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C02 Cartridge Pressure ?

ern98
Hey does anyone here know the pressure specs on a standard C02 cartridge? I'm trying to replace the need to use a cartridge and use a C02 tank instead and am wondering whtat pressure I should be setting the regulator at. Thanks
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9 comments

Date Votes
  • iwannausername
    IIRC from my diving classes back in the early 80s that it was 4 atmospheres or so... so 60 psi
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  • beantownshootah
    Hmm. . .its a good question.

    Technically the CO2 inside the "powerlet" type cartridges is liquified.

    Pressure they generates on release will be dependent on temperature. According to this excellent reference, the guns run well at about 900psi:

    http://www.pyramydair.com/site/articles/co2/

    If you want to do an empirical experiment, you could simply start at zero and SLOWLY increase the pressure one shot at a time until you replicated the ballistics of the gun in question using its conventional CO2 source.


    This info may also be helpful, though in a different way:

    http://www.spudfiles.com/spud_wiki/index.php?title=CO2_cartridge
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  • MIKE WISKEY
    IF THIS IS FOR A CO2 RIFLE OR PISTOL THERE IS NO REGULATOR, I JUST CALLED OUR LOCAL WELDING SUPPLY, AT ROOM TEMP. PRESSURE IS 500 PSI
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  • ern98
    Actually this is for carbonating water. But a C02 cartridge is a cartridge irreguardless if used in a pellet rifle or a food application. Thanks for the info.......
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  • rsnyder55
    Not necessarily true. Some of the ones for pellet guns contain oil.
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  • 11b6r
    snyder is right. I have CO2 "sparklets" for an old style seltzer bottle- they are green in color to indicate no lube oil.
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  • beantownshootah
    That's correct.

    The CO2 cartridges designed for air pistols may contain lubricating oil.

    For what its worth the standard airgun uses a 12 gram "powerlet".

    The older green "sparklet" for making seltzer uses a smaller 8 gram CO2 cartridge.

    Many years ago I learned this the hard way trying to make Seltzer with a gas gun cartridge! [;)] (Good thing I didn't get it to work. . .nobody likes oily seltzer!).
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  • ern98
    This is a seltzer system that normally takes a food grade C02 cartridge. We wanted to adapt a C02 tank from a homebrewery to make selzer. It worked 80/100psi makes fine seltzer and the conversion cost less then $2. Thanks again for the info........
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  • SoreShoulder
    quote:Originally posted by iwannausername
    IIRC from my diving classes back in the early 80s that it was 4 atmospheres or so... so 60 psi
    [:o)]I don't think you breathed CO2[xx(]

    The pressure is 853psi@70 deg.F and goes up or down somewhat based on the temperature, IIRC. It is a physical property of solid CO2 and does not depend on the cartridge make. When 853psi is reached, it stops evaporating, leading the pressure to level off.
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