Catalyst Fermenter

Catalyst Fermenter

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Due to high demand, this item is currently out of stock. Be the first to receive your items by placing a pre-order today. We will automatically ship this to you when we receive more inventory.
The Catalyst represents the future of fermentation simplicity.  Easy to clean, transferless, this is a time-saving piece of equipment which you'll be surprised by the value of.  Boasting a rich set of features, the Catalyst Fermentation System was designed for homebrewers, while keeping true to many pro brewing principles.  Not only will the Catalyst Fermentation System save you time and energy, it will improve the quality of your beer!

The 45° Conical Fermentation Tank is made of a BPA free Medical Grade material, Tritan, which can withstand dishwasher cleaning and is incredibly resistant to scratches or other damage.  The entire vessel is designed to withstand boiling temperatures, so wort can be transferred straight from your kettle to fermenter without cooling if necessary. 

Thanks to the integrated dump valve, trub can be dumped, allowing for primary and secondary fermentations to take place in the same vessel.  This reduces transfers and touches, not only reducing oxygenation of your beer, but also reducing the chance of contamination.  Once fermentation is complete, you can bottle from the same system using the included tubing adapter for the dump valve.

Conical design forces yeast & trub down to the integrated harvester, reducing contact with your beer and improving flavor.  Yeast harvesting is accomplished using the integrated oversized 3" Butterfly Dump Valve & commonly available mason jars. 

When fermentation is complete, cleaning is even easier.  The Tritan material used for the conical resists buildup, and since the entire lid lifts off, cleaning the conical is as simple as a quick rinse & wipe down. 

We've found the Catalyst to be a solid piece of equipment that does the job of many pieces of brewery equipment.  If you're looking for a fermenter that covers you from brew day to bottling, this is the unit for you!


  • 6.5 Gal capacity
  • 45° Conical angle
  • Oversized 3" buttefly dump valve
  • Silicone Gasketed lid for perfect fermenter seal
  • Uses common mason jars as yeast harvester
  • All steps on the cold side of brewing in one vessel: Primary, Seconday, Yeast Harvesting, Bottling.
  • Medical Grade BPA Free conical made of Tritan.


  • 6.5 Gallon Tank with Lid
  • Stand (Base, 2 Legs, 2 Support Beams, 8 Screws)
  • 3” Proprietary Butterfly Valve
  • Bottling Attachment
  • Transfer Tubing
  • Tubing Clamp
  • Rubber Stopper
  • 16 Oz. Wide Mouth Mason Jar
  • Allen Wrench

Perfect your Catalyst System with the Catalyst Tank Cover.


Prebook Item: Please note this item is not currently in stock, but is available for Pre-Order. We do require payment in full in order to reserve stock.
Item # FE950
Weight 13 LBS
Community Q&A

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Browse 6 questions Browse 6 questions and 13 answers
Why did you choose this?
MoreFlavor Store
liked the write up
Ace on Mar 12, 2022
research online for my husband who is a homebrewer
Terry P on Dec 14, 2021
liked the write up
Ace on Mar 12, 2022
Because it’s is amazing! It’s easy to clean .
bob j on Jan 30, 2022
research online for my husband who is a homebrewer
Terry P on Dec 14, 2021
The conical design and collection port make it much better that the bucket system
Matthew M on Jul 27, 2021
for me is the best
David R on Jan 21, 2021
ease of use and cleaning and ability to use any mason jar for trap
Steven Y on Dec 29, 2020
Gift, includes gravity bottling system
philip c on Dec 2, 2020
Recommended by friend who has one
Ken Q on Aug 7, 2020
Been wanting for a long time
Aaron S on Jul 1, 2020
Concept is great.
Ray De S on Jun 18, 2019
Combines many brewing functions into one easy to use item.
John on May 13, 2019
Looking for a better way to ferment my beer.
Jim on Dec 28, 2018
Price and features
Brent H on Nov 27, 2018
Eric Palmer told me to. He is the beer Yoda.
david h on Nov 25, 2018
great reviews and looks like a great fermenter
bob costanza on Jun 11, 2018
Looks really good and good reviews
David A on May 1, 2018
like the design and the see through vessel
Juerg L on Mar 10, 2018
Because it’s is amazing! It’s easy to clean .
bob j on Jan 30, 2022
The conical design and collection port make it much better that the bucket system
Matthew M on Jul 27, 2021
What are the dimensions of the box it ships in?
Nicolas Arias on Jul 15, 2020
BEST ANSWER: Here are the current shipping dimensions for this Catalyst Fermentation System.
Weight:16 lbs
Height: 18 inches
Width: 16 inches
Length/Depth: 16 inches
What is the dimensions of the base? I would like to see if it'll fit in my fermentation chamber.
charles mears on Nov 26, 2018
BEST ANSWER: Hi Charles - The stand width is 17".
Is it possible to move the fermenter and stand when full? Is the stand to flimsy to move while fermenter is full?
Robb Denney on Mar 25, 2021
BEST ANSWER: As long as you are strong enough to pick up the fermenter you can. The stand is pretty durable in my opinion.
what is the outside diameter of the lid including lock tabs (Closed position)?
Larry Dean on Dec 12, 2020
BEST ANSWER: The lid itself is 14". The lid with the locking tabs in the locked position is 14 11/16".
I was told plans were in the works to add a stainless coil (similar to item FE863) for pumping glycol in order to use this item independent of a temp controlled fridge. Is this still in the works?
Jacob Burnham on Dec 4, 2018
Catalyst Fermentation System
Catalyst Fermentation System
Ss Brewtech Chiller Coil & Neoprene Jacket | One bbl Brite Tank
Ss Brewtech Chiller Coil & Neoprene Jacket | One bbl Brite Tank
BEST ANSWER: Hi Jacob - We have not heard anything about that, apologies.
What is the height, with the airlock?
A.G. Stockstill on May 7, 2018
BEST ANSWER: Height of the unit is 26.25". Assume an airlock will add 3-4" to this.

4.4 / 5.0
18 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Rated 5 out of 5
Great fermenter
I love this thing . Easy to clean . Easy to use . All around great fermenter.
February 12, 2022
over 2 years ago
Rated 4 out of 5
First batch fermenting, so far so good but some issues
My first conical. Seemed to be the best one out there that I could find. Some things that could be improved:
- need an extra half gallon of space at the top so that it doesn't overflow when fermenting. tubbing to a bottle filled with liquid is not a good solution.
- purchased the tank cover it makes it a bit hard to keep the conical level
- the cone that attaches to the bottom of the valve (for bottle filling) and the supplied tubing is a smaller diameter than bottle filler wands. a real setback. The little click stopper they supply (instead of using a bottle filler) is not a good fix. gonna have to do some jerry rigging to make it work, not what I wanted.
All in all i like it and only using for the first time but would purchase again.
December 29, 2021
over 2 years ago
Rated 5 out of 5
You will love this!
I think this is a really great fermenter! Wish I’d found it long ago
User submitted image
User submitted image
User submitted image
Day 3
August 19, 2020
over 3 years ago
Rated 5 out of 5
Great fermenter
Everything you could ever want out of a fermenter like this
Catalyst fermenter
Catalyst fermenter
July 22, 2020
over 4 years ago
Rated 2 out of 5
Butterfly valve is leaking
Bought this about 3 month ago. Fermented one beer and it did great. This weekend I dumped 3 gallons of hot water and Star San sanitizer to prep for brew day. The butterfly valve started leaking. Upon inspection the valve is separating at the seam. I’ve contacted Craft a Brew and More Beer and still waiting to hear back from either of them.
Butterfly valve separating
Butterfly valve separating
Butterfly valve separating
December 9, 2019
Response from MoreFlavor
Hey so sorry about your experience. Thank you so much for your feedback. We really appreciate the honesty and value great feedback like this as it helps us improve our products. We try very hard to create the best experience for our customers and provide quality products. Please give us a call at 1-800-600-0033 or email us at info@moreflavor.com so that we can assist you. We are here to help. Cheers!
May 29, 2020
Malcolm lieban
Rated 4 out of 5
Easy to use system
It was really easy to put together and clean. I had a batch of cider going soon after arrival. The only complaint is that when I did the leak test, I found that the butterfly valve didn't completely close. Since I wanted to get brewing right away, I was able to "reverse" the handle so that the valve closes completely. Other than that minor inconvenience, I've been really happy with the system!
November 5, 2019
over 4 years ago
Rated 5 out of 5
Catalyst Fermenter System a hit!
Have been using it since the day it arrived around a year ago. Have rep itched yeast for the first time in 15 years of home brewing thanks to this system. No complaints on my end. Easy to set up, easier to clean, love it!
November 26, 2018
over 6 years ago
Rated 5 out of 5
Great product!
Makes the whole process easier! Definitely recommend this product!
November 12, 2018
over 5 years ago
Rated 5 out of 5
Catalyst fermentation system
Started my first brew in the fermenter today, first impressions are that this is a good vessel to ferment your beer in. The butterfly valve seems to be a very good design, opens and closes positively. i love the mason jar feature for dumping trub and saving yeast. The triton plastic used on the container seems to be pretty bomb proof, much better than the plastics used on other fermenters. It also appears to be very easy to clean. My only concern would be the latches that hold the lid in place, they are a plastic hinge and only time will tell if they hold up, other than that I give it a big thumbs up
June 14, 2018
over 6 years ago
Rated 5 out of 5
This is one of the best things I could have done to streamline my fermenting & bottling.
Try it, you will like it!
May 22, 2018
over 6 years ago