The previous blog mentioned that the air valve of the coffee bean bag is a device that can only let out but not let in, that is, a one-way air valve. The function of the air valve is not only to discharge the gas of the coffee beans, but also to prevent the outside air from penetrating into the bean bag and affecting the quality of the coffee beans.
The three major factors that affect the quality of coffee beans: oxygen, humidity, and temperature, which will shorten the best tasting period of coffee beans and destroy the quality of coffee beans. Therefore, it is very important to discharge the internal gas without letting air in.
