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  2. Float switch - Wikipedia

    en.wikipedia.org/wiki/Float_switch

    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. One pattern uses a reed switch mounted in a tube; a float, containing a magnet, surrounds the tube and ...

  3. Lowe's - Wikipedia

    en.wikipedia.org/wiki/Lowe's

    The first Lowe's store, Mr. L.S. Lowe's North Wilkesboro Hardware, opened in North Wilkesboro, North Carolina, in 1921 by Lucius Smith Lowe. [8] After Lowe died in 1940, the business was inherited by his daughter, Ruth Buchan, who sold the company to her brother, James Lowe, for $4,200, [ 9 ] that same year.

  4. Float (liquid level) - Wikipedia

    en.wikipedia.org/wiki/Float_(liquid_level)

    Stainless Steel would rapidly corrode in chromic acid, which is why one would have the option to go with a PVDF float, which is a material with great chemical resistance to chromic acid. [ 3 ] Thermoplastic level floats are a great alternative to some other forms of level sensors such as ultrasonic or radar when dealing with corrosive chemical ...

  5. Dry running protection - Wikipedia

    en.wikipedia.org/wiki/Dry_running_protection

    Dry running protection, also known as dry-run protection or dry-running protection, is a type of protection mechanism to prevent a rotor, pump or stirrer shaft from operating without any medium added, as the bearing and shaft seal might be damaged if the motor is run while dry. [1]

  6. Buchholz relay - Wikipedia

    en.wikipedia.org/wiki/Buchholz_relay

    A float switch in the relay is used to initiate an alarm signal. Depending on design, a second float may also serve to detect slow oil leaks. If an electrical arc forms, gas accumulation is rapid, and oil flows rapidly into the conservator. This flow of oil operates a switch attached to a vane located in the path of the moving oil.

  7. Needle valve - Wikipedia

    en.wikipedia.org/wiki/Needle_valve

    The intention here is to obtain a well-defined seat between two narrow mating surfaces, giving firm shutoff of the flow from only a light float pressure. Needle valves are also commonly used to provide shut off for the pressure gauge or on applicators to shut off the supply of NH3 to the knives in anhydrous ammonia (NH3) applications.

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