How do ABA liquid fillers work?
ABA designs and manufactures filling machines to operate by volume, net weight or mass flow. Technical descriptions for each machine model can be accessed from our information center.

Why do you use double acting positive displacement pumps in your volumetric machines?
Our volumetric pumps are flooded with product on both sides of the piston; this means that there is no “dry side” to our pumps which increases seal and cylinder life and the speed of fill. When filling a gallon can, for example, ½ gallon is filled on the forward stroke and ½ gallon on the return stroke. Not having a prime cycle means that the pumps are ready to fill the next container the moment they have finished the previous one.

Check out competitors single acting pumps in the field! Chances are high that you will see product dripping out of the dry side of the piston, this is product which should be going into your customers cans!

We are still servicing 35 year old volumetric double acting pumps (which originated from the UK and upon which our designs are based) these machines are built to last!

Do you make both volumetric and net weight filling machines?
Yes, we make both of the above and also offer units with Coriolis mass flow meters for extremely high accuracy.

Are net weight machines more accurate than volumetric machines?
Not necessarily and typically no. A net weight machine can be more accurate if you are willing to sacrifice speed for accuracy. Typically, head for head, in-line net weight machines are about half the speed of volumetric machines and match the accuracy (which we guarantee at +- 0.25% by volume) In the real world, once net weight machines are installed in a production environment speed is everything and accuracy falls away!

I have heard that net weight machines are much easier to clean, is this true? A net weight filling machine has some ball valves, a short section of pipe-work and a fill head to clean whereas a volumetric machine has a pump, pipe-work and the fill head so the volumetric filling machine must be more difficult to clean…..

This is in fact a fallacy, unless you are gravity feeding to the net weight machine you have an auxiliary pump to clean as well as the connecting pipe-work. Our new swing head design allows the volumetric machines to be easily cleaned utilizing the filter tub – a completely integrated and simple system.

What happens when my production needs increase?
Our machines are modular in concept and typically are supplied with provision to have additional fill stations added on site at a later date. Our semi automatic machines, for example, can be simply automated at a later date by adding a conveyor and some simple controls.