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Bell & Gossett Flo Control Valve SA-1 - Inside Noise

ZBoilerZBoiler Posts: 11Member
My house is heated with hot water. Lately, I started hearing a scratching noise inside of Bell & Gossett flow control valve SA-1 that resonates slightly through piping. What could be the cause and should I be concerned about it, especially, if the house won't be attended for the next month or so?


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