From [ Ссылка ] - Learn about the maximum efficient flow rate for 2" PVC pool plumbing. Efficient flow rate for 2" pipe is approximately 55 GPM but the maximum flow could get up to around 150 GPM or more. Running your system at these high flow rates has a steep increase of friction and turbulence that cause a dramatic decrease in efficiency. When you keep the flow velocity below 6 feet per second, you reduce system losses.
