Carboy Caps are NOT Air Tight... What?

[BGBC]

Wow, not sure why I didn't think about a rubber band around the carboy cap. To the beer cave!

 

[day_trippr]

[...]Also this concept of a "blanket" of C02 over finished beer is a little misleading. Because the blanket can be disturbed by a number of things and it's not a solid, it's a gas. O2 can absolutely make it's way into your beer if there is O2 in your fermenter[...]

Completely true, but just a bit short: the CO2 "blanket" is a unicorn, a complete myth. It simply cannot exist in conditions short of a lab.

Which is a good thing, else we'd all be dead...

Cheers!

 

[AnOldUR]

I agree. For protecting our wort or beer it's a myth, but not a complete myth. CO2 can be poured and will flow to the bottom of a container, but diffusion is pretty quick. There's a report about a bunch of people and livestock being killed when a cloud of CO2 was released. It blanketed for long enough to suffocate them.

 

[jbaysurfer]

Completely true, but just a bit short: the CO2 "blanket" is a unicorn, a complete myth. It simply cannot exist in conditions short of a lab.

Which is a good thing, else we'd all be dead...

Cheers!

LOL...never thought of it that way.

 

[Artifishal]

So I bought a plastic conical. It's got a big screw on cap, like 12" big. The cap screws onto a big collar that was just screwed onto the conical with stainless screws. I was going to seal it with food grade silicone caulk. That would require me to carefully seal all the way around this cap collar, then put another bead around it in a way that the cap would hit it flush and seal. Then I was going to drill a hole for the airlock grommet and use an airlock. Ugh. After reading all four pages of this it sounds like I should just not even worry about it. Thoughts?

I'd like it to bubble because I like to watch it and check it several times a day to get a feeling for when it is about done and ready to transfer to secondary. View attachment ImageUploadedByHome Brew1418093691.030525.jpg

 

[ZebulonBrewer]

I can't really answer your question except to say that a nice O-ring at the seat of those threads in the lid might do 90% of what you want you to do.

My other comment is off topic Where'd you get that conical?

Happy Brewing!

ZB

 

[Artifishal]

Plasticmart.com

What do you think? It's a 15 gallon. Any input from anyone with thoughts or experience with these is greatly appreciated. View attachment ImageUploadedByHome Brew1418166442.548938.jpg

 

[Artifishal]

Well, I put a little more time in tonight getting it ready for the inaugural batch. No leaks...yet. Temperature testing now. I'd like to bottle right from this. You guys think, slowly stir in priming sugar or just use the priming pellets? View attachment ImageUploadedByHome Brew1418348045.552833.jpgView attachment ImageUploadedByHome Brew1418348085.459325.jpg