Author Topic: Keg to keg transfer question  (Read 260 times)

Offline Lazy Ant Brewing

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Keg to keg transfer question
« on: January 10, 2020, 02:56:12 PM »
I have a porter in a keg that I added a bit too much hazelnut extract to.  I'm thinking about diluting the hazelnut flavor  by transferring some of the base beer in the other keg to it. 

I would use a jumper between the liquid out posts, but I'm not sure how to handle the pressure in the two kegs.  If I vent the pressure in the receiving keg, then how much pressure should I have in the transfer keg to push it through?

Thanks in advance for your advice.
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Online denny

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Re: Keg to keg transfer question
« Reply #1 on: January 10, 2020, 03:21:32 PM »
Just enough.....usually in the 2-5 psi range
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Offline Robert

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Re: Keg to keg transfer question
« Reply #2 on: January 10, 2020, 03:26:09 PM »
I'm assuming the beer is already carbonated.  In that case....  You want to start with both kegs pressurized to a little bit higher than the equilibrium pressure of the beer (that is, pressure needed to maintain your carbonation level at the current temperature.  What you find on a carbonation chart, or your serving pressure.)  Then gently bleed  pressure from the receiving keg to start and maintain flow, but don't let it drop below the pressure of equilibrium.  This will prevent any gas breakout and foaming.  It's the same principle as counterpressure bottling. 
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Offline goose

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Re: Keg to keg transfer question
« Reply #3 on: January 10, 2020, 06:24:11 PM »
I'm assuming the beer is already carbonated.  In that case....  You want to start with both kegs pressurized to a little bit higher than the equilibrium pressure of the beer (that is, pressure needed to maintain your carbonation level at the current temperature.  What you find on a carbonation chart, or your serving pressure.)  Then gently bleed  pressure from the receiving keg to start and maintain flow, but don't let it drop below the pressure of equilibrium.  This will prevent any gas breakout and foaming.  It's the same principle as counterpressure bottling.

^^^^This.
If you have a spunding valve it will help you maintain the equilibrium pressure by reading the pressure on the gauge.
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Offline charlie

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Re: Keg to keg transfer question
« Reply #4 on: January 20, 2020, 03:06:53 AM »
Google "keg keg transfer".

I tried to post a pic of the procedure, but this forum's software is so amazingly primitive that you can't post a pic or (apparently) link to one on google drive! Lots of time wasted, so I gave up.

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Online BrewBama

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Re: Keg to keg transfer question
« Reply #5 on: January 20, 2020, 04:07:12 AM »
Hope this helps:

https://youtu.be/XywR_DRtoo8


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Offline kitiqipi

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Re: Keg to keg transfer question
« Reply #6 on: January 20, 2020, 09:56:56 AM »
Hope this helps:

https://youtu.be/XywR_DRtoo8


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Offline goose

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Re: Keg to keg transfer question
« Reply #7 on: January 20, 2020, 06:55:24 PM »
Here is how I pressure transfer keg to keg.  It works well.  The spunding valve at the top of the picture is used to control the pressure in the receiving keg.

You can use a shorter line between kegs but this is my standard line ai Sue to transfer sanitizer from keg to keg.

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« Last Edit: January 21, 2020, 02:56:34 PM by goose »
Goose Steingass
Wooster, OH
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Wayne County Brew Club
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