Kegconnection Complete Starter Kit and More Giveaway!


Home Brew Forums > Home Brewing Beer > Bottling/Kegging > Keg headspace

Reply
 
LinkBack Thread Tools
Old 01-26-2012, 06:48 PM   #1
lawpaw
Feedback Score: 0 reviews
Recipes 
 
Join Date: Sep 2011
Location: Minneapolis, MN
Posts: 77
Liked 1 Times on 1 Posts
Likes Given: 2

Default Keg headspace

I have searched for this, but couldn't find anything.

Can I keg 4 or 4.5 gallons in a 5 gallon keg? Of course I would purge, but I can't imagine that getting all the O2 out.

What if I want to force carb 4 gallons for bottling from a 5 gallon keg? Would it be a huge waste?

__________________
lawpaw is offline
 
Reply With Quote Quick reply to this message
Old 01-26-2012, 07:06 PM   #2
dbrewski
This is my User Title
HBT_SUPPORTER.png
Feedback Score: 0 reviews
 
dbrewski's Avatar
Recipes 
 
Join Date: Oct 2011
Location: Indeterminate
Posts: 1,019
Liked 51 Times on 45 Posts
Likes Given: 36

Default

yes you can put 4 or 4.5 gal in a corny. Purge and let it sit for two weeks at serving pressure it will be fine.

I would watch burst carbing, because there is an effect of the amount of headspace of CO2 you have - the increased headspace might result in higher CO2 absorbption, so many of the techniques might produce different results (ie. shaking the keg for 100 sec. at 30 psi, which does work, might overcarb in this case). Just my 2 cents.

__________________
dbrewski is offline
 
Reply With Quote Quick reply to this message
Old 01-26-2012, 07:07 PM   #3
lawpaw
Feedback Score: 0 reviews
Recipes 
 
Join Date: Sep 2011
Location: Minneapolis, MN
Posts: 77
Liked 1 Times on 1 Posts
Likes Given: 2

Default

Would it be better to find something gallon sized and pressure proof that I can sanitize and put in there?

__________________
lawpaw is offline
 
Reply With Quote Quick reply to this message
Old 01-26-2012, 07:10 PM   #4
maffewl
Feedback Score: 0 reviews
Recipes 
 
Join Date: Jan 2011
Location: Cookeville, Tennessee
Posts: 1,083
Liked 19 Times on 18 Posts
Likes Given: 1

Default

Quote:
Originally Posted by lawpaw View Post
Would it be better to find something gallon sized and pressure proof that I can sanitize and put in there?
Nah... just purge and keg. Set and forget. I guess you could sanitize a bunch of glass marbles (or some other space filler) if you wanted to, but I don't see the point.
__________________

_

Digital Temperature Controller build:
Click Here

Bottle Cutter build:
Click Here

maffewl is offline
 
Reply With Quote Quick reply to this message
Old 01-26-2012, 07:14 PM   #5
wildwest450
Feedback Score: 0 reviews
Recipes 
 
Join Date: Dec 2007
Posts: 9,099
Liked 163 Times on 149 Posts
Likes Given: 4

Default

Would you dump a full keg after you drank a gallon or two out of it?

__________________
wildwest450 is offline
 
Reply With Quote Quick reply to this message
Old 01-26-2012, 07:22 PM   #6
lawpaw
Feedback Score: 0 reviews
Recipes 
 
Join Date: Sep 2011
Location: Minneapolis, MN
Posts: 77
Liked 1 Times on 1 Posts
Likes Given: 2

Default

No, but I'd be more comfortable that very little O2 was in there since it was sealed full.

I'm not confident purging pushes out all the O2 out. I realize theoretically it should, but in real world application the air may mix quite a bit during purging. 1 gallon could have a good deal of O2 in it, I don't know.

__________________
lawpaw is offline
 
Reply With Quote Quick reply to this message
Old 01-26-2012, 07:26 PM   #7
dbrewski
This is my User Title
HBT_SUPPORTER.png
Feedback Score: 0 reviews
 
dbrewski's Avatar
Recipes 
 
Join Date: Oct 2011
Location: Indeterminate
Posts: 1,019
Liked 51 Times on 45 Posts
Likes Given: 36

Default

when I rack into a corny, I blast it with CO2, right in the open top. CO2 is heavier than air and forms a blanket on the bottom. It also rises with the beer and pushes the air out. That way the beer never sees much O2. The purge is just to make sure.

__________________
dbrewski is offline
 
Reply With Quote Quick reply to this message
Old 01-26-2012, 11:41 PM   #8
mcgearybrewing
Feedback Score: 0 reviews
Recipes 
 
Join Date: Apr 2010
Location: Pottsville PA
Posts: 63
Default

Quote:
Originally Posted by dbrewski View Post
when I rack into a corny, I blast it with CO2, right in the open top. CO2 is heavier than air and forms a blanket on the bottom. It also rises with the beer and pushes the air out. That way the beer never sees much O2. The purge is just to make sure.
That's the way I've been doing it for 11 years and have never had any issues with O, even if I only end up with 3.5G going into the bright tank...
__________________
Sharp Mountain Brewing
mcgearybrewing is offline
 
Reply With Quote Quick reply to this message
Old 01-26-2012, 11:53 PM   #9
david_42
Feedback Score: 0 reviews
 
david_42's Avatar
Recipes 
 
Join Date: Oct 2005
Location: Willamina & Oak Grove, Oregon, USA
Posts: 25,651
Liked 133 Times on 126 Posts

Default

Heck, I've put as little as 2 gallons in a cornie without a problem.

__________________

Remember one unassailable statistic, as explained by the late, great George Carlin: "Just think of how stupid the average person is, and then realize half of them are even stupider!"

"I would like to die on Mars, just not on impact." Elon Musk

david_42 is offline
 
Reply With Quote Quick reply to this message
Old 01-27-2012, 04:49 PM   #10
lawpaw
Feedback Score: 0 reviews
Recipes 
 
Join Date: Sep 2011
Location: Minneapolis, MN
Posts: 77
Liked 1 Times on 1 Posts
Likes Given: 2

Default

Thanks guys, I knew that C02 should form a blanket, but was unsure if there would be any air mixing dynamics that would affect that in the real world.

Glad to hear you all don't have trouble with it.

__________________
lawpaw is offline
 
Reply With Quote Quick reply to this message
Reply


Quick Reply
Message:
Options
Thread Tools