Can't figure out how to fix rattling pipes
Well, this forum has been helpful in making some progress with rattling pipes, but so far the issue has not been determined.
The pipes rattle at the pipe were the water enters the house, near the water shutoff and the pressure regulator.
It doesn't happen at any faucet in particular. But if it is noisy, then we can open another faucet at the same time and it stops. When all faucets are off, it also stops.
I have secured the pipes much more, but the rattling continues.
Also, if I shut the water off, drain all the water (and air) from the pipes, and turn the water back on, it fixes it, but only for a while. This fix only lasts for maybe a day before its back to NOISE. The noise sounds like a continuous rattling/vibrating noise and keeps going until the faucet is turned off. It's pretty loud, as you can hear it throughout the entire house.
I would like to figure out what is going on before calling around for a plumber. Any ideas?