Re: Knocking in pipes after water heater replacement
Posted by jimbo on May 15, 2004 at 21:01:10:
In response to Re: Knocking in pipes after water heater replacement
: Check with your installer or A.O. Smith to see if your model has heat trap nipples. A while ago Rheem had so much trouble with noise in their ball-check nipples that they replaced them with rubber flapper types. A ball check could explain your noises.


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