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How can I carbonate soda using a CO2 tank and not have to carbonate each 2L bottle one at a time? Answered

I want to start making my own soda and I can get my hands on a CO2 tank. I've seen how to do it, but it involves carbonating each 2L bottle separately. I was thinking of filling some sort of tank up with the soda and carbonating that. What would I need in order to set something like that up, and how should I got about doing it?



Best Answer 9 years ago

Cdubnbird has it pretty much - you carbonate the entire batch in a large pressure vessel, then quickly transfer the carbonated soda to the 2L bottles.

Chilling the soda 'close' to freezing will allow it to a) hold more dissolved gas (less energy = less likely to boil off, and b) transfer to the 2L bottles with less foaming.
Professional bottling machines pressurize the bottle with CO2 first, then pump the carbonated liquid in - so it never leaves a pressurized enviornment. This stops it from foaming when filling the bottles.

Yeah, I went to a craft beer place in my town and they did it like that: I mixed up the soda solution, they cooled it for a few days and carbonated it themselves, and then I came back and bottled it. Foaming was somewhat of a problem, but I'm planning on doing this at home on a budget, so I don't think it's going to get that complex.

Since you already have a CO2 tank, it's easy for you to do it the way the beverage service industry does.

The most important piece is the pressure tank for carbonating the water. Turns out these tanks are called a Cornelius keg and consumers can buy them for a reasonable price (probably less than your CO2 tank cost).


The other pieces you will want are:

1) a picnic tap (assuming you don't want to get fancy with a big chrome faucet
2) a CO2 regulator
3) tubing and fittings. You can read up on pin-lock and ball-lock. It sounds confusing at first but it's really not.
4) a frig to keep the keg cold

Could you tell me the process you are using to carbonate 2L bottles now? If it's laborious, then perhaps U R not using the Fizz Giz caps. I do know that larger scale tanks require one of the following:
(1) several days of pressurization to fully infuse surface pressure co2
(2) a lot of heavy tank shaking to force the infusion to occur more quickly.
Twenty-five gallons of soda weighs 200 lbs. You can't shake it as easily as you can a 2L bottle.
Check out FizzGiz.com B4U give up on 2L bottles.


8 years ago

What you need to do is get one of those home soda makers. You get the fully safe tank and when its empty , you just send it in to be cleaned and replaced.

check out http://makyeoursoda.com for more info

would you mind doing a bunch of soda all at once or are you saying you want to fill a nuch of 2 L bottles up all at the same time? For the first you'd just need an industrial pressure tank as in an industrial pressure cooker or other tank that is meant to be pressurized. I have no idea how to fill a bunch of 2 L bottles all at the same time if you mean the second.

Yeah I was thinking of doing it all at once and then putting it into either 2L bottles, beer bottles, or re-purposed Pepsi bottles (the small 20-something oz. ones). Besides the pressure tank, what else would I need to set it up (i.e., the gear to get the CO2 from the tank and into the soon-to-be-soda)?

Go with beer bottles. They're fun, and the lids are cheap - a crimper should be less than 20 bucks, and its a lot of fun to crimp the metal caps on. To do the filling, again, if you can find a way to get a cork in there with 2 openings - one for co2 and one for liquid, you're set. Pressurize the bottle with a regulator to about half-3/4 the pressure of the pressure barrel lemonie suggests. Then close that valve, and inject the liquid. Take the cork out - watch for a bit of overflowing foam, and quickly cap/wash bottle.

I like using the beer bottles (the craft beer place I went to used beer bottles). However, what would I need to make in order to pressurize the bottles and inject the liquid? I'm a complete noob when it comes to CO2 and the likes, so I was wondering what I would need to buy and put together to carbonate some soda. Would it be more efficient to carbonate an entire batch of soda, and then bottle it (the craft beer place carbonated a tank of soda, and then I used a machine to fill each bottle individually) or would it be more efficient to pressurize each bottle/2L and inject the liquid into it (obviously one at a time)?

the bottle of co2 you get will just be raw, 3000 psi of glory.

You want a regulator to reduce the pressure you inject during bottling to below the pressure in your 'keg' of soda - that way the bottle will be pressurized, but not SO pressurized that the keg can't push the liquid thru.

Example: Arbitrary numbers, ask at the beer shop for real ones:
keg = 200psi, make the bottle 50-150 psi with co2 before injecting the soda.

Okay, so I understand that. I need to pressurize the "keg" of soda and pressurize the containers (bottles, 2L, etc.) but only 1/2-3/4 the pressure of the keg so that the soda flows in. But here's my problem: I have never done anything with CO2 before. The last piece I'm really looking for is what actual items I'll need to buy (besides the keg, tank, containers) and how I should hook them up.

you will need regulators that allow you to choose the output pressure - and hosing that is pressure and preferably food-rated. I forget the material, but its translucent hose with fiberglass webbing embedded in it (looks like fishnet) for strength. A local bottling store might have

How would the injection system work? I imagine that I would have a regulator on the CO2 tank and the pressured container (to control the flow of soda), but how would I hook it up so that they can both run (without making like a separate system or anything)?

A bottle holder, that can hold a stopper in the bottle under pressure, and release it... the stopper would have 2 holes and tubes through it. One for co2, the other for pop. Perhaps you could have a 3rd hole with a valve to bleed off the pressure before removing the stopper - so it doesn't explode on you. You'd have 2 regulators ideally - one set for lower pressure, the other higher. Lower goes straight to the bottle thru a valve, other goes straight to the keg, thru a valve. Process: Connect a bottle, and open the co2 valve. Once pressurized, close the co2 valve, and open the soda valve. Watch in awe as the pressure pushes the soda into the bottle. As the bottle fills, the gas in the bottle will compress, slowing the process. Use the bleed valve to 'bleed off' some of the pressure until the bottle is full. Close the soda valve, then slowly bleed the rest of the pressure. Remove the bottle, and cap it. Refrigerate the bottles beforehand if possible. Same temperature as the keg. The keg should be kept as cool as possible too - not mandatory though.

and do it in a ventilated area - releasing lots of co2 in a room can kill you :D

Find a home-brew store / section and get a pressure barrel. These things will hold ~25L. If you inject to the bottom of the barrel with a tube you'd expect to carbonate as well as a SodaStream device I think. They have a tap for dispensing.