship rocket for the 3rd time - AOL

    www.aol.com/news/watch-live-spacex-attempts...

    The rocket took off from its launchpad in Boca Chica at about 9:25 a.m. ET, clearing several critical hurdles along its hourlong journey. "Starship reached orbital velocity!" SpaceX founder Elon ...

  7. Boca Chica (Texas) - Wikipedia

    en.wikipedia.org/wiki/Boca_Chica_(Texas)

    Boca Chica Beach is part of the 10,680-acre (43.2 km 2) Boca Chica tract of the Lower Rio Grande Valley National Wildlife Refuge. The tract is a former Texas state park located in the Boca Chica Subdelta separated from Mexico by the Rio Grande. The park was acquired by the state of Texas and opened in May 1994.

  8. SpaceX's Starship reaches orbit from Boca Chica Beach - AOL

    www.aol.com/spacexs-starship-reaches-orbit-boca...

    Updated at 9:49 a.m. BOCA CHICA — Starship S28 and Super Heavy B10 lifted off from Boca Chica at 8:25 a.m. Thursday for SpaceX's third Starship orbital flight attempt, after being granted ...

  9. Check valve - Wikipedia

    en.wikipedia.org/wiki/Check_valve

    A check valve, non-return valve, reflux valve, retention valve, foot valve, or one-way valve is a valve that normally allows fluid (liquid or gas) to flow through it in only one direction. [ 1 ] Check valves are two-port valves, meaning they have two openings in the body, one for fluid to enter and the other for fluid to leave.

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