Ken Birrenbach
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I returned from a months absence in early February, I live in Wisconsin, and discovered that the pipes in my rambler style house would rap/hammer violently whenever the water was turned on whether it was a water faucet, shower, toilet flush, etc. The noise stopped when the water was shut off. I replaced a Watts pressure regulator model N35B U with a Watts model N55 BU M1. The hammering stopped, but now I have a medium pitched hum whenever the water is turned on anywhere in the house. I tried raising the pressure setting and reducing it, also. Neither adjustment seems to have a noticeable affend on the hum. I have tried to reach the Watts help line but cannot access the web site. Can you give me any ideas what to try next? Thanks for your help. Ken