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View Full Version : Nitro/co2 keg pressure?


jason.koehler
10-04-2007, 03:20 AM
Hi gang,

I was wondering what some of you who might have/had a nitro beer have done to keep consistent pressure while kegging. Currently we are kegging from a brite/conditioning keg, and trying to keep top pressure (80/20 nitro/co2 mix) the same through kegging, but still have some oddball kegs that end up too low. Suggestions?

Also, can someone point me to some kind of co2/pressure gague that can be attached to a keg and can give an accurate reading of disolved co2?

Thanks!

GlacierBrewing
10-04-2007, 07:29 PM
Howdy,
I've had great success with carbonating my nitro beer to around 1.5-2 volumes of CO2, kegging out, then nitrogenating the kegs in the cold room with a nitrogen tank set at about 40psi for 2-3 days.
As far as checking CO2 volumes in kegs, I've modified a Sanke coupler with a "pancake" fitting on the beer-out portion. Then I can connect my Perlick faucet to the pancake and my Zahm-Nagel to the Perlick. Life is good!
Luck to ya'!

Prost!
Dave

Sulfur
09-09-2008, 09:06 AM
On a similar note. Our brewpub dispensed Stout is with 100%CO2 (the old fashioned way). Some customers have requested nitrogen and we're ready to do an experiment with a kegerator. We have a gas blender and will have a supply of 25%CO2/75%N2 coupled to the kegerator (with stout faucet as well). Does anyone have any recommendations on doing this? I'm thinking on waiting a few days after hook up for the system to equilibrate itself.

porter
09-09-2008, 03:46 PM
The one thing I have learned when kegging Nitro beers is that you have to fill them slowly. I always start the filling without relieving any pressure on the keg and leave it for 30-60 seconds for the pressure to equalize. Then I open the relief valve on the fill head and fill the kegs slower than other beers.
Nitrogen does not want to stay in solution as much as CO2 and I get great results babying it.
We use a 75%CO2/25%N blend to carbonate the beer through the stone but push it out with straight CO2 while kegging.
Hope this helps!

Sulfur
09-09-2008, 04:08 PM
The stout I'm kegging is 100%CO2. The N2/CO2 blend and corresponding high pressure will be introduced during dispense. I'm hoping that it will equilibrate itself since the gas blend is 75%N2 with 0% in solution. I will hope for a steep concentration curve. Will post results here.