[ZB]
Stainless Steel
Conical Fermenter

2.5 bar
-5°/+30°

The conical fermenter is a vessel designed to produce high-quality craft beer. Often referred to as an “Unitank” by brewers, the conical fermenter can be used for fermentation, maturation and sedimentation. With a special fitting, it can even serve as a brite tank for beer carbonation.

What makes this beer fermentation tank special is its tall conical bottom. Thanks to its funnel shape, it separates and collects sediment. After the primary fermentation you can simply discharge the unwanted sediment, leaving the beer inside the tank.

There are many benefits to using the conical fermenter, for example you don’t have to transfer to another tank between primary and secondary fermentation and risk oxidation. More importantly, you don’t need to have another tank wasting precious space. It also allows you to easily collect and reuse yeastsaving lots of money in the long run.

large, dimpled jacket on the coat and a plate on the conical bottom make sure the temperature inside the conical fermenter is always optimal. Thanks to the vertical construction of the cooling jacket, the stored liquids will be efficiently chilled even if the tank is not full to the brim.

Durable, high-quality materials enable the beer fermentation tank to stay in pristine condition, even after years of professional usage.

AISI 304

The conical fermenter is made out of AISI 304 quality stainless steel. An upgrade to AISI 316L stainless steel is available for high-corrosion environments.
Microscopic structure of AISI 304 stainless steel.

Mirror Polished

A high-polish, mirrored finish is applied to the outside of the conical fermenter. Marbled, Matte and Scotch Brite finishes are also available upon request. The inside is BA (IIId) Mirror polished.
Depiction of a BA mirror polished finish on stainless steel.

Conical Bottom

The beer fermentation tank is equipped with a tall, centered conical bottom (30°/45°/60°). It makes sediment separation easy and removes the need for another vessel.
[Bottom] Conical Centered

Torispherical Top

A rounded, torispherical top is standard for the conical fermenter. It is specially shaped to handle work under high pressures and compliant with the DIN 28011 norm.
[Top] Rounded Torispherical - DIN28011

Conical Bottom

The conical fermenter has a large, funnel-shaped bottom that separates and collects sediment. It removes the need of a second tank and enables two-step fermentation in a single vessel.

Dimple Jacket

A dimple jacket is a thin, spotted shell that regulates tank temperatures with the help of a cooling/heating medium such as glycol. They are made of light-weight materials and spot-welded for minimal additional weight.

Insultion Layer

The tank is wrapped with a thick layer of polyurethane foam which provides great thermal insulation. The PU foam is resistant to moisture and water, making it perfect for stainless steel tanks.

Clean in Place (CIP)

No more scrubbing - cleaning the conical fermenter is automatic thanks to the CIP pipe and spray ball. The BA (IIId) inside finish prevents sediment build-up.

Pressure Vessel

Conical Fermenter Equipment

Standard

  • Operating Pressure – 2.5 bar
  • Operating Temperature – (min)-5°C/(max)30°C
  • Pressure Gauge
  • Insulation – Polyurethane foam layer (60 mm)
  • Manway Door – PED Oval
  • Legs – Adjustable height and tilt
  • Temperature Control
    • Cooling Jacket on Coat
    • Cooling Jacket on Conical Bottom
    • Thermometer (analog)
    • Thermowell (with PG9 fitting)
  • Valves
    • Sample Tap – PED Butterfly valve (DN15 DIN11851)
    • Partial Discharge – PED Butterfly valve (DN40 DIN11851)
    • Total Discharge – PED Butterfly valve (DN40 DIN11851)
    • Safety valve
    • Vacuum valve
  • Type Plate – With note card
  • Ladder rack – Coat height 1500 mm onwards
  • Welding
    • Outside – Brushed finish
    • Inside – Brushed and polished (Ra<0.8 µm)

Options

  • Operating Pressure – 3 bar (Thicker cladding)
  • Electronics Box
  • Manhole Cover – Custom
  • Manway Door – Custom
  • Temperature Control
    • Thermoregulator (digital)
    • Cooling piping system (with solenoid/electromotor valves)
  •  Valves & Fittings
    • Ball or butterfly (Clamp, Garolla, WG, Macon, Gas, etc.)
    • CIP pipe with spray ball and Ball valve (DN25 DIN11851)
    • Stainless Steel Caps (on all valves and fittings)
    • Recirculation (clamp butterfly valve or DIN11851)
    • Dry hopping (clamp or DIN11851)
    • PT100 probe
  • Level Indicator – Ø24 mm acrylic tube (scaled, closed and connected to the CIP pipe)
  • Decanter (Butterfly valve DIN11851 or Tri-clamp)
  • Finish – Marble Polished (outside)
Blueprint of the conical fermenter - front side.

Conical Fermenter Size Chart

Scroll to explore the entire table.
Type Capacity (L) Capacity (US gal) Total Volume (L) Total Volume (US gal) Diameter (mm) Total Height (mm) Shell Height (mm)
ZB500A9 500 132 670 147 800 2350 1000
ZB1000A11 1000 264 1350 297 957 3057 1500
ZB1500A12 1500 396 1940 427 1116 3100 1500
ZB2000A14 2000 528 2620 576 1275 3330 1500
ZB3000A15 3000 793 4000 880 1400 3963 2000
ZB4000A17 4000 1057 5300 1166 1600 4304 2000
ZB5000A19 5000 1321 6650 1463 1750 4430 2000
ZB6000A19 6000 1585 7846 1726 1750 4930 2500
ZB8000A20 8000 2114 10250 2255 1911 5225 2750
ZB10000A22 10000 2642 13100 2882 2071 5700 3000
ZB12000A23 12000 3170 15000 3300 2200 5950 3000
ZB16000A23 16000 4227 20650 4542 2200 7450 4500

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Frequently Asked Questions

What is a conical fermenter

What is a Unitank?

Why use a conical fermenter?

How to clean the Letina conical fermenter?

Ready to simplify your processing?

Let us help you. Describe your needs as best you can with the help of the form below. Our friendly staff will contact you with helpful suggestions and describe the next steps.

1) You order a tank.

You receive our quote and decide whether you want to change it. If you're satisfied, we move onto the design and engineering phase.

2) We design it.

You give us inputs based on the drawings we send you. It is an iterative process and we only stop when you're 100% satisfied.

3) You approve the plans.

You sign the final version of the drawing and email it to us. We then schedule the tank for manufacture. You still have some time for making small changes.

4) We manufacture it.

Your final tank design enters the production line. It is assembled from high-grade stainless steel using advanced welding techniques.

5) You take delivery.

Your tank is shipped out to you, including a manual and proper maintenance guide. We'll always be there for you to provide assistance.