Specialty
overflow filling machine is constructed with anti corrosion characteristics and specialty nozzles depending on the application.
Thick products like this will simply will not pass through
an overflow filling machine and some very heavy greases will cause pumps in a servo filling machine to cavitate.
Although more costly than
an overflow filling machine, the piston filler has an excellent cost to performance profile.
Because these products are sold volumetrically,
the overflow filling machine is used infrequently as the container might possibly give away product due to expansion of the container under pressure.