The cartridges are used to remove solid particles from a gas flow. The filtering elements consist of a set of cartridges made of fiberglass or other material arranged in a pack and are selected according to various parameters, which include the efficiency required, the pressure loss allowed and the type and quantity of impurities present in the gas.
The filtration efficiency of this device is 99.5% for solid particles with a diameter of at least 3 microns.
When fitted with special, coalescent cartridges, this filter may also be used to remove liquid particles. When this is the case, the liquid particles present in the gas in the form of mist are blocked by the fibers of the cartridges and agglomerate by coalescence into increasingly large drops which precipitate to the bottom of the filter due to gravity.