Re: Humming gas water heater
Glad you fixed THAT problem, but I do have one question: is there a thermal expansion tank on the incoming line to the water heater?
Without that, as the water is heated, there may be no place for the expanded water to go. Typically this results in the PRV opening slightly and allowing a trickle out, but if you've got a weak pipe somewhere it could cause it to rupture.
Now that's not entirely true: if water can backflow from your plumbing into the public system (backwards through the water meter), then there's someplace for the expanded water to go. Or, if you're on a private well, it may be able to back up into the well pressure tank.
Either way, it may be advisable to install an expansion tank. If your water pressure exceeds 80 PSI, I'd recommend installing a regulator. Excessively high water pressure can damage faucets, toilet valves, and especially solenoid valves like in your dishwasher and clothes washer. If you do install a regulator, then you'll for sure need an expansion tank, because the regulators don't allow backflow.
The "Senior Member" designation under my name doesn't mean I know a lot, it just means I talk a lot.I've been a DIYer since I was 12 (thanks, Dad!). I have read several books on various home improvement topics. I do not have any current code books I can refer to. I was an apprentice plumber for two years.