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Other filter media that have been introduced to the residential swimming pool market since 1970 include sand particles and paper type cartridge filters of 50 to 150 square feet (4.6 to 13.9 m 2) filter area arranged in a tightly packed 12" diameter x 24" long (300 mm x 600 mm) accordion-like circular cartridge. These units can be 'daisy-chained ...
Automated pool cleaner. 2012 was the Centennial anniversary of the first swimming pool cleaner. R.B. Everson invented the first suction-side pool vacuum cleaner. In 2002 the first handheld/extended reach, battery-powered pool and spa vacuums were finally invented. They now come in many sizes for all applications.
Sand filter. Sand filter used for water treatment. Sand filters are used as a step in the water treatment process of water purification . There are three main types; rapid (gravity) sand filters, upward flow sand filters and slow sand filters. All three methods are used extensively in the water industry throughout the world.
An Olympic-size swimming pool (first used at the 1924 Olympics) is a pool that meets FINA's additional standards for the Olympic Games and for world championship events. It must be 50 by 25 m (164 by 82 ft) wide, divided into eight lanes of 2.5 m (8.2 ft) each, plus two areas of 2.5 m (8.2 ft) at each side of the pool.
Pentair. Pentair plc ( PNR) is an American water treatment company incorporated in Ireland with tax residency in UK, with its main U.S. office in Golden Valley, Minnesota. [ 6] Pentair was founded in the US, with 65% of company's revenue coming from the US and Canada as of 2017. PNR was reorganized in 2014, shifting the corporate domicile from ...
Rapid sand filter. The rapid sand filter or rapid gravity filter is a type of filter used in water purification and is commonly used in municipal drinking water facilities as part of a multiple-stage treatment system. [ 1] These systems are complex and expensive to operate and maintain, and therefore less suitable for small communities and ...
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