Mike Haas wrote:
I can definitely see how a tiny leak in the plumbing between the check valve and the water table would allow air to suck into the pipe due to the weight of the water pulling. I'm thinking if the check valve is bad the water pressure would just push down into the well and it wouldn't involve air at all.
It is old galvanized piping so a leak is definitely possible. I just hope it's above ground where I can get at it. I wonder if I could goop up the fittings with something to seal the air leak (if it exists)?
Mike Haasl wrote:So... Is there pressure on the input side of the pump, between it and the brass check valve? I'm not actually sure but I'd think so (once the pump turns off and is idle). So my hunch is that the leak is before the check valve.
Mike Haasl wrote: I'm a bit worried about taking it apart and then not being able to reprime the line to the pump. Would the pump be able to draw water up through the empty well pipe?
I was trying to ask if I could use a more redneck solution like pasting something on the fittings to seal up the tiny air leak.
Mike Haasl wrote:Ok, I'll listen for the whistle Based on all the conjecture, I'm pretty sure it's a pin hole leak below the check valve.
If there was a little piece of sand in the check valve, the pressure tank would be slowly pushing water back down into the well. If that was happening, there wouldn't be air in the line and the pump would be coming on randomly (I think).
Mike Haasl wrote:I came up with another possibility. Might some air be leaking through the pressure tank membrane into the water supply? If so, is there a way to identify that or troubleshoot if that's happening?
Mike Haasl wrote:
I do have new information though! I let the pressure tank empty (pump turned off) and a lot of air came out of the kitchen faucet as the pressure petered out. I tested the pressure tank pressure and it was at zero. Hmm. I turned the pump back on and it pressurized the water line (and the schraeder valve on the pressure tank). So I'm thinking it might be the pressure tank???
Travis Johnson wrote:I agree...if you have no pressure in the tank, then the bladder has a leak in it. I would start by replacing that first. That is a really quick and easy job and they only cost $50 or so.