Volumetric screw feeder (doser) Digidale volumetric screw feeder working with the principle of mechanical fluidisation and guarantees the problem free discharge in continuous as well as precious batch operation of granular and powdery product such as flour, milk powder, salt, starch, flakes, coal, pallets, bentonite, washing powder and agglomerates etc. The volumetric screw feeder has only five moving parts, drive, coupling, screw and two bearings and it is virtually maintenance free. An agitator/conditioner screw available in all feeders fills the screw completely resulting in desired feed accuracies. As per customer requirment