FermZilla Thermowell w/ Duotight Bulkhead - 23.6 in.

FermZilla Thermowell w/ Duotight Bulkhead - 23.6 in.

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This stainless steel thermowell is your best option of monitoring temperatures in the 27L or 55L FermZilla. Since the thermowell installs into the lid, the thermowell will be well positioned in the middle of the fermenter to provide an accurate core temperature reading. On the bottom side of the FermZilla's lid you'll find several convenient drill locations already molded into the plastic. The thermowell is long enough to work with either size FermZilla (or other fermenters!), so if you need to cut the tube down a bit, we recommend using one of these Pipe Cutters. The FermZilla will still be pressurizable after installing the thermowell, just be careful to drill the hole no wider than needed to fit the Duotight bulkheads.

  • 23.6" long (60 cm)
  • 5/16" OD (8 mm)
  • 1/4" ID (7 mm)
  • Made from 304 stainless steel

Kegland Part number: KL14649

Item # FE140
Shipping Eligible for Free Shipping Program
Availability California - In Stock
Pennsylvania - In Stock
Weight 0.20 LBS
Community Q&A

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Browse 5 questions Browse 5 questions and 44 answers
Why did you choose this?
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Temp control on my brew
Jeb S on Jun 19, 2021
Adjustable depth and I can use with several fermentors
Kevin A on Apr 6, 2021
Temp control on my brew
Jeb S on Jun 19, 2021
Because it should work with the temp twister
RICHARD W on Jun 2, 2021
Adjustable depth and I can use with several fermentors
Kevin A on Apr 6, 2021
It's for temp controlling my lager
Jeb S on Mar 23, 2021
the size, i couldn't find one longer than 15''
jason p on Mar 11, 2021
Better temp readings
Henry T on Mar 10, 2021
Fermentation temp control
James K on Mar 3, 2021
will put in speidel lid
Domingo T on Feb 19, 2021
chad p on Feb 17, 2021
tool I need
Donald Richard G on Feb 3, 2021
To use with FermZilla conical fermenter
Joseph W on Jan 23, 2021
More precise temp control
Corby Hawkins on Jan 20, 2021
Just got a fermzilla 27L as a gift and have existing temp control I want to replicate on it.
Adam D on Jan 12, 2021
Need for my fermenter
larry w on Jan 4, 2021
To use with a temp controller and heat source to regulate fermentation temps.
Jeff H on Dec 30, 2020
Goes with my conical 55L fermentor
Brandon M on Dec 28, 2020
I need to monitor temperature and have a Fermzilla
Mike B on Dec 17, 2020
I have a fermzilla fermenter
Robert J S on Dec 13, 2020
I need it
Thomas P on Oct 20, 2020
a good way to keep temp
Shawn on Sep 9, 2020
Fermentation temperature control
Mike E on Aug 13, 2020
hoping to adapt as vertical thermowell for my biab kettle
Stephen Battersby on May 13, 2020
Better accuracy than sticking the probe to the side of the fermentor
Darin E on May 9, 2020
To modify a Speidel 30L fermenter
Mattox B on Apr 30, 2020
upgrading a fermenter COVID19 project
Henry H on Apr 8, 2020
Price seem good, I'm hoping it will work (easily) with my fermzilla flat bottom fermenter.
John B on Apr 7, 2020
Need this for my 2nd Fermzilla
John L A on Mar 10, 2020
Already added to several glass carboys (5G-6G) need a spare and one for remote monitoring my fast ferment via second well
Kevin M on Mar 6, 2020
Part of the system
Cameron M on Mar 5, 2020
for temp monitoring
larry t on Mar 2, 2020
Duotight Bulkhead. All the others I looked at use a rubber stopper or something else.
Aaron LaBounty on Feb 11, 2020
Because I use a digital thermometer.
Andrew Obeso on Jan 22, 2020
Because it should work with the temp twister
RICHARD W on Jun 2, 2021
It's for temp controlling my lager
Jeb S on Mar 23, 2021
If I install the Thermowell does it still holds the pressure ?
Carlos Chávez on Feb 17, 2020
BEST ANSWER: Kind of. The fitting for the thermowell does have an o-ring on the bottom, but on mine it didn't seal well. I plan on adding some silicone to seal it completely. Your mileage may vary.
Is there any way to buy only the 8mm duotight bulkhead? I need to be able to switch out thermowell between two lids.
Cayde Ellender on Nov 18, 2020
BEST ANSWER: Yes you can buy duotight fittings. Personally I bought multiple thermowells rather than move the thermowell back and forth. I didn't think the fittings would seal as well after a few swaps and can have multiple fermeneters going at the same time.
Does this Thermowell interfere with the TempTwister? I assume they won't conflict, but I don't see any photos or documentation with both installed.
Alex McMillen on Jun 4, 2020
BEST ANSWER: No, it fits inside the coil of the Temp Twister. I have brewed several times with mine and it has performed well.
Has anyone been using this on beer? Any ill effects on flavor?
Brennan Doerr on Oct 2, 2020
BEST ANSWER: Been using this in a fermizilla and about 12 batches, haven't had any issues or any effect on flavor.

4.6 / 5.0
9 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Rated 4 out of 5
Please don't strip, Please don't strip, Plea.... Ohhhh
First things first - Much love to Kegland, their products are fantastic.

My only complaint is the DuoTight through bulkhead connection. Can't count how many times I've fished a SS nut out of my beer...

The SS nut is too short - meaning it goes up into the pressure cap too far to get a good hold of and it strips the plastic male threads of the DuoTight.

I would much rather a plastic wingnut-type connection that I could hold onto and just snug up the tightness and a longer male threaded section to verify the threads are synced before tightening.

Instead, I have to make a choice - use a wrench under the cap (that really doesn't fit in the hole where the nut sits under the pressure cap either) and tighten praying not to strip the plastic DuoTight threads


Try to hold the nut with my fingers and tighten the DuoTight fitting from above and pray the threads are lined up just right so the SS nut doesn't eat the plastic threads and you guessed it - Strip the fitting.
March 20, 2021
Rated 5 out of 5
Highly recommended quick shipping reasonable pricing clear communications would not hesitate by again
Highly recommended quick shipping reasonable pricing clear communications would not hesitate by again
March 2, 2021
5 months ago
Rated 4 out of 5
Works as intended.
It took me a bit to get the lock nut tight and leak free, however once I did it works like a charm.
February 25, 2021
6 months ago
Rated 5 out of 5
Big step up
I wanted to be able to monitor wort temp more accurately and this is the very thing. Easy to fit.
February 10, 2021
6 months ago
Rated 5 out of 5
cheap and versitile
I use this with just a normal 5 gal bucket to monitor temperature. Its cheaper than the stopper/thermowell combo and seems to work just fine. Just drill/cut out a hole in the lid and you're good to go! I might try drilling a second hole in a stopper if I start getting contamination, but I've done a few batches this way with no problems.
Fermentation bucket
Fermentation bucket
October 8, 2020
10 months ago
Rated 4 out of 5
Does what its supposed to.
May 28, 2020
1 year ago
Rated 5 out of 5
Thermowell would not pass through bulkhead without reaming out threaded portion of bulkhead. Once that was done worked perfectly.
April 20, 2020
1 year ago
Rated 5 out of 5
Fermzilla Thermowell
I get a true temperature reading for control of my fermentation refrigerator. Thank you
March 23, 2020
1 year ago
Rated 4 out of 5
Thermowell is Great, Duotight Fitting okay
Very happy with the thermowell itself. Much longer than most others you can find, tip is domed as opposed to crimped, and the perfect size for my Inkbird temp probe. Also much cheaper than shorter crimped versions I saw on Amazon. On my 27L Fermzilla it reaches all the way down into the the collection container, I cut it to sit in the middle of the fermenter.

The duotight fitting is okay, does the job but there are a few issues.

1. It doesn't seem to properly lock against the stainless steel. When you push it in and then pull the little ring that should come down doesn't, and you can still pull it back out without having to compress the ring. I think it's because this fitting was designed to work with soft tubing, not stainless steel. It still holds the thermwell, and takes a good pull to get it back out, but could be better.

2. The fitting itself is plasic, but it comes with a metal nut to secure it to the lid, which stripped the plastic fitting immediatly. I noticed this before I started installing it, so I was being very careful to tighten it with very little force and a very short wrench, but it stripped the plastic threads immediatly, nothing a little glue can't fix, but I would advise to only hand tighten.
February 24, 2020
1 year ago