Description
300L and 500L conical fermenters for micro breweries
These tanks are built for brewers who need a reliable fermentation vessel between pilot batches and full production. A 300L unit suits brewpub trials, seasonal releases, and yeast propagation; the 500L version covers a small commercial brewhouse running two to four brews per week. Both share the same geometry: 60° conical bottom, dished top, side-mounted racking port, and a bottom dump port sized for dry hopping and yeast harvest without clogging.
Materials, welds, and surface finish
We use SUS304 as standard. SUS316L is available where chloride exposure or aggressive CIP chemistry is a concern. Interior welds are ground flush and polished to Ra ≤0.6 μm; exterior welds are pickled and passivated. The shell is 3 mm, the cone 3 mm, and the cooling jacket 1.5 mm, all TIG welded with full penetration on product-contact joints. Every tank is pressure-tested at 1.5× design pressure before shipment.
Work pressure is 15 psi (1 bar) on the fermenter and 30 psi on the jacket. A spring-loaded safety valve, a pressure gauge, and a separate CIP spray ball port are standard. Do not rely on a single valve for pressure relief — we fit an independent PRV on the top dish.
Cooling and temperature control
Two dimple-plate jackets cover the cone and the lower shell. For ales, that is enough. For lagers held at 34°F, a third jacket on the upper shell gives better control when the tank is 80% full. Glycol inlet is 1.5 in tri-clamp, and we can position the ports on the front or rear face depending on your pipe routing.
Specifications
| Model | 300L | 500L |
|---|---|---|
| Gross volume | 360 L | 600 L |
| Working volume | 300 L | 500 L |
| Inner diameter | 700 mm | 800 mm |
| Total height | 1,850 mm | 2,150 mm |
| Cooling area | 1.8 m² | 2.6 m² |
| Legs | SUS304, adjustable, with levelling pads | |
Common questions
Can I dry hop through the top manway? Yes, but on the 500L we recommend a dedicated 4 in dry-hop port on the upper dish. It reduces oxygen pickup.
Is CIP automatic? The spray ball handles the tank interior; you still need a pump and a caustic/sanitizer loop. We size the spray ball for 3–4 bar supply.
How do I connect the glycol loop? Each jacket has its own inlet and outlet. Run them in parallel to a manifold with balancing valves.
Do you build to ASME or CE? Both, depending on destination. Tell us the market at inquiry stage.
What to send us
Batch size, beer style, number of tanks, ceiling height, and glycol supply temperature are the five details that decide the configuration. Share those and we will confirm tank volume, jacket layout, and port positions before quoting.
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