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James mo
James mo Member Posts: 21


  • DanHolohan
    DanHolohan Member, Moderator, Administrator Posts: 16,487
    Honeywell Unique valve

    You'll find it in the Heating Q&A section under Gravity Hot-Water Heating. Also in the Library (the original literature is there).

    It pays to wander off the Wall.
    Retired and loving it.
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