Can I just loosely put the lid on this fermentor and use no valve at all? - Home Brew Forums

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Old 01-16-2014, 07:21 PM   #1
Elysium
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I have just bought this nice 6 gallon fermentor in Spain.

The top of it has 2 parts....a blue part that kinda clicks on to the neck of the fermentor and then this black screw-on part that kinda makes sure it wont come off.

I really dont wanna cut a hole on that blue plastic because it is some kind of fine (and soft) plastic.

Can I just loosely screw the black part on and maybe wrap the top of the fermentor in aluminium foil and just ferment it like that with success?

Any thoughts on this?


UPDATE: A friend eventually cut a hole on it.....a slightly loose one, meaning that it sits in the whole firmly, but you need really little force to pull it out....so the Co2 will probably just come through that hole (By now there should be activity in the valve). I am wondering if that's okay...
By the way...krausen never reaches the valve..so that's not an issue.
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Old 01-16-2014, 07:26 PM   #2
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Yes you can, no problem with that plan. Once fermentation subsides (the krausen falls) loosely tighten the lid so air can still escape....the headspace of the vessel stays filled with CO2.
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Old 01-16-2014, 07:31 PM   #3
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Could be messy during initial fermentation if a batch goes nuts. but otherwise it's fine.
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Old 01-16-2014, 07:31 PM   #4
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Quote:
Originally Posted by helibrewer View Post
Yes you can, no problem with that plan. Once fermentation subsides (the krausen falls) loosely tighten the lid so air can still escape....the headspace of the vessel stays filled with CO2.
Thanks for the reply....do you think the aluminium foil is an overkill though?

 
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Old 01-16-2014, 07:33 PM   #5
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I don't think you need the foil,just don't tighten the black sealing ring too much. Nasties & wild yeasts aren't ninja acrobats,they more or less float straight down. Unless you have a fan blowing,window open,etc.
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Old 01-16-2014, 07:33 PM   #6
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Should work either way.

 
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Old 01-16-2014, 07:45 PM   #7
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Quote:
Originally Posted by unionrdr View Post
Nasties & wild yeasts aren't ninja acrobats,they more or less float straight down. Unless you have a fan blowing,window open,etc.
Or you have kids or pets, or you walk by, or you open a door, or . . . .

Most of the time you'd be fine, but you have to ask yourself, "How lucky do you feel?"

Personally, I'd drill a hole and use a grommet and an airlock.

 
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Old 01-16-2014, 07:51 PM   #8
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As long as you have outgassing of CO2 you shouldn't have to worry about anything getting in. After fermentation subsides tighten the black sealing ring a bit (not all the way). Check occasionally to see how much pressure has built up and relieve as needed.

 
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Old 01-16-2014, 07:54 PM   #9
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Well,as far as that goes,our kids are grown,the dog can't get near them & the cat doesn't care for the smell. Lil bastard. My other cat's liked beer,or wouldn't eat their food without ketchup! A cat that doesn't like the fishy smell...WTF? But the front door is right by the man cave,& I haven't got the French doors put up yet. But to be precise,I prefer all my fermenters to have sealed lids with three piece airlocks.
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Old 01-16-2014, 08:34 PM   #10
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Its minimal effort to add an airlock so personally I would add one. Both a lose lid and an airlock will work, I think in reality it would provide very little extra assurance from contamination.

 
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