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Water hammer

khills2
Member Posts: 8
After my radiators finish heating a banging occurs in my ceiling (between 1st and 2bd floor) anywhere from 20 min to an hour after boiler turns off. It’s the same spot in ceiling each time. I know the radiator that the piping goes to.
Any ideas on how to stop this water hammer?
0
Comments
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The water can't hammer if it can drain freely. Sounds obvious enough, but... so you need to figure out what might be pitched in such a way that the water can drain.
However, that much delay almost sounds as though it might be an expansion -- or perhaps more accurately, contraction -- noise.Br. Jamie, osb
Building superintendent/caretaker, 7200 sq. ft. historic house museum with dependencies in New England0 -
With that assumption or contraction, would I need to put some type of padding around the pipe to muffle the sound?0
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