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Catalyst Fermentation System

Catalyst Fermentation System

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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.


Item # FE950
Shipping Eligible for Free Shipping Program
Availability California - In Stock
Pennsylvania - In Stock
Weight 10LBS
Community Q&A

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Browse 2 questions Browse 2 questions and 4 answers
Why did you choose this?
MoreFlavor Store
great reviews and looks like a great fermenter
bob costanza on Jun 11, 2018
like the design and the see through vessel
Juerg L on Mar 10, 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
Looks really good and good reviews
David A on May 1, 2018
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.

4.2 / 5.0
12 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Great product!
Makes the whole process easier! Definitely recommend this product!
November 12, 2018
2 weeks ago
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
5 months ago
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
10 months ago
No regrests. Exceeded expectations
Sturdy construction but light weight. Air tight seal with a removable (and washable) rubber gasket.
Love being able to remove the trub and yeast! I let the wort settle for 45 minutes after transfer before pitching, and then remove a full mason jar of trub. My beer has improved in appearance and taste. I've also been capturing a large quantity of healthy yeast saving me money for the next batch.
1 minor quibble - wish it used a #10 bung which I could then drill for a thermowell, or if they included a thermowell, and sample port.
April 5, 2018
10 months ago
Things to watch
Not good for bottling from without re-racking especially if you dry hop.

Concerned about the lid fasteners, as they are attached only by the plastic. Don't know how long they will last with the bending to lock and unlock the lid.

Lid gasket is a pain to get back on if it comes off. Next time I may use a few drops of glue to put back on.
February 27, 2018
9 months ago
Buy the bigger one
Small leak when first loaded up with sanitizer but tightened up nicely. Larger size was not available when I ordered this one and that’s the one I would recommend over this one.
February 16, 2018
10 months ago
Great fermentor, only missing handles
Having the trub trap on an affordable conical fermenter is fantastic. Easy to disassemble and clean. Having the clear plastic to monitor fermentation is neat, too.

Transportation between where I brew to where it is fermenting is a slight issue and I assume would be for most people. Because of the positioning of the majority of liquid above the frame this makes the center of gravity higher than the frame, which is the natural carrying location. Awkward for anyone to move.
December 7, 2017
Great concemp although my recipes are for a larger volume.
I purchased this after using brewing buckets and find the volume too small for my recipes; I start with 7 gallons of water; I will need to adjust them down 1 gallon and should work fine. The seal is very good even when the bubbler gets plugged with foam. My current batch of Porter is setting at the 5 gallon mark and I need to clean the bubbler at least twice a day due to foaming and have dumped two pint jars using the trap with this recipe.

I will continue to use for smaller test batches; 6 gallons of water at flame on and quart jar on the trap.

If this product was increased to 8 gallons and had a domed lid I would definitely purchase the new model because I like all the features just not the current size.
September 15, 2017
Love it!
How do I like it? It was love at first batch. If it was a woman I would marry it.......'nuf said.
September 9, 2017
Great Product and easy to use
This is an excellent product that makes removing trub and reusing yeast a breeze. This is a well made product and I own two of these and have used each of them for about 5 brews a piece and have very few complaints. The gasket on the lid can be tricky to get on, it is easy once you slowly work it. This gasket has a tendency to fall of if you pull the lid of to quick, because of the great seal it creates a sucking that can pull the gasket off the lid. I have made 2 modifications to mine so it would have a sample port and thermowell.
September 6, 2017