Stainless Steel Pressure Kit for FermZilla

Stainless Steel Pressure Kit for FermZilla

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With the FermZilla Pressure Kit you can ferment under pressure, carbonate, and serve without ever needing to move your beer out of the fermenter. The kit inlcudes two stainless female threaded ball lock fittings with barbs, which thread onto the existing openings atop the FermZilla's lid. For the beverage out, you'll have a silicone dip tube with stainless steel float, allowing you to always draw from the clearest beer at the top of the tank. Pick up the Pressure Kit and turn your FermZilla into a true unitank!

The silicone dip tube is 31" long. It will work perfectly as is for the 55L FermZilla. For the 27L model we recommend cutting the dip tube shorter to remove unwanted slack.

With the optional Floating Dip Tube Filter, you can prevent hop material and other solids from ever entering the dip tube. Especially handy when you're pulling samples mid-fermentation!

Fermenting Under Pressure:
The pressure kit allows for fermenting under pressure, which will reduce esters and fusel alcohol production. This means you can ferment at warmer temperatures than you normally would, even making lagers at room temperature. Most commerical beer is fermented under pressure simply due to the size of commercial tanks and the pressure that is created by the column of beer. It is one of the distinct differences between homebrewing and brewing on a commercial scale. The FermZilla's lid already comes with a built-in pressure relief valve that will blow at 35 psi; the pressure kit simply allows you to add CO2 through the ball lock fitting. We strongly recommend that you also purchase an adjustable pressure relief valve, or spunding valve, which allows you to set a lower pressure. It's always a good idea to have two relief valves on the FermZilla anytime the unit is under pressure.
Carbonating, Transferring, and Serving:
When you are fermenting under pressure the beer is already carbonated when you are done fermenting. You can control the level of carbonation by using a spunding valve. This means you can eliminate kegging and serve directly from the fermenter. We love this idea but there will probably still be times that you want to keg. Attach a beer line from the FermZilla's bev out to your keg and enjoy the easiest kegging experience ever.  You can also choose to send carbonated beer through a beer filter on the way to your keg.  When applying pressure with a CO2 tank also make sure that you have a functional relief valve on your CO2 regulator.  
Eliminate Oxidation:
Since the beer always has a CO2 blanket through fermentation and during any transfers out, oxidation is eliminated. When you cold crash you won't be sucking air back in through an airlock.
Key Features:
  • Ferment beer under pressure to reduce ester and fusel alcohol production
  • Always draw clear beer with the floating dip tube
  • Keg beer that has already been carbonated
  • Use CO2 to push beer into a keg or through a filter into a keg
  • Eliminate kegging altogether by carbonating and serving directly from the FermZilla


Please note: pressure kit does not include the lid pictured in the example photo. The ball locks and floating dip tube are installed on the FermZilla's existing lid.

Item # FE135
Shipping Eligible for Free Shipping Program
Availability California - In Stock
Pennsylvania - In Stock
Weight 0.52 LBS
Community Q&A

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Browse 5 questions Browse 5 questions and 64 answers
Why did you choose this?
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Feedback from friend
Jonathan C on Sep 26, 2021
duplicating what i have and need another
Richard G D on Jul 21, 2021
Feedback from friend
Jonathan C on Sep 26, 2021
Goes with fermenter
David M on Sep 4, 2021
duplicating what i have and need another
Richard G D on Jul 21, 2021
I'd like to pressure ferment and close transfer beer
Jesse G on Jul 8, 2021
Pressure fermentation
Landry Milnes on Jul 1, 2021
Russell Bonsall on Jun 29, 2021
goes with top item
Bennet M on May 21, 2021
David Heath Homebrew Review
William H on May 19, 2021
ken H on May 12, 2021
pressure fermentation
Michael E on May 5, 2021
Amit P on May 5, 2021
Back order other item
John K on Apr 28, 2021
Must have item
Mike F on Apr 27, 2021
Pressure / closed transfers
Mike B on Apr 22, 2021
Need to carbonate a large batch of beer, it should make it easier than transferring to kegs before carbonation.
louis e on Apr 20, 2021
I’ll need to do pressure transfers and fermentations
David A on Apr 15, 2021
closed keg transfer
John S on Apr 13, 2021
see above
Jacob Burkhalter C on Apr 6, 2021
Stuck unit
D. Francis on Apr 6, 2021
Pressure fermentation with Fermzilla seems easy to do with this.
Jeremiah W on Mar 29, 2021
I have Fermentasaurus and am trying to improve my coldside technique.
Valued C on Mar 27, 2021
I may need it
Alfred R on Mar 16, 2021
Pressure fermentation and easy fining
Evan A B on Mar 10, 2021
to do pressure transfer into keg
Jose O on Mar 5, 2021
Elmer C on Feb 25, 2021
Clean transfer
Valued C on Feb 19, 2021
I want to be able to pressure transfer
Gabriel David Kehner on Jan 27, 2021
Want to get into pressure fermenting
Jason L on Jan 26, 2021
I already ferment under pressure and need to continue to
Nicholas C on Jan 25, 2021
Just got a fermzilla 27L as a gift and want to low oxygen transfer beer to keg.
Adam D on Jan 12, 2021
For pressurized fermentation
Aaron D on Jan 8, 2021
pressure fermenting
Gary A on Jan 6, 2021
One of the largest reasons that he wanted to buy your fermenter
Damon B on Dec 22, 2020
To ferment under pressure
Jeremy C J on Dec 18, 2020
Because of reviews
Nathan T on Dec 16, 2020
Don't have 1 for my first one yet.
Valued C on Dec 12, 2020
Requested as a gift
Melissa K on Dec 11, 2020
Need it for pressurized fermenting
Samuel Jason N on Dec 11, 2020
Better than a racking cane
Louis LeBlanc on Nov 2, 2020
Best quality
LUIS P on Oct 29, 2020
heckin' ya, draw clear off the top!
Anthony on Oct 28, 2020
Pressure ferment
Sayge A on Oct 27, 2020
Good value
Thomas P on Oct 20, 2020
pressure ferment
Dave C on Oct 6, 2020
Pressure keg transfer
Zack O on Oct 5, 2020
Low o transfers
Valued C on Oct 3, 2020
Very good reviews
THOMAS M on Sep 30, 2020
I want to ferment under pressure
JARED on Sep 23, 2020
Steel is > plastic and I want to ferment under pressure
Tyler P on Sep 18, 2020
For pressurized fermentation and transfers.
MIKE MORGAN on Sep 18, 2020
Goes with fermenter
David M on Sep 4, 2021
I'd like to pressure ferment and close transfer beer
Jesse G on Jul 8, 2021
Are the ball lock fitting gas (gray) or beverage (black) size?
Daniel Collins on May 16, 2020
BEST ANSWER: Both the gas in and serving outlets are gray gas sizes. We also have a gray ball lock for the spunding valve when we use it. We use a beer gun to fill bottles from the serving side, hooking it up to the gray ball lock and it works fine.
Hello - would these fit on a standard 5 gallon corny keg to replace the existing fittings?
Kyle Moberg on Sep 28, 2020
BEST ANSWER: No, they work with any of the fermzilla fermenters, or a soda bottle. however they leak terribly at the seal, for that reason I recommend the plastic ones.
What is the ID of the silicone tube?
BEST ANSWER: Silicone tube
ID: measured 0.23”, assume it’s 0.25” (1/4”)
OD: measured 0.36”, assume it’s 0.375” (3/8”)
Wall: measured 0.063” (1/16”)
Are the ball lock attachments included in this kit the same thread as the KG500/Carb Caps?
Brandon Edwards on Jan 16, 2020
BEST ANSWER: Hi Brandon - The ball lock body connects will be included.

4.3 / 5.0
11 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Rated 5 out of 5
shipping a little expensive for mail
October 10, 2021
2 weeks ago
Rated 5 out of 5
works well wouldnt be without it
April 2, 2021
6 months ago
Rated 1 out of 5
Don't buy the SS pressure kit, get the plastic ones
its very simple, these do not seal. I tried Keg lube, different O-rings, tightening them to different levels. I watched every You Tube video on this system I could find. They don't just leak, they dump pressure faster than I can add it, it would be more effective to just open a CO2 bottle with nothing attached to it. Ultimately I decided to try the plastic carbonator caps and they work perfectly.
April 1, 2021
7 months ago
Rated 5 out of 5
Works great
Was able to leave most of the trub in the Fermzilla and pull sediment-free beer from the surface.
February 13, 2021
8 months ago
Rated 5 out of 5
Great Buy. Love it. Love Homebrewing
February 9, 2021
8 months ago
Rated 5 out of 5
Unitank for the Masses
Ferment under controlled pressure, crash, carbonate, chill, serve from the top and even harvest yeast all using one tank. Well made at an affordable price. I use mine for rapid production of clean-flavored lagers and other lighter beers.
January 14, 2021
9 months ago
Rated 3 out of 5
Beware of leaks
First batch using second fermzilla pressure kit. Most of my plastic ball lock QD do not fit and one post leaked from the top of the post.
User submitted image
Added Oct 6, 2020
October 6, 2020
1 year ago
Rated 5 out of 5
Pound 'em straight from the 'zilla.
OK it works and I do recommend this thing to transform your Fermzilla to it's evolutionary peak as a Unitank. BUT as with all engineering feats, it requires a bit of final checkout.

DO the youtube pressure testing first. Fool that I am, I did not. Tra-la-la it will probably work... No. My Fermzilla ended up leaking wort from the trub-jar caps. Worked fine on unpressured fermentations before, but now we're pressurized baby. And you need high pressure at ferm temps to cool to a fully-carbonated state (PV=nRT). Tightened the caps up by hand and it stopped. Then I had to get the new & improved 2.4mm Fermzilla O-ring to stop the cap leak at the top. They've all shipped with this post-Nov2019 but I got my 'zilla earlier. Worked like a charm with this pressure kit.
The floating dip tube, as you will have read, requires a couple stainless washers added to keep the tube in the drink. No big deal but learned the hard way with a dip tube in a keg.
Get some ball-lock hardware to work around both of these pressure set caps being gas diameter (see my picnic tap on a gas BL).
Homebrewing is a hobby which takes thought, and this pressure set is a worthy hobby goal. Overall, now that I've dialed it in and ironed out the wrinkles, it's awesome!
User submitted image
Added Sep 29, 2020
September 30, 2020
Rated 5 out of 5
Worth buying if using a closed loop system
August 19, 2020
1 year ago
Rated 5 out of 5
Highly Recommended
Adds a lot of function to the FermZilla would recommend.
May 29, 2020
1 year ago