Brewery Fermentation Tank 

also known as fermenters or FVs (and occasionally spelled fermentors), are the tanks, barrels, or other vessels where wort is held as it ferments into beer.

Fermentation vessels have always been an essential part of even the humblest home-based brewery. They have been almost infinitely varied over time; almost anything that can hold liquid can be a potential fermenter. That said, the technology used for fermentation vessels has progressed considerably during the past 50 years.