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  2. Ball valve - Wikipedia

    en.wikipedia.org/wiki/Ball_valve

    Usually the maximum working pressure for the high-pressure ball valves is 7,500 psi (520 bar) and depends on the structure, sizes and sealing materials. The maximum working pressure of high-pressure ball valves can be up to 15,000 psi (1,000 bar). High-pressure ball valves are often used in hydraulic systems, so they are also known as hydraulic ...

  3. Betz mystery sphere - Wikipedia

    en.wikipedia.org/wiki/Betz_mystery_sphere

    Skeptoid noted coverage of New Mexico artist James Durling-Jones, who had been collecting scrap metal for use in sculptures; Durling-Jones reported having loaded ball check valves into the rooftop luggage rack of his Volkswagen Bus, and having "(driven) through the Jacksonville area around Easter of 1971, at which time a few of the balls rolled ...

  4. Ballcock - Wikipedia

    en.wikipedia.org/wiki/Ballcock

    The float is often ball-shaped, hence the name ballcock. The valve is connected to the incoming water supply , and is opened and closed by the lever which has the float mounted on the end. When the water level rises, the float rises with it; once it rises to a pre-set level, the mechanism forces the lever to close the valve and shut off the ...

  5. Check valve - Wikipedia

    en.wikipedia.org/wiki/Check_valve

    A ball check valve is a check valve in which the closing member, the movable part to block the flow, is a ball. In some ball check valves, the ball is spring-loaded to help keep it shut. For those designs without a spring, reverse flow is required to move the ball toward the seat and create a seal.

  6. 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 ...

  7. David Abbott (magician) - Wikipedia

    en.wikipedia.org/wiki/David_Abbott_(magician)

    David Phelps Abbott (September 22, 1863 – June 12, 1934) was an American magician, author and inventor known for creating effects such as the floating ball, as well as for his publications exposing mediums.