[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.
TypeCapacity (L)Capacity (US gal)Total Volume (L)Total Volume (US gal)Diameter (mm)Total Height (mm)Shell Height (mm)
ZB500A950013267014780023501000
ZB1000A111000264135029795730571500
ZB1500A1215003961940427111631001500
ZB2000A1420005282620576127533301500
ZB3000A1530007934000880140039632000
ZB4000A174000105753001166160043042000
ZB5000A195000132166501463175044302000
ZB6000A196000158578461726175049302500
ZB8000A2080002114102502255191152252750
ZB10000A22100002642131002882207157003000
ZB12000A23120003170150003300220059503000
ZB16000A23160004227206504542220074504500

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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?

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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.