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radiator leaks

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DennisV
DennisV Member Posts: 10
in THE MAIN WALL
My radiator is close but this morning was a lot water on the floor leaking from the air valve on the radiator, I open the open and close valve and stop. Why the air valve leak with the radiator was close?
Thank you!

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  • wsdave
    wsdave Member Posts: 97
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    Leaking radiator

    Hi Dennis,

    How old is the shutoff valve on the radiator? I doubt very much that the valve will close completely. This will allow steam to enter and condense inside the radiator.
    That being said - there is very little chance that the condensate can return to boiler because the valve will stop the flow of water and there is now a vacuum created by the condensing steam.

    Given enough time and enough steam - the radiator will fill with condensate and flow out of the vent.

    I know from first hand experience with a second floor radiator that I wanted to close off. Steam would get by that closed valve because I could feel the first section was warm to the touch.


    Not a pro - just personal observations.

    HTH,

    Dave
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