I would like to see BRS do a video series on pumps.
A real test of head height with different sizes of plumbing and say routing.
Most everyone will have a minimum of 5 feet head height and a few 90s and maybe a 45 to a lockline fitting.
In my thought only the small and large pumps from the same manufacturer need to be tested. No need to go through all the sizes.
Just need the pumps, three sizes of plumbing in the same configuration.
Also need vertical runs to determine actual head height.
Premeasured 50 gallons of water and a stop watch.
But they have to test and compair with the manufacturers specifications.
That would be a real eye opener for the majority.
Bet the manufacturer's would not appreciate this, and BRS may feel some pressure.
A flow meter and a pressure gauge is all you would need to test all sorts of configurations