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Old 04-27-2012, 05:20 AM   #21
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Originally Posted by onthedot
Those of you fermenting under pressure in a corny: what size batches are you doing?
With fermcap you can ferment 5 gal in a corny, with a net just shy of 5 gal after losses. Pressure helps reduce krausen also, but not at well as fermcap. I don't use fermcap though, and usually brew 12 gal batches and either split it between three 5 gal kegs (either corny or sankey) or between two 1/4 bbl kegs (7.5 gal). I use the same volumes regardless of whether I'm fermenting under pressure or not.
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Old 04-27-2012, 05:37 AM   #22
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Pressurized fermentation isn't documented other than through homebrewers. Does anyone know of a published "trial"?

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Old 04-27-2012, 05:57 AM   #23
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Originally Posted by onthekeg
Pressurized fermentation isn't documented other than through homebrewers. Does anyone know of a published "trial"?
Pressurized fermentation is probably more common among microbreweries than it is among homebrewers. Many of them use it to at least partially carbonate their beer. I seem to recall reading somewhere about rogue using pressurized fermentation as a tool to get the clean maibock flavors with a top fermenting yeast and ale temps for their dead guy ale. A German brewing scientist by the name of Dr Wellhoener did quite a bit of research in the 50's, and several others have also done studies since then. Many of the changes in levels of fermentation byproducts seem to be strain dependent, which has caused conflicting reports as to the exact effects of pressurized fermentation.
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Old 04-27-2012, 12:43 PM   #24
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5 in a 10.

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Old 05-22-2012, 06:46 PM   #25
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My valve arrived last night, now I am making a list (and checking it twice) of the other pieces to get this project finished up.
I'd like to source my gauge locally from one of the big boxes or even my Mom & Pop Hardware.
Is there anything special I should ask for in this gauge?
Just a 30psi pressure gauge?

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Old 05-22-2012, 07:06 PM   #26
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Subscribed. I think I may just have to try this out!

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Old 05-22-2012, 07:07 PM   #27
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I wouldn't consider that using a spunding valve to be considered "rough duty".... a simple/inexpensive gauge should suffice. Yes...0-30psi.

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Old 05-22-2012, 10:02 PM   #28
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I think I prefer fermenting in a sanke. The cornies are just too small, my opinion. With trub loss, etc, it's less than a full keg. There's nothing at all wrong with doing it this way, mind you. Beats the crap out of siphoning. Lot's of pluses. But I think the sanke is the way to go. You can build a similar spud valve and use a keg tapper.

Very nice valves, though guys. I'll be curious to see if you don't move on to a sanke.

Cheers.

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Old 05-23-2012, 12:47 PM   #29
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Quote:
Originally Posted by Dgonza9 View Post
I'll be curious to see if you don't move on to a sanke.
I JUST sent an email to my LHBS asking if if he could locate a quarter barrel or a larger Corny for me! I absolutely agree with you that the size is severely limiting. My last batch lost a bunch out the blow-off (still building the spud) tube. I boil with Fermcap-S, but I haven't added any post-boil. Now it seems that its use at all may be suspect, so I am questioning if I should continue to use it.
I am not going back to fermenting in glass, though, unless it is for a wicked special brew/reason. The benefits of fermenting in the keg just far out-weigh fermenting in glass, IMHO. Until you shatter one of those puppies, you really will not know what I am talking about. Potentially lethal.
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Old 06-02-2012, 07:44 PM   #30
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Quote:
Originally Posted by CS223 View Post
The Norgren valve has 1/4" NPT female inlet & outlets and it has two 1/8" NPT female gauge ports which can also be used for attaching additional kegs to the same spunding valve with the addition of check valves. Two socket head plugs are included with the valve to plug the gauge ports if they aren't used. The valve disassembles without tools for cleaning. The adjustment knob is like that on the current Tap-Rite regulators, pull out to adjust, push in to lock.
CS223, I finally gathered all my parts and assembled my spunding valve. I then pressurized a corny and attached the valve. I heard and felt CO2 escaping from the socket head plugs. What the heck sized Allen key do you need on these things? I'm fairly certain that my ancient set is standard, not metric, but none of them fit to drive them home. Also, did you bother to tape the threads on these plugs?
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