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Home Brew Forums > Home Brewing Beer > General Techniques > Closed-system pressurized fermentation technique!
View Poll Results: What do you guys think about pressure fermentations? Time for a poll.
I've done it and I liked it just fine! 83 11.16%
I've done it, nothing wrong with it, but prefer normal fermentation techniques. 21 2.82%
I've done it, hate it, and never will do it again! 4 0.54%
I've never done it, but it is on my list! 556 74.73%
I've never done anything. I only brew beer in my mind. 80 10.75%
Voters: 744. You may not vote on this poll

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Old 01-23-2013, 05:18 PM   #1651
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Originally Posted by WortMonger View Post
All you need to do is attach both gas ports on your kegs to some sort of manifold with the spunding valve at the end for control of both kegs at the same pressure. I have also wondered about daisy-chaining the kegs together gas on first to liquid on second, and then using the spunding valve on the gas side of the second. But, I don't know how that would work out and it would definitely only work with the same beer.
Yeah, you'd need to use some kind of water trap in between each one unless you want to dose each downstream keg with upstream yeast. Plus, with any pressure drops you'll be sucking beer into other kegs. I don't see any reason why it wouldn't work in theory, but a simple manifold would be a lot easier and cheaper.
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Old 01-23-2013, 10:32 PM   #1652
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just reading through some older pages of this thread from a few months back, and i'm about to ferment a batch where i want to fill my corny as high as possible.
sorry if this is detailed elsewhere, you can maybe point me to it, but could you describe this water trap? or if others use something (pressurized) between keg and spunding valve? sounds like exactly what i need. thanks
I use a keg between my keg and spunding valve for that.


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Old 01-24-2013, 04:12 PM   #1653
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http://www.williamsbrewing.com/KEG-P...LVE-P2880.aspx

Is this what I need to ferment in a corny using this method? I Have a 10 gallon corny keg I think would work good for this. Thanks!
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Old 01-24-2013, 07:37 PM   #1654
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Originally Posted by 67cougargt View Post
http://www.williamsbrewing.com/KEG-P...LVE-P2880.aspx

Is this what I need to ferment in a corny using this method? I Have a 10 gallon corny keg I think would work good for this. Thanks!
That is the one I bought and am using. 2 comments.

1.) I changed the gauge out for one that reads higher, this one only goes to 15psi. I bought this 0.60 PSI gauge and swapped it out.

2.) The valve does get gummed up and will get stuck if blow off gets into it. Simply unscrew and rinse it out & sanitize again. I used fermcap but still had an issue. I'll probably be modifying this to add a catchment tank inline as others have done.
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Old 01-24-2013, 07:39 PM   #1655
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Quote:
Originally Posted by WortMonger View Post
All you need to do is attach both gas ports on your kegs to some sort of manifold with the spunding valve at the end for control of both kegs at the same pressure. I have also wondered about daisy-chaining the kegs together gas on first to liquid on second, and then using the spunding valve on the gas side of the second. But, I don't know how that would work out and it would definitely only work with the same beer.
Quote:
Originally Posted by MalFet View Post
Yeah, you'd need to use some kind of water trap in between each one unless you want to dose each downstream keg with upstream yeast. Plus, with any pressure drops you'll be sucking beer into other kegs. I don't see any reason why it wouldn't work in theory, but a simple manifold would be a lot easier and cheaper.
Thanks guys.

I already see room for improvement w/ the current experiment. I'll be adding a manifold and catchment tank to the current setup once the current batch is done.
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Old 01-24-2013, 07:44 PM   #1656
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Originally Posted by Peter_h View Post

That is the one I bought and am using. 2 comments.

1.) I changed the gauge out for one that reads higher, this one only goes to 15psi. I bought this 0.60 PSI gauge and swapped it out.

2.) The valve does get gummed up and will get stuck if blow off gets into it. Simply unscrew and rinse it out & sanitize again. I used fermcap but still had an issue. I'll probably be modifying this to add a catchment tank inline as others have done.
Does the gauge need to go that high?
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Old 01-24-2013, 08:03 PM   #1657
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Originally Posted by 67cougargt

Does the gauge need to go that high?
If trying to carb at room temp, it needs to go past 15psi. Somebody in the know, at what pressure does yeast stop releasing co2?
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Old 01-24-2013, 08:15 PM   #1658
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Originally Posted by jeepinjeepin

If trying to carb at room temp, it needs to go past 15psi. Somebody in the know, at what pressure does yeast stop releasing co2?
I'm not sure, but it's high. I had a batch sneak north of 60 once.
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Old 01-24-2013, 08:27 PM   #1659
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Originally Posted by MalFet

I'm not sure, but it's high. I had a batch sneak north of 60 once.
Oh, wow. I wasn't expecting that answer.
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Old 01-24-2013, 08:43 PM   #1660
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Originally Posted by jeepinjeepin

Oh, wow. I wasn't expecting that answer.
The literature varies on where yeast is happiest, but I tend to sit near 5 for most of the fermentation the cap up to 25 or so at the end. Certainly there's no trouble at that range.
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