Get your HBT Growlers, Shirts and Membership before the Rush!

 Home Brew Forums > A Carbonation Puzzle
03-12-2009, 02:13 AM   #1
Tech211
Feedback Score: 0 reviews
Recipes

Join Date: Apr 2008
Location: Chicago
Posts: 140
 A Carbonation Puzzle

I have not been kegging for very long and there are a few things I still do not understand. For instance, I learned today that when you set a regulator that is sitting in your refrigerator, the pressure can creep up a couple of psi over a few hours until it hits equalibrium. I thought I just had a faulty regulatory. Here's something I still cannot figure out:

What happens if the pressure you carbonate at is different than the pressure you use to serve? For instance, let's say I have a keg of bitter in a fridge set to 45F and set the psi at 9. The beer should get carbed to 2 units. Now say I want to serve at 15 psi. I bleed the pressure and reset to 15 psi. Won't my bitter be carbed in the next few days to an unacceptable 2.5 units? How would I avoid this without disconnecting the gas everyday?

What about the opposite? Lets say I carb at 15 psi and serve at 9 psi. Wouldn't the beer eventually go from 2.5 units to 2?

__________________

03-12-2009, 02:24 AM   #2
GilaMinumBeer
In yo' garage, steelin' yo parts.
Feedback Score: 0 reviews

Recipes

Join Date: Jan 2008
Location: Oblivion
Posts: 48,893
Liked 4962 Times on 4525 Posts
Likes Given: 60

Yes. And to avoid the confusion learn about direct draw balancing so that you can set it and forget it.

__________________

03-12-2009, 02:37 AM   #3
hopsoda
Feedback Score: 0 reviews
Recipes

Join Date: Dec 2008
Location: Iowa
Posts: 289
Liked 1 Times on 1 Posts

I'm new to keging but why would you serve at a different pressure? for a faster pour? ,
according to the charts the desired carbonation volumes - should be reached at the (x) temp at (x) amount of co2 pressure.

I have been following this and i get good carbonation but my beer is all foam from the tap... so i bleed off excess co2 from the keg and it pours perfect?

I think your pouring pressure should be the same as your target volumes of co2 according to the charts.

Here is 1 carbonation chart http://sdcollins.home.mindspring.com...rbonation.html

Here is 1 link for the:Direct Draw Draft Beer System

__________________

03-12-2009, 03:06 AM   #4
Tech211
Feedback Score: 0 reviews
Recipes

Join Date: Apr 2008
Location: Chicago
Posts: 140

Quote:
 Originally Posted by GilaMinumBeer Yes. And to avoid the confusion learn about direct draw balancing so that you can set it and forget it.
I suppose some part of me was hoping not to have to change the liquid tube length just to serve different types of beer. I guess I have to choose between connecting and disconnecting or getting various lengths of tubing.
__________________

03-12-2009, 03:18 AM   #5
hopsoda
Feedback Score: 0 reviews
Recipes

Join Date: Dec 2008
Location: Iowa
Posts: 289
Liked 1 Times on 1 Posts

They make quick disconnects for the beer line, I bet you could make a few "whips" at different lengths to change the restriction...

Then you could add or subtract a few feet of line without messing with the shanks and all that.

__________________