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Constant bps

Discussion in 'CO2 Enrichment' started by barbarossa4122, Jan 16, 2011.

  1. barbarossa4122

    barbarossa4122 Guru Class Expert

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    Hi,

    I have a q about bps:
    My co2 is on a timer for 8 hrs on a timer at 3bps. I the morning when it starts again I only get about 2-2.5 bps and I have to adjust the Fabco nv55. I think something must be wrong b/c I was under the impresion that you do not have to adjust the nv every day. After I adjust the nv to 3 bps it stays like this through out the entire 8 hrs co2 cycle. I appreciate any input/advice on this.

    Edit:
    This is a dual manifold set up and the same thing happens with both Fabco nv 55.
     
    #1 barbarossa4122, Jan 16, 2011
    Last edited by a moderator: Jan 16, 2011
  2. dutchy

    dutchy Plant Guru Team
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    I guess the system pressure is too low. (not the bottle pressure) Turn it up to 7 to 10 psi, that should do it.

    regards,
    dutchy
     
  3. barbarossa4122

    barbarossa4122 Guru Class Expert

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    Hi Dutchy,

    I have it at 20 psi which is the max it goes. I did get advice to set the working pressure again but, this time with the solenoid unplugged also to tighten the set allen screw on the Fabco a little more.
    Did this, did a few tests and it looks like it's working fine for now. Darn co2:)
     
    #3 barbarossa4122, Jan 16, 2011
    Last edited by a moderator: Jan 16, 2011
  4. Biollante

    Biollante Lifetime Charter Member
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    Reinforcements to the Front

    Hi barbarossa41(6?)22,

    While it could be the needle valve, another candidate is the tubing, especially at higher pressures. :)

    Consider “pressure rated” or reinforced tubing. :gw

    I have seen that much of the wonky CO2 stuff goes away with pressure rated tubing. I have been told by a beverage company type, runs greater than 2 feet (61 cm) should be reinforce even at low pressure.

    Biollante
     
  5. barbarossa4122

    barbarossa4122 Guru Class Expert

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    Hi Bio,

    Thanks for helping in the co2 war effort:)

    I use co2 resistant tubbing. Is there better one that you know of ? If yes, where can one buy it from ?
     
  6. Biollante

    Biollante Lifetime Charter Member
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    Where For Art Thou LeftC?

    Hi barbarossa41(6?)22,

    I cannot find my tubing link. :eek:

    I got the reinforced tubing through US Plastics :), LeftC usually ninja’s me before I can answer these questions. :eek:

    Biollante
     
  7. barbarossa4122

    barbarossa4122 Guru Class Expert

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    Hi Bio,

    OK, I'll check US Plastic. Thank you.
     
  8. Matt F.

    Matt F. Lifetime Charter Member
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    anything downwind of the needle valve will/can alter bubble rate. A check valve, for instance, can affect bubble rate depending on the craking pressure.

    Leaks can alter bubble rate, too.

    tubing is, as mentioned, is also a culprit.

    The big one is the diffuser, too.

    All are related to back pressure and the depth of the diffuser in the tank.
     
  9. rockhoe14er

    rockhoe14er Prolific Poster

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    i am having this same problem with my victor regulator and fabco needle valve. I have to keep adjusting it when it turns on again the next day. I can't figure out why either.
     
  10. dutchy

    dutchy Plant Guru Team
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    Maybe you should consider a pH controller.

    regards,
    dutchy
     
  11. Jim Miller

    Jim Miller Lifetime Charter Member
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    I suspect this could be caused by a worn or dirty seat in the regulator. The regulators we typically get on Ebay are second hand...for reasons unknown.

    We don't refurbish and test them we just change the external fittings.

    Jim
     
  12. rockhoe14er

    rockhoe14er Prolific Poster

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    my regulator was just rebuilt so it should be in perfect working order. I did however add on another check valve to prevent back flow because my first one was a cheep petco one. so i'm not sure if this is the culprit.
     
  13. hbosman

    hbosman Guru Class Expert

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    double and triple check for leaks. I had the same symptom using a Victor and inline NV-55. I would adjust it and the next morning when the solenoid kicked on, the bubble rate was much lower until I readjusted the NV. It turned out to be a loose hose barb on the NV-55. It's been rocksteady over since. I never have to touch the needlevalve, even after swapping gas cylinders. I adjust the working pressure back up to 22 psi and everything is good to go. I do use clippard CO2 tubing that I bought from GLA.
     
  14. barbarossa4122

    barbarossa4122 Guru Class Expert

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    Hi,

    I found out why, yesterday...........I had a leak coming from one of the gauges. I tided them both up real good now. Than was the only place I did not look for leaks and I did look about 10 times. You must have a leak b/c mine is working perfect right now. Oh, yeah, GLA tubbing is very good.
     
  15. rockhoe14er

    rockhoe14er Prolific Poster

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    this morning i did unscrew the barbs on my inline nv-55 so when i get home today i'll see if that worked. I guess i'll try some of the bubble test.
     
  16. barbarossa4122

    barbarossa4122 Guru Class Expert

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    I am using teflon tape now b/c I think the paste is not that good.
     
  17. rockhoe14er

    rockhoe14er Prolific Poster

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    so Bararossa,

    After you fixed your leaky gauge did your bps stay consistent?
     
  18. barbarossa4122

    barbarossa4122 Guru Class Expert

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    Oh, yes. Lol, after I lost almost half if my 10lb cylinder. It's OK, I have a full 5lber standing by. Co2 is cheap here, I just don't like the 20 min drive to get there. I hate NYC traffic and everybody is in a constant hurry. Bunch of maniacs, lol.
     
    #18 barbarossa4122, Jan 19, 2011
    Last edited by a moderator: Jan 19, 2011
  19. rockhoe14er

    rockhoe14er Prolific Poster

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    were your gauges constant on your regulator or were they changing?
     
  20. barbarossa4122

    barbarossa4122 Guru Class Expert

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    The high pressure was dropping little by little and the low pressure dropped from 20 to 18psi.
     
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