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Posted by Bill on November 15, 2007 at 22:46:32:
In Reply to: Re: How to stop the hammer ? ? posted by HeatPro on November 15, 2007 at 22:38:50:
I think there could be some oil in the water. Is there an easy way to check to find out? Thanks
: Yes. Make sure the piping is sloped properly to return all water from the pipes, as they settle into pockets over time, make sure all radiators are level, then lower the pressure to just about 1 psig so the water isn't thrown out up into the main. Make sure the main vent and all radiator vents are working properly. Be sure the water is clean with no oils.
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