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Replacement flow control valve?

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nz
nz Member Posts: 125
in THE MAIN WALL
Still learning about hot water heat, only been in this house for 10 months. I fixed a lot of bleeder valves over the winter but there was one baseboard that wouldn't heat up. I bled all the air, and the supply pipe was warm but the radiator never heated up unless I bled a lot of water out too (just as an experiment.)

I think this valve is frozen shut, and despite all my attempts to open it, they have failed.  I think this is a flow control valve, it had a knob on it at one point I'm sure like the rest of the house. 

I'm thinking about replacing it with this danfoss double solder TRV. I installed 15 TRVs at my old house that had steam successfully, but given my inexperience with hot water I thought I would check with the forum first.  Is this Danfoss valve (plus the operator) a suitable replacement? 

https://www.supplyhouse.com/Danfoss-013G8044-3-4-Straight-Thermostatic-Radiator-Valve-Double-Solder-Union

Thanks,

Nick

Comments

  • EdTheHeaterMan
    EdTheHeaterMan Member Posts: 10,715
    That valve Danfoss valve looks fine.

    Here is a booklet that may help you understand Hot Water systems
    http://media.blueridgecompany.com/documents/ZoningMadeEasy.pdf

    Edward Young Retired

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

    nz
  • hot_rod
    hot_rod Member Posts: 25,309
    I don’t recognize that as a TRV, probably a manual valve of some sorts. Although it looks more engineered than a globe or balance valve?

    If you put a TRV there, any baseboard in series with that one will be regulated also, by the temperature at that location.
    Bob "hot rod" Rohr
    trainer for Caleffi NA
    Living the hydronic dream
    EdTheHeaterMan
  • Alan (California Radiant) Forbes
    Alan (California Radiant) Forbes Member Posts: 4,498
    The stem probably stuck out of the baseboard cover with some kind of handle on it. TRV? I have no idea what that capped port is for. Adjustment?
    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
  • mattmia2
    mattmia2 Member Posts: 13,374
    You might open it up and see what's inside. It should unscrew.

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