Offline filter units suitable industrial hydraulic and lubrication systems; reduction of the contamination class level and absobtion of the water content in the fluid of the main circuit; external motor/pump unit with continuos filtration even when the main system is not in use. Nominal flow rate from 2 up to 20 l/ max. system fluid volume 10.000 l; port connections 3/8", 1/2" and 3/4 BSP; high dirth holding capacity filter elements