Description
These unitanks let a brewery ferment, condition, and carbonate in one vessel, with no transfer to a bright tank. The 800 L and 1500 L sizes land in the working range of brewpubs, small craft breweries, and pilot plants: large enough to fill a run of kegs, small enough for one operator to CIP before the shift ends.
Choose the volume from packaging demand, not from the tank alone. A 1500 L unitank holds roughly 1250–1350 L of beer once you leave headspace for krausen, and 10–15% more goes to yeast and trub. If you package weekly, two 800 L tanks usually beat one 1500 L tank — you can stagger brews and keep yeast viable across generations.
Materials and fabrication
SUS304 is our standard. We move to SUS316L for kettle sours, aggressive chloride cleaning, or coastal sites where pitting is a genuine risk. Interior welds are ground, brushed, and passivated; heat tint is pickled where it remains. Product-contact surfaces are polished to 0.4–0.6 µm, which cuts hop and protein adhesion and makes ATP swab results easier to defend. Exterior finish is 2B mill or mirror polish — mostly a maintenance budget decision, not a quality one.
Cooling, pressure, and connections
Dimple or coil jackets on the cone and lower cylinder are sized to crash 1500 L from 18°C to 2°C in about 24 hours on 2–4°C glycol. Cone angle runs 60° for standard ales, 70–90° where dry hop dumping needs to be reliable.
Design pressure is 0.3 MPa with 0.15–0.2 MPa working pressure, delivered with a certified PRV, gauge, and a separate vacuum relief valve. Carbonate through a stone on the racking arm, not through the relief valve. All ports are tri-clamp: rotating spray ball on the top manway, caustic return, sample valve, racking arm, and separate glycol in/out.
Specifications
| Parameter | 800 L | 1500 L |
|---|---|---|
| Working volume | 650–700 L | 1250–1350 L |
| Interior / exterior | SUS304 or 316L | SUS304 or 316L |
| Inner finish | 0.4–0.6 µm | 0.4–0.6 µm |
| Design pressure | 0.3 MPa | 0.3 MPa |
| Cone angle | 60° / 70° / 90° | 60° / 70° / 90° |
| Insulation | PU 80 mm | PU 80 mm |
| Legs | 3 or 4, adjustable | 3 or 4, adjustable |
Questions we get before quoting
Can I add a dry hop port later? Yes, but the manway layout and jacket mapping change. Adding it at build time costs far less than a field weld.
Is the jacket enough for lagering? For 1500 L at 8–10°C, yes. For repeated crashing in a warm room, ask for a larger jacket area or a second zone.
How is it shipped? Skidded, braced, and crated with ports capped; lifting points are marked on the shell.
Tell us your batch size, beer type, number of fermentation tanks, and available floor space. We can recommend tank volume, cooling area, and configuration for your brewery.
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Best regards,
Oliver Brown
