C02 Pressure

[Galaxy_Stranger]

I've got a 2 liter bottle sitting with a C02 can at 8 or 10 pounds of pressure. How long would it take for it to be fully carbonated? And is there a better pressure I should be using?

 

[JohnnyBrewGood]

bump it to 20-30 and gently shake it and it will be carbed in 5 min. Maybe over carbed.

to answer your question, at that PSI should be about a week IF not just over a week. The higher the PSI, the less time but you may over shoot it.

Most will tell you 12 PSI and leave it alone for a week.

Personally if I am carbing a 2 liter bottle I will blast 30+ psi and shake it. For my kegs I go 30+ PSI for a day then 20 for a day then 15 until done. Takes about 4 days but I like my beers slightly under carbs as a general rule.

 

[MrFancyPlants]

Don't forget carbonation is dependent on temperature.. google carbonation chart and you should be able to figure out what pressure for you temperature and style of beer

 

[Galaxy_Stranger]

Yeah, this is going to be room temp.

My boss says he does 4lbs in his keg for a week while refrigerated.

 

[Hopper5000]

A 2liter bottle? Like a glass bottle? Do you have a pic of the setup? Make sure you aren't pushing too much C02 in there that might go beyond what the vessel is rated for.

 

[joshesmusica]

A 2liter bottle? Like a glass bottle? Do you have a pic of the setup? Make sure you aren't pushing too much C02 in there that might go beyond what the vessel is rated for.

I agree. What exactly are you talking about with a 2L bottle?

Here is the chart that I use:
http://www.kegerators.com/carbonation-table.php

I wouldn't ever recommend the high pressure-shake-n-bake method. It typically leads to over-carbonation. If you do high pressure without shaking for a day, then reduce to serving temp (for kegs at least), it usually pans out to the proper pressure. But with some kind of 2L bottle, I would be overly cautious and just shoot for the recommended pressure for the style.

 

[doug293cz]

Yeah, this is going to be room temp.

My boss says he does 4lbs in his keg for a week while refrigerated.

At room temp you're going to need 25 - 35 psi, depending on the carbonation level you want. 25 psi will give you about 2.2 volumes, and 35 psi will give you about 2.9 volumes @70°F.

4 psi refrigerated will give you 1.5 - 2.0 volumes depending on temperature.

You can pressurize to the equilibrium pressure (value in charts) for the carb volumes and temperature of the beer, and then shake the bejeezes out of it to speed CO2 absorption without fear of over carbonation. Be sure to chill and let the bottle set for a couple of hours before opening, unless you want a beer shower.

Brew on

 

[Galaxy_Stranger]

A 2liter bottle? Like a glass bottle? Do you have a pic of the setup? Make sure you aren't pushing too much C02 in there that might go beyond what the vessel is rated for.

Yeah, so it looks like I'm going to need about 30 or so lbs of pressure. It's sitting in a 71° room.

 

[chawn]

I have a carbonator and definitely wouldn't trust it enough to put 30lbs of live CO2 on it for a week. The thing doesn't even have a rubber seal on it.

All you need to do is refrigerate it, set your regulator to to 20 lbs, shake vigorously for 20 seconds, check carbonation, repeat if necessary.

 

[PrinceOfThePoint]

Edit: Posted in error

 

[Hopper5000]

Yeah, do you know if that cap or the 2liter bottle can handle 30PSI? I am thinking it probably cannot...

 

[RmikeVT]

If you are using a plastic 2L soda bottle they can handle a lot of pressure and the carbonation cap and definitely handle 30psi.

Take you beer in the bottle and put in your fridge until it is cold.
Adjust regulator to 30 PSI
Attack Co2 to carb cap
remove co2
shake
repeat 2 or 3 times and then put back in fridge for 30 minutes or so to let it settle down.

 

[Hopper5000]

I was only commenting on what I thought would be reasonably safe, Rmike's method would work well however.

 

[JohnnyBrewGood]

If you are using a plastic 2L soda bottle they can handle a lot of pressure and the carbonation cap and definitely handle 30psi.

Take you beer in the bottle and put in your fridge until it is cold.
Adjust regulator to 30 PSI
Attack Co2 to carb cap
remove co2
shake
repeat 2 or 3 times and then put back in fridge for 30 minutes or so to let it settle down.

EVERYTIME I rack into a keg I do the same thing into a 20oz soda bottle but I do not disconnect. I chill, connect QD w/ regulator @ 30psi, shake, wait a few min, shake, wait a few shake, All while connected. Disconnect, slowly open and taste. again if I need to. I cannot wait for almost anything. I rush everything.

But I get to taste first beer right out of secondary. Yeah its a little green, but I get to see how the beer evolves with age. Right from jump street.

 

[RmikeVT]

dupe