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  2. Float switch - Wikipedia

    en.wikipedia.org/wiki/Float_switch

    A pedestal sump pump with a 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 ...

  3. 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]

  4. Sump pump - Wikipedia

    en.wikipedia.org/wiki/Sump_pump

    Since the level control switch is the primary point of failure with any sump pump, submersible pumps with auxiliary, or "piggyback", designs allow for replacement of the switch with minimal effort. Today, submersible pumps are the most popular style, while residential pedestal pumps are low volume, economical designs with limited service life. [3]

  5. Submersible pump - Wikipedia

    en.wikipedia.org/wiki/Submersible_pump

    A 0.75 HP bore-well submersible pump which had been used to pump groundwater One style of submersible pump for industrial use. Outlet pipe and electrical cable not connected. A submersible pump (or electric submersible pump (ESP) is a device which has a hermetically sealed motor close-coupled to the pump body. The whole assembly is submerged in ...

  6. Grinder pump - Wikipedia

    en.wikipedia.org/wiki/Grinder_pump

    A pump for household use is usually 1 hp, 1.5 hp or 2 hp. A cutting mechanism macerates waste and grinds items that are not normally found in sewage, but may get flushed down the toilet. The pump has a level sensor either built into the pump, called “sensing bells,” or attached externally to the pump, typically a float switch. (The level ...

  7. Franklin Electric - Wikipedia

    en.wikipedia.org/wiki/Franklin_Electric

    Another early Franklin success was the Submatic sump pump. The Submatic was sealed in a unique stainless-steel casing designed to automatically sense when water was rising and turn on the motor. With the Submatic, an external float switch was no longer needed, and the motor could be mounted out of sight beneath the floor level.

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