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Bubbler Airlock


SKU# 7008

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Fill the Bubbler Airlock with water and insert in drilled stopper or bung to vent gases during fermentation.


Availability: In stock

Bubbler Air Lock

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  • Bubbler Air Lock
Product Details

Fill with water and insert in drilled stopper or bung to vent gases during fermentation. "Bubbler" style airlock makes a gratifying "bloop" noise during active fermentation. It is the preferred airlock for secondary fermentation, as it is possible to monitor the pressure inside the fermenter.

Additional Information
Support Documents:No
4.2 / 5.0
56 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Stars
its an airlock.
It is an airlock. Not much else to report here. Try not to lose the red cap.
April 17, 2018
1 year ago
Dont use with buckets
Works good with bungs, with fermenting buckets... not so much. No where near airtight for the grommets on buckets.
April 16, 2018
1 month ago
My favorite bubbler
Of all the different air locks offered, this one is my favorite. Easy to clean, hard to break, and watching the bubbles go through is strangely gratifying...
April 14, 2018
3 months ago
Does.exactly what it's supposed to do at an economical price
February 9, 2018
2 months ago
My bubbles.....
"my bubbles" - some fish
some Pixar movie quote......................................................
February 3, 2018
3 months ago
Works great
I personally like this type of bubbler as opposed to the straight bucket type.
January 30, 2018
3 months ago
just what ya need
perfect fit for the products bought through the website
January 26, 2018
3 months ago
Works as it should!
I like these air locks because I like to time the bubbles towards the end of fermentation.
December 5, 2017
5 months ago
Does the job
An airlock isn't too technical. It has one job to do and this one does that job.
November 22, 2017
6 months ago
Great product!
I use this on my Big Mouth Bubbler® EVO 2 with the universal lid and it works great. I have several of the Big Mouth Bubbler® EVO 2 with these airlocks and have great success with them.
November 7, 2017
5 months ago
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Browse 9 questions Browse 9 questions and 23 answers
Do you keep the red cap on the airlock during fermentation? thanks Dave
C H on Jan 1, 2016

Sure, you can. It's not really that important. I've lost most of my red caps! They're nice for keeping fruit flies out of the airlock, but that's about it.


im brewing the Irish Ale and at almost 48 hours post-brew -- still little to no bubbling, and the water in the airlock fluctuates back and forth... Still normal?
Andrew B on Mar 2, 2016
BEST ANSWER: The water going back and forth is from temp. change. It's possible for there to be a lag before fermentation starts but I've never had one 48 hours. Maybe the yeast you pitched is dead or you didn't pitch enough.
Is this made out of glass or plastic?
Paul W on Feb 5, 2017
BEST ANSWER: These are plastic-durable and fairly easy to clean. Depending on what sanitizing solution you use will last and last for many batches...
Is a blow off tube necessary for this during the initial more vigorous fermentation?
A shopper on Dec 6, 2017
BEST ANSWER: I can’t say if it was 100% needed but I will always use the blow off tube during the primary fermentation to avoid having an issue. I’ll use the airlock bubbler during secondary fermentation. Hope this helps out. Cheers!
Can the bubbler airlock be used with small batch kits?
R M on Jan 12, 2016
BEST ANSWER: It could be, yes. If you use the 38 mm screw caps, those will only work with the three piece airlock. But if you have a rubber stopper in your fermentor, a three piece or S-bubble type will work in those. I hope that clarifies! Cheers!
So I put the sanitizer solution in my airlock and made sure that both sides were only filled to the "max" line on each side. No excess. But now that my beer has been sitting for about half an hour the air lock is almost full on one side and empty on the other. Why is this? How do I fix this?
B R on Dec 27, 2015
BEST ANSWER: It's supposed to do that. The out gassing pressure pushes the liquid to one side and then it starts bubbling. It won't go back to both sides until there is no more pressure aka secondary.
how tall is the airlock?
A shopper on Nov 14, 2017
BEST ANSWER: From top to bottom, it is 6 and a half inches. From where it would sit on your lid, once the airlock is put on, is 5 inches.
Does anyone know the outside diameter of the top of the airlock (i.e. the inside diameter of the red cap)? I would like to hook a tube up to the top of this airlock to capture CO2 and purge my secondary carboy, but need to know what diameter tube to get.
A shopper on Feb 1, 2017
BEST ANSWER: Hi there,
It's about 3/4" but can vary based on production. Cheers!
I got 2 of these with my starter kit. Have used them on my first 5 brews. I went out and bought a new S shaped airlock yesterday that came with a clear cap that has three holes in the cap. The red caps do not appear to have holes? Was I supposed to put holes in the cap?
T S on Apr 24, 2016
BEST ANSWER: The red caps do not have holes in them. The CO2 is allowed to escape from where the cap meets the bubbler airlock. I hope that this helps!

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