How Gravity Fillers Reduce Oxidation in Wine

Views: 2109 Author: Howie SUN Publish Time:
Beer and wine are oxygen-sensitive products first and filling-speed problems second, so the filler is specified around dissolved oxygen and closure integrity.
Key facts at a glance
Valve typeIsobaric for beer, gravity or volumetric for wine and spirits
Rated output4,000-20,000 BPH on glass
BottleGlass, 200-750 ml typical, crown or ROPP closure
Key controlDissolved oxygen, fill height, closure torque
Line scopeRinser, filler, capper or crowner, labeller, packer
CleaningCIP with caustic and rinse cycles

Why does beer need counter-pressure filling?

Beer carries dissolved CO2 and is extremely sensitive to oxygen. Counter-pressure filling keeps CO2 in solution and limits contact with air. The alternative, filling warm and flat, destroys the head and shortens shelf life. This is why a beer filler and a wine filler are rarely the same machine.

What does dissolved oxygen do to beer and wine?

Oxygen drives staling. In beer it shows as cardboard and paper notes within weeks; in wine it flattens fruit and browns the colour. The main entry points are the filler bowl, the space between fill and closure, and the closure itself. Measuring in the finished bottle is the only number that counts.

PackageFillingLine rate on glass
Glass bottle, crownIsobaric4,000-20,000 BPH
Glass bottle, ROPPIsobaric or gravity4,000-20,000 BPH
Aluminum canIsobaric + seamerUp to 25,000 CPH
PET, short shelf lifeIsobaricHigher rate, lower barrier

The Filling Machine for Glass CSD is the reference unit for this configuration.

Why do glass lines run slower than PET lines?

Glass weighs more, breaks, and needs mechanical spacing instead of an air conveyor. Every transfer is a potential breakage point, so the line runs at a lower rate and with more accumulation. A 20,000 BPH glass line is a different engineering problem from a 20,000 BPH PET line.

Rated output, change parts and services are listed on the Gravity Filling Machine for Glass Bottle Wine page.

How is a wine line different from a beer line?

Wine is usually filled still and often under inert gas, with a focus on oxygen and sulphite rather than CO2. Beer needs counter-pressure and foam control. The bottle handling is similar; the product protection is not.

The same question is worked through from another angle in How Gravity Filling Machines Handle Wine in Glass Bottles.

How to read the numbers. Capacity figures come from the specification range, and the range is wide by design. Beer lines lose rate to foam control and CIP rather than to filler speed. Plan on a factor of 0.60-0.80.

Frequently asked questions

What is a normal dissolved oxygen target for beer?

The target is set by the brewery and the shelf life claim, and it is measured in the finished package. The line design should minimise pick-up at the filler and the closure; the exact limit belongs in the product specification.

Can a beer line fill both bottles and cans?

Only with two different fillers. Bottles are filled on an isobaric bottle filler with a crowner; cans on a can filler with a seamer. Some plants run both, but as two lines sharing utilities and packing.

Can a wine line run without a corker?

It needs a closure station matched to the closure: cork, screw cap or crown. The filler and the closure machine are specified together, because the bottle finish and the head are one decision.

Why does a glass line foam more than a PET line?

Glass surfaces and higher fill temperatures nucleate gas faster. The pressure ramp at the end of fill and the product temperature are the two settings that reduce it.

Key takeaways
  1. Glass runs slower than PET because of weight, breakage and spacing.
  2. Each closure type needs its own capping head, not an adjustment.
  3. Closure type is chosen with the bottle, not after it.
  4. Glass lines carry inspection because breakage travels.
About the author
Written by the Sunswell engineering team - led by Howie SUN, Founder & CEO, with 14 years in filling and blow-moulding equipment R&D and turnkey project delivery across 71+ countries.
Last reviewed: 2026-08-28 . Reviewed by Sunswell engineering team
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