Posted 3/28/2024 20:21 (#10684669 - in reply to #10684299) Subject: RE: Gas Powered Pump for Shallow Well
Thumb of Michigan
The head is going to be in your calculation IMHO.
Years ago I used a small trash pump, that had around 110 GPM at zero (or almost zero) head. When I put 300' of hose on it, with a 20-25' head, it was down to about 750 GPH (12.5 GPM).
Nice thing about the trash pump, was I learned about how much gas to put in, so tank I was filling would be full and have it run out of gas.