The equipment, called a bag filter, has as principle the concentration of particles aspirated on the surface of a filter medium, which by an induced  countercurrent air flow (Cleaning against current _ LCC), air injection compressed (Cleaning by compressed air _ LAC), or mechanical vibration, causes the separation of particles accumulated on the surface of the applied filter media, directing them to a collector, which by screw conveyor, rotary valve, removes them to the outside.

There are several kinds of textile fibres and protective chemical treatments on the market, which must be carefully selected on a case-by-case basis, depending on the nature of the treated gases, particle content, temperatures, among others.

The bag filters are presented as the best solution for the treatment of particles, in dry industrial processes, easy to maintain and with almost universal applicability, adapting, its geometry and components to a versatile range single filters, Doble filters and Silos filters.