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Home Brew Forums > Home Brewing Beer > DIY Projects > Fermenters > turning this liquid oxygen tank into a fermenter
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Old 02-04-2009, 11:25 PM   #1
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Default turning this liquid oxygen tank into a fermenter

I working in the compressed gas business we have to take some old cylinders out of service. i found this one out back rusting away so i wondered if the inside stainless container was still in good shape.

i cut into the outer shell, and the vacuum was still good.


i pulled the inner container out and saw layers and layers of insulation.



after a little i was left with this. it holds about 25 gallons of liquid.




i dont think i need a fermenter this ig so i was thinking about cutting it down to be about 15 gallons, or even smaller.

what i need is ideas for how to do this. so far i am thinking about something like this.





any ideas as far as valves for racking and such, or a different way to make it open?

thanks

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Old 02-05-2009, 12:08 AM   #2
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Just cut out a hole in the top and use a corny lid with an airlock on it. If you're going to cut it down weld the two sections together.

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Old 02-05-2009, 12:13 AM   #3
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i want to be able to open it up and get my arm in there for cleaning. my arm wont reach the bottom of a corny, and probably wouldnt reach the bottom of this through a corny lid

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Old 02-05-2009, 02:45 AM   #4
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Im really new to this but the first thing that comes to mind is not a fermentor. Possibly a kettle, or cut in half for two kettles, or storage tank for kegging.

If you were to cut out the section I think it would be really hard to make a good seal, even with a gasket. Possibly could work if the ss is thick and the radially cut is perfect. Or if you can find a gasket that wrapes around the edge of the cut. Not an oring, unless you can route a bead in the steel. You could weld a flange on both halves to receive the gasket.

What is the volume, diameter, length

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Old 02-05-2009, 03:12 AM   #5
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right now it would hold about 25 gallons. from weld to weld its 38 inches. and its about 14 inches in diameter

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Old 02-05-2009, 03:28 AM   #6
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If it were mine I would cut it in half then add cones to the open ends, add a corny window to the top and botton plus 3 legs each for two app 14-15 gallon volume fermenters. Add a botton trub dump and racking arm to both. Small enough in diameter to place two together at once in the refigerator.
Lucky good find, where's mine?

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Old 02-05-2009, 04:17 AM   #7
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so where do i get the cones?

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Old 02-05-2009, 04:50 AM   #8
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Probably Toledo Metal Spinning. Not cheap... and then you'd want one of these: Konical Kitz™

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Old 02-05-2009, 05:10 AM   #9
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Quote:
Originally Posted by jonp9576 View Post
i want to be able to open it up and get my arm in there for cleaning. my arm wont reach the bottom of a corny, and probably wouldnt reach the bottom of this through a corny lid
buy or build a brush for cleaning? nice find
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Old 02-05-2009, 06:49 AM   #10
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Quote:
Originally Posted by jonp9576 View Post
so where do i get the cones?
The next reply has 16" hoppers at $172 and $205 each, way too expensive for me as they make this project add up in money rather fast.
Yesterday I was at my friends custom stainless fabrication shop for a couple hours helping and BSN. With all the marina's and boats on this island 90% of his work is for marine hardware railings or anything related with boats and stainless. Jet powered Ski-Doo he built for run yes he's a thinker and thinker also. A metal artist in stainless bar none.
I would have him slip roll me a set of cones if I had those SS tanks, it would be material cost only. A far cry from what Toledo is asking for their units. I have connections in many fields of work from my background.
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