Blow off tube for better bottle

Dixon · Apr 19, 2014

Doing a RIS that I wouldn't be shocked if an airlock didn't hit the ceiling. Want to do a good size blow off tube. Was at the lhbs yesterday and the guy said the the mouths of the plastic carboys are a different size than glass and finding a tube to fit was impossible. Is this true? Suggestions? Hose sizes?

Thanks!

breckenridge · Apr 19, 2014

What I've done is cut off the bottom of an airlock, attached 1/2" silicone tubing with a hose clamp, and stuck the airlock end into the stopper - has worked fine for me. Good luck!

two_hearted · Apr 19, 2014

I use one of these and stick a piece of tubing in the hole.

kh54s10 · Apr 19, 2014

Too late (probably) for this one but Northern Brewer sells a blow off assembly. It is a #10 stopper with a bigger hole drilled in it and vinyl tubing. I think it is 7/16" OD. 1/2" ID. I have never had one clog. Yet!

PackerfaninSanDiego · Apr 19, 2014

Got a 3 piece airlock? remove the two loose pieces(cap and floaty thingie), slide 1/2" tubing over airlock tube

oldwhiskers · Apr 19, 2014

I got the better bottle big blow plug that allows a 3/4" pipe thread for a hose barb and hose, a bit pricey but it works good.

Shack01 · Apr 24, 2014

oldwhiskers said:
I got the better bottle big blow plug that allows a 3/4" pipe thread for a hose barb and hose, a bit pricey but it works good.

That's what I do too!

I have the bung that allows for a 3/4" npt fitting that I built a 'blow-off' tube for initial fermentation. If I'm dry-hopping I'll switch over to the standard Better-Bottle bung, with the air-lock (as illustrated by two-hearted) otherwise, I'll just leave the 'blow-off' on until I'm ready to bottle.

http://photobucket.isnt.working.now So I guess I can't post the video of my (New Glarus) IIPA clone in the carboy...

Dixon · Apr 25, 2014

Shack01 said:
That's what I do too!

I have the bung that allows for a 3/4" npt fitting that I built a 'blow-off' tube for initial fermentation. If I'm dry-hopping I'll switch over to the standard Better-Bottle bung, with the air-lock (as illustrated by two-hearted) otherwise, I'll just leave the 'blow-off' on until I'm ready to bottle.

http://photobucket.isnt.working.now So I guess I can't post the video of my (New Glarus) IIPA clone in the carboy...

Man that's nuts and awesome!

dobe12 · Apr 25, 2014

PackerfaninSanDiego said:
Got a 3 piece airlock? remove the two loose pieces(cap and floaty thingie), slide 1/2" tubing over airlock tube

Yup. I have 2 permanent blowoff tubes setup like this. Make sure to cut the plastic X off the bottom of the airlock. They can get clogged and create a blockage. Ask me how I know this

Dixon · Apr 25, 2014

Thanks all for the replies! What I ended up doing was taking a #10 bung and drilling out the airlock hole to 1/2 inch on my press. I wallowed it out a bit and stuck some 5/8" od 1/2" id tubing I picked up at home depot in the new hole. Thinking it should work fine.

dobe12 · Apr 25, 2014

Like this, but inserted into the better bottle bung.

mneilson · Apr 25, 2014

dobe12 said:
Like this, but inserted into the better bottle bung.

This is what I do as well....works great.

Snicklefritz · Apr 25, 2014

dobe12 said:
Like this, but inserted into the better bottle bung.

+1 me too. Except I don't even use the airlock.. Just insert the hose right into the BB bung. Its a very tight fit.

govner1 · Apr 25, 2014

PackerfaninSanDiego said:
Got a 3 piece airlock? remove the two loose pieces(cap and floaty thingie), slide 1/2" tubing over airlock tube

^^^^this is what I've used successfully for several years. Put the end of the tube in a 1 gal bottle about half full of StarSan.

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bikesnbeers · Apr 25, 2014

Here's what I do...

ImageUploadedByHome Brew1398478977.633287.jpg

ImageUploadedByHome Brew1398479001.035016.jpg

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blaster_54738 · Apr 26, 2014

Dixon said:
Thanks all for the replies! What I ended up doing was taking a #10 bung and drilling out the airlock hole to 1/2 inch on my press. I wallowed it out a bit and stuck some 5/8" od 1/2" id tubing I picked up at home depot in the new hole. Thinking it should work fine.

That's exactly what I did. Has never failed me

glenn514 · Apr 26, 2014

I bought a drilled #10 stopper and took it to the hardware. Found the tubing that would fit very snuggly in the hole and bought 4 feet of it. Shoved it into the stopper hole and I've been good to go for years!

glenn514 :mug:

jimmayhugh · Jan 10, 2015

I have something similar:

I included a BrewersHardware 16" thermowell, so I can monitor the temperature of the wort.

I've been using these for over two years, and have no problems with even the most vigorous fermentations.

bmc1313 · Jan 10, 2015

I use one of these style stoppers

http://www.northernbrewer.com/shop/universal-bung-medium-fits-better-bottles.html

with a 1/2" ID (I think) silicone tubing that fits over the center part. has worked very well for several very active batches.

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Blow off tube for better bottle

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