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  2. Nozzle and flapper - Wikipedia

    en.wikipedia.org/wiki/Nozzle_and_flapper

    The nozzle and flapper mechanism is a displacement type detector which converts mechanical movement into a pressure signal by covering the opening of a nozzle with a flat plate called the flapper. [1] This restricts fluid flow through the nozzle and generates a pressure signal.

  3. Flare fitting - Wikipedia

    en.wikipedia.org/wiki/Flare_fitting

    Z223.1 National Fuel Gas Code. Many plumbing codes, towns, and water companies require copper tube used for water service to be type-L or type-K. All National Model Codes permit the use of flare fitting joints, however, the authority having jurisdiction (AHJ) should be consulted to determine acceptance for a specific application.

  4. Downhole safety valve - Wikipedia

    en.wikipedia.org/wiki/Downhole_safety_valve

    When hydraulic pressure is applied down a control line, the hydraulic pressure forces a sleeve within the valve to slide downwards. This movement compresses a large spring and pushes the flapper downwards to open the valve. When hydraulic pressure is removed, the spring pushes the sleeve back up and causes the flapper to shut.

  5. 35 Stories From People Who Probably Had A Worst Christmas ...

    www.aol.com/51-people-share-worst-christmases...

    Image credits: borez #2. 2008: I came down with swine flu and had to wear a surgical mask. My deadbeat dad went to jail. And on Christmas morning I found my beloved pet parakeet dead on the bottom ...

  6. Poppet valve - Wikipedia

    en.wikipedia.org/wiki/Poppet_valve

    The word poppet shares etymology with "puppet": it is from the Middle English popet ("youth" or "doll"), from Middle French poupette, which is a diminutive of poupée.The use of the word poppet to describe a valve comes from the same word applied to marionettes, which, like the poppet valve, move bodily in response to remote motion transmitted linearly.

  7. Trump may seek dismissal of hush money case, sentencing delayed

    www.aol.com/news/trump-granted-permission-seek...

    NEW YORK (Reuters) -Donald Trump may seek dismissal of the criminal case in which he was convicted in May of 34 felony counts involving hush money paid to a porn star, a judge ruled on Friday ...

  8. Drunk grandma stabs daughter, grandson during Thanksgiving ...

    www.aol.com/drunk-grandma-stabs-daughter...

    An angry, drunken grandma has been busted in Tennessee for allegedly stabbing her daughter and grandson with a kitchen knife during a Thanksgiving Day argument. Lachunda Johnson, 55, of Memphis ...

  9. Double check valve - Wikipedia

    en.wikipedia.org/wiki/Double_check_valve

    A dual check backflow preventer is similar to a double check valve in operation. It has two independent spring-loaded check valves. However, dual check valves usually do not include shutoff valves, may or may not be equipped with test cocks or ports, and is generally less reliable than a double check valve.

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