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  2. Mk 2 grenade - Wikipedia

    en.wikipedia.org/wiki/Mk_2_grenade

    The Mk 2 grenade (initially known as the Mk II), also nicknamed the Pineapple is a fragmentation-type anti-personnel hand grenade introduced by the U.S. armed forces in 1918. It was the standard issue anti-personnel grenade used during World War II , and also saw limited service in later conflicts, including the Korean War and Vietnam War .

  3. Miss Shilling's orifice - Wikipedia

    en.wikipedia.org/wiki/Miss_Shilling's_orifice

    The Rolls-Royce Merlin engine originally came with a direct carburettor, prone to cut-out due to fuel flooding in negative G. Beatrice Shilling Miss Shilling's orifice was a very simple technical device created to counter engine cut-outs experienced during negative G manoeuvres in early Spitfire and Hurricane fighter aeroplanes during the Battle of Britain.

  4. Valve replacement - Wikipedia

    en.wikipedia.org/wiki/Valve_replacement

    Valve replacement surgery is the replacement of one or more of the heart valves with either an artificial heart valve or a bioprosthesis (homograft from human tissue or xenograft e.g. from pig). It is an alternative to valve repair .

  5. Make cutting a pineapple easy and mess-free with this gadget

    www.aol.com/entertainment/cutting-pineapple-easy...

    Don’t let a cutting pineapple intimidate you ever again! Shop here: https://amzn.to/34ZQje6 Our team is dedicated to finding and telling you more about the products and deals we love. If you ...

  6. Pilot-operated relief valve - Wikipedia

    en.wikipedia.org/wiki/Pilot-operated_relief_valve

    A separate actuator on the piping releases pressure in the line if it crosses a threshold. This releases the pressure on the back of the seal, causing the valve to open. The essential parts of a PORV are a pilot valve (or control pilot), a main valve, a pilot tube, the dome, a disc or piston, and a seat. The volume above the piston is called ...

  7. Trip valve gear - Wikipedia

    en.wikipedia.org/wiki/Trip_valve_gear

    The valve itself can be a drop valve or a Corliss valve. Trip valve gear was applied to larger stationary engines. It was not used in transport applications, [ft 1] as it was not suitable for high speed. [1] The trip point of the valve mechanism, and therefore the cut-off, would be adjusted either manually or automatically by the governor.

  8. Cutoff (steam engine) - Wikipedia

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

    In a steam engine, cutoff is the point in the piston stroke at which the inlet valve is closed. On a steam locomotive, the cutoff is controlled by the reversing gear.. The point at which the inlet valve closes and stops the entry of steam into the cylinder from the boiler plays a crucial role in the control of a steam engine.

  9. Partial stroke testing - Wikipedia

    en.wikipedia.org/wiki/Partial_stroke_testing

    Partial stroke testing is an accepted petroleum industry standard technique and is also quantified in detail by regulatory bodies such as the International Electrotechnical Commission (IEC) and the Instrument Society of Automation (ISA).