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Counter Pressure fillers
What is a counter pressure filler?
A counter-pressure bottle filler is a device that fills bottles by equalizing the pressure inside the bottle with the pressure of the carbonated liquid being dispensed. This prevents the liquid from foaming excessively or losing its carbonation.

What is the process of isobaric filling?
The principle of isobaric filling relies on maintaining a constant pressure between the beverage tank and the bottle throughout the entire filling process. This is achieved by introducing CO₂ gas into the bottle before filling, creating a counter-pressure that matches the pressure in the tank.
Good and "FoodTecExperts" tester fillers find here: https://www.bottleguard.at/english/
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