Airlock - 3 Piece

Airlock - 3 Piece

Quantity Price
1+ $2.99
2+ $2.70
5+ $2.40
In Stock
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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

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Extra in case 1 breaks
Bruce C on Feb 16, 2023
Need it
Raymond Waite on Feb 1, 2023
Extra in case 1 breaks
Bruce C on Feb 16, 2023
Need a second airlock
Preston D on Feb 14, 2023
Need it
Raymond Waite on Feb 1, 2023
Three's a company!
Troy W on Jan 31, 2023
I have used these in the past and they work very well so I’m going to continue using them for a long time
James D on Jan 14, 2023
Beet kvass
Tim R on Jan 11, 2023
Price was great
Fritz L on Jan 6, 2023
Setting up 64oz growlers to use for fermenting
Jay Scharenberg on Dec 29, 2022
Have a s lock and want to compare
Thomas L on Dec 23, 2022
kit son purchased for Dad missing this part
Patricia D on Dec 20, 2022
Cider fermentation
Jacqueline P on Dec 10, 2022
Plug bottles 2nd fermentation
Teresa L on Dec 6, 2022
I use these
DAVID R J on Nov 21, 2022
Suzan P on Nov 19, 2022
A friend
Rick H on Nov 16, 2022
it lets gas back in if the temperature changes
Barbara S on Nov 15, 2022
Useful and can be converted into a blowoff tube pretty easily.
Tom B on Oct 31, 2022
to make alcohol
Timothy M on Oct 14, 2022
To lock air from getting into fermenter.
Seth N on Oct 11, 2022
better airlock style
russell b on Oct 8, 2022
making mead
Jose A on Oct 3, 2022
Brad Saunders on Sep 29, 2022
Fermentor needs airlock
Jim L on Sep 20, 2022
mark h on Sep 13, 2022
Cause I can't find mine
Paul S on Aug 22, 2022
In need of and convenience of ordering on line with my order.
Gabriel B on Aug 9, 2022
I'm short on airlocks.
Jeff Faldowski on Jul 19, 2022
For multiple batches
Robert M on Jul 15, 2022
They are easier to clean that the S style
William Rogers, Jr. on Jul 13, 2022
The S locks break on me when I twist.
Anthony D Silvey on Jul 8, 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 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
Need a second airlock
Preston D on Feb 14, 2023
Three's a company!
Troy W on Jan 31, 2023
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
100 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Rated 4 out of 5
It's an Airlock
It's an airlock. It does the job well. Rattly little bubbler when it's active, which makes monitoring the ferment rather easy.
December 31, 2022
6 months ago
Rated 5 out of 5
They are fine and came as expected, fast service!
December 5, 2022
6 months ago
Rated 5 out of 5
They're Airlocks What's There to Say?
They work. Not much else to say about them.
August 6, 2022
10 months ago
Rated 5 out of 5
Works good. Have several
Great for carboy fermentation
July 23, 2022
11 months ago
Rated 5 out of 5
Easy to clean
These come apart easily and are very easy to clean. They also do a very good job of maintaining an airlock.
July 5, 2022
11 months ago
Rated 5 out of 5
Always keep a few of these around just in case.
January 5, 2022
1 year ago
Rated 5 out of 5
Does the job
It's an airlock, it works, what else can be said?
December 30, 2021
1 year ago
Rated 5 out of 5
Nice Airlock
Great airlock for a great price.
October 11, 2021
1 year ago
Rated 5 out of 5
Works great. Easier to use and maintain than the alternate model.
August 25, 2021
1 year ago
Rated 5 out of 5
It’s an air lock like any other air lock
May 30, 2021
over 2 years ago