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  2. Ball valve - Wikipedia

    en.wikipedia.org/wiki/Ball_valve

    A ball valve is a flow control device which uses a hollow, perforated, and pivoting ball to control fluid flowing through it. It is open when the hole through the middle of the ball is in line with the flow inlet, and closed when it is pivoted 90 degrees by the valve handle, blocking the flow. [1]

  3. Saddle valve - Wikipedia

    en.wikipedia.org/wiki/Saddle_valve

    A saddle valve is mounted directly on to a pipe which is usually 1/2 inch copper tubing. Saddle valves are self-tapping devices. Once mounted on a line, with the included rubber seal in place, all that is required is to turn the valve clockwise until it pierces the water line. When the valve handle can no longer be turned, it is done tapping ...

  4. Piping and plumbing fitting - Wikipedia

    en.wikipedia.org/wiki/Piping_and_plumbing_fitting

    Non-return or check valves allow the free flow of a fluid in one direction but prevent its flow in a reverse direction. They are often seen in drainage or sewage systems but may also be used in pressurized systems. Valves are available in several types, based on design and purpose: Gate, plug, or ball valves – Isolation; Globe valve ...

  5. Betz mystery sphere - Wikipedia

    en.wikipedia.org/wiki/Betz_mystery_sphere

    [3] [4] The family of three, Antoine, Jerri, and son Terry, came across a small metal sphere the size of a bowling ball. Their first thought was the sphere had been a cannonball left from New World conquistadors. They decided to take the sphere back to their house. [2] Several days later, Terry was playing the guitar in their home.

  6. 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.

  7. Donald Trump loves to use the stock market as a scoreboard ...

    www.aol.com/donald-trump-loves-stock-market...

    January 17, 2025 at 2:00 PM. Donald Trump famously helped measure the success of his time in office using the stock market. But in the first year of his second term, ...

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