Over several weeks, I would hear a high pitch noise after flushing some of our toilets in my house or using certain sinks. I checked my PSI - 120 to 140 psi. I changed out my PRV - noise stopped but pressure still too high. Valve installed correctly with the arrow in the right direction. I was told to check my hot water expansion tank - checked it and it was filled with water so I changed it out and set the new tank to 60 psi. I was all excited my problem was solved - unfortunately not. Pressure still reading at 120 to 140 PSI. Besides the pressure still being too high, I
notice the pipe coming into my basement right before the PRV vibrates for several seconds when a toilet is flushed or water turned on. I am baffled - what should I do. Change out the new PRV to see if it is defective??
Also, do I need to worry about my new expansion tank bladder rupturing since my pressure is still too high?