dessaler
Registered
i have a co2 extinctinguisher
thread 1.125-12UNF-2B
how to converted in pony bottle?
thread 1.125-12UNF-2B
how to converted in pony bottle?
Converting fire extinguishers into SCUBA bottles
- Thread starter dessaler
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DivePartner1
Contributor
dessaler:
I don't know about CO2, but for those who might consider converting a chemical extinguisher, don't do it. I re-charged chemical extinguishers when I worked as a carpenter on a railroad. I remember how they stop your breathing on the slightest whiff. I don't know if these could be cleaned well enough and the smallest trace can is choking. That's the point, I guess.
I know this isn't what you're propposing, but would like any lurkers to keep the difference in mind.
As to CO2, I'll leave it to the shops to say whether this could be prepared and whether it meets spec. Good luck.
mgdive
Guest
dessaler:
What are the service pressure ratings on those bottles? C02 liquefies at standard temperature well under even 1500 psi, thus I wouldn't imagine those bottles able to handle much more than 3000, nor would I want to try.
quimby
Contributor
Well that was common practise in the 60's and generally required a machined HP bushing(not cast as in homedepot etc). The next item is a 1/2in taper pipe valve as in the days of old and your 2015 or 1800# bottle is now a pony.
One other problem is getting it filled, not many dive ops would touch a bottle like that and especially with other than air. Bottom line, and I dove converted fire extinguishers(my first tank) and filled bunches of them, but the idea is past it usefullness. More better to hunt ebay and get a al 20,30 or what ever and just be done with it. For the money time and agravation afterwards aint worth it.
I don't want to sound too snarky, but this definitely sounds like you're fixing to pour chlorine into your own gene pool...
Your life my depend on this. :11:
Fred
Fred
quimby
Contributor
Guys lets not get carried away with ourselves, if you have something intelligent to say great but by these comments its obvious you at best dont so dont waste bandwidth
I think it's prudent to warn people of potentially dangerous mistakes. I wasn't acutally thinking about problems with diving with it. i think the chances are higher that he'll hurt himself (or someone else) getting it filled.
Intelligent or not I stand by my comment. It's nuts.....by which I mean unwise and potentially dangerous.
R..
Intelligent or not I stand by my comment. It's nuts.....by which I mean unwise and potentially dangerous.
R..
Plbtbtbt!quimby:
I don't know what you would consider an intelligent comment to be, maybe something along the lines of, "Gnarly, dude, go for it!" but I think that strongly suggesting he reconsider the very idea is not only the intelligent thing to do, but also the only decent and responsible thing.
I'm all in favor of DIY solutions - they can be fun and innovative and less costly, all good things. They can also be dangerous and impractical. I know that back in the stone age of diving converting fire extinguishers to pony bottles was a not uncommon practice, however that doesn't mean that it was or is an intelligent thing to do. J-valves were replaced by K-valves and an SPG; Mae West's fell by the wayside with the development of stab jackets and wings; and, amazingly enough, ready-made pony bottles that won't blow up or poison you can be cheaply and conveniently obtained from a wide range of sources. Sometimes progress is a good thing.
While we're on the subject of intelligent contributions to the conversation, I see that you don't think much of his idea either, but that you went ahead and gave him a fairly detailed explanation of how to do it. Isn't that something akin to teaching someone how to fire a gun that just told you they want to blow their brains out?
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