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Home Brew Forums > Home Brewing Beer > Beginners Beer Brewing Forum > blowoff tube for bucket
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Old 01-01-2010, 01:15 AM   #1
bdaddy
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Default blowoff tube for bucket

I have the basic 6.5 gallon buckets that are sold from midwest. The lid has a small hole (within the rubber gasket) for the airlock.

I'm wanting to brew Biermuncher's SWMBO slayer and understand it can kick up quite a bit of fermentation activity. I may be safe with 6.5 gallon fermenter (thoughts?), but if I'm not...what do people use for a blowoff when the lid hole is so small? On the better bottle/carboys you can insert a properly sized stopper or tube, but I haven't seen such a thing for these bucket lids.

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Old 01-01-2010, 01:30 AM   #2
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Bottom part of a 3 pIece airlock with some 5/16" (i believe) inner diameter tubing. It will slide over the post of the airlock and make a decent blow ofF. Make sure that the bottom doesnt have the 4 way cross piece. either break or dremel that off.

i do all my brews that way. Works great.

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Old 01-01-2010, 01:49 AM   #3
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The cheapest and easiest way is to push a small tube through the opening and then fit a larger longer tube over it. But, I've just seen it done and never used one myself. I thought that with a 6.5 even a gallon of headroom was enough for most krausens. Here is a Youtube link to this guy who says he always uses a blow off with his 6.5's... hard to tell exactly how his blow off rig is made but I picture a small tube inside a larger one.

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Old 01-01-2010, 04:28 AM   #4
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I had a hefe start blowing through the airlock and replaced it with the tubing from my racking kit. The tube fit pretty snug through the hole in the lid. Worked like a charm.

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Old 01-01-2010, 04:49 AM   #5
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Quickly pull it out and clean and re sanitize it, then rig up an airlock blowoff tube...take your bottling wand, put a small slit in it...Heat it for a few minutes in hot water to soften, then do this.





then you'll be fine.

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Old 01-01-2010, 02:24 PM   #6
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Eureka! Thanks Revvy. So what are the conditions that require a blow off tube? Or do you just do it all the time? If I have 5.5 gal of 1.051 an AG stout in a plastic 6.5 do I need one?

Thanks and HNY!

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Old 01-01-2010, 03:33 PM   #7
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Quote:
Originally Posted by Netflyer View Post
Eureka! Thanks Revvy. So what are the conditions that require a blow off tube? Or do you just do it all the time? If I have 5.5 gal of 1.051 an AG stout in a plastic 6.5 do I need one?

Thanks and HNY!
Well there's really no way to tell what conditions. I've only really ever had one blowoff, and that was pitched on a yeast cake, but I've pitched other beers on top of other cakes and never needed one.
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Old 01-01-2010, 06:07 PM   #8
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I brewed a stout yesterday. no blow off on the fermenter. got an explosion overnight. I now highly recommend a blow off. I'll use fermcap S next time.

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Old 01-02-2010, 12:09 AM   #9
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The 3/8" supply tubes, either copper or cross linked polyethylene, for faucets, dishwashers, and toilets, will fit inside the grommet rather snugly. Either get several feet of the tubing, or a short piece and slide your 3/8" tubing that you use for bottling over that and use a small ziptie to cinch it down.

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Old 01-02-2010, 12:13 AM   #10
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Quote:
Originally Posted by doghousechef View Post
I had a hefe start blowing through the airlock and replaced it with the tubing from my racking kit. The tube fit pretty snug through the hole in the lid. Worked like a charm.
I started doing this too. Rather than attaching the rubber hose to the airlock, just stick it in the rubber grommet in the lid. It does the same thing and isn't a pain in the rear disconnecting the hose from the airlock if/when you want to use it next.
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