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I actually have a question about air/co2 tubing ID/OD

Discussion in 'CO2 Enrichment' started by Matt F., Jan 26, 2011.

  1. Matt F.

    Matt F. Lifetime Charter Member
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    I've noticed that a majority of the air/co2 tubing is either 3/16" ID or 1/4" ID.

    When choosing a hose barb (which I am less familiar with, since I've used JBJ bubble counters), which size should I use?

    Should choose a barb slightly larger than the ID of the tube?

    WHich is more common?

    What size ID is the ADA tubing? 3/16"? The tubing looks 1/4" OD.

    also anyone know what size hose barbs jbj bubble counters have?

    Thanks...
     
    #1 Matt F., Jan 26, 2011
    Last edited by a moderator: Jan 26, 2011
  2. Tug

    Tug Lifetime Charter Member
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    Funny, but I've been wanting to know the same thing.
     
  3. Gbark

    Gbark Guru Class Expert

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    Not sure what a hose barb is!

    But all your co2 fittings should have an OD slightly larger than the ID of the tubing you use. Or even better get tapered fittings;)
     
  4. Left C

    Left C Lifetime Members
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  5. Left C

    Left C Lifetime Members
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    It's not like a tiger barb or a rosey barb. It's a bit different.
     
  6. Gbark

    Gbark Guru Class Expert

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    The Barb that let the fish get away.

    Hose Barb, ok i googled it,

    So as i said dont worry about wall thickness or OD just concentrate on ID if you are usng Hose Barb fittings.

    I should mention that wall thickness and OD is important when using push fittings e.g ADA stuff
     
  7. Matt F.

    Matt F. Lifetime Charter Member
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    Majority of the stuff like ADA is 4mm/6mm (ID/OD)

    4mm/6mm = 3/16" and 1/4"

    JBJ bubble counters have a 4mm hose barb according to aquatic magic.

    There are tubes with 1/4" ID and 1/8" ID, too.

    You can get co2 resistant tubing in virtually any size. Most common are the ones listed.

    YOu can't go wrong with 4mm/6mm
     
  8. Left C

    Left C Lifetime Members
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    The 4/6mm tubing from MarineDepot doesn't stretch like most tubing that we use. It is rather stiff compared to Clippard or Tygon Lab tubing. I have to put the MarineDepot tubing in boiling water for a bit so that it will slip over whatever I want it to fit.

    4/6mm tubing is 0.1575" x 0.2362"
    & 3/16" x 1/4" is 0.1875" x 0.2500"
    So, 4mm is 0.03" smaller than 3/16" and 6mm is 0.0138" smaller than 1/4".

    A closer analogy for 4/6mm tubing would be 5/32" x 1/4". 5/32" is a tiny bit smaller than 4mm and 1/4" is a tiny bit larger than 6mm.
    FROM: http://mdmetric.com/tech/cvtcht.htm
     
  9. barbarossa4122

    barbarossa4122 Guru Class Expert

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    Hi Left C,

    Which tubbing would you recommend ? Thanks.
     
  10. Left C

    Left C Lifetime Members
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  11. barbarossa4122

    barbarossa4122 Guru Class Expert

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    Thanks Left C. I bought some dosing bottles from US Plastic..........didn't know they have co2 tubbing.
    I have just ordered 20 ft.
     
    #11 barbarossa4122, Feb 4, 2011
    Last edited by a moderator: Feb 4, 2011
  12. barbarossa4122

    barbarossa4122 Guru Class Expert

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