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  2. Nozzle and flapper - Wikipedia

    en.wikipedia.org/wiki/Nozzle_and_flapper

    The nozzle and flapper mechanism is a displacement type detector which converts mechanical movement into a pressure signal by covering the opening of a nozzle with a flat plate called the flapper. [1] This restricts fluid flow through the nozzle and generates a pressure signal.

  3. Crankcase ventilation system - Wikipedia

    en.wikipedia.org/wiki/Crankcase_ventilation_system

    PCV valve on Ford Taunus V4 engine (feeding from left side valve cover into the inlet manifold) A crankcase ventilation system (CVS) removes unwanted gases from the crankcase of an internal combustion engine. The system usually consists of a tube, a one-way valve and a vacuum source (such as the inlet manifold).

  4. Gas leak - Wikipedia

    en.wikipedia.org/wiki/Gas_leak

    Gas leaks can damage or kill plants. [4] [5] In addition to leaks from natural gas pipes, methane and other gases migrating from landfill garbage disposal sites can also cause chlorosis and necrosis in grass, weeds, or trees. [6] In some cases, leaking gas may migrate as far as 100 feet (30 m) from the source of the leak to an affected tree. [7]

  5. Christmas tragedy: 4 found dead at vacation home from ... - AOL

    www.aol.com/christmas-tragedy-4-found-dead...

    Have your heating system, water heater, and other gas-, oil- or coal-powered appliances serviced yearly by technicians. Remember to service any appliances in your home that emit gas. Clean and ...

  6. List of pipeline accidents in the United States (1900–1949)

    en.wikipedia.org/wiki/List_of_pipeline_accidents...

    May – Three teachers and a plumber were injured by a gas explosion at Saint Michael's Roman Catholic Church parish school in Pittsburgh, Pennsylvania. [4]October – In Boston, Massachusetts, five women narrowly escaped being burned alive after a leaking gas meter exploded in the basement of their three-story tenement, starting a fire that ascended through the stairwells and drove them out ...

  7. Costco issues recall for cold and flu medication over ...

    www.aol.com/costco-issues-recall-cold-flu...

    Costco has issued a recall for a cold and flu medication, sold at its stores at the end of 2024, over concerns of contamination.. The retail giant, in an advisory issued on Jan. 2, said Kirkland ...

  8. The Only Way To Prevent Bagged Salads and Greens From Rotting

    www.aol.com/only-way-prevent-bagged-salads...

    What Causes Good Greens To Go Bad. Unlike what the post suggests, leafy greens aren’t a major source of ethylene.But they are sensitive to produce that emits the gas. That’s why you should ...

  9. Duct (flow) - Wikipedia

    en.wikipedia.org/wiki/Duct_(flow)

    Ducts for air pollution control in a 17000 standard cubic feet per minute regenerative thermal oxidizer (RTO). A round galvanized steel duct connecting to a typical diffuser Fire-resistance rated mechanical shaft with HVAC sheet metal ducting and copper piping, as well as "HOW" (Head-Of-Wall) joint between top of concrete block wall and underside of concrete slab, firestopped with ceramic ...

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