Temp's affect on c02

[GatorBrew1]

Hello Gang-

Just completed my kegerator and have my corny carbonating. I chose the "set and forget" method. I have my corny and the c02 tank (5 lb) in the fridge. I set my c02 to 12psi after purging the 02 out. Had a hard time getting my corny to seal. I set it at 30psi and bled the corny down from there. All seems good (for now) still not convince the corny is not leaking around the lid.

My real question is.......When I put the c02 tank in the fridge, my tank pressure goes below the "green zone", I guess to around 30 psi, when I take te tank out of the fridge it goes back up to the "green zone' or the "full" area. Is this normal? Does this mean that my fridge is too cold? I don't have a thermometer yet to see exactly what the fridge temp is, Im guessing about 40*.

The c02 pressure stay at a steady 12 psi.

Thanks for any help.

 

[cricky101]

Here's a bunch of info about co2 and temperature. If you can rule out a leak, you're fine ...

https://www.homebrewtalk.com/f35/can-temperature-change-cause-co2-pressure-drop-124453/

 

[audger]

the pressure required to keep CO2 in liquid form decreases with temperature, so when you refrigerate your whole CO2 tank, the internal tank pressure will drop from around 800-900 psi (room temp) down to 500-600 psi. this alone does NOT mean that you are leaking, and is completely normal.

 

[GatorBrew1]

Thanks guys for the replys. Before I get flamed, I did use the search feature, guess I didn't type in the correct search phrase. Like I said, I had a hard time getting the lid to seal. A real PITA. Everything looks fine now, just a freaked out noob. Not sure at this point if I want to leave the c02 in the fridge or take it out. My wife will probably be happier with it hidden in the fridge since I have the kegerator in the dining room (for now). :rockin:

I hate it when I ask a question then there is another thread covering the exact same thing. I feel dumb. Thanks for not beating me up.

 

[IffyG]

FWIW, the high pressure gauge is pretty much worthless on a 5 lb tank. All it really tells you is if you have CO2 in the tank or not.

 

[GatorBrew1]

FWIW, the high pressure gauge is pretty much worthless on a 5 lb tank. All it really tells you is if you have CO2 in the tank or not.

That you for all the help. Guess I'll just sit back and relax now.