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  2. Swimming machine - Wikipedia

    en.wikipedia.org/wiki/Swimming_machine

    The world's first swimming machine was completed in the Sportforum Hohenschönhausen in East Berlin in 1976. It was used by the top athletes of East Germany. [2] [3] Initially, swimming machines were made in the form of pump-driven jetted streams but received criticism since they created turbulence and an unnatural swimming environment. They ...

  3. Pool skimmer - Wikipedia

    en.wikipedia.org/wiki/Pool_skimmer

    Pool with side skimmer. A skimmer or surface separator [1] (it separates substances from the surface of a liquid) [2] [3] is an essential accessory for the maintenance and cleaning of the water in a swimming pool.

  4. Swimming pool sanitation - Wikipedia

    en.wikipedia.org/wiki/Swimming_pool_sanitation

    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 the pool. Residential pool pumps are typically run for 4 hours per day in winter (when the pool is not ...

  5. Comparison of pumps - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_pumps

    Different types of pumps are suitable for different applications, for example: a pump's maximum lift height also determines the applications it can be used for. Low-lift pumps are only suitable for the pumping of surface water (e.g., irrigation, drainage of lands, ...), while high-lift pumps allow deep water pumping (e.g., potable water pumping ...

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  7. Swimming pool - Wikipedia

    en.wikipedia.org/wiki/Swimming_pool

    In an Olympic swimming pool each lane is 2.5 meters wide [25] and contains 10 lanes, thus making the pool 25 meters wide. Depth: The depth of a swimming pool depends on the purpose of the pool, and whether it is open to the public or strictly for private use. If it is a private casual, relaxing pool, it may go from 1.0 to 2.0 m (3.3 to 6.6 ft ...