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  2. Circulator pump - Wikipedia

    en.wikipedia.org/wiki/Circulator_pump

    This avoids one of the principal challenges faced by the larger, two-part pumps: maintaining a water-tight seal at the point where the pump drive shaft enters the pump body. Small- to medium-sized circulator pumps are usually supported entirely by the pipe flanges that join them to the rest of the hydronic plumbing. Large pumps are usually pad ...

  3. Booster pump - Wikipedia

    en.wikipedia.org/wiki/Booster_pump

    The engine needs a fuel tank and an automatic controller that will start the booster pump when it is needed. 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.

  4. Failures of water supply and sanitation systems - Wikipedia

    en.wikipedia.org/wiki/Failures_of_water_supply...

    31% of the improved rural water points are not functioning (2008). [62] 22% of 24,769 handpumps were found to be non-functional in 2007 [11] 49% of all gravity flow system taps were not working (2007). [63] In 1997, a survey of almost 900 tap stands found that more than 50% of them were not supplying water.

  5. Cavitation - Wikipedia

    en.wikipedia.org/wiki/Cavitation

    Since all pumps require well-developed inlet flow to meet their potential, a pump may not perform or be as reliable as expected due to a faulty suction piping layout such as a close-coupled elbow on the inlet flange. When poorly developed flow enters the pump impeller, it strikes the vanes and is unable to follow the impeller passage.

  6. Swimming pool sanitation - Wikipedia

    en.wikipedia.org/wiki/Swimming_pool_sanitation

    An electrically operated water pump is the prime motivator in recirculating the water from the pool. Water is forced through a filter and then returned to the pool. Using a water pump by itself is often not sufficient to completely sanitize a pool. Commercial and public pool pumps usually run 24 hours a day for the entire operating season of ...

  7. Pumping station - Wikipedia

    en.wikipedia.org/wiki/Pumping_station

    In this configuration pumps are installed below ground level on the base of the dry well so that their inlets are below water level on pump start, priming the pump and also maximising the available NPSH. Although nominally isolated from the sewage in the wet well, dry wells are underground, confined spaces and require appropriate precautions ...