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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 11-23-2010, 07:02 PM   #561
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Not from my experience. Granted, that is one batch. But I just cleaned the primary corny keg, and there was a nice thick krausen ring at the top of the keg. I didn't have a problem because I stepped down to 4 gallon batches. I'm sure a littler fermcap-s would help a bit.

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Old 11-23-2010, 08:51 PM   #562
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Can't speak to fermenting under pressure, but I routinely use fermcap and have had zero blowoff when fermenting in a corny keg. I can't say enough about it....it's truly one of the cheapest and most useful items...lasts years and it has prevented many a boilover!

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Old 11-23-2010, 09:33 PM   #563
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Quote:
Originally Posted by Randar View Post
Does the pressure prevent the build-up of the krausen?
Yes, top pressure limits krausen height.
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Old 11-23-2010, 11:29 PM   #564
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It limits the height but does nothing about the ring. It will still be there, just helps to keep the stuff from reaching the top of the keg (In Most Cases... 15 gallons in a 15.5 gallon keg had about a cup of liquid come out my exit point). Next time I will use fermcap, or build my wanted newest device. Have I said how much I love pressure fermentation???

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Old 11-23-2010, 11:39 PM   #565
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Well that was the longest read of my Homebrewtalk life.

Here's a question though. I would prefer to still ferment in my carboy's. I would however transfer my beer to my Corny, w/pressure relief valve, prior to fermentation is 100% complete. This should give me me adequate c02 to naturally carbonate my beer...if I've read all this correctly.

This got me thinking though. In theory couldn't you just:
1. Ferment in a Conical with a Blowoff.
2. Once the beer is 70-80% fermented, collect your yeast from the conical.
3. Remove the blowoff and seal the conical so the beer creates 10-15psi worth of pressure.
4. Then once the Beer is finished/carbed hook up the pressurized Conical straight to your tap and use it as a Bright tank?

Of course this would require some sort of Conical that can with stand at least 20psi Plus a safety net. Also be able to handle a both a Spunding connection and a blowoff tube.

I have yet to find a product that can do that. (inform me if I'm wrong)

Only other way I see this happening is by DIY and with someone who has the balls to convert a Keg into a Conical.

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Old 11-23-2010, 11:55 PM   #566
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Yep, you can just transfer to a corny with 20-25% left of your gravity, but why? You will have to transfer again to get off the yeast that drops out. Most of us only use a primary for this very reason. It is only different in my case that I have a carbonated product at the end of primary.

Yes, your questions are correct... but finding this product is impossible. I would only take a conical if it could hold 60 psi, just to be sure for future stuff/wine/cider/soda. A Sanke or Corny are already built for this pressure and are perfect for fermentation, so why not-not use one?

You should check out Yuri's homemade conical build... that guy is a MANIAC with his brew-porn. I have to meet him one day and shake his hand and buy him a plethora of beers (among others)! Yuri Rocks Out with His... well you get the point.

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Old 11-23-2010, 11:59 PM   #567
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Well... see that's how much I know about all this sciencey brew stuff. I think I'm going to try and do a 4.5g batch in this corny the next time... 4 gallons had zero blowoff

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Old 11-24-2010, 12:04 AM   #568
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Quote:
Originally Posted by WortMonger View Post
Yep, you can just transfer to a corny with 20-25% left of your gravity, but why? You will have to transfer again to get off the yeast that drops out. Most of us only use a primary for this very reason. It is only different in my case that I have a carbonated product at the end of primary.

Yes, your questions are correct... but finding this product is impossible. I would only take a conical if it could hold 60 psi, just to be sure for future stuff/wine/cider/soda. A Sanke or Corny are already built for this pressure and are perfect for fermentation, so why not-not use one?

You should check out Yuri's homemade conical build... that guy is a MANIAC with his brew-porn. I have to meet him one day and shake his hand and buy him a plethora of beers (among others)! Yuri Rocks Out with His... well you get the point.
Well that cleared it all up for me.
Also, the reason i don't want to ferment 100% in one corny is because I don't want to trade beer space for head space. Maybe when I get around to picking up some Sankey's I'll do it.

Yeast in the bottom of my corny is exactly what led me to think of a Conical.
That's too bad. Someone should get on making a Conical that can hold some pressure.

How much yeast could possibly be left in a secondary fermentation situation? In my experience I haven't had that much left. Most of my beers don't stay around longer then 2-3 weeks either, so dead yeast shouldn't be an issue i think.

It's all worth exploring though. Would save me money on buying so much damn c02.
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Old 11-24-2010, 12:26 AM   #569
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Go for it then. I was just saying from my opinion and from my experience. It will work well in your situtation to do a spunded secondary. I only use CO2 for transferring in my brewery, not that it is that expensive or anything. I really want to krausen a beer before too long too.

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Old 11-24-2010, 02:36 AM   #570
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Definately inspired. Might have to extend the ol' xmas list to santa this year.

Thanks
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