Sequence makes self priming pumps in the larger sizes (1/3 HP and above). Not sure about 1/4 HP or smaller. 3 of our sequence pumps are above water level, and 2 below. The above water level pumps have a vertically placed one way check valve in line just above water level as close as I could get to that water level in our situation. Whew Im dizzy
I would have preferred the check valves below water level. We placed a hose bib in line above the pump to fill with water to the check valve, turned on the pump and volia... we have water flow. The sequence pumps we used above water level are the self priming type, but I think this would have worked anyway if they weren't. Just wanted to be doubly sure. Don't think it matters if they were sequence for this to work.
