Used Low Vacuum Filling Machines
A low vacuum filler doses liquid into the container by gravity while a slight vacuum removes air from the bottle. The filling height is defined by the return tube rather than by a volumetric measurement, which gives a constant visual level across bottles of the same format. Excess product returns to the tank.
Suitable products and containers
The principle applies to still, non-carbonated liquids in rigid containers, typically glass. Products that release CO₂ need isobaric filling, and containers that collapse under vacuum are not suitable. Viscosity, temperature and foaming behaviour influence valve selection and achievable output.
Format and line considerations
Confirm the bottle diameters, heights and volumes covered by the existing change parts, the number of filling valves, and how the machine is fed and discharged. A filler is normally combined with a rinser upstream and a capper downstream, so conveyor heights, transfer starwheels and machine speeds must be consistent across the line. Electrical supply, compressed air, vacuum capacity and CIP connections should be verified.
What to check on used equipment
Look at the filling valves, seals and return tubes, the vacuum system, the tank and product contact surfaces, bearing and cam wear, and the condition of the control cabinet, HMI and drives. Request the available format parts, documentation and drawings, declared service history and details of the safety guarding.
Sourcing through BottlingScout
BottlingScout lists used low vacuum filling machines offered for sale with the technical information provided by the seller, photographs and equipment identification, so available options can be compared and enquiries made on a specific machine.