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Can I clean an air tank to make it oxygen compatible? How?

Discussion in 'Tanks, Valves & Bands' started by ginti, Jan 17, 2021.

  1. ginti

    ginti Contributor

    # of Dives: 200 - 499
    Location: Lyon, France
    777
    460
    Hi all, I have an AL80 that has always been used with air. Now I want to use it for deco, but it isn't oxy compatible right now.

    Is there any way to make it oxygen compatible? Easy enough to do it at home possibly.

    IMPORTANT: tank and valve as well

    Thanks!
     
  2. rjack321

    rjack321 ScubaBoard Supporter ScubaBoard Supporter

    # of Dives: 1,000 - 2,499
    Location: Port Orchard, Washington State
    11,331
    6,160
    Before you go any further, will your dive shop accept your home cleaning and actually fill it? Or will they insist on their own staff cleaning it?
     
    Bob DBF, oly5050user and ginti like this.
  3. abnfrog

    abnfrog Contributor

    # of Dives: 2,500 - 4,999
    Location: great white north
    1,949
    1,606
    take a course so you are trained and certified
     
  4. ginti

    ginti Contributor

    # of Dives: 200 - 499
    Location: Lyon, France
    777
    460
    Thanks to both of you!

    that's a good point. Actually where I live now there is no shop capable to fill it with oxygen or nx50 (indeed I'll most likely use nx50), so I will have to fill it with some friends equipment, and that is ok.

    But since I often dive far from home, and I may need to fill it at different locations... I guess there is a huge variation about the acceptance of DIY tanks by diving centres, depending also on local regulations, am I right?

    That's a good point. I look online and I found:
    1) TDI Nitrox Blender+VPI+O2service
    2) IANTD EANx Blender+Life Support Systems Service Technician, but this is available only to technicians with a proof of Technician status through manufacturers or through Institute of American Scuba Technicians

    I have two questions about that:
    1 - Is there anything else available?
    2 - is it possible for an individual to get a technician status through a manufacturers? How much does it cost in terms of money and time?

    Also, do diving centres recognise these courses - or does it depend on local regulations?
     
  5. jale

    jale Contributor

    786
    507
    Hi
    Yes you can clean the tank ... and the valve :)
    Now as you are in France, some tanks are aready marked as group 1 (oxy) or group 2 (air) (don't really remember but you can check) and that may be important for you if you need to refill in a shop.
    I also found that if you need to refill out of your normal place, it is good to leave oxy inside; don't empty the tank as it "might" reassure the shop that the tank is "safe".
    After it is often back to personal relationship with the people you are dealing with...
     
  6. ginti

    ginti Contributor

    # of Dives: 200 - 499
    Location: Lyon, France
    777
    460
    Good to know; tomorrow I'll go filling my doubles, I'll ask for some more info.

    P.S. It seems you know a bit about France rules... Do you live here?
     
  7. jale

    jale Contributor

    786
    507
    Used to. But still dive there a few times each summer mainly caves in the Lot.
    Regarding tanks, if I remember alu tanks are not categorised (no group 1, 2) and as it looks you are talking about deco cylinders, I think you have alu tanks
     
    ginti likes this.
  8. ginti

    ginti Contributor

    # of Dives: 200 - 499
    Location: Lyon, France
    777
    460
    yes it's an alu
     
  9. jale

    jale Contributor

    786
    507
    Remove the valve, take it in your shover-bathtub, remove the shover head, put washing liquid in the tank, fill with warm water, shake, use an old toothbrush to clean the threads, shake, rince, redo it if you think it is needed, rince, dry it.
    Then put a new oxy clean valve (50 euros) or clean the old valve and reset with lube and you are done.
    But first check the hydro date :)
     
    ginti likes this.
  10. abnfrog

    abnfrog Contributor

    # of Dives: 2,500 - 4,999
    Location: great white north
    1,949
    1,606
    yes you can get a tech cert ..........either HOG or deep 6
     

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