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  2. Ballcock - Wikipedia

    en.wikipedia.org/wiki/Ballcock

    The valve is connected to the incoming water supply, and is opened and closed by the lever which has the float mounted on the end. When the water level rises, the float rises with it; once it rises to a pre-set level, the mechanism forces the lever to close the valve and shut off the water flow.

  3. Float switch - Wikipedia

    en.wikipedia.org/wiki/Float_switch

    A float switch is a type of level sensor, a device used to detect the level of liquid within a tank. The switch may be used to control a pump, as an indicator, an alarm, or to control other devices. One type of float switch uses a mercury switch inside a hinged float. Another common type is a float that raises a rod to actuate a microswitch.

  4. File:Concentric Float Valve.svg - Wikipedia

    en.wikipedia.org/.../File:Concentric_Float_Valve.svg

    Filled areas to match other diagram. Category:Valves Category:Plumbing Category:Inkscape: 11:36, 23 May 2010: 1,190 × 954 (22 KB) Egmason {{Information |Description={{en|1=The Concentric Float valve opens when the fluid level is low, allowing more fluid to eneter (Figure 1).

  5. List of valves - Wikipedia

    en.wikipedia.org/wiki/List_of_valves

    Valves can be categorized into the following types, based on their operating mechanism: Ball valve, for on–off control without pressure drop. Ideal for quick shut-off, since a 90° turn completely shuts off, compared to multiple 360° turns for other manual valves; Butterfly valve, for on–off flow control in large diameter pipes

  6. Float chamber - Wikipedia

    en.wikipedia.org/wiki/Float_chamber

    The valve is often described as a needle valve, although this is a misnomer. A true needle valve uses a tapered needle in a tapered seat, so as to provide fine control over flow rate. The float valve uses a pointed needle against a square-edged seat, to give a positive shut-off. As the float relies on gravity, the chamber must be mounted ...

  7. Snorkel (swimming) - Wikipedia

    en.wikipedia.org/wiki/Snorkel_(swimming)

    A model enclosing the eyes and the nose only. A permanent single snorkel emerges from the top of the mask and terminates above with a ball float shut-off valve. B. A model with a chinpiece to enclose the eyes, the nose and the mouth. Permanent twin snorkels emerge from either side of the mask and terminate above with "gamma" shut-off valves. C.

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