Discuss Grundfos UPS3 - Central Heating Pump in the Central Heating Forum area at PlumbersForums.net
Water can flow straight through a centrifugal pump when it's not running, with only a small headloss. So flow will continue for a short while after the pump stops.When a pump is switched off does circulating water stop immediately? In other words, is there a bypass within in the pump to allow the water to slow down to a stop?
Thanks for any advice
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