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Dual Stage Regulators

Discussion in 'CO2 Enrichment' started by Left C, Nov 17, 2009.

  1. Matt F.

    Matt F. Lifetime Charter Member
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    the swagelok part numbers are:

    stainless: ss-2c2-1/3
    brass: b-2c2-1/3

    stainless is three times the price of brass.
     
  2. herns

    herns Guru Class Expert

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    Thanks, Matt.

    Even the brass model is also expensive, $25. Do you know cheaper ones other than Swagelok?
     
  3. Matt F.

    Matt F. Lifetime Charter Member
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    clippard makes a cheaper one, but you're going to pay $$$ for shipping/handling from clippard. Also the cracking pressure poses issues if you use a ceramic diffuser.

    the swagelok is the best you can get for our application.
     
  4. barbarossa4122

    barbarossa4122 Guru Class Expert

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    Hi,

    What is the max working pressure for Victor 253b and Concoa 212 ? Thank you.
     
  5. Left C

    Left C Lifetime Members
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  6. barbarossa4122

    barbarossa4122 Guru Class Expert

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  7. Matt F.

    Matt F. Lifetime Charter Member
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    yes, my vts253b had a 0-60 psi low pressure gauge.
     
  8. barbarossa4122

    barbarossa4122 Guru Class Expert

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    Hi,

    My 253b has a 0-30psi low pressure gauge. Does this mean the regulator can provide more that 30psi working pressure. I am a little confused on this gauges and pressures stuff. Like, why my 253b has a gauge showing 0-30 and others, same model, showing 0-60 ?
     
    #1828 barbarossa4122, Jan 11, 2011
    Last edited by a moderator: Jan 11, 2011
  9. Matt F.

    Matt F. Lifetime Charter Member
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    "A" range 0-30psi
    "B" range 0-60 psi
    "C" range 0-100 psi
    "D" range 0-200 psi
    "E" range 0-400 psi (iirc)

    Are you sure you have a 253B and not a 253A?

    Why would you need more than 15-20 psi of pressure anyway? I would stay within the range of your low pressure gauge.
     
  10. barbarossa4122

    barbarossa4122 Guru Class Expert

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    VICTOR 7-0155 Two Stage Gas Regulator CGA-320 for CO2
    http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=390256930478

    From what I have read, the new atomic diffusers need around 30psi to work properly. But, I am running a Concoa at 20psi and it works good enough with 2 atomic new diffusers. The Victor I am running at 25psi.
     
  11. barbarossa4122

    barbarossa4122 Guru Class Expert

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    I did some digging and I am almost sure it's a 253A.
     
  12. Matt F.

    Matt F. Lifetime Charter Member
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    Ah, I got ya. Yes, those diffusers seem to need more than the ADA cermaic diffusers. Well, a 30 psi "A" regulator, you just proved, works with these, too.

    I forgot what model victor you had. it's that weird one model number, which I think is a predecessor of a VTS253A. The way to tell for sure is to email thermadyne directly. They will tell you for sure.

    On another note, I know I have retired from regulators, but I did recently pick up a new VTS450A-580, which I am going to build for personal use.

    I'm using my two current regulators on my 55 and my Mini-M. This regulator will be a backup.

    Here is the SGT 500 in action (on Mini-M):
    [​IMG]

    here is my VTS253A-1993 (on 55 gallon):
    [​IMG]
     
  13. herns

    herns Guru Class Expert

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    Great job, Matt!
     
  14. herns

    herns Guru Class Expert

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    I am 100% sure that is a 253A.
     
  15. barbarossa4122

    barbarossa4122 Guru Class Expert

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    Hi,

    I got an e-mail from the seller stating the same thing. The "B" is better right ?
     
  16. Matt F.

    Matt F. Lifetime Charter Member
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    I have two "A" regulators and a "B" regulator. Why would an "B" be better than an "A"?
    "As" and "Bs" are what you want for our applications.
     
  17. barbarossa4122

    barbarossa4122 Guru Class Expert

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    Hi Matt,

    I don't know, I thought "B" is more powerful. My "A" does it's job so far.
     
  18. Matt F.

    Matt F. Lifetime Charter Member
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    there is no difference in "power."
     
  19. barbarossa4122

    barbarossa4122 Guru Class Expert

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    I see. Thanks.
     
  20. S&KGray

    S&KGray Guru Class Expert

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    "more powerful" prolly means the ability to use a higher working pressure :)
     
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