Hydraulic systems where water fluid is properly free of contamination are more efficient, produce less noise and have a longer service life. MUT DF COMPACT composite dirt separator with magnet are used to remove continuously impurities in the hydraulic circuits. They allow to separate impurities, collecting them in the lower part (collection sump). Inside the “dirt separator”, in a position transverse to the direction of flow, there is a new, special filter with “Cyclone effect”: the particles of impurities bumping the grid undergo a further reduction of speed, and then settle more easily. The periodic twisting-off of the purge valve allows to empty the collection sump.