Shallow Well Pump Pressure

Old 04-25-16, 02:01 PM
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Shallow Well Pump Pressure

I have a 1hp shallow well pump hooked to my sprinkler system. Installed the pump beginning of last year. Connected everything back up to start the sprinkler system this year and am having pressure problems. The pump will build pressure up to 40psi (which is where it's supposed to build up to for the sprinklers to operate) but when I open the valve to the sprinkler lines or even the water spicket, PSI drops to about 12 and stays there. Everything worked fine last year. Not sure what the issue is. Any help would be greatly appreciated.
Old 04-25-16, 04:52 PM
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Do you have one pipe going to the well or do you have two pipes connecting the pump to the well?

Regardless, it sounds like you have a restriction somewhere. The pump is able to generate pressure but something is restricting the flow so when water is being used the system pressure drops.

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