10 BBL Brite Tank

7 BBL Stackable Fermenters for Craft Breweries

7 BBL stackable fermenters are a popular fermentation vessel choice for small to mid-size craft breweries producing up to 2,000 barrels per year. With a capacity of 7 barrels or 217 gallons, these cylindrical tanks allow efficient fermentation of typical batch sizes. Stackable configurations also save floor space.

This guide provides a detailed overview of 7 BBL stackable fermenter options, features, customization, installation and operation for craft brewers looking to optimize their fermentation capacity.

Key Benefits of 7 BBL Stackable Fermenters

Some of the main advantages of 7 BBL stackable fermenters include:

  • Space saving – With multiple units stacking vertically, the footprint is reduced. Less floorspace is needed compared to same total capacity in larger single tanks
  • Flexibility – Stacked units allow splitting batches across more fermenters for variety
  • Expandability – Additional stacked tanks can be easily added later to increase capacity
  • Cost saving – Smaller individual vessels can have lower upfront costs for the same volume as one huge tank
  • Customization – Stackable configurations allow tailoring tank counts and layouts to unique space constraints
7 BBL stackable fermenters

Types of 7 BBL stackable fermenters Designs

There are two main types of stackable fermenter designs:

Vertical Stack Tanks: Cylindrical vessels that sit vertically and stack directly on top of each other with integrated stackable frames and access manways. Come in both insulated and uninsulated versions.

Modular Cube Tanks: Cuboid shaped tanks that interlock together horizontally like Lego blocks. Uninsulated only. Pack in together to assemble a compact cube-style stacked block.

Vertical StackStructural strength from integrated frames, smaller footprintHeight constraints, manway access limitations with multiple stacks
Modular CubeInterlocks provide inherent structural stability, no frame neededLarger footprint than vertical, restricted expandability

Key Specifications for 7 BBL Stackable Tanks

Capacity7 BBL = 217 gallons = 822 liters
DimensionsDiameter: 33-36 inches <br> Height: 84-96 inches per tank
MaterialStainless Steel – grade 304 or 316
ConstructionFully welded and polished
Manways12-16 inch diameter opening
Pressure RatingUp to 15 PSI
Insulation1-2 inch spray foam (optional)
CoolingGlycol jackets (optional)
Temperature Range32°F to 80°F
Stacking LoadUp to 10 high (design dependent)
Power208V, 30 to 60 amp single phase
Utility ConnectionsCIP sprayball, sample valve, thermowell, pressure relief valve, sight glass

Customization Options

7 BBL stackable fermenters allow for the following common customizations:

AreaCustomization Options
Capacity5BBL, 7BBL, 10BBL, 15BBL etc
Number of VesselsAs many as can structurally fit space and height
LayoutLinear rows, blocks, L-shape, U-shape, height pyramids etc
MaterialStainless Steel grade – 304, 304L, 316, 316L etc
ConstructionSmooth vs dimpled interior, rounded bottom vs cone bottom
ConnectionsNumber, size, tri-clamp vs threaded etc
InsulationSingle vs double wall, foam type and thickness
Temperature ControlGlycol/steam jacketing, heat exchanger vs cooling pads etc
ElectricalControl panels, automation interfaces, voltage etc
FabricationWelds, surface finish, legs, lifting points, ladders etc

Budget, space constraints, production requirements all impact what customization make sense. Work with tank fabricators to optimize the configuration.

Top Suppliers of 7 BBL Stackable Fermenters

SupplierLocationPrice Range
JV NorthwestCanby, Oregon USA$7,500 to $13,000 per 7BBL tank
Stout TanksPortland, Oregon USA$8,000 to $15,000 per 7BBL tank
ABS CompanyMilwaukee, Wisconsin USA$9,000 to $18,000 per 7BBL tank
Spike BrewingVilla Rica, Georgia USA$10,000 to $20,000 per 7BBL tank
Superior StainlessMorris, Minnesota USA$12,000 to $22,000 per 7BBL tank

Pricing can vary widely depending on level of customization so get quotes before deciding. Many additional domestic and import suppliers are available as well.

Installation, Operation and Maintenance

Proper installation, operation and cleaning procedures are vital for 7 BBL stackable fermenters to maximize production efficiency and longevity.


  • Level concrete flooring required
  • Leave 36+ inches clearance around tanks for access
  • Proper ventilation for heat dissipation
  • Facilitate draining to central trench
  • Certified electrician to wire control panels


  • Follow manufacturer SOPs for filling, fermentation, draining
  • Maintain fermentation temperatures
  • Use glycerin/glycol to prevent freezing
  • Monitor WWTC blowoffs and clogging


  • Interior and exterior CIP after each use
  • Check and replace gaskets every 5-10 batches
  • Inspect fittings, valves, sensors periodically
  • Check calibration of sensors and instruments

Following best practices avoids contamination and equipment damage over long-term operation.

How to Select the Best 7 BBL Stackable Fermenter

Choosing the right 7 BBL stackable fermenter depends on business objectives, production scale, and budget. Use the following criteria during selection process:

ParameterSelection Criteria
BudgetGet quotes from multiple vendors for desired customization
Production ScaleEstimate max batches per week, and peak capacity need
Space ConstraintsHeight, width and clearance limitations
Design NeedsInsulation, glycol cooling, automation, other features
ExpandabilityAbility to add more stacks in same footprint later
Lead TimeChoose shortest acceptable timeframe
LocationDomestic vs overseas shipping costs/time
Reputation & ExperienceResearch vendor quality and service record

Prioritizing criteria weighted as per brewery goals allows choosing optimum 7 BBL stackable fermenters.

Pros and Cons of 7 BBL Stackable Fermenters

Lower upfront capital investmentTricky access for stacked higher tanks
Save significant floorspaceStacking weight limits total number of vessels
Simplified scaling up productionRepeated handling risk of scratches, dents
Avoid duplication of refrigeration/glycolDraining/CIP complexity goes up for stacked rows
Flexible batch splitting across vesselsHeight constraints may exist in brewhouse

The pros generally outweigh the cons for most craft breweries when planned properly.

7 BBL stackable fermenters

Frequently Asked Questions

Q: What is the typical brewhouse size appropriate for 7 BBL fermenters?

A: Generally a 3.5 BBL or 7 BBL brewhouse balanced for the fermenter capacity.

Q: Can multiple types of beers be fermented simultaneously in 7 BBL stacks?

A: Yes, batches can be split across stacks for fermenting ales, lagers etc in parallel.

Q: Do 7 BBL stackable fermenters require any structural enhancements?

A: Potentially, if many units are stacked very high. Engineer assessment of floor loading recommended beyond 6-8 stacks.

Q: What throughput can 7 BBL stacked fermenters handle in a brewery?

A: Up to 2500 barrels annually if fermenting daily full capacity with efficient yeast pitching and turnover.

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