In order to successfully distribute the beer from the tank to the tap, a Duotank Air Compressor (DAC) is needed. The compressor is used to pressurize the tank containing the inliner. By using an air compressor, no CO2 is needed to dispense the beer. Duotank builds the compressors with four different air tank sizes: 10, 25, 40 and 120 liters. When a beer tank installation is designed, the compressor that suits the task best will be selected.