Likewise, people ask, what is a weir valve? Many robotic pool cleaners are comprised of some brushes that internally rotate to help to dislodge any filth or algae. Bestway Automatic Pool Cleaner Vacuum Sucker Cordless With Pole Rechargeable In 2021 Pool Cleaning Automatic Pool Cleaner Bestway All robotic pool cleaners use efficient electric motors that create suction and at the same time provide enough power to propel them. How does a pool cleaner work . Weir valves a weir valve is a type of diaphragm valve in which the flow passage includes a weir, or a notch with a horizontal edge through which a substance flows. These brushes are powered by small wheels or tracks. A pool vacuum consists of a vacuum head, a vacuum hose and a telescopic pole [source: This takes quite a bit of circulation away from the pool filtration system, and pool returns, which is necessary to keep the pool crystal clear. But really, how does a swimming pool work? The computer in the cleaner learns th...