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  2. Water timer - Wikipedia

    en.wikipedia.org/wiki/Water_timer

    The electric pump is to be arranged to be turned on and off at regular intervals by the time switch to administer (fairly) precise and regular water quantities. [1] This approach, used frequently in DIY watering systems, allows financial savings as the water timer can be discarded. For high-end applications, water timers sometimes allow more ...

  3. Andy Milonakis - Wikipedia

    en.wikipedia.org/wiki/Andy_Milonakis

    This is an accepted version of this page This is the latest accepted revision, reviewed on 19 January 2025. American comedian, actor, rapper, and internet personality Andy Milonakis Milonakis at the 2012 VidCon Born Andrew Michael Milonakis (1976-01-30) January 30, 1976 (age 49) Katonah, New York, U.S. Occupations Comedian actor rapper internet personality Years active 2003–present YouTube ...

  4. Mercury switch - Wikipedia

    en.wikipedia.org/wiki/Mercury_switch

    A Single-Pole, Single-Throw (SPST) mercury switch on millimetre graph paper, device length approximately 1.5 cm Another mercury switch design. A mercury switch is an electrical switch that opens and closes a circuit when a small amount of the liquid metal mercury connects metal electrodes to close the circuit. There are several different basic ...

  5. Sprinkler system - Wikipedia

    en.wikipedia.org/wiki/Sprinkler_system

    Sprinkler system may refer to: Irrigation sprinkler, a device for irrigation of lawns or crops; Fire sprinkler system, the entire systems of pipes and sprinklers ...

  6. Fire sprinkler system - Wikipedia

    en.wikipedia.org/wiki/Fire_sprinkler_system

    A fire sprinkler system is an active fire protection method, consisting of a water supply system providing adequate pressure and flowrate to a water distribution piping system, to which fire sprinklers are connected. Although initially used only in factories and large commercial buildings, systems for homes and small buildings are now available ...

  7. Booster pump - Wikipedia

    en.wikipedia.org/wiki/Booster_pump

    A small auxiliary electrically-powered booster pump (called a "jockey pump") is often included in the system to maintain the sprinkler pipes at sufficient pressure, without requiring startup of the large diesel engine. Any emergency system must be periodically tested and maintained to ensure its reliability.

  8. Fire sprinkler - Wikipedia

    en.wikipedia.org/wiki/Fire_sprinkler

    A fire sprinkler mounted on a ceiling. A fire sprinkler or sprinkler head is the component of a fire sprinkler system that discharges water when the effects of a fire have been detected, such as when a predetermined temperature has been exceeded. Fire sprinklers are extensively used worldwide, with over 40 million sprinkler heads fitted each year.

  9. Manual fire alarm activation - Wikipedia

    en.wikipedia.org/wiki/Manual_fire_alarm_activation

    System tests could be conducted in one of two ways: In a coded pull station, there is either a test hole on the front (usually activated with an Allen wrench) or a test switch on the inside. Turning the switch one way causes the notification appliances to sound continuous (or in the case of single-stroke bells, ding once). Turning it the other ...

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