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Identify this radiator valve

MikeH_2
MikeH_2 Member Posts: 5
in THE MAIN WALL
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Comments

  • mattmia2
    mattmia2 Member Posts: 11,610
    edited January 28

    honeywell unique valve

    The honeywell system book is in the library somewhere but I can't seem to find it now.

    HeatingHelp.com
  • HeatingHelp.com
    HeatingHelp.com Member, Moderator, Administrator Posts: 112

    Mark Honeywell invented the Unique Valve in the early 1900s. It gave him a way of connecting a hot-water radiator at just one side instead of two sides. The Unique valve opened with a quarter turn and used a baffle to direct the water into the radiator. The cooler water flowed by the hot water and entered the Unique valve on the other side of the baffle. In this video excerpt from his Classic Hydronics seminar, Dan Holohan teaches us about the origins of Honeywell’s Unique Valve and shows us how it works:

    https://youtu.be/yMezi-cnVKs

    And you can find the patent here:

    https://heatinghelp.com/systems-help-center/mark-c-honeywells-patent-for-the-unique-valve/

    Forum Moderator

    kcopp
  • EdTheHeaterMan
    EdTheHeaterMan Member Posts: 10,076

    What took you so long? Asked at 12:15 PM and no answer until 1:21M. you guys at @HeatingHelp.com are slipping. 🤣 🤣 🤣 🤣 Good job @mattmia2

    Edward Young Retired

    After you make that expensive repair and you still have the same problem, What will you check next?

    HeatingHelp.com
  • mattmia2
    mattmia2 Member Posts: 11,610

    The honeywell system book is out there somewhere too, maybe at archive.org .

  • MikeH_2
    MikeH_2 Member Posts: 5

    Thank you all. I’m guessing that it is no longer available but can the stuffing for the stem be repacked? Has anyone tried and was it successful?

  • Jamie Hall
    Jamie Hall Member Posts: 25,532

    Almost certainly can be repacked. Keep in mind that it's a quarter turn valve…

    Br. Jamie, osb
    Building superintendent/caretaker, 7200 sq. ft. historic house museum with dependencies in New England
  • mattmia2
    mattmia2 Member Posts: 11,610
    https://forum.heatinghelp.com/discussion/comment/1839229#Comment_1839229

    Does it bypass as well or does it just throttle the flow to the emitter.

    Be careful and use correct tools with what you do because it likely is extremely difficult to impossible to find a replacement although there are some modern valves that can also feed from one end.

  • MikeH_2
    MikeH_2 Member Posts: 5

    Where can I find the newer valves?

  • Jamie Hall
    Jamie Hall Member Posts: 25,532
    https://forum.heatinghelp.com/discussion/comment/1839464#Comment_1839464

    To do the same thing? I don't think there are any. That valve, however, is eminently repairable.

    Br. Jamie, osb
    Building superintendent/caretaker, 7200 sq. ft. historic house museum with dependencies in New England
    delcrossv
  • mattmia2
    mattmia2 Member Posts: 11,610

    this is what i was looking for:

    https://heatinghelp.com/assets/documents/105.pdf
    image.png
  • mattmia2
    mattmia2 Member Posts: 11,610
    edited February 1

    So there is a bypass in the valve so if the system is piped such that it needs the bypass there is not direct replacement. you would have to replace it with a valve with a lance and a bypass or take the plug out of the other end of the radiator and pipe the return to the other end and a bypass. you may not need the bypass if there are separate supply and return mains. Danfoss and a couple others make a valve with a lance to feed the radiator from one end.

    by far your best option is to carefully rebuild the old valve.

    delcrossv
  • delcrossv
    delcrossv Member Posts: 1,872

    The only thing to go bad is the stem packing. Just repack it and call it a day.

    Trying to squeeze the best out of a Weil-McLain JB-5 running a 1912 1 pipe system.
    Long Beach Ed
  • burke911
    burke911 Member Posts: 1

    mattmia2 -

    I'd love to know any other manufacturers than Danfoss that makes the lance type valve for one-end hot water feed. please let me know, thx.. db

  • Grallert
    Grallert Member Posts: 895
    edited February 6

    Oventrop. They make a single entry radiator valve. Or they used to.

    https://www.oventrop.com/ae-US/productssystems/catalogue/room-climate/hydronic-balancing-at-the-radiator/one-pipe/100

    Miss Hall's School service mechanic, greenhouse manager, teacher, dog walker and designated driver

  • Alan (California Radiant) Forbes
    Alan (California Radiant) Forbes Member Posts: 4,281

    Not common, but we even have them here in Berkeley. Truly, a wonderful, simple invention.

    0-27.jpg
    8.33 lbs./gal. x 60 min./hr. x 20°ΔT = 10,000 BTU's/hour

    Two btu per sq ft for degree difference for a slab
    Grallert

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