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Old 06-14-2009, 03:18 AM   #1
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Default DIY Chilled Conical/Keg Fermenter

Some of you may remember my last DIY conical thread. The old design worked great, but there really wasn't a practical way to get it to hold pressure (for transferring the contents without a pump or gravity). Well, here's the solution!

Parts:
1/2 bbl keg (thanks again, Boston!)
TMS Conical Hopper (21 gal)
Corny lid
Corny post fitting
Gas-in post
Ball valve/fitting for dump/transfer (not shown in this post)

Assemble as shown below. The keg is upside down because the bottom of the keg had no ridges to interrupt the Corny lid seal. I've pressure tested it to 10 psi with no issues at all. The total volume is 18 gallons.





I'm going to use the rest of the TMS hopper to make a cooling jacket around the straight sides of the keg. My old kegerator will serve as the glycol chiller.

Expect progress to be painfully slow (as has been the case with most of my projects over the past year). I've gotten pretty busy! I promise to keep the thread updated as the project unfolds.

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Old 06-14-2009, 04:01 AM   #2
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That is one of the coolest things I have ever seen!!!

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Old 06-14-2009, 04:27 AM   #3
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Yuri,

Is the conical hopper Tig welded to the keg? Nice project!

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Old 06-14-2009, 04:30 AM   #4
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Yes. All of the welding was done with my TIG machine.

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Old 06-14-2009, 06:45 AM   #5
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More picts! That thing is freeken KILLER!

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Old 06-14-2009, 06:52 AM   #6
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Yuri
If you used a 21 gallon hopper from TMS + a 15.5 gallon keg. How is this only 18 gallons? Am I missing something?

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Old 06-14-2009, 01:35 PM   #7
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Quote:
Originally Posted by Yuri_Rage View Post
Yes. All of the welding was done with my TIG machine.
Thanks Yuri. Oh well, another project that I would like to build that will become a pipe dream because I don't know how to TIG weld. I have a Miller MIG machine here at home that I used to build my BBQ smoker but TIG is another matter. That adult education welding class is starting to look interesting now.
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Old 06-14-2009, 01:37 PM   #8
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Good heavens, it's alive!!

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Old 06-14-2009, 04:11 PM   #9
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Jay, I cut the bottom 12" of the big hopper off and welded it to the keg. That portion holds about 2.5 gallons. The rest of the hopper will become the cooling jacket.

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Old 06-14-2009, 04:15 PM   #10
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That's awesome! I'm impressed. Make sure you keep us posted on the cooling jacket, too.

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