Below are also some frequently asked questions that our brewery friends have been asking:

Compatibility with existing filling lines?
The Gprokeg kegs can be filled manually, semi-automatically and full automatically and are compatible with the existing standard filling lines. More technical information is available per request.

Do the kegs require cleaning before filling?
No, the inner bag is prepared with sterilization and air replacement by inert gas. No additional cleaning, sterilization and air replacement, etc. is needed.

Do you need to “flush” the kegs before filling?
No, the inner bag of Gprokeg kegs is flushed during the production stage with 99.99% CO2 and vacuumed so that there is no air in the inner bag. The brewer can fill the beverage directly into the inner bag without any additional flushing.

Is the keg filled upside up or upside down?
As the beer is filled into the inner bag, the air in the keg is separated from the inner bag, the Gprokeg keg can be manually filled both upside-up and upside-down but we recommend to do it upside up.

What tests or preparation do I need to do before kegging?
A vacuum check on the inner bag is needed to ensure the bag is intact and that there is no leakage from the valve. The test is very similar to the one carried out on metal kegs but slightly simpler. More technical information is available per request.

What is the head space of filled kegs?
The head space is about 0.5L for all Gprokeg kegs.

What is the maximum CO2 pressure and the back pressure during filling?
We recommend 3 bar for filling pressure of CO2 and 2 bar for back pressure.

How to depressurize the keg when the keg is empty?
The depressurization process is quite simple. You only need to use the disassembly tool to connect to the keg speak, press down the handle and this action depressurizes the keg. Alternatively this can also be done using any standard coupler.

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