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dive bottle sizes

Discussion in 'Anything Airgun Related' started by weihrauch hw, Feb 18, 2012.

  1. weihrauch hw

    weihrauch hw Junior Member

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    Hello people,
    what is the biggest size dive bottle you can buy?
    Thanks
    Luke
     
  2. secretagentmole

    secretagentmole Low down, dirty and quiet...

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    you can get 300 bar air tanks in some horrendous sizes, not for diving but for industrial use...
     
  3. banger12

    banger12 Engaging Member

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    most folk get 3 ltr or 7 ltr ( what i have) clubs tend to have 12 ltr, anything bigger than that is imho unnessesary.
     
  4. weihrauch hw

    weihrauch hw Junior Member

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    Its not for air guns, its for paint balling, people i do paint balling with, we all have 1.1 L bottles, and thats 5 of them, so thats all ready 5.5L so with a 12 litre, we will only be able to fill them up twice, was wondering if you could get any larger ones like 25 L, and how much would they be?
    Thanks
     
  5. banger12

    banger12 Engaging Member

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    it dosent work like that, if you get a 300 bar cylinder, you get far more fills , its not litre by litre..
     
  6. Ianhw77k

    Ianhw77k Big Poster

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    Quite right mate.
    The largest I've seen available is 15litre and they seem pretty hard to come by. Whatever you get, higher pressure means more fills;)
     
  7. mattyts

    mattyts Donator

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    12l seems most reasonable,not the most portable though,7l arent too bad,i have a 7l
     
  8. mattyts

    mattyts Donator

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    make sure you get a 300bar one not a 232 bar
     
  9. weihrauch hw

    weihrauch hw Junior Member

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    Okay, so the air bottles i use, are 1.1L 4500 psi.
    There are 5 of these, so would like to get a good few fills with all 5, what size would i be looking at?
     
  10. mattyts

    mattyts Donator

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    are you travveling alot? if you are go for a 7l one,if youre stationary go for the 12l or even bigger!
     
  11. weihrauch hw

    weihrauch hw Junior Member

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    Moving it round won't be a problem, as got a very large car, the only time it will be moved will be to refill it.
    So with a 12L bottle, wouldn't you be able to fill a 1.1 4500psi bottle up 10 times?
     
  12. mattyts

    mattyts Donator

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    dont know how to calculate anything like that but a 12l is probably youre best option then
     
  13. Irvysan

    Irvysan Posting Addict

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    If my google powers are correct 4500psi equates to 310bar :confused: < is the max rated pressure of the bottles not the fill pressure??
     
  14. weihrauch hw

    weihrauch hw Junior Member

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    well it doesn't need to be able to feel the bottles completely up. so i am sure 10 bar, will only make 100 psi different? correct me if i am wrong :)
     
  15. Jackroadkill

    Jackroadkill Donator

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    10 bar is 150 psi, Luke.
     
  16. Irvysan

    Irvysan Posting Addict

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    1bar = 14.50psi (absolute) so 10x14.50 = 145 - Not that im pedantic :p
     
  17. Jackroadkill

    Jackroadkill Donator

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    Okay, smartypants!

    Luke, the way to look at it is this. A 10l bottle rated at 300 bar will contain 300 x 10l of air (3000l). It will only fill to an equal pressure, eg if you have 150 bar of pressure left in it, you won't be able to top up another bottle that already contains 160 bar of pressure.
     
  18. Irvysan

    Irvysan Posting Addict

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    Im not talking about 'filling' them as such its about the pressure inside the bottles :

    if you use a 300bar bottle to 'fill' your 4500psi (310bar) bottle (regardless of volume) the maximum pressure inside will only be 300bar

    I hope this makes sense or im completely wrong :eek:

    HTH

    Irv
     
    Last edited: Feb 18, 2012
  19. Irvysan

    Irvysan Posting Addict

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    Lol, took me 5 mins to say the same thing (roughly) :up:

    Irv
     
  20. weihrauch hw

    weihrauch hw Junior Member

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    Why don't they teach this stuff in maths! haha
    So in another words, i will be able to fill up a 1.1L lots of times, but every time i fill it up, i will only be able to fill it up a little less than the time before?
    thanks :)
     

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