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hammering radiators

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louie_2
louie_2 Member Posts: 5
in THE MAIN WALL
One pipe steam,quite a few of the radiators hammer especially when the boiler has not been running for a while and the radiators are cooling down.thank you for your help..

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  • Steamhead
    Steamhead Member Posts: 16,861
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    Banging

    is cause by water and steam meeting up where they shouldn't.

    First, check to see if the shutoff valves are completely open. They should be.

    Then, put a level on each radiator- they should pitch back slightly toward the shutoff valve. Install shims under the air-vent end if needed.

    These moves should stop the banging. If they don't, the problem may be elsewhere and is echoing up into the radiators.

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