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Old 02-19-2011, 12:03 AM   #1
HH60gunner
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I just ordered a 2 keg setup that should hopefully arrive soon. Does soda carb up just the same as beer? The kit I have doesn't have seperate regulators, so if I set the pressure to my serving temp for the beer will they both carb up just fine? Or do sodas require any more pressure?



 
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Old 02-19-2011, 02:43 AM   #2
FrewBrew
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Soda requires a lot more pressure.... generally 25-30 psi from what I recall.


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Old 02-19-2011, 02:52 AM   #3
r2eng
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Not from my experience. I carb the same way, and my ginger ale and root beer are great at 12 PSI. That being said, I have 12' of 3/16" ID tube.

I serve 4 kegs at 12 PSI: IPA, Porter, Oatmeal Stout and Ginger ale.

(check out the soda recipe section, too)
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Old 02-19-2011, 02:53 AM   #4
beninan
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Soda would require more pressure to increase the amount of carbonation.
Lets say on average (ok maybe not exact numbers, but bear with me) that beer has around 2 volumes of CO2, so 2 liters of CO2 for every liter of beer.
Soda on average requires 5-6 liters of CO2. So a greater pressure is required for CO2 absorption.
With increased pressure, requires increased serving pressure to prevent the soda from foaming up before it even reaches your glass. This can be accomplished in several ways.
I keep my soda pressurized to 25 psi @ 45 degrees F, with approximately 25 feet of 1/4 inch ID line for resistance.
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Old 02-19-2011, 03:04 AM   #5
HH60gunner
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some conflicting data there. So if I'm doing a cream soda I should be able to carb it at 12 psi as long as I get a longer serving tube?

 
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Old 02-19-2011, 03:10 AM   #6
beninan
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no you wouldnt need a longer hose for 12 psi due to the decreased amount of pressure, and you CAN carb at 12 psi. Don't get mis-guided by my previous post. 12 psi will carb it, but it will carbonate to a carbonation level similar to beer, which may be fine for you. A typical soda usually has two-three times more carbonation than beer. To get to that level, more pressure is needed, which in turn increases the risk of foam-in-a-glass. To prevent this, more resistance is needed, which would be to use a longer hose/a thinner hose/a soda-keg-dip-tube-agitator-resistor-thing
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Old 02-21-2011, 11:42 PM   #7
DoubleFisted
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Thanks! I have been looking for this! How about force carbonating though? Same as beer like between 30-40 psi?
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Old 02-22-2011, 09:58 PM   #8
beninan
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Unless you are burst-carbonating beer, you shouldn't carbonate it at 30 psi.
Soda does need to be carbonated at a higher pressure, but this can be accomplished by leaving it a serving pressure for 2-4 weeks, or by burst-carbing with a higher pressure.
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Old 02-22-2011, 10:07 PM   #9
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I keep my beer at 12 psi and my soda at 30 psi all the time. I don't usually change the pressures. In my experience, soda at beer pressure seems a bit flat.
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Old 02-22-2011, 10:08 PM   #10
beninan
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Beer at 10, soda at 25 here.


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