Airlock - 3 Piece

Airlock - 3 Piece

Quantity Price
1+ $2.99
2+ $2.70
5+ $2.40
In Stock
Delivers to ( change ) by as part of our Fast & Free Shipping.
Faster Shipping Available. Details.
60 day no hassle return policy. Details

Airlocks are another one of those necessary pieces of equipment for every homebrewer.  If you ferment in a carboy or bucket this 3 piece airlock is a must! It’s a popular alternative to the triple ripple type of airlock because it can be taken apart and cleaned, and is easy to fill. (However we do sell the triple ripple type (FE371) in case you are used to that type and would like to stay with it.) 
While a simple device not all airlocks are the same. Some other designs have only a couple holes in the plastic lid and this can cause the airlock to pop out during an active fermentation.  Our design features multiple holes that allow CO2 to escape easily.  Additionally some other airlocks have a cross hatch design on the bottom. We have found this more easily leads to Krausen clogs and the airlock being pushed out of the fermenter. Ours is open, allowing Krausen foam to enter the airlock if necesary.  Better to clean your airlock out than to find it laying on the floor next to your fermenter 3 days later.  
Another cool feature of this 3-piece airlock is that 1/2" ID Silicone tubing will fit onto the center post for use as a blowoff. In the cases where you are using a yeast known to produce lots of Krausen (wlp002 from White Labs or 1968 from Wyeast for example) remove the top cover, remove the plastic 'hat', and install the silicone tubing.  Run the silicone tubing into a jar or bucket of water. When fermentation dies back down remove the tubing and replace the hat and cover.
Please Note: Airlock only - stopper not included.
Item # FE370
Shipping Eligible for Free Shipping Program
Availability California - In Stock
Pennsylvania - In Stock
Weight 0.06 LBS
Community Q&A

Start typing your question and we'll check if it was already asked and answered. Learn More
Browse 2 questions Browse 2 questions and 52 answers
Why did you choose this?
MoreFlavor Store
Use with carboy
Gregory P on Jun 23, 2022
easy to clean
Woosey on Jun 17, 2022
Use with carboy
Gregory P on Jun 23, 2022
Paul M on Jun 18, 2022
easy to clean
Woosey on Jun 17, 2022
Can be cleaned
Sarah F on Jun 14, 2022
It is easier to clean.
William Rogers, Jr. on Jun 11, 2022
Simple and functional
Ellis M on May 26, 2022
additional equipment need
Michael H on May 25, 2022
used one before
Robert W on May 21, 2022
works very good
Gabriela T on May 18, 2022
Michael D U on May 10, 2022
Alternate to a type air lock
Valued C on Apr 28, 2022
Stephen R on Apr 15, 2022
Scott J on Apr 13, 2022
Same as current use
Joseph R on Apr 6, 2022
Good price
TACEY O M on Apr 6, 2022
Erik A on Mar 30, 2022
In case I want two fermenters going at once
Jack C on Mar 30, 2022
unlock air
roger b on Mar 23, 2022
more comfortable with 3 piece than the S style
lawrence a b on Mar 10, 2022
Wine making
Valued C on Mar 5, 2022
Can’t ever have too many of these as backups.
Ryan R on Feb 26, 2022
Trying something new
Mark W on Feb 22, 2022
Easier to clean
Cody P on Feb 11, 2022
Desiree J on Feb 8, 2022
Low profile
Jeffry B on Jan 22, 2022
Bobby F on Jan 22, 2022
Rob G on Jan 22, 2022
Jason U on Jan 22, 2022
not very durable, but convenient
Michael Q on Jan 1, 2022
lower profile
Jeffry B on Dec 30, 2021
Have used similar models
Kevin M on Dec 22, 2021
Always need them and live 3 hours round trip from the closest store
Joshua W on Dec 8, 2021
Project bird feeder
Francis W on Dec 4, 2021
Easy to clean
Robert A on Dec 4, 2021
Prefer 3 piece airlocks
Thomas S on Nov 20, 2021
Trevor Mack on Nov 17, 2021
Troy L on Nov 5, 2021
Tax exempt
Jeffrey S on Nov 4, 2021
used to be a buck
John S on Nov 2, 2021
That’s what it called for.
Sharon B on Oct 30, 2021
they work good
SERGIO S G on Oct 29, 2021
S-shape wasn't available
David S on Oct 21, 2021
I need them
Nancy b on Oct 21, 2021
I have one already & like the way it works
Patricia M on Oct 19, 2021
I want to make more than 1 batch at a time
James A D on Oct 18, 2021
Need it
Gary P on Oct 15, 2021
to ferment wine and beer.
Deb L T on Sep 30, 2021
keep your bottles clean and burping
Jordan H on Sep 24, 2021
i like these
Trevor V on Sep 17, 2021
need another one .
LES B. on Sep 9, 2021
Paul M on Jun 18, 2022
Can be cleaned
Sarah F on Jun 14, 2022
What is the trick for adding a blowoff tube? I use a 1/2 in. tube and it breaks the airlock first use, even if i put silicone on it.
Adam Peppas on Oct 18, 2018
BEST ANSWER: Hello Adam - 3 piece airlocks are best to be used when fermentation has calmed, or there is plenty of headspace for krausen. An easy blow-off solution is putting ~5/16" OD hose through a stopper, then into a bucket of sanitizer.

4.7 / 5.0
95 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Rated 5 out of 5
Always keep a few of these around just in case.
January 5, 2022
6 months ago
Rated 5 out of 5
Does the job
It's an airlock, it works, what else can be said?
December 30, 2021
7 months ago
Rated 5 out of 5
Nice Airlock
Great airlock for a great price.
October 11, 2021
9 months ago
Rated 5 out of 5
Works great. Easier to use and maintain than the alternate model.
August 25, 2021
10 months ago
Rated 5 out of 5
It’s an air lock like any other air lock
May 30, 2021
1 year ago
Rated 2 out of 5
Do not like these- much prefer the S-shaped ones
I'm still new to fermenting so I wanted to try these after starting with the S-shaped kind. Unless your fermentation is hyper-active, these are near impossible to tell if there's pressure. I prefer the s-shapes because you can easily tell if there is any pressure on the water level. I will be chucking these.
April 13, 2021
1 year ago
Rated 5 out of 5
Haven't used yet, but I'm confident I'll work as intended.
March 15, 2021
1 year ago
Rated 5 out of 5
Pros and Cons over the one piece
Versus the one piece "S" shaped airlock:

Pros: This 3 piece lets in less oxygen, according to a study that Better Bottle put out (google it). Makes sense, since the plastic is thicker and less is exposed to the air. Cleaning is also easier since you can disassemble it. Lastly, this one seems to keep clear longer that the one piece.

Cons: If the temperature drops, you'll get sanitizer or water in your beer. The one piece "S" airlock doesn't do that.

Overall I like this one better.
February 10, 2021
1 year ago
Rated 5 out of 5
Good buy
Nice fit, easy to seal
December 28, 2020
1 year ago
Rated 5 out of 5
Excellent airlock. Easy to clean, works great!
December 22, 2020
1 year ago