Hello,
I’m having trouble maintaining constant pressure after installing a 1/2 hp submersible pump in a 5” casing in a farm well pit that previously had a 1-1/2 hp jet pump with 1-1/4 and 1-1/2 drop pipes.
An old timer in the area always referred to it as a spring fed shallow well. The water level was at 34’, the old jet/foot valve was at 36’, and the bottom was at 38’ which I suspended the submersible pump about 6 inches above.
It immediately seems to pump with an audible surge into the pressure tank for a few seconds but then it sounds like the pump starves for 10 or 15 seconds until it surges again. But when it does surge, it adds 3-4 lbs. of pressure to a 100 gallon tank!
I have the pump on a 1-1/4 drop pipe thinking I was doing it some kind of favor, but now I’m thinking maybe it is allowing it to pump out too fast? I also installed a brass check valve immediately on top of the pump in addition to the built in flapper check valve in the pump outlet, could this be creating some kind of restrictive turbulence?
Seems like it needs to pump slower maybe?
Any thoughts would be appreciated!
Thank you.
I’m having trouble maintaining constant pressure after installing a 1/2 hp submersible pump in a 5” casing in a farm well pit that previously had a 1-1/2 hp jet pump with 1-1/4 and 1-1/2 drop pipes.
An old timer in the area always referred to it as a spring fed shallow well. The water level was at 34’, the old jet/foot valve was at 36’, and the bottom was at 38’ which I suspended the submersible pump about 6 inches above.
It immediately seems to pump with an audible surge into the pressure tank for a few seconds but then it sounds like the pump starves for 10 or 15 seconds until it surges again. But when it does surge, it adds 3-4 lbs. of pressure to a 100 gallon tank!
I have the pump on a 1-1/4 drop pipe thinking I was doing it some kind of favor, but now I’m thinking maybe it is allowing it to pump out too fast? I also installed a brass check valve immediately on top of the pump in addition to the built in flapper check valve in the pump outlet, could this be creating some kind of restrictive turbulence?
Seems like it needs to pump slower maybe?
Any thoughts would be appreciated!
Thank you.