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Catalyst Fermentation System By Craft a Brew
The Catalyst Fermentation System


The Catalyst is an elegant piece of brewing equipment through which we’ve simplified the process of fermentation, making it easier than ever to brew great beer at home.

Craft a Brew - Canonical Tank with 45 degree angle

Conical tank with 45˚angle

Craft a Brew - Silicone Gasket for the Perfect Seal

Silicone gasket with multi-surface contact to ensure a perfect seal

Craft a Brew - 6.5 Gallon Capacity

6.5 gallon capacity

Craft a Brew - Proprietary 3" Butterfly Valve

Includes a proprietary 3” butterfly valve. The largest in the industry.

Craft a Brew - All steps in One Vessel - 4 in 1

All steps in one vessel: Primary, Secondary, Harvest Yeast and Bottling

Craft a Brew - Strong & Durable Honeycomb Stand

Strong and durable stand, designed with I-Beam and honeycomb structure.

Craft a Brew - Custom Trap Tub fitting for Mason Jars

Our Trub TrapTM is compatible with any wide mouth jar to eliminate transfers.


Craft a Brew - The Trub Trap Fermentation Device


The Trub TrapTM consists of a 3” butterfly valve and is compatible with any wide mouth mason jar so you can remove kettle trub and fermentation trub, pitch a yeast starter, harvest yeast and bottle without disturbing or oxidizing that precious beer.

Craft a Brew - Kettle Trub Trap (Pre-fermentation)

Kettle Trub (Pre-Fermentation)

Use a 24 oz. mason jar to catch trub, hops and other pre-fermentation sediment, then discard it by closing the valve and unscrewing the mason jar.


Craft a Brew - Yeast Starter & Primary

Yeast Starter & Primary

Use a 16 oz. mason jar as a yeast starter, attach and open the valve to pitch. Leave the jar attached to collect all of the primary fermentation trub.


Craft a Brew - Secondary & Yeast Harvesting

Secondary & Yeast Harvesting

Use an 8 oz. mason jar during secondary to catch all of your viable yeast and refrigerate for later use.



Craft a Brew - Catalyst in kitchen environment

Innovative Materials

The Catalyst’s tank is made from Tritan®, a medical-grade, BPA-free, polymer. This food-safe polymer is the highest quality ever used in a fermenter, providing the clarity of glass with the durability and convenience of plastic. This material acts as an excellent barrier against oxygen, makes our tank 93% more scratch-resistant than other plastic fermenters and is even dishwasher safe, withstanding temperatures of up to 230º Fahrenheit.

Craft a Brew - Benefits 1 - BPA Free

BPA Free

Craft a Brew - Benefits 2 - Scratch Resistant

Scratch Resistant

Craft a Brew - Benefits 3 - Dishwasher Safe

Dishwasher Safe

Craft a Brew - Benefits 4 - Tough and Durable

Tough & Durable

Craft a Brew - Benefits 5 - FDA Approved

FDA Approved

Box Includes

  • 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
Craft a Brew - Catalyst Box Contents

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