Used isobaric (counter-pressure) filling machines are designed for any carbonated product — beer, sparkling wine, Prosecco, CSD and sparkling water. Isobaric filling pre-pressurises the bottle with CO2 to match the product tank pressure, allowing carbonated liquid to transfer without foam or CO2 loss.
Used isobaric fillers appear from KHS, Krones, Sidel, GAI, Bertolaso, Comac, SMI and other OEMs, across throughputs from craft to industrial scale. Rated output and pressure are stated per machine.
Buying Guide — Used Isobaric Filling Machines
Critical inspection points on used isobaric fillers: the rated working pressure shown for the specific machine compared with your product and process, counter-pressure valve condition (worn valves cause CO2 loss and fill-level variation), CO2 pre-evacuation system integrity, oxygen pickup at operating speed, and the pressure-equipment documentation available for that machine.
Product-specific requirements vary: beer calls for low oxygen pickup, sparkling wine for inert-gas bottle pre-flush, and CSD for the carbonation level of your own recipe. Confirm the filler is configured for your product before purchase.
Frequently asked questions
What is counter-pressure filling?
Counter-pressure (isobaric) filling pre-pressurises the bottle with CO2 to match the product tank pressure, then opens the filling valve so carbonated liquid enters without losing dissolved CO2 or foaming.
Can an isobaric filler run both beer and sparkling wine?
Sometimes, if the rated pressure shown for the machine covers both applications and the valves are compatible. Beer is normally run to a lower oxygen target than sparkling wine, so check the pre-evacuation system against both products.