Figured I'd share this incase anybody else might have this issue, or it happens. Moved into this house December 2015 and we noticed there was a slight hum when you flushed the toilet. Didn't think too much about it, but a couple months later it got a little louder. Ok, I figure the toilet fill valve is bad so I replaced it. Nope still there. Over time it would do it when we turned on the shower/tub as well. Tore that valve apart, still making noise. Time after time it was so that any water being run the whole house would hum. We lived with it for over a year, but its recently got really bad. On a hunch I figured the only thing in the system that was older was the pressure regulator. Went and picked one up yesterday along with a few fittings (old one was seized in place) and lo and behold no more noise!
Here's the valve in question:
(Yes, that's a Sharkbite on there. I can solder copper, but I've never seen one fail and it's super easy to work with)
I figure with the terrible city water around here calcium built up in the old valve (like our old water heater) and over time it got worse. Wouldn't think it would be a wear and tear item, but for $70 all together valve and fittings if it starts doing it again I'll just replace it again.
Here's the valve in question:
(Yes, that's a Sharkbite on there. I can solder copper, but I've never seen one fail and it's super easy to work with)
I figure with the terrible city water around here calcium built up in the old valve (like our old water heater) and over time it got worse. Wouldn't think it would be a wear and tear item, but for $70 all together valve and fittings if it starts doing it again I'll just replace it again.