National Homebrew Club Ireland

Brewing Discussions => All Grain Brewing => Topic started by: admin on January 07, 2013, 09:00:39 PM

Title: Has anyone fermented under pressure?
Post by: admin on January 07, 2013, 09:00:39 PM
Thinking of getting a 23L corny and a spunding valve and fermenting under pressure.

Anyone recommend anything other than a corny that I could use?
Title: Re: Has anyone fermented under pressure?
Post by: Will_D on January 07, 2013, 09:02:45 PM
QuoteThinking of getting a 23L corny and a spunding valve and fermenting under pressure.

Anyone recommend anything other than a corny that I could use?

Err, Why??
Title: Re: Has anyone fermented under pressure?
Post by: rukkus on January 07, 2013, 09:08:07 PM
I think i've seen that in messrs alright.
Title: Re: Has anyone fermented under pressure?
Post by: johnrm on January 07, 2013, 09:28:34 PM
No, but I think its a great idea.
I had a chat with Peter in the Well about it.
Apparently it works well when you know your indredients and specially yeast.
You need to cap your brew at a particular time.
Makes sense to do it in a Corny, the only thing is you're fermenting in the Corny, you're probably going to push up a lot of yeast with the first pint or so.
You could crash cool your primary, rack to Corny and complete the ferment here.
Title: Re: Has anyone fermented under pressure?
Post by: rukkus on January 07, 2013, 09:35:07 PM
It seems to be called spunding http://byo.com/stories/projects-and-equipment/article/indices/20-build-it-yourself/400-build-your-own-spunding-valve-to-carbonate-in-the-keg
Title: Re: Has anyone fermented under pressure?
Post by: Cambrinus on January 07, 2013, 09:45:01 PM
Yes, I also talked with Peter about this. As John pointed out, last few points of fermentation is done in airtight conditions. Never heard of it being done in a corny though. Interesting.
Title: Re: Has anyone fermented under pressure?
Post by: johnrm on January 07, 2013, 10:02:31 PM
@Cambrinus, OT, Are you kegging or bottling? I'm kegging (Very few bottles)
Title: Re: Has anyone fermented under pressure?
Post by: johnrm on January 08, 2013, 09:50:12 AM
From that link...
Is that not a regular ball-lock valve?
(It looks like gas-in but with a gas-out collar)
Why 23L and not 19L?
Your brew is not going to care what vessel its in.
Title: Re: Has anyone fermented under pressure?
Post by: rukkus on January 08, 2013, 11:07:40 AM
Some of the un approved hdpe water containers are pressure tested up to about 30 psi. Might be worth fitting a valve to one of those for a laugh.
Title: Re: Has anyone fermented under pressure?
Post by: DEMPSEY on January 08, 2013, 11:28:40 AM
Why not borrow a 30 L keg ::).
Title: Re: Has anyone fermented under pressure?
Post by: Partridge9 on January 12, 2013, 08:05:14 AM
Would you not be as well to do primary and when its at about 1015 - transfer it to the cornie to finish the job and get your carbonation ?

At least you avoid having all that gunk at the bottom of your cornie.

FYI - I tried it in december - almost by acciden - I moved my Hefeweiss too early, but I have to say it all was a PITA as the yeast blocked the out tube.

You could always get one of those pressure barrels and brew in that - ie - the 'king keg'.

Title: Re: Has anyone fermented under pressure?
Post by: johnrm on January 12, 2013, 10:09:01 AM
You could always lie your corny on its side...