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  2. List of valves - Wikipedia

    en.wikipedia.org/wiki/List_of_valves

    The inside of an extremely large butterfly valve Duplex ball valve Three check valves in corrosion-resistant Hastelloy Stainless steel gate valve. Valves can be categorized into the following types, based on their operating mechanism: Ball valve, for on–off control without pressure drop. Ideal for quick shut-off, since a 90° turn completely ...

  3. Valve - Wikipedia

    en.wikipedia.org/wiki/Valve

    Schematic 3 way ball valve: L-shaped ball right, T-shaped left. Valves with three ports serve many different functions. A few of the possibilities are listed here. Three-way ball valves come with T- or L-shaped fluid passageways inside the rotor. The T valve might be used to permit connection of one inlet to either or both outlets or connection ...

  4. Double check valve - Wikipedia

    en.wikipedia.org/wiki/Double_check_valve

    Small valves may be so compact as to be barely noticeable particularly when they are integrated into the bodies of existing taps (faucets). Larger check valves may be installed with ball valves at the ends, for isolation and testing. Often, test cocks (very small ball valves) are in place to attach test equipment for evaluating whether the ...

  5. 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]

  6. Plug valve - Wikipedia

    en.wikipedia.org/wiki/Plug_valve

    A 3-way plug valve could also be designed to shift flow between ports 1 and 2, 2 and 3, or 1 and 3, and possibly even connect all three ports together. The flow-directing possibilities in multi-port plug valves are similar to the possibilities in corresponding multi-port ball valves or corresponding multi-port valves with a rotor. An additional ...

  7. He had no family. He was not famous. Yet hundreds attended ...

    www.aol.com/news/had-no-living-family-not...

    He had no living family. He was not famous. He lived alone. Yet on Tuesday, hundreds of people gathered at the graveside of World War II veteran Stephen Kolesnik Jr. and watched him laid to rest.

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