Keg Volume

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How much actual beer is in a typical keg of beer? The keg supposedly
has a volume of 15.5 gallons, but is that how much actual beer you
get?

We tapped our first keg of Shiner Bock last Saturday and it seems to
be getting empty (excess foam). There is no way we could have gone
thru 15.5 gallons in 9 days. Maybe the excess foam is spurious and the
keg is only half empty, which is about what it should be if there were
15.5 gallons to begin with.

What is the weight per volume for beer? Water is 8 lb / gal, so I
assume beer is close to that. I am going to weigh the next keg I get.

Are there any clever ways to determine the level of the beer in a keg
other that to lift it to see how heavy it is? For example, if you
trained a hair drier on the keg in a vertical strip down the side,
would the resulting frost patch (if any) reveal the level? Or maybe
you need to spray water on the side of the keg to see the level. Or
how about tapping the keg with a small object to listen for some kind
of difference in sound. How about placing a tuning fork end on the keg
to see if there is a difference in pitch?



Re: Keg Volume
If you are getting too much foam it is because the keg was most likely
shaken up before hand.. or just bumped around, etc.

Usually after you tap it and pump it a few times, let some beer out to
bleed the foam out - shouldn't take very long. Then it shall pour good.

Foam is just beer.. regardless if it is foam... As for being able to
determine beer in keg, I have no idea, we just always lift it.

On 9/20/2004 7:54 AM, Bob wrote:
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Re: Keg Volume
There are quite a few reasons for foam, but after nine days you should be able
to eliminate the bumped around and not cold yet reasons.  These are usually the
most common reasons early.

Are you noticing the foam with all you beers or just this keg?  If it is just
this keg, you may want to adjust the the pressure.  You should also check to
make sure you lines are clean.  If you have not cleaned your lines in a while
that may help.  Use a cleaning kit like these
http://www.kegworks.com/shoppingcart/customer/home.php?cat=395.

Here is a pretty good guide on other possible causes of foamy beer  
http://www.kegworks.com/shoppingcart/customer/pages.php?pageid=31
Re: Keg Volume
On 20 Sep 2004 16:29:18 GMT, kegworks@aol.com (Kegworks) wrote:

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This is my first keg.

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I have the pressure at 12 psi, which worked just fine up to this
point.

Update: Now the beer is running as before, with little foam. I am
beginning to suspect a dirty glass. I run the beer down the inside
wall of the glass so if there is any grease or dirt, it will mix in
with the beer and possible cause the beer to foam excessively.




Re: Keg Volume
On Mon, 20 Sep 2004 11:54:41 GMT, spam@joespam.com (Bob) wrote:

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I used to work for a bar that would weigh the kegs as they came in
(and regularly weighed them after they were tapped).  If they came up
light, they went back.  If they came up light repeatedly, the bar
stopped buying them.


Phil

Re: Keg Volume

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I am going to weigh all the kegs from now on.

What is the density of beer? I used to know the specific gravity when
I made homebrew, but I have forgotten. Water is 8 lb / gal so beer
should weigh a bit more. For purposes of a standard density, BudMiller
is as good as any - although I would never drink that swill <yuk>.



Re: Keg Volume
On Tue, 21 Sep 2004 16:45:50 GMT, spam@joespam.com (Bob) wrote:

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A pint weighs one pound, a very convenient coincidence.


Phil
=====
visit the New York City Homebrewers Guild website:
http://hbd.org/nychg/
Re: Keg Volume

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Only if it's American. And that's water. Technically speaking, beer with its
dissolved solids, will weight slightly more. Not enough to make any
appreciable difference in a pint, of course.

-Steve



Re: Keg Volume
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   OK, so who wants to go all Mr. Science on the subject?
Start with the finishing gravity of the beer (say, 1.008
for a typical NAIL, and 1.012 for a typical 4.5%-5% craft
ale?), then adjust for volumes of CO2 (2.7 for NAIL, 2.2
for the American ale).  Better yet, just give a general
formula so we can plug in the starting and finishing
gravities and volumes of CO2 and get a number out of it.

   I want that report on my desk first thing in the morning.
--
Joel Plutchak                "Eat everything. Have fun." - Julia Child.
plutchak at [...]    

Re: Keg Volume
Get a goddamned scale and weigh it, and stop ruining my sleep!



Re: Keg Volume

On Thu, 23 Sep 2004, Lew Bryson vociferated:

}Get a goddamned scale and weigh it, and stop ruining my sleep!

 Done.

 In fact, I did it years ago.

Dr H

Re: Keg Volume

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Yeah, that's a smart thing to expect from the English major. You'll probably
end up with beer being the density of lead yet in a gaseous state. But it'll
have impeccable grammar, some big words, and some clever turns of phrase.

-Steve



Re: Keg Volume
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   That'd work for me.
--
Joel Plutchak                "Eat everything. Have fun." - Julia Child.
plutchak at [...]    

Re: Keg Volume
On Wed, 22 Sep 2004 19:34:26 -0700, "Steve Jackson"

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I think you've just described Sam Adams Triple Bock.
--

Nobody You Know


Re: Keg Volume
On Wed, 22 Sep 2004 13:19:38 +0000 (UTC), plutchak@see.headers (Joel)
wrote:

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I'll settle for an average figure.

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"Beer is proof that God loves us and wants us to be happy."
--Benjamin Franklin



Re: Keg Volume
On Tue, 21 Sep 2004 19:56:24 -0700, "Steve Jackson"

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But what about a keg's worth - 15.5 gallons?



Re: Keg Volume
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Do the math yourself. It ain't that hard.

-Steve



Re: Keg Volume
On Thu, 23 Sep 2004 20:07:19 -0700, "Steve Jackson"

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You can't do it, eh?



Re: Keg Volume
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   I tried but I ran out of fingers.  Even taking off my
shoes didn't help.
--
Joel Plutchak                "Eat everything. Have fun." - Julia Child.
plutchak at [...]    

Re: Keg Volume
On Fri, 24 Sep 2004 16:52:01 +0000 (UTC), plutchak@see.headers (Joel)
wrote:

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I can't do the calculation because I do not know the specific gravity
of a typical beer.


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