How To Make A Beer Fermentation Tank: Design, Materials & Manufacturing Guide

With the rapid growth of the craft beer industry, the design and manufacturing quality of beer fermentation tanks has become increasingly important. A well-engineered fermentation tank not only ensures stable fermentation conditions, but also directly impacts beer flavor, hygiene standards, and long-term operating efficiency.

At DEGONG, we specialize in the design and manufacturing of stainless-steel fermentation tanks and complete brewery systems. In this guide, we will walk you through the function, design principles, manufacturing process, and material selection of beer fermentation tanks to help brewers make informed decisions.

1. The Role of Fermentation Tanks in Beer Brewing

A beer fermentation tank is the vessel where yeast converts fermentable sugars into alcohol and carbon dioxide under controlled conditions. This stage is critical, as it determines the beer’s alcohol content, aroma profile, mouthfeel, and overall quality.

Key functions of a fermentation tank include:

• Maintaining stable fermentation temperature

• Managing internal pressure and CO₂ release

• Providing a hygienic, sealed environment

• Allowing yeast collection and sediment discharge

• Supporting monitoring and process control

A reliable fermentation tank is the foundation of consistent, high-quality beer production.

2. Key Design Features of a Beer Fermentation Tank

2.1 Tank Structure

Modern breweries typically use cylindroconical fermentation tanks. The cylindrical body ensures uniform fermentation, while the conical bottom allows yeast and trub to settle naturally for easy removal or reuse.

2.2 Capacity Selection

Tank volume should match production scale:

• Small breweries or pilot systems: 100 L – 1,000 L

• Commercial breweries: 1,000 L – 10,000 L or larger

Proper capacity planning improves production efficiency and tank utilization.

2.3 Surface Finish and Hygiene

The inner surface must be smooth and free of dead corners. A polished finish improves cleanability and supports CIP (Clean-In-Place) systems, reducing contamination risks.

2.4 Temperature Control

Integrated cooling jackets are essential for precise fermentation temperature control. Stable temperature management directly affects yeast performance and beer flavor consistency.

3. Beer Fermentation Tank Manufacturing Process

At DEGONG, fermentation tanks are manufactured under strict quality control and food-grade standards. A typical production process includes:

1. Material Preparation
   Selection of certified food-grade stainless-steel plates.

2. Cutting and Forming
   CNC cutting, rolling, and forming of cylindrical shells and conical bottoms.

3. Welding and Assembly
   Precision welding to ensure structural strength and pressure integrity.

4. Surface Treatment
   Internal and external polishing to achieve hygienic and corrosion-resistant surfaces.

5. Accessory Installation
   Assembly of manways, sampling valves, pressure relief valves, thermowells, and CIP spray balls.

6. Pressure Testing and Inspection
   Hydraulic and pneumatic tests to verify safety, sealing, and performance.

Each step is essential to guarantee long service life and reliable brewing performance.

4. Material Selection for Fermentation Tanks

4.1 Stainless Steel (Recommended)

Stainless steel is the industry standard for beer fermentation tanks due to its excellent performance:

• High corrosion resistance

• Easy to clean and sanitize

• Neutral to beer flavor

• Long service life

Common grades include SUS304 and SUS316L, with 316L preferred for higher corrosion resistance and premium brewing applications.

4.2 Food-Grade Plastic (Limited Use)

Plastic fermentation vessels are sometimes used for home brewing or very small-scale applications.

Advantages:

• Low cost

• Lightweight

Limitations:

• Prone to scratches

• Difficult to fully sanitize

• Not suitable for commercial production

4.3 Other Materials

Glass or wooden fermenters are mostly used for experimental or traditional brewing styles and are not practical for modern commercial breweries.

5. Types of Beer Fermentation Tanks

6. Selection and Manufacturing Recommendations

When choosing or designing a fermentation tank, DEGONG recommends:

• Clearly define production capacity and beer styles

• Prioritize temperature control and insulation quality

• Use certified food-grade stainless steel

• Ensure compatibility with CIP systems

• Consider long-term maintenance and service support

A well-designed fermentation tank improves product consistency, reduces operational risks, and supports sustainable brewery growth.

7. Conclusion

Manufacturing a high-quality beer fermentation tank requires a combination of engineering expertise, material science, and brewing knowledge. From structural design and welding quality to surface finish and temperature control, every detail plays a role in fermentation performance.

At DEGONG, we are committed to providing durable, hygienic, and efficient fermentation tanks tailored to the needs of modern breweries. Whether for small craft operations or large-scale commercial production, a properly designed fermentation tank is a long-term investment in beer quality and production reliability.