Bottle Filler Beer Gun - Duotight

How a Counter Pressure Bottle Filler Works?

• The premise behind a counter pressure bottle filler is to fill the bottle while it is under constant pressure to prevent foaming and loss of carbonation.

The actual process takes place in stages

• In the first stage, the bottle is filled with CO2 to purge all of the air from the bottle.
• Second, the bottle is pressurized so that the CO2 in the bottle is at the same pressure as the carbonated beer to be added.
• Third, the bottle is filled, and CO2 is allowed to escape from the bottle as beer displaces it while maintaining constant pressure.
• Finally the filler is removed and the bottle is quickly capped.
• If the steps are done properly, the beer will be under constant pressure during the entire process and will retain its carbonation.

Counter Pressure Bottling in Practice

• While the theory is straightforward, using a counter pressure bottle filler the first few times can be a challenge.

Here are some tips to help keep things under control