Apparatus for the fluidification and transport of granular materials or powders, comprising: - a containment body for granular or powder material internally defining a containment compartment; - an inlet for supplying a pressurized gas into said containment compartment for fluidifying the material and generating a material flow; - a filter arranged in said inlet for supplying gas to allow the passage of the gas itself within the compartment and prevent the material from leaking out from said inlet; and - an ejection outlet for the material flow to transfer the material itself along a production line, said outlet having a passage duct that can be removably associable with the outlet itself to put the containment compartment in fluid communication with said production line; said filter comprises at least one support frame made of rubber and removably associable with said inlet, said frame having annular shape internally defining a seat for housing a mesh element made in the form of a cloth for holding the material, said mesh element and said frame are integrally made by vulcanization treatment; said inlet comprising an area for housing said filter having a pipe for feeding the pressurized gas; said inlet also having an annular recess for positioning the frame arranged around said pipe; characterized in that said annular recess is defined by at least one groove formed in a respective circular flange switchable between an operation condition, wherein it is attached to the containment body to keep the frame in the annular recess, and a replacement condition of the filter, wherein the flange is pulled away from the containment body to allow the removal/positioning of the filter itself; and in that said passage duct comprises a plurality of cylindrical bodies, each having an inner recess for the passage of the material flow with a predefined size; said cylindrical bodies being interchangeable within a tubular portion defining said ejection outlet according to the sizes of said inner recess. - a containment body for granular or powder material internally defining a containment compartment; - an inlet for supplying a pressurized gas into said containment compartment for fluidifying the material and generating a material flow; - a filter arranged in said inlet for supplying gas to allow the passage of the gas itself within the compartment and prevent the material from leaking out from said inlet; and - an ejection outlet for the material flow to transfer the material itself along a production line, said outlet having a passage duct that can be removably associable with the outlet itself to put the containment compartment in fluid communication with said production line; said filter comprises at least one support frame made of rubber and removably associable with said inlet, said frame having annular shape internally defining a seat for housing a mesh element made in the form of a cloth for holding the material, said mesh element and said frame are integrally made by vulcanization treatment; said inlet comprising an area for housing said filter having a pipe for feeding the pressurized gas; said inlet also having an annular recess for positioning the frame arranged around said pipe; characterized in that said annular recess is defined by at least one groove formed in a respective circular flange switchable between an operation condition, wherein it is attached to the containment body to keep the frame in the annular recess, and a replacement condition of the filter, wherein the flange is pulled away from the containment body to allow the removal/positioning of the filter itself; and in that said passage duct comprises a plurality of cylindrical bodies, each having an inner recess for the passage of the material flow with a predefined size; said cylindrical bodies being interchangeable within a tubular portion defining said ejection outlet according to the sizes of said inner recess.