I had a pressure reducing value replaced because I had water discharging from my hot water heater. Now I have an extremely loud whistling noise (train horn) coming through the entire house and vibration. The noise and vibration appears to be coming from the new pressure reducing valve. Do I need to buy another pressure reducing valve? Or should I check the pressure first and record my readings then proceed from there. The noise has gotten progressively worse. I have a Watts N55B M1 ¾” installed with a union fitting then threaded onto cooper pipe. Any suggestions would be helpful.
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