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  2. How To Refund Games On Steam - AOL

    www.aol.com/refund-games-steam-144451381.html

    Click on the purchase that you wish to refund, then click the “I would like a refund” button. From here, you can choose to get help with gameplay or technical issues, or simply request a refund.

  3. Valve Corporation - Wikipedia

    en.wikipedia.org/wiki/Valve_Corporation

    Valve S.a.r.l. Valve GmbH [ 4] Campo Santo. ASN. 32590. Website. valvesoftware.com. Valve Corporation, also known as Valve Software, is an American video game developer, publisher, and digital distribution company headquartered in Bellevue, Washington. It is the developer of the software distribution platform Steam and the game franchises Half ...

  4. Centrifugal governor - Wikipedia

    en.wikipedia.org/wiki/Centrifugal_governor

    Centrifugal governors, also known as "centrifugal regulators" and "fly-ball governors", were invented by Christiaan Huygens and used to regulate the distance and pressure between millstones in windmills in the 17th century. [1] [2] In 1788, James Watt adapted one to control his steam engine where it regulates the admission of steam into the ...

  5. Piston valve (steam engine) - Wikipedia

    en.wikipedia.org/wiki/Piston_valve_(steam_engine)

    The valve is next opened by moving it to the right, allowing the clear space in the middle of the valve to align with the channel in the cylinder above it. Piston valves are one form of valve used to control the flow of steam within a steam engine or locomotive. They control the admission of steam into the cylinders and its subsequent ...

  6. Steam trap - Wikipedia

    en.wikipedia.org/wiki/Steam_trap

    A steam trap is a device used to discharge condensates and non-condensable gases with a negligible consumption or loss of live steam. Steam traps are nothing more than automatic valves. They open, close or modulate automatically. [ 1] The three important functions of steam traps are:

  7. Cylinder (locomotive) - Wikipedia

    en.wikipedia.org/wiki/Cylinder_(locomotive)

    The cylinder is the power-producing element of the steam engine powering a steam locomotive. The cylinder is made pressure-tight with end covers and a piston; a valve distributes the steam to the ends of the cylinder. Cylinders were initially cast iron, but later made of steel. The cylinder casting includes other features such as (in the case ...

  8. Wheel arrangement - Wikipedia

    en.wikipedia.org/wiki/Wheel_arrangement

    Wheel arrangement. In rail transport, a wheel arrangement or wheel configuration is a system of classifying the way in which wheels are distributed under a locomotive. [ 1] Several notations exist to describe the wheel assemblies of a locomotive by type, position, and connections, with the adopted notations varying by country.

  9. Beam engine - Wikipedia

    en.wikipedia.org/wiki/Beam_engine

    A Watt engine: showing entry of steam and water. A beam engine is a type of steam engine where a pivoted overhead beam is used to apply the force from a vertical piston to a vertical connecting rod. This configuration, with the engine directly driving a pump, was first used by Thomas Newcomen around 1705 to remove water from mines in Cornwall.