Description
What this unitank solves in a small cellar
A 3.5-5 BBL fermenter is often the first tank that makes a nano brewery feel like a real production floor. This 304 stainless steel unitank lets you ferment, carbonate, and transfer from one vessel. The conical bottom drops yeast and trub away from the racking arm. The double jacket on the body and cone gives glycol coverage for ales, lagers, and crash cooling. If you are stepping up from 1 BBL pilots, check your chiller capacity before you buy the tank.
Fabrication and material choices
We TIG weld the shell, cone, and jacket, then pickle and passivate the interior. Sanitary welds are ground and polished. Exterior finish can be brushed or mirror polished to match your brewhouse. 304 stainless handles most beer, cider, and kombucha. For sour programs, fruit additions, or aggressive acid CIP, 316L is the better call. Gaskets, sample valve, racking arm, and manway seals are selected for repeated caustic and acid cycles, not just for a single commissioning run.
Double jackets use dimpled or channeled panels. Insulation keeps condensation down in humid cellars. A low-pressure unitank typically runs around 1-2 bar, with an adjustable pressure relief valve and vacuum relief. Do not treat it as an unrestricted pressure vessel. The relief setting must match your carbonation method and local code.
Practical applications
These tanks fit brewpubs, taprooms, pilot systems, contract brewers, and small distribution breweries. A 3.5 BBL unit suits seasonal releases and trial recipes. A 5 BBL unit works for core beers when you can cool and package consistently. Sour, cider, and kombucha producers should confirm compatibility of all seals and finishes with their process.
Technical specifications
| Item | Specification |
|---|---|
| Working volume | 3.5 BBL or 5 BBL |
| Material | 304 stainless steel, 316L optional |
| Jacket | Double jacket, body and cone |
| Bottom | 60-degree conical |
| Pressure | Low-pressure rated with PRV and vacuum relief |
| Ports | Top manway, CIP spray ball, racking arm, sample valve, thermowell, dry hop port |
| Cooling | Glycol |
| Finish | Sanitary interior polish; exterior brushed or mirror |
FAQ
Can I carbonate in this unitank? Yes, if the tank is rated for the pressure and the relief valve is set correctly. Confirm your target CO2 volume before ordering.
What chiller size do I need? It depends on batch size, fermentation temperature, and how many tanks you crash at once. Send us your brew schedule.
How is CIP handled? A spray ball plus a CIP pump and proper chemical concentrations clean the tank. Make sure the spray ball pattern reaches the top and cone.
304 or 316L? 304 is standard for most beer. 316L makes sense for sours, salty or fruity processes, and harsh cleaning regimes.
Tell us your batch size, beer type, number of fermentation tanks and available space. We can recommend the tank volume, cooling area and configuration for your brewery.
Structure of a Beer Fermentation Tank
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It was quite a big job to put the distiller together, so I asked a friend to help me, and I managed to get it done in just eight hours. I’m really pleased with it – it looks brilliant.Ryan Murphy
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I want to express my 100% satisfaction with Ace . The service was outstanding: quick, professional, and friendly. Polly provided excellent support throughout. The delivered 100 gallon copper pot still distillery equipment product perfectly meets my expectations and stands out fo r its excellent quality. I feel well taken care of and will recommend you without hesitation.
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Best regards,
Oliver Brown
