All-purpose anything seldom lives up to expectations—this is one exception. Boil kettle, chiller, conical fermenter and brite tank . . . in one.
This vessel is identical to the 3-in-1, with the only addition that it has thicker walls, and a domed lid with clamp fasteners to permit up to 14.9psi of pressure inside the vessel. Once fermentation is completed, the yeast can be dumped out the bottom (or captured in the Yeast Harvester), CO2 injected to carbonate the beer, and beer lines connected to your tap. (The Water, Beer, and Wort Chiller can chill your beer and ready it for serving.)
Easy. Tiny footprint. Less time. And perfect sanitation for best tasting beer.
The 4-in-1 can be used by itself for extract based beers, or with the Mash Colander for all-grain brews. (For a complete, simple, cost-effective all-grain brewing system that includes the 4-in-1, refer to the BREWHA BIAC All-in-one Microbrewery Package.)
Multiple 4-in-1s can be added to your brewery to increase your production volume and ensure you have a steady supply of beer.
Product benefits and specifications
BREWinfo: Controlling fermentation temperature in the 3-in-1
BREWinfo: Putting trub in the fermentor
BREWinfo: How to all-grain brew in the BIAC 
BREWinfo: Avoiding deforming the vessel
BREWinfo: Transferring beer from the 3-in-1 to a keg
Video: How to rack beer from the 3-in-1 into kegs