ttracy
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Well the post header says it all. Installed a Goulds 10gpm pump a little over a year ago (along with an Amtrol/Well-x-trol 44 gal pressure tank). Everything ran great from day 1, until we went away for a few days back in July. Now, when the pump starts for the first time after a long sit (overnight or 3+ hours) there is a LOUD whirring/"power-stearing belt too tight" noise coming from the tank. Watching the pressure gauge, there is no pause on the cut-in, cut out is right at 60 psi. Noise is loudest at pump startup, then quiets as the tank fills. Our last pump died after 5 years because a) it was a jacuzzi pump, but mostly b) the pressure tank was undersized. When our last pump died the noises came from the pump (bearings?!) and it was clear as day that it was the pump making the "I'm going to blow" sounds. These noises seem to be coming from the pressure tank. I pulled the pump yesterday just to check a few things: no debris stuck between motor and pump, no splits in the 1" plastic pipe, no leaks at the pitless adapter, brass check-valve at top of well not leaking. With the cap off the well (30' from house) and listening down the casing - only heard low 'normal' hum when pump started. But, from OUTSIDE, I could hear the pressure tank screaming inside the basement (coming through the wall, not through the casing). Connections inside the house - 1" pvc to 10gpm dole vale to brass check-valve to pressure tank T. The dole valve has a rubber orafice - so I don't think the noise is coming from there. The brass check valve vibrates with the noise but I don't think it's coming from there. Any suggestions? Is there something metallic inside the pressure tank that would vibrate causing the noise? The bottom of the tank acts like a bell - really sends the noise out.