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Grainfather Conical Fermenter

SKU# U42339

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Improve the flavor profile of your brew and give it the fermentation environment it needs to ferment correctly. With the optional digital controller, the Grainfather Conical Fermenter gives you the power to set your fermentation temperature. It’s double walled stainless steel construction provides insulation, and with the integrated heating element and optional Cooling Pump Kit, your wort will remain in the optimal fermentation range for any yeast strain.

Upgrade to the Dual Valve Tap for the ultimate flexibility. This innovative valve makes yeast dumping and harvesting, transferring and sampling processes extremely simple. Sampling and transferring is done through a valve above the sediment line allowing for clearer beer, while the incorporated dump feature allows you to collect yeast from the bottom of the fermenter.


Availability: Out of stock

Grainfather Conical Fermenter with Dual Valve and Digital Controller

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  • Grainfather Conical Fermenter with Dual Valve and Digital Controller
  • Grainfather Conical Fermenter Base
  • Grainfather Conical Fermenter Body
  • Grainfather Conical Fermenter insulted walls
  • Grainfather Conical Fermenter with Dual Valve
  • Grainfather Conical Fermenter with Digital Controller
  • Grainfather Cooling Pump Kit
  • Grainfather Conical Fermenter anatomy


Product Details
The Grainfather Conical Fermenter has been designed to give you the best in fermenting performance! It was designed with the “Golden Angle” of 60°, the optimum angle for dropping yeast to the bottom without clinging to the sides. Make the jump today and control your fermentation temperature, minimize oxygen exposure, and clean up in minutes.

Digital Controller
Control the fermentation temperature by simply replacing the included temperature display with the Digital Controller to accurately dial in the ideal temperature and also includes an option to set up to a 5 stage temperature schedule.

Cooling Pump Kit
The Grainfather Cooling Pump Kit makes it easy to lower your fermentation temperature of the Grainfather Conical Fermenter. Operated with the Digital Controller, it’s designed to regulate and stabilize the fermentation temperature by pumping cold water through the double jacketed walls. And in just one fell swoop, you can target the perfect temperature for better beer! Simply connect the couplers and insulated hoses to the Conical Fermenter and pump, submerge the pump into the cooler of ice water, and the Cooling Pump Kit will circulate cold water through the jacketed walls of the Grainfather Conical Fermenter body as needed to sustain the desired fermentation temperature.

  • 304 stainless steel double walled fermenter.
  • Integrated gentle heating: 30W, 12V heating element.
  • Integrated cooling sleeve that can be hooked up to the Cooling Pump Kit or the Grainfather Glycol Chiller (coming soon).
  • Golden Angle Conical of 60° for yeast to drop down to the bottom
  • Digital Temperature Display (does not control temperature).
  • 8 Gallon Capacity.
  • Wide opening for easy, hassle free cleaning.
  • Stainless steel lid with integrated silicone seal and included rubber stopper and airlock.
  • Cone Plug and Seal
  • 6.5’ power cord
  • Modular system to build up your brewery to your own specifications.
Optional Features - available separately
  • Innovative Dual Valve (available separately)
  • Digital Controller to control temperature and set a schedule/profile
  • Cooling Pump Kit to lower the fermentation temperature into the ideal range
Height - 36" (43" with Airlock)
Diameter - 14.5" (with Handles)
Additional Information
4.8 / 5.0
4 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Stars
Great product...lots of fun!
Great product. Works very efficiently. The heating is quite precise and holds temperature well. Look forward to the pressure transfer kit being available in the US.
January 21, 2018
3 months ago
Works great
The fermentor is very easy to use and is easy to set up. I have only brewed one beer so far using the grainfather SS conical fermentor and it came out great. Using the cooling pump and a cooler with water and 2 frozen Gatorade bottles that I switched out every 12 hours I was easily able to maintain 65°F fermentation temperature. I was also able to raise the beer temp near the end of fermentation to make sure the beer finished out. The dual valve was also useful to allow me to dump the trub and I hooked a tube up to the sampling line and ran the beer out into a keg to limit the oxygen exposure. The fermentor does weigh like 25 lbs or so which makes cleaning it a little more difficult then the plastic carboys that I had been using. Also the price is a little steep but since I live in a small apartment this is a great way to get fermentation temp control in a small area without the use of another refrigerator. It can all fit in my brewing closet when I'm not using it. Overall I like the fermentor and would recommend it.
User submitted image
Added Dec 26, 2017
December 26, 2017
3 months ago
Great product with some fairly easily correctable flaws
I bought mine about a month ago here, and just got a chance to brew for the first time yesterday. I'd give it a 4-1/2 if that were possible.

Pros: excellent temperature control; the ingenious Dual Valve works like a charm. There's a glycol chiller that runs around $1,000, but I don't need that much chilling. I hooked up an aquarium pump; dropped a couple of one-gallon milk jugs filled with water into the sink, and recirculated the cold water through the cooling jacket. It took the wort down from 79 to 64 in about an hour and a half.

Cons: it's almost impossible to work around the bottom of the thing. The legs are thick and close together; there's no space to get your hands in there, let alone something to catch the trub from the valve. It would benefit from a redesign of the base. Fittings are metric, and yes, I understand that that's our fault and not New Zealand's - but a conversion kit would have been appreciated. I found some M16-to-1/2" fittings which work fine.

Very happy with the purchase.
October 16, 2017
6 months ago
Response from Northern Brewer
Thank you for the feedback! We actually suggest sticking with the barb on the bottom of the conical, so the fittings should require unless you are making something special. We will have Customer Service contact you for some additional information.
November 2, 2017
Todd JStaff
Excellent Control
Already a Grainfather owner and fan, the fermentor is compact, easy to use and clean. I recently did my first brew with the temperamentalWyeast 3724 Belgian Saison strain that likes to ferment hot (88-90F). This fermentor kept it right where it needed to be and moved right past the dreaded 1.036 stall (open fermentation). It was simple and easy to drop the trub out and sample the beer for hydrometer readings (through the dual valve). Great piece of equipment just like the Grainfather.
September 19, 2017
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Browse 6 questions Browse 6 questions and 3 answers
can the cooling lines be hooked up to an ice chest of chilled water where the ice chest would contain a pump that could be hooked up to the cooling line?
matthew b on Sep 20, 2017
Can you seal off the Bung hole in the lid and carbonate the beer in the fermenter?
A shopper on Sep 21, 2017
Is Northern Brewer also stocking the Glycol Chiller or planning to do so in the future?
A shopper on Sep 20, 2017
BEST ANSWER: We do have plans to but at this time do not have an ETA.
Attn Northern Brewer. In regards to cooling kit please see youtube video by searching Grainfather Cooling Kit (as I'm not allowed to include links in this post). This cooling kit by Grainfather provides a way to integrate cooling into the fermentor without the need of the gycol chiller. Will you be selling the grainfather Cooling Pump Kit? It seems the critical part of this kit is the power cord that allows you to integrate an external pump into the controller on the fermentor.
matthew b on Sep 24, 2017
Is the entire system metric?
Taylor P on Oct 10, 2017
BEST ANSWER: The volume marks on the side of the fermenter are in both liters and gallons. The temperature controller can be toggled between Celsius and Fahrenheit, but note that it comes set for Celsius out of the box. Very easy to switch.
is there a version of 220VAC 50Hz power for international use for heater and glycol chiller?
A shopper on Sep 23, 2017
BEST ANSWER: Thanks for contacting Northern Brewer. I understand you are looking for a 220vac Grainfather Conical Fermentor. At this time, we are only selling the 120 volt system as that is the rate of current used in the United States. Cheers!

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