Author Topic: Quick, quick carbing question?  (Read 4206 times)

Offline dzlater

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Quick, quick carbing question?
« on: October 29, 2011, 03:11:38 PM »
I wanted to carb up a keg quickly , so I followed the directions in the latest Zymurgy article on speed brewing. I set the regulator to the correct psi for the temp and carb level. Then rolled it back and forth till I didn't  hear anymore gas going into the keg. This worked well.
My question is after I get it carbed, do I :
Disconnect the gas vent the keg and then set to serving pressure?
Or leave the gas hooked up and release the pressure till the regulator drops to serving pressure?
Or something else.
Thanks
Dan
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Offline gmac

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Re: Quick, quick carbing question?
« Reply #1 on: October 29, 2011, 08:26:26 PM »
What I've done, after jacking up the pressure and shaking the keg, is turn the regulator back to normal serving pressure and vent the keg until the rapid rush of gas slows to what sounds like the same as the amount going in and then serve.  The regulator should drop on its own to serving pressure (or at least, mine does).
Works for me.

Offline tschmidlin

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Re: Quick, quick carbing question?
« Reply #2 on: October 29, 2011, 10:55:51 PM »
I set the gas to the serving pressure and then chill the keg without venting it at all.  I'm sure it will work fine either way, venting or not.  There shouldn't be too much difference.
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Offline Gribble

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Re: Quick, quick carbing question?
« Reply #3 on: October 29, 2011, 11:06:32 PM »
The question that I have is is the keg chilled prior to speed carbing?  If no then yes chill and the pressure should drop down and settle at your serving pressure after you have adjusted your regulator.  If yes then drop your regulator down to serving pressure and vent the keg in short bursts til you hear CO2 running through the regulator again and then leave if.
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Offline tschmidlin

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Re: Quick, quick carbing question?
« Reply #4 on: October 29, 2011, 11:15:52 PM »
I wondered that too, but I figured if the keg was already at serving temp then the carbing pressure should be the same as the serving pressure.  It doesn't have to be I guess, but it's a lot easier if it is.
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Offline dzlater

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Re: Quick, quick carbing question?
« Reply #5 on: October 30, 2011, 03:31:10 AM »
The beer was cold when I carbed it.
I set it to 16psi and did the shake.
Usually I set the reg at around 8psi to serve.
Dan S. from NJ

Offline dzlater

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Re: Quick, quick carbing question?
« Reply #6 on: October 30, 2011, 03:46:06 AM »
I wondered that too, but I figured if the keg was already at serving temp then the carbing pressure should be the same as the serving pressure.  It doesn't have to be I guess, but it's a lot easier if it is.

If I try serving at carbing pressure I get a glass of foam. I just have 5' of beer line with a picnic tap.
But I think I understand this now.
Ideally I'd want to adjust my beer line length so I could serve at carbing pressure?
If I carb at 16 and serve at 8, I would have to double the beer line to serve at 16?
But then every time I want to serve a beer at different carb levels I woud have to change the length of the beer line?
« Last Edit: October 30, 2011, 05:24:13 AM by dzlater »
Dan S. from NJ

Offline Gribble

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Re: Quick, quick carbing question?
« Reply #7 on: October 30, 2011, 10:38:36 AM »
It depends.  If you're using a picnic tap I assume you're either using 3/16 or 1/4 inch line.  3/16 line has a resistance of 2 lbs a foot.  To serve at your carbing pressure of 16 psi you would need 8 feet of 3/16 line.
Quote
But then every time I want to serve a beer at different carb levels I woud have to change the length of the beer line?
Not necessarily.  Carbonate your beer to the appropriate volumes for your serving temperature.  Serve at your appropriate pressure for your system.
« Last Edit: October 30, 2011, 10:41:09 AM by Gribble »
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Offline dzlater

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Re: Quick, quick carbing question?
« Reply #8 on: October 30, 2011, 12:28:06 PM »
If my serving pressure is less then my carbing pressure won't it slowly loose carbonation?
Dan S. from NJ

Offline Gribble

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Re: Quick, quick carbing question?
« Reply #9 on: October 30, 2011, 01:57:25 PM »
You'd have to have a really high CO2 volume to do that.  Here is an example.  My serving pressure is about 12 psi so I use a 6' long 3/16 line.  My serving temp is 38 degrees F.  I usually carbonate to about 2.4 volumes.  Now at that temp if I wanted to Carbonate to 2.8 volumes, I'd be setting my pressure to 14.4 volumes.  I dont think that 2.4 psi is going to make too big of a difference.  If you can get your serving pressure into a general medium of carbonating pressures I think you'll be fine.
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Offline liquidbrewing

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Re: Quick, quick carbing question?
« Reply #10 on: October 30, 2011, 02:17:51 PM »
If my serving pressure is less then my carbing pressure won't it slowly loose carbonation?


Yes, if you carb at 16 psi and serve at 8 psi, it will eventually equalize, thus, becoming carbed to 8 psi.  This will take a few days though.

I don't quick carb, but I've heard of others on here that only quick carb at their serving pressure.  Set it to 8 and shake the cold keg, then you will never have to worry about over carbing your beer.
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Offline tschmidlin

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Re: Quick, quick carbing question?
« Reply #11 on: October 30, 2011, 02:38:16 PM »
Yep, it will lose carb as you pour beers.  But having different lines isn't that big of a deal if you plan for it, you can get by with a few different lengths that you can swap out as you change kegs.  Threaded fitting are really helpful.
Tom Schmidlin

Offline dzlater

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Re: Quick, quick carbing question?
« Reply #12 on: November 02, 2011, 03:04:39 PM »
If my serving pressure is less then my carbing pressure won't it slowly loose carbonation?


Yes, if you carb at 16 psi and serve at 8 psi, it will eventually equalize, thus, becoming carbed to 8 psi.  This will take a few days though.

I don't quick carb, but I've heard of others on here that only quick carb at their serving pressure.  Set it to 8 and shake the cold keg, then you will never have to worry about over carbing your beer.
But then it would be under carbed?
Dan S. from NJ

Offline dzlater

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Re: Quick, quick carbing question?
« Reply #13 on: November 02, 2011, 03:08:08 PM »
I looked at some "how to balance your keg lines" website.
And it seems I was serving at too low a pressure.
I set it to 15psi, it pours fast but doesn't foam up if I am careful.
Beer is staying nicely carbed.
Dan S. from NJ

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Re: Quick, quick carbing question?
« Reply #14 on: November 02, 2011, 04:04:22 PM »
I set it to 15psi, it pours fast but doesn't foam up if I am careful.

I'm guessing it hasn't had time to equalize yet. In 2-3 days it'll probably be over-carbed.
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