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Blowoff Assembly for PET Fermentors


SKU# 40289

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#10 Stopper and hose to contain blowoff during primary fermentation of beer in a narrow-neck plastic carboy such as our standard Bubbler® or Better Bottles. Will not fit standard glass carboys or Big Mouth Bubbler fermentors.


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Product Details

#10 Stopper and hose to help contain blowoff during primary fermentation of beer in a plastic carboy such as our standard Bubbler® or Better Bottles.. To use, put sanitized assembly in mouth of carboy and place end of hose in a bucket of water or sanitizer. Will not fit standard glass carboys or Big Mouth Bubbler fermentors.

Additional Information
Support Documents:No
3.2 / 5.0
31 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Stars
Overpriced....unnecessary purchase
This EXACT setup can be made for $3.00 and a trip to the hardware store.
April 18, 2012
Home brew
I use to brew a lot of beer years ago and still had most of my equipment stored in the basement.Just decided to start doing again forgot how good it was. Had to get a few parts I was missing and really glad I found this sight. Great prices and fast service. I would reccomend this company to anyone that brews beer!
October 9, 2015
Mandatory item for high gravity brews
As the summary indicates, this is a mandatory item for high gravity brews. You can get a high co2 rate that'll overwhelm a bubbler. This work perfectly, put the end in a jar of water to prevent anything from getting into your fermenter.
November 20, 2010
Works just fine!
I bought this blowout even after reading the prior review. It is true the the tube slide pretty easily thru the hole which initially seemed to be too big. However, when you press the bung into your carboy, it compresses onto the tube and creates a good seal. I have a high gravity porter fermenting very vigorously right now and have no leaks to report.
February 8, 2010
Nice to have when you need it.
I bought this thinking I'd never need it making 5 gallon batches and using a 6.5 gallon better bottle. Well after coming home to an airlock ready to explode, I was sure happy I had this little beauty sitting around. I sanitized it with Star San and put the hose through the bung before placing it into the carboy. Never a problem sealing it. I would say that it is a good idea to unroll the tubing and try to straighten it out prior to use. It has a ton of memory, reminding me of fishing line that's new.
February 25, 2012
Works fine
I inserted the stopper and tube into my BetterBottle at the same time. Both were set firmly in place with ease and have held in place during vigorous fermentation.
January 3, 2012
Works amazingly well
I jumped on the 2 for 1 deal with the Bubbler carboys & picked up one of these so I could use for primary.I have to admit I was quite worried about the blowoff tube getting plugged (since I'm used to working with the 1" tube on glass carboys).I just put a batch of Winter Warmer into primary on Saturday & it is working like a charm. I did see problems with the bung slipping at first, but I also just set it on top of the carboy for a few minutes & inserted it once it was dry. No problems.
October 29, 2013
Good product(s)
If anyone is new to brewing, as i am, it takes some patience to get used to knowing what will work. This is fun so far. I think the key to enjoyment of the process is setting your work space and equipment up in advance, so you do not get frustrated. I am using the larger stopper with the hole in it and a 3/8" tubing I bought at a hardware store. Looking good so far. Now I am waiting for 5-10 days. I have been reading so much about brewing, I am feeling really brave--like I might try "dry hopping". Thanks for getting me started.
August 8, 2010
Works fine when you apply simple principal
Make sure you press the stopper into the carboy with the tube in place. It seems too big at first, but when you push in the stopper, it's air tight.
February 22, 2010
Please note that this product is meant for use on a Better Bottle Carboy. If you use it on a glass carboy it will not fit properly.
February 15, 2011
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Browse 2 questions Browse 2 questions and 2 answers
What is the ID / OD size of the tubing?
A shopper on Apr 22, 2017
BEST ANSWER: The tubing is 1/2" ID siphon hosing which is technically 7/16 ID and 9/16 OD
It says this blow off assembly is for PET fermentors. Why can it not be used with glass carboys? What should be used with glass instead?
S T on Sep 14, 2015
BEST ANSWER: The PET blow off will only work for PET carboy because the opening is larger than a glass carboy

so it will not fit in the opening. For glass carboys

we sell a large hose that fits right in the neck as a blow off: http://www.northernbrewer.com/shop/1-id-blow-off-hose

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