I have two wells , deep well submersibles pumps (220V, 1/2hp) feeding a single 35gal pressure tank. Because the flow on each well is low (2gpm) I want to connect up both of them.
To do this I installed a Square D "pumptrol" with Low water cuttoff...feeding a check valve on each supply. These feed into the tank. The idea of the the seperate controls and check valves is so that if either of the wells run dry it will cut out and it can't be back-fed off the other well.
All was good until it goes to cut-off at the high pressure setting. At that point it clicks on and off repeatedly. If you hold the lever on the control you can feel it responding to surging water pressure.
I think what is happening is that the check valve is blocking the cushioning effect of the surge tank. When it cuts out ... the check valve slams shut and the water in supply (pump side) falls back enough to cause enough of a pressure drop to trip the pump back on ...and this goes on over and over.
Do I add a pressure tank on the supply side of each?
Get rid of the check valves and take my chances on burning out a pump when a well runs dry?
Put another check valve before the pressure switch to maintain pressure before and after the pressure switch?
Is there another way to connect them both up?
help
To do this I installed a Square D "pumptrol" with Low water cuttoff...feeding a check valve on each supply. These feed into the tank. The idea of the the seperate controls and check valves is so that if either of the wells run dry it will cut out and it can't be back-fed off the other well.
All was good until it goes to cut-off at the high pressure setting. At that point it clicks on and off repeatedly. If you hold the lever on the control you can feel it responding to surging water pressure.
I think what is happening is that the check valve is blocking the cushioning effect of the surge tank. When it cuts out ... the check valve slams shut and the water in supply (pump side) falls back enough to cause enough of a pressure drop to trip the pump back on ...and this goes on over and over.
Do I add a pressure tank on the supply side of each?
Get rid of the check valves and take my chances on burning out a pump when a well runs dry?
Put another check valve before the pressure switch to maintain pressure before and after the pressure switch?
Is there another way to connect them both up?
help