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Fabco NV-55 at fault?

Discussion in 'CO2 Enrichment' started by agentkhiem, Oct 28, 2010.

  1. agentkhiem

    agentkhiem Junior Poster

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    I've finally got my pressurized setup up and running tonight, but I ran into a problem with the Fabco needle valve. This is my first time using one of these, and I'm not sure how to fine tune it. I have it clockwise all the way to the right with a working pressure of 15 psi, but I'm not able to get the bubble rate to be anything less than 2 bubbles a second. Turning it all the way to the left doesn't seem to change the rate of flow either. I thought it was supposed to be "bubble tight". My needle valve already came with the knob installed, but it only does about 3 full turns. Any ideas?

    Victor VTS 450 D - Burkert 6013A 1/8" - Fabco NV-55

    EDIT: Issue has been resolved. Since my NV-55 came with the knob already attached, somehow the two small screws were preventing the needle valve from closing entirely. I'm able to achieve a much more precise output after loosening the two screws.
     
    #1 agentkhiem, Oct 28, 2010
    Last edited by a moderator: Oct 29, 2010
  2. barbarossa4122

    barbarossa4122 Guru Class Expert

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    Hi agentkhiem ,

    Glad you posted this in case others run into the same problem. Thanks.
     
  3. agentkhiem

    agentkhiem Junior Poster

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    Yeah, that's something that should be checked, especially they advertise that it's capable of full 9 turns.
     
  4. barbarossa4122

    barbarossa4122 Guru Class Expert

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