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Old 05-08-2009, 07:41 PM   #1
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Default Airlock on a corny

I used to ferment in a corny due to the size of my freezer (couldn't fit a carboy well). I used some 3/8" ID silicone tubing to go over the threads and hold the airlock to the keg.

I took the gas side post off to stretch the hose over the threads.

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Old 05-08-2009, 07:42 PM   #2
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So much easier than those special lids with an airlock hole....

Good call.


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Old 05-08-2009, 09:16 PM   #3
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I've got a Firestone keg with a bad relief valve. Since the whole assembly is plastic, I've thought about putting a grommet in for an airlock. The only problem I could see is since the lid tends to need pressure to seal, I'd be afraid of some kind of nasty getting in past the lid o-ring.
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Old 05-08-2009, 09:26 PM   #4
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extra lid, plastic relief. pretty easy. you should always have extra parts for your kegs.

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Old 05-08-2009, 09:29 PM   #5
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I got a corny several months ago for $5.00 b/c it would not hold pressure. One of the posts is bad; I can't remember now which one. I bought a small diameter drilled rubber stopper and planned to do something similar. Thanks for posting this. It's the kick in the butt I needed to remind me to do this!
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Old 05-09-2009, 12:58 AM   #6
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i've used corneys for secondaries... have u used them for primaries?
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Old 05-09-2009, 02:51 PM   #7
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Yes I used them for primary, I did a 4.5-5 gal batches with foam control drops.
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Old 05-19-2009, 04:12 PM   #8
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I was thinking of doing lagers in the primary here, but I'm concerned about how full to make the corny keg. I shoot for 5.5 gallons of wort to end up with a full keg at the end after racking, etc. If I fill up the corny to the top for primary fermention, won't the foam go nuts and get everywhere? Would that hurt yeast performance, I would guess.
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Old 05-19-2009, 04:15 PM   #9
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With foam control drops you can get it pretty full, you won't end up with 5 gallons to keg though, you'll loose some to the needed headspace and some to the trub. I would say the max is around 4 gallons of finished beer in kegs/bottles.


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Secondary: Shady Lord RIS, Water to Barleywine, Pumpkin wine, burnt mead
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