co2 tank pressure
Paint ball guns run at 850 psi….I remember the paint ball dude at the shop sayin that when he charged my tank…..hmmm ,does that mean igot a weak charge on my cylinder ? er ,does that 850 psi turn into 2000psi when it goes through the pisshole in the co2 adapter ?
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Just because you have been doing it hardly makes it ‘correct’ or ‘safe’
Do not share or recommend these practices.
As a former scuba instructor, I know a bit about scuba tanks/pony bottles and burst disks. If the tank is rated 1800 psi, then the burst disk is rated somewhat higher than that to allow for hot days and overfills.
Its real purpose is to protect the tank if left unattended while filling it from a running compressor, and possibly protecting the compressor, though most have their own pressure relief valve. They are designed to burst at well above the tank rating – often around 40% above nominal. For an aluminum 80, that would be:
3000 PSI x 1.4 = 4200 PSI.
For hot trunk storage, do a google search on “Charles Law” which will explain why a full tank in a hot trunk generally will not blow its burst disk. It has to do with degrees “Rankin” and degrees “Fehrenheit” and is too long to go into on this forum. You will be surprised how little a hot trunk will affect a filled tank.
I know of some Florida dive shops who do a “Cave Fill” and crank a 3000 psi tank up to 4000 psi. Its a poor mans (and stupid) means to make an standard sized tank into an oversized tank to extend dive time. The down-side is, if the burst disk fails to blow at its rated pressure, the person filling the tank is likely going too end up very dead, maimed, or mutulated. But still, it is done.
While there are safety margins involved, certainy neither I, nor the other posters are advising anyone to overfill a tank. If you do so, understand it is at your own descretion and risk.
test
You best not fill CO2 tanks to ANYTHING over the 1800psi stamped on the neck!!!!!!!!! 😯
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Hmmm, I didnt know we can do that !
This is starting to get interesting!
I wonder how many shots that would provide?
Right On!!!
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Ya but 1600 pounds of air is better in the winter then co2 would be, never fill bottles over what they are rated.
Hoot 😯
I dont think we could even do that buddy,they are designated co2 or hpa…prolly because of pressure designation in relation to the pressure releif safety valve, in the paint shops in their display cabinets they are seperate.If we filled a co2 tank with hpa to 3000psi….er tried,the safety would blow off quite violently Iam sure.
It shouldn’t be any problem, and I think I may have to try this someday.
If you filled the CO2 tank with air, would you need to change out the CO2 adapter and use the air adapter instead? It would be neat not to have to buy an entire new setup to get 1500 to 1800 psi in the winter. I’m thinking filling the tank might be a problem with the CO2 adapter in place?
Hoot 😯
But why are the Co2 tanks marked 1800psi?
The tank manufacturer made and rated with DOT approval the tanks to 1800psi allowable working pressure. So if that tank was used for other than CO2 it could be used to the full 1800psi. We use those little tanks for cal gas and they come full at 1500 to 1800psi depending on the gas mix.
CO2 is but one use for those tanks.
Walter….
Thank you, I now understand.
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