Quote:
Originally Posted by hilltopper
Meredith, NH...
I'm having a heck of a time finding a plumber who will respond or maybe even respond without saying they're two months out.
We have air in our water lines. My guess is it's a bad backflow valve between the pressure tank and the well pump or a waterlogged pressure tank. No idea, which is why I'm looking for help.
I'm hoping for someone out there who has had to remedy/fix a similar issue or someone who has a reliable plumber to contact in the Meredith area who would diagnose and help fix this issue.
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Adding to bigdg's reply.
To check if it's waterlogged; shutoff the breaker for the pump, open a few faucets till there isn't any water coming out (your system pressure gage should now read zero), get a tire pressure gage and connect it to the Schrader valve on top of the tank. This will give you the air pressure on the top end of the tank that is separated from the lower water section by a diaphragm. This should read at least 30 psi in most cases. If zero, you're probably water logged and might have a leak in the diaphragm. Get a bicycle pump and try to pump the top section up to 30 psi and see if it holds. If it doesn't you have a leak in the diaphragm or the valve. Valve internals can usually be replaced, diaphragm, no.
Another potential (but unusual) air source.
I purchased a house in 2021 and while renovating it I noticed air in the system at times. I checked the tank as I said above and all was good. After snooping around a bit I noticed there was a small check valve in the main line coming from the tank. I believe it was used as a water treatment chemical injection point but was no longer being used. I removed it and no more air. It was leaking slightly and introducing air.