Wenzel Pressure Lantern adjustment knob broken ?

Discussion in 'Pressure Lamp Discussion Forum' started by emptyfolder, Jul 24, 2025.

  1. emptyfolder United States

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    Hello fellas. I bought this Wenzel lantern today, and it has been used once some years ago. It is in, what looks like, mint condition, but I wonder is the control knob supposed to overturn ? Shouldnt it be like a knob for water hose - open few turns and then stops rotating and turn to close until you can not anymore.
    I was skeptical, so I used plyers to try and tighten the nut, but it wouldn't turn any more. I did scratch in the process, but this is least of my concerns at the moment. The instructions say, that the Arrow of the knob needs to be pointed Up, but I doubt that this is enough.

    I made a video too, that you can see here:
     
  2. JEFF JOHNSON

    JEFF JOHNSON United Kingdom Subscriber

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    Welcome aboard!:thumbup:
    That lantern runs on paraffin / kerosene only and that knob just operates the pricker rod, it is not a positive shut off valve.
     
  3. leo

    leo Germany Subscriber

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    How to use a Wenzel/Petromax:
    manual
     
  4. ROBBO55

    ROBBO55 Subscriber

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    Welcome to CPL @emptyfolder
    The gland nut behind the control knob shouldn't turn as shown in the video. It compresses a seal on the shaft and prevents fuel leaking out at that point. Tighten it using the correct size spanner.
     

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