deejay Posted September 12, 2019 Report Share Posted September 12, 2019 Just picked up a fire extinguisher from a shop we just closed down, could of had a couple to be fair, wondering if anyone has ever made an air cylinder out of one. There are some videos on YouTube, but not sure just how safe this would be. Quote Link to comment Share on other sites More sharing options...
Dave at kelton Posted September 12, 2019 Report Share Posted September 12, 2019 Wouldn’t risk it as I can’t see how you can be assured it will take sufficient pressure. As a recreational diver you just don’t take risks with air tanks. Quote Link to comment Share on other sites More sharing options...
bluesj Posted September 12, 2019 Report Share Posted September 12, 2019 Not very I wouldn't think. can't see you getting a test on one so won't be able to get it filled. Quote Link to comment Share on other sites More sharing options...
DoolinDalton Posted September 12, 2019 Report Share Posted September 12, 2019 Is there any pressure rating on the extinguisher? The obvious difference between an extinguisher and a dive bottle/ air cylinder is the weight! The dive bottle is made of thicker metal for a reason....very high pressure! Quote Link to comment Share on other sites More sharing options...
ditchman Posted September 12, 2019 Report Share Posted September 12, 2019 dont do it.................. Quote Link to comment Share on other sites More sharing options...
Snoozer Posted September 12, 2019 Report Share Posted September 12, 2019 Just looked at our Extinguisher in the Kitchen. Rated in Bar & P.S.I When the charge is in the Green zone it's at 185 psi When its over to the far right of the overcharged Zone it's at 400 psi Irrespective of the rated pressure I wouldn't Quote Link to comment Share on other sites More sharing options...
Ultrastu Posted September 12, 2019 Report Share Posted September 12, 2019 So 400 psi is 27 bar .. Most airguns operate between 230 and 100 bar .a pcp wont fire a pellet out of the barrel much below 50 bar. So there is your answer . NO . Quote Link to comment Share on other sites More sharing options...
deejay Posted September 12, 2019 Author Report Share Posted September 12, 2019 OK well that rules that out then I guess.. I've just seen the compressors on ebay capable of filling an air gun up for less then the price of a dive tank Quote Link to comment Share on other sites More sharing options...
oldypigeonpopper Posted September 12, 2019 Report Share Posted September 12, 2019 hello, is it a Co2 one? Quote Link to comment Share on other sites More sharing options...
deejay Posted September 12, 2019 Author Report Share Posted September 12, 2019 Yeah it is.. Not sure if that makes a difference Quote Link to comment Share on other sites More sharing options...
Diver One Posted September 12, 2019 Report Share Posted September 12, 2019 (edited) I wouldn't even consider it....see Avatar dive cylinders are usually 232 bar filled to 200/220. Or 300 bar cylinders having been close to a couple that have gone whoooof it is not pleasant. Get It wrong and people can see what you were made of Edited September 12, 2019 by Diver One Quote Link to comment Share on other sites More sharing options...
oldypigeonpopper Posted September 13, 2019 Report Share Posted September 13, 2019 12 hours ago, deejay said: Yeah it is.. Not sure if that makes a difference hello, in that case no for PCP air, but people do fill Co2 air rifles with these Quote Link to comment Share on other sites More sharing options...
udderlyoffroad Posted September 13, 2019 Report Share Posted September 13, 2019 (edited) 16 hours ago, deejay said: There are some videos on YouTube, but not sure just how safe this would be. Can you link to one? I suspect someone was making an 'air pig' out of one - these are portable tanks for filling tyres and the like, so filled by a workshop compressor to a MWP of 8 bar or so. Not the same as a dive tank filled to 300 bar! Edited September 13, 2019 by udderlyoffroad Quote Link to comment Share on other sites More sharing options...
1066 Posted September 13, 2019 Report Share Posted September 13, 2019 I use a 2KG Co2 extinguisher to fill my co2 pistols/rifles - A new full cylinder costs around £25 and I can get a CO2 refill for £5.00. CO2 is typically around 800psi at room temperature up to 1,000 psi on a warmer day. - makes for very cheap shooting. Quote Link to comment Share on other sites More sharing options...
Gordon R Posted September 13, 2019 Report Share Posted September 13, 2019 (edited) I was thinking of the wrong type of air cylinder - so edited my response. Edited September 13, 2019 by Gordon R Quote Link to comment Share on other sites More sharing options...
rovercoupe Posted September 13, 2019 Report Share Posted September 13, 2019 Run my air horns off a 2 kg co2 extinguisher bottle and even tapped it for another outlet and it's been up to 200psi but not going any higher! Quote Link to comment Share on other sites More sharing options...
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