Well pressure climbs to over 125 psi!!!! Help

[tinysparky]

Why would my pressure be so high?


I have a 17 gpm grundfos pump about 128' in my well. Coming out of the well casing is a 1.25" pipe that I flow into a series of spin down filters and 3 big blue filters. It empties into an open cistern. So no pressure tank

After I saw the pressure climb to over 125 psi I turned off the well pump and removed the filters in all of my filters.

Granted I am going from a 1.25 well pipe to 1" for all of my filters, but why such a high pressure? All of the filters...which are new....have a higher flow rate then the pump. Thoughts?



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[BillK]

Is this a completely new setup or has it worked ok in the past and suddenly has a rise in pressure.

Defective gauge ? Dont rule that out even if it is new.

Even though the filters have a good flow rating the fittings and adapters before them might not. Or the filter flow rate might be at a much lower pressure than the pump is ?

What are the specs on the pump ?

 

[OccupantRJ]

New filters means: Remove one filter at a time. Catch water in a bucket, or replace housing without filter. Run pump, read pressure. Move to next, one at a time. Process of elimination. Filter may have collapsed.

 

[tinysparky]

New filters means: Remove one filter at a time. Catch water in a bucket, or replace housing without filter. Run pump, read pressure. Move to next, one at a time. Process of elimination. Filter may have collapsed.

Found it. I had removed all of the big blue 20" filters. But left the 52 micron and 32 micron screens in. The 32 micron screens was filled with black sand. Ugh. Once removed, pressure dropped to 25 psi.

New setup. New filters. New pressure gauges.


Any thoughts on how to remove black sand??

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[log man]

You could put in a y-screen filter ahead of the existing filter, easier to clean. Also, your pump may be set a couple feet too deep. If you raise it off the bottom, might eliminate the issue.

 

[LXCam]

Use the largest canister you can get without a filter. Extend the inlet side down halfway between the top and bottom. Most of that sand will gravity drop and collect in the bottom. But like log man pointed out you need to raise the pump, all that sand is going to wear out the impeller.

Here's a inexpensive one that would be easily monitored.

https://www.amazon.com/dp/B01JIRLRXY/?tag=atomicindus08-20

Or if you want a better solution:

https://www.irrigationking.com/2-pl...kxoCUmrNbbor7CoZKAegtQaafcWxNiEoaAhvTEALw_wcB


Either of these will drastically reduce your filter maintenance.

 

[thammel]

If you have black sand, you might need a Lakos Sandmaster centrifugal "filter" as the first thing - even before the holding tank. This removes sand and silt and has a purge system so you can empty it easily. Not cheap but works really well.

Tom