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  2. Check valve - Wikipedia

    en.wikipedia.org/wiki/Check_valve

    Tilting-disc inconel check valve Check valve symbol on piping and instrumentation diagrams. The arrow shows the flow direction. Vertical lift 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]

  3. Piping and instrumentation diagram - Wikipedia

    en.wikipedia.org/wiki/Piping_and_instrumentation...

    A piping and instrumentation diagram (P&ID) is defined as follows: A diagram which shows the interconnection of process equipment and the instrumentation used to control the process. In the process industry, a standard set of symbols is used to prepare drawings of processes. The instrument symbols used in these drawings are generally based on ...

  4. Engineering drawing abbreviations and symbols - Wikipedia

    en.wikipedia.org/wiki/Engineering_drawing...

    In a feature control frame ( FCF ), the ⌀ symbol tells you that the tolerance zone for the geometric tolerance is cylindrical. Abbreviations for "diameter" include ⌀, DIA, and D. D. diameter; delta. Abbreviations for "diameter" include ⌀, DIA, and D. For delta usage, see for example "delta notes". DIA[ 2] diameter.

  5. Convection oven - Wikipedia

    en.wikipedia.org/wiki/Convection_oven

    A convection oven (also known as a fan-assisted oven, turbo broiler or simply a fan oven or turbo) is an oven that has fans to circulate air around food to create an evenly heated environment. The increased air circulation causes a fan-assisted oven to cook food faster than a conventional non-fan oven, which relies only on natural convection to ...

  6. Poppet valve - Wikipedia

    en.wikipedia.org/wiki/Poppet_valve

    Poppet valve. A poppet valve (also sometimes called mushroom valve[ 1]) is a valve typically used to control the timing and quantity of petrol (gas) or vapour flow into or out of an engine, but with many other applications. It consists of a hole or open-ended chamber, usually round or oval in cross-section, and a plug, usually a disk shape on ...

  7. File:Check Valve.svg - Wikipedia

    en.wikipedia.org/wiki/File:Check_Valve.svg

    File:Check Valve.svg. Size of this PNG preview of this SVG file: 512 × 341 pixels. Other resolutions: 320 × 213 pixels | 640 × 426 pixels | 1,024 × 682 pixels | 1,280 × 853 pixels | 2,560 × 1,705 pixels. Original file ‎ (SVG file, nominally 512 × 341 pixels, file size: 355 bytes) This is a file from the Wikimedia Commons.

  8. Shuttle valve - Wikipedia

    en.wikipedia.org/wiki/Shuttle_valve

    Air pilot control: converting from air to oil results in locking of the cylinder. Shifting the four-way valve to either extreme position applies the air pilot through the shuttle valve, holding the two air-operated valves open and applying oil under air pressure to the corresponding side of the cylinder. Positioning a manual valve to neutral ...

  9. Four volunteers, 378 days: NASA completes first mission ...

    www.aol.com/news/four-volunteers-378-days-nasa...

    Updated July 9, 2024 at 10:26 PM. A NASA mission to test how living on Mars would stress and test a human crew ended Saturday, with four volunteers emerging from more than a year in a 1,700-square ...