Shallow well pump too weak?
[removed]
Posted Apr 28, 2022, 7:01 PM UTC
19
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1
Is this pump for the whole house? I have a jet well pump and large capacity pressure tank 29 gallons I think. I can take a shower, flush the toilet and maybe wash a few dishes before the pressure is to low. I wonder if air is also getting into your system.
1
No this pump is installed just for a single spigot which has an oscillating sprinkler.
1
Seems like you figured it out 1. the pump's pressure tank is not large enough to do what you want to do. 2 the source does not refill its self to handle the pump. 3. The pump its self cant keep up with the demand.
1
Do you have a check (foot) valve on the line in?
Honestly I do not know if it's installed or not. How would this effect the flow? Sorry I'm new to all of this.
Most shallow well pumps with a pressure tank need a 1-way, check valve installed on the water source side. Other wise, depending on your source pressure you can get all kinds of weird results.
Wildly fluctuating pressure, pump turning on and off rapidly, never really know. Check valves come in lots of shapes in sizes, but most look something like this.
I assume the check valve is for the pump not to lose water thus requiring priming. I'm not having that issue at all. To me it seems that once the water is spent from the 5 gallon pressured tank, the pump continues to pump too refill it, which it never does because more water is going out than pump is able to pressurize.
The valve can help with priming, but even if you attach one of those to an above ground source, like a cistern, you still need a check valve so that when it's done pumping the water doesn't flow back.
If you're drawing from a well, your water regen may just be too low.