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  2. Sail switch - Wikipedia

    en.wikipedia.org/wiki/Sail_switch

    A sail switch, vane switch or flow switch is a mechanical switch that is actuated on or off in response to the flow or non-flow of a fluid such as air or water. [1] A sail switch typically operates through the use of a paddle or a diaphragm which gets displaced due to the force of fluid or air moving past it.

  3. Aquatic locomotion - Wikipedia

    en.wikipedia.org/wiki/Aquatic_locomotion

    Shrimp paddle with special swimming legs Daphnia swims by beating its antennae. Among the radiata, jellyfish and their kin, the main form of swimming is to flex their cup shaped bodies. All jellyfish are free-swimming, although many of these spend most of their time swimming passively. Passive swimming is akin to gliding; the organism floats ...

  4. Swimming stroke - Wikipedia

    en.wikipedia.org/wiki/Swimming_stroke

    Dog paddle: face over water and paddling with alternate hands, often with the nose and mouth above the water. This stroke can be used in reverse to propel the body feet first. Survival travel stroke: Alternating underwater arm stroke, one cycle for propulsion, one for a lift to stay on the surface. This style is slow but sustainable. [citation ...

  5. Backflow prevention device - Wikipedia

    en.wikipedia.org/wiki/Backflow_prevention_device

    Backflow prevention device. The simplest, most reliable way to provide backflow prevention is to provide an air gap.An air gap is simply an open vertical space between any device that connects to a plumbing system (like a valve or faucet) and any place where contaminated water can collect or pool.

  6. Paddle wheel - Wikipedia

    en.wikipedia.org/wiki/Paddle_wheel

    The paddle wheel is a device for converting between rotary motion of a shaft and linear motion of a fluid. In the linear-to-rotary direction, it is placed in a fluid stream to convert the linear motion of the fluid into rotation of the wheel. Such a rotation can be used as a source of power, or as an indication of the speed of flow.

  7. Fluid Components International - Wikipedia

    en.wikipedia.org/wiki/Fluid_Components_International

    FCI operates a NIST flow calibration laboratory with 19 precision flow stands. FCI utilizes these precision flow stands to flow actual gases and reference fluids matched to the temperature, process conditions, and line size of individual customers' flow meter applications. The company has subsidiaries in Tilburg, Netherlands and Beijing, China.

  8. History of competitive swimwear - Wikipedia

    en.wikipedia.org/wiki/History_of_competitive...

    Like other suits used for high-competition racing, LZR Racer allows for better oxygen flow to the muscles, and holds the body in a more hydrodynamic position, while repelling water and increasing flexibility. [20] The seams of the suit are ultrasonically welded to further reduce drag. [16] [18] [21] The suit is chlorine-resistant and quick to ...

  9. Flow measurement - Wikipedia

    en.wikipedia.org/wiki/Flow_measurement

    Flow measurement is the quantification of bulk fluid movement. Flow can be measured using devices called flowmeters in various ways. The common types of flowmeters with industrial applications are listed below: Obstruction type (differential pressure or variable area) Inferential (turbine type) Electromagnetic

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