Crack bottles and such....wtf?

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If they are what I am thinking of, it is an air bottle (not CO2) that makes a spare air look huge. Literally just enough air to fill a DSMB. I have never seen one in person. Only seen photos of them. Looks like one of those solution in search of a problem dreams someone had and thought they would sell great, and were happy when 5 years later the last of the starter batch finally sold.

That's the type I already have. They're know colloquially as, crack bottles. The problem is that I need a new bottle and as far as I know, they are only available in the UK. There are a couple of companies that make a CO2 version, the cartridges can be purchased anywhere, however, one companie's website is down and the other is out of stock. They are both in the UK.
 
I did think about this. It would have to be able to withstand salt water. Do you have knowledge of such a thing?

The auto-inflate (and pull-cord inflate, for that matter) life vests use a CO2 cartridge. Other obscure sources of the mechanism might be the freediving rescue vest or those vests that big wave surfers wear.
 
That's the very thing! Thanks.

For what it’s worth, I’ve had the oral inflate version of that one for 10 years. Had to replace the oral inflation valve a couple of times (spring and seat in the inflation but start to leak), but it’s built like a tank and I’ve always gotten great service from the company.

Jim
 
Go online (Craig’s List) and look for a vintage horse BC circa 1980. You can pull one off and remount it on a DSMB. Or you could buy a new one:
https://picclick.com/2X-Halkey-Roberts-840-Manual-CO2-Life-Vest-Inflator-283791113782.html

Just keep in mind this is not a use it every day devise. The cartridges are expensive, figure spending $15 a pop to shoot a buoy. Another option would be use an LP inflator or buy a DSMB that can be inflated using a regulator.
 
I started writing my comment on this a couple of hours ago and just posted it with two new pages in the interim.

CO2 Inflators were standard before LP inflators became the norm. My first BC came with both. They were an emergency device more than anything because the cartridges are not cheap. They are also kind of slow. The CO2 in the cartridge starts out under pressure as a liquid at around 850 psi. When you pull the release and the gas rapidly starts to sublimate into a gas. After a very short period it will cool itself into dry ice. The one time I did a test inflate on my Jacket BCD, it took a surprisingly long time to fully deploy. A LP inflator releases a gas from high pressure to low pressure, the limiting factor is the size of the aperture. With a CO2 cartridge, you are waiting on the gas to sublimate. It is quick, but not nearly as fast as an LP inflator.
 

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