The FermZilla Gen 3 is a versatile fermenter that offers several advantages over traditional conical fermenters. One of its key features is the ability to ferment under pressure, with a maximum pressure rating of 2.4 bar (35 psi). This is significantly higher than the typical pressure ratings of other fermenters, which are usually limited to around 1 bar (15 psi) or less.
Fermenting under pressure can have several benefits for the homebrewer. Firstly, it allows for more efficient and rapid fermentation. The increased pressure helps to maintain the dissolved CO2 in solution, preventing it from escaping into the atmosphere. This can result in faster and more vigorous fermentation, leading to shorter fermentation times and potentially higher alcohol yields.
Additionally, fermenting under pressure can help to reduce the production of off-flavors and esters. During fermentation, yeast produces various compounds, including esters, which contribute to the aroma and flavor of the final beer or wine. However, at higher temperatures and under normal atmospheric pressure, these compounds can volatilize and be lost, leading to a less desirable flavor profile. By fermenting under pressure, the volatile compounds are kept in solution, resulting in a cleaner and more balanced final product.
Another advantage of fermenting under pressure is the ability to perform closed transfers. With traditional fermenters, transferring the beer or wine to another vessel for secondary fermentation or packaging can introduce oxygen, which can lead to oxidation and off-flavors. However, with the FermZilla Gen 3, you can use the built-in pressure capabilities to push the liquid out of the fermenter without the need for oxygen-exposing transfers. This can help to preserve the freshness and stability of the beer or wine.
In terms of practical use, the FermZilla Gen 3 features a pressure relief valve to ensure that the pressure does not exceed the maximum rating. This valve can be set to release excess pressure and prevent any potential damage to the fermenter. It is important to note that while the FermZilla Gen 3 can handle pressures up to 2.4 bar, it is always recommended to consult the manufacturer's guidelines and follow proper safety precautions when fermenting under pressure.
The ability to ferment under pressure is a unique feature of the FermZilla Gen 3 that sets it apart from other fermenters on the market. Whether you're a homebrewer or winemaker, the benefits of increased fermentation efficiency, reduced off-flavors, and closed transfers make this fermenter a valuable tool in the pursuit of high-quality beverages.