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Mystery Valve

sasman
sasman Member Posts: 32
in THE MAIN WALL
Have yet to locate any literature on this valve. It is on the large running end of that riser. These are the only pictures my tech could produce. Homeowner stated radiators started getting hot until he went down and "messed" with this valve. Some type of flow control but only a guess. My suspicion is what ever was inside that valve isn't there anymore.
Thanks guys.

Comments

  • Jamie Hall
    Jamie Hall Member Posts: 24,862
    Say what? Looks to me like a pretty ordinary swing check...
    Br. Jamie, osb
    Building superintendent/caretaker, 7200 sq. ft. historic house museum with dependencies in New England
    mattmia2
  • STEVEusaPA
    STEVEusaPA Member Posts: 6,505
    edited October 2021
    I thought we answered this on the other forum. If it wasn't you it was your tech. Are you in NC?

    "Its a straight pattern weighted lift check.

    Commonly called a flow control valve.

    The little flag there can be spun outward to allow for gravity flow should a pump fail.

    Typically not needed if there is only one pump for the system.

    Its typical function is to prevent off cycle flow on system with multiple pump circuits."

    There was an error rendering this rich post.

  • sasman
    sasman Member Posts: 32
    Never got a clear answer on hvac-talk. Never got a clear answer on hvac-talk. Figured I see if these guys had any idea.
  • DanHolohan
    DanHolohan Member, Moderator, Administrator Posts: 16,600
    What Steve said. 
    Retired and loving it.
  • HVACNUT
    HVACNUT Member Posts: 6,332
    Now let's talk about that circulator. What is that?
  • Big Ed_4
    Big Ed_4 Member Posts: 3,020
    It's called a flow valve , or flow check . It prevents heat from rising up into the system when the circulator is off .

    There was an error rendering this rich post.

  • EBEBRATT-Ed
    EBEBRATT-Ed Member Posts: 16,488
    @sasman

    Just take it out and replace it with a new flow check.

    Just for your own information if you don't have DHW off the boiler and only have 1 zone you don't even need the thing

  • sasman
    sasman Member Posts: 32
    HVACNUT said:

    Now let's talk about that circulator. What is that?

    The visible one is B&G. Wasn't there, "tech" that was; for 15 + years experience lacks rather much.
    There is another pump that I think is a small grunfoss, not real sure.

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