The principle of air filtration in dry spray booths is very simple. The air enters the booth and is drawn, via an extraction fan which also carries any overspray, through an extraction filter. The choice of filter can depend upon the type of paint, lacquer or powder being used as well as the dimensions of the spray booth filter unit and the position of the booth within your factory. Our Procart range includes several different designs to best suit the material to be filtered. If your spray booth is was not originally fitted to receive Procart filters, then most booths can be easily adapted which will ensure your booth has a higher paint holding efficiency as well as being easier to use and better for the environment.

The Procart filter has been designed to capture a high level of paint (or lacquer, varnish, dust etc) whilst maintaining air flow due to the principle of inertial separation. Its 'V' shape, and the offset filter holes, ensure that the paint is held between the layers of filter whilst the air can continue to flow. Therefore, the spray booth airflow can continue, with little or no reduction, until the filter is full at which point it should be changed. When installing a filter from our Procart range, the hole on the 'flat' side faces forward and the accordion 'V' is behind (with filters that have a layer of fibre, this should be facing away from the sprayer, so on the back of the filter. This is the same for our Procart K filters). As the air continues through the filter, the paint cannot change direction and so remains within the filter. The centrifugal effect, of the circulating air, forces the paint particles into contact with the absorbent cardboard where it is held. Typically, a Procart filter will hold more paint (4 to 6 times) and maintain a higher airflow than a fibreglass filter which will become blocked on the surface once it captures any paint.