Fire extinguisher CO2

Discussion in 'Tutorials' started by Themuleous, 11 Sep 2007.

  1. PedroB

    PedroB Member

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  2. zozo

    zozo Member

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    For anyone worrying about problems regarding the riser tube in a FE and a froozen regulator. Which is relatively unlikely to happen, because of the regulator is just letting a tiny bit out. I tested it first with only a needle valve (without regulator) which has a bottle adapter on it and it didn't spray liquid Co2, even a fully opened needle valve wasn't enough to get liquid co2 out. Used it for a few days like that without any isues because the regulator hadn't arived yet. Well not totaly true, the issue was can't realy regulate the bubblecount, because the presure in the bottle drops and the bubblecount changes. But there were no strange dangerous side effects besides of that.

    This is the needle valve (Old laboratory equipment)
    8X79mQN.jpg

    But if you realy worry, find yourself a set of clips to hang the FE to the wall, hang it upsidedown, then the riser tube will become a fall tube :) problem solved. Than you have to stand on your head to read the clocks.. But actualy there is no problem.. :)
     
  3. Daneland

    Daneland Member

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    Next item on my shopping list...
     
  4. LindzG

    LindzG Newly Registered

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    Hi all! I would like to know if I can use a medical O2 regulator on a co2 fire extinguisher? What are the consequences?

    Sent from my GT-I9190 using Tapatalk
     
  5. tim

    tim Forum Moderator Staff Member

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    Don't think it will connect to a co2 fire extinguisher.
     
  6. zozo

    zozo Member

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    Tim is right, it just wont fit Co2 bottle has W21,8x1/14" external thread..
    O2 bottle has G5/8" internal thread. :)
     
  7. ian_m

    ian_m Global Moderator Staff Member

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    Also CO2 pressure is 55bar, O2 can be upto 300 bar.
     
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  8. zozo

    zozo Member

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    Doesn't really matter for the regulator i geuss. Not totaly sure. In the welding industry the co2 regulator is also suitable for argon, which has 200 bar.. i'm using an old Co2/Argon welding regulator it's manometer goes up to 300 bar. Used oxygen for gass welding in the past and these are filled at 150 bar.. :) I believe scuba and other breathing bottles go up to 300..
     
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  9. LindzG

    LindzG Newly Registered

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    Thanx for the replies guys! But I'm not sure I quite understand?
    You say co2 pressure is 55 bar and 02 is 300 bar, so the O2 regulator won't work on the co2 bottle cause the pressure is too low @ 55 bar, that's besides the connection?

    Sent from my GT-I9190 using Tapatalk
     
  10. zozo

    zozo Member

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    Presure isn't the isue.. :) As said the co2 regulator are combined also used for nitrogen (50 bar) and argon bottles (200 bar) and fit to take 300 bar. And if in an oxygene tank the presure drops to 55 bar when it empties over time it still is good to go and regulated.

    Your consern is the bottle thread, this just can't fit.. It's also not realy recomended to DIY screw on another bottle connector. It's to dangerous to DIY take apart and screw around with high pressurized regulators and connectors. If something happens the insurance will say by by, no pay today and probably cant repair the hole in you head too. There for this information is no where to find and nobody will/can give other recomandations then buy a fit co2 regulator.. :)
     
  11. ian_m

    ian_m Global Moderator Staff Member

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    Right...O2 cylinders have up to 230bar pressure for larger ones, smaller ones (used by medics) are 130bar, a lot of O2 regulators are designed only for 130bar and have threads too prevent connecting to wrong cylinder type. Also tend to be either low pressure outputs 0-3 bar (face mask) or high pressure 0-15 bar (distribution) again not really suitable for aquarium use where going above 5 bar will burst things. Also fitted with O2 resistant plastics/rubber seals which may not be CO2 resistant.

    So basically as stated get a proper CO2 regulator and it works.

    I have one of these, works fine, very controllable.
    http://www.co2supermarket.co.uk/co2...id-magnetic-valve-horizontal-valves-p181.html
     
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  12. Andy Thurston

    Andy Thurston Forum Moderator Staff Member

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    I guess your right I've been using this for 3 years
    1DA01BFF-B9A5-4E78-A4EA-0A760475F686_zpshaoo3pwx.jpg
    if you look you will find that the diaphrams are made from stainless steel in good quality regs so are co2 safe.
     
    Last edited: 23 Sep 2015
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  13. zozo

    zozo Member

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    I'm using this one.. :)
    lrBQHQp.jpg
    It's an oldtimer :) i just love vintage as is the needle valve.. Also from the welding industry as you see up to 300 bar. Bought it via ebay for €25 i believe.
    i guess if you go for second hand, it's always a gamble how the quality is after years of use. Since i'm on a PH controler, little bubble count fluctuations aren't realy a big isue.
    :)
     
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  14. Jarek

    Jarek Newly Registered

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    There is one place in surrey. In North Cheam. They are also open on Saturday. They charge 20 pounds for a refill
     
  15. soggybongo

    soggybongo Member

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    I'm taking my co2art pro-se reg down to huddersfield tomorrow as I have hopefully found a hydroponics co2 supplier, 6.5kg bottle for £30 and £12 refill. they are not online to buy from so if the reg fits I'll post details about the place.
     
  16. AlanRR

    AlanRR Member

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    If you don’t have any luck then Towler and Stains do pub gas. We got ours from the Keighley branch but I think their main branch is in Bradford.
     
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  17. Jacob Coleman

    Jacob Coleman Member

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    Great article gained lots of knowledge:)
     
  18. DanosCichlids

    DanosCichlids Member

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  19. steve Short

    steve Short Member

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    very informative going down this route in the next few weeks
     

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