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On Nov 23, 7:50 pm, Bob wrote:
wrote:
I have some sort of strange problem. I know little about plumbing, so
I have no idea what to do and I'd prefer to avoid calling a plumber. I
will if I have to, but I'd like to try to troubleshoot it myself.

Beginning sometime this summer, once in a while the pipes in my house
would vibrate for a bit. This was usually when I had the water running
outside and would then start some laundry or something like that. The
vibrating was usually short-lived and it didn't happen very often. For
some reason, the problem has gotten rapidly worse this past week...

Have you measured the incoming water pressure? It sounds like you may
have a pressure regulator that's wearing out, or the pressure is
otherwise increasing.

I haven't measured the water pressure. I wouldn't even know how,
honestly. Maybe for now I'll just turn down the valve coming into the
house to the point below which the vibration starts. Then I suppose
I'll have to call an expert in and have them check it and replace that
regulator, if necessary.

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Turning down that valve will likely cause all kinds of water problems due to
lack of sufficient flow volume.

The problem could be as simple as air filled stub "dampers" that have lost their
air. Draining the pipes, then turning the water back on would re-fill the stub
with air. It's a simple test if that's the problem. Turn off the water heater,
turn off the water, open all faucets for 5-10 minutes. Close all faucets, and
turn the water back on. Turn on the water heater after running each faucet to
clear air from the pipes.

The simplest way to check the pressure is with a pressure gage that attaches
onto a hose faucet.