Bernzomatic TX-550L Propane Fitting

Discussion in 'Stove Forum' started by Ian_07, Jul 17, 2026.

  1. Ian_07 United States

    Offline
    Joined:
    Jul 17, 2026
    Messages:
    2
    Location:
    Atlanta
    Just picked up this old Bernzomatic single burner. The only issue is that I can't figure out how to attach the bottle attachment to the stove. It has female threads on the end, but there's nothing on the stove to screw it onto. There's just a hollow pipe that goes to the burner. Am I missing a piece? 20260717_141038.jpg 20260717_141023.jpg 20260717_141051.jpg
     
  2. HunterStovie United States

    Offline
    Joined:
    Mar 11, 2015
    Messages:
    1,106
    Location:
    Town of Parker, Colorado, USA
    What do the instructions on the lid say??
     
  3. ArchMc

    ArchMc SotM Winner Subscriber

    Offline
    Joined:
    Jul 25, 2004
    Messages:
    4,703
    Location:
    Mojave Desert, California
    It looks like the tube on the valve may slip-fit into the tube on the burner, but Definitely check the instructions.
     
  4. Daryl

    Daryl United States SotM Winner Subscriber

    Offline
    Joined:
    Dec 10, 2019
    Messages:
    1,660
    Location:
    Sunny SoCal Grand Terrace
    Maybe a collar of some type missing? found this in gallery here
    Mine has a rubber hose with connectors on each end and different looking burner. Maybe if you keep pressure down and rubber hose can connect the two? Long shinny propane tank stores inside. Measure case width and see if you can get tank that fits. Some brands are 1/4-1/2 inch too tall to fit. good luck
     
  5. Ian_07 United States

    Offline
    Joined:
    Jul 17, 2026
    Messages:
    2
    Location:
    Atlanta
    The instructions just say "Insert valve tube into burner opening at side of stove securely." But it doesn't specify how to do that haha

    The tubes do fit together, but wouldn't this leak? They are about the right size to slide the attachment into the stove, but it still wobbles a bit from not having a tight fit

    Also, what is the purpose of this hole in the tube? It seems like gas would just flow out of it freely. When I insert the attachment into the side of the stove, it ends right before that hole


    sIMG_20210507_152821411.jpg
     
    Last edited: Jul 20, 2026
  6. HunterStovie United States

    Offline
    Joined:
    Mar 11, 2015
    Messages:
    1,106
    Location:
    Town of Parker, Colorado, USA
    @Ian_07

    The holes allow air into the tube to mix with the propane. Without them the flame would be yellow and weak.
     
  7. Jeopardy

    Jeopardy Subscriber

    Offline
    Joined:
    May 26, 2012
    Messages:
    2,000
    It looks like the pipe on the side of the valve is long enough to be close to if not beyond the tube on the inside of the stove. The air hole in the latter is indeed to allow air be drawn in by the flowing gas and mix with the fuel before it gets to the burner head. Very much on the same principle as a Bunsen burner in a traditional chemistry lab. In this application the ring that adjusts the fuel / air mixture in a lab burner would be a bad thing. Therefore the fit between the two only needs to be tight enough to stop the gas bottle falling away from the side of the stove in use.
    Regards
    John
     
  8. Daryl

    Daryl United States SotM Winner Subscriber

    Offline
    Joined:
    Dec 10, 2019
    Messages:
    1,660
    Location:
    Sunny SoCal Grand Terrace
    Take it outside and give it a go. Arm hair and eyebrows will grow back quickly!
     
  9. ajvuik

    ajvuik Subscriber

    Offline
    Joined:
    Aug 4, 2007
    Messages:
    1,012
    Location:
    Netherlands
    The fitting of the regulator into the tube works about the same as with Coleman suitcase stoves. Where the generator goes into the mixing chamber is not a tight fit, but still functions. Venturi effect is an interesting thing :lol:
    And Coleman does warn about not using the stove inside, I guess that also counts for this one.
     
  10. Oldhenry1 United States

    Offline
    Joined:
    Mar 29, 2021
    Messages:
    167
    Location:
    Puget Sound, WA U.S.A.
    My TX-550L valve is a slip fit, it has some wobble to it.