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Hot water radiator valves

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Bill_39
Bill_39 Member Posts: 69
in THE MAIN WALL
Why do hot water radiator valves have holes in the washer?

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  • Mike T., Swampeast MO
    Mike T., Swampeast MO Member Posts: 6,928
    Washer?

    Hot water radiator valves have a small hole in the "barrier" (for lack of the proper term) to ensure that some water flows at all times. This reduces the chance of freezing when you turn it "off".
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