Application Return-flow filter or off-line filter in hydraulic and lubrication systems. Performance features The EXAPOR®MAX 2 and EXAPOR®AQUA ultra-fine elements are the heart of the ARGO-HYTOS off-line filters. High separation efficiencies guarantee excellent cleanliness levels and thereby highest protection of components. The high dirt and water capacity of the EXAPOR®MAX 2 and EXAPOR®AQUA elements allows economical operation of the machine. Special design features User-friendly filter element change: The cover of the FN 040 can be opened without special auxiliary tools. The filter element can be removed from the housing together with the cover. Dirt retention valve: The element is flown through from the inside to the outside. The built-in dirt retention valve closes automatically when the element is removed, ensuring that all dirt is removed from the housing together with the element. Because of the cover design, the filter element change can be carried out almost without losing any oil. Filter elements Flow direction from the inside to the outside. The star-shaped pleating of the filter material results in: › large filter surfaces › low pressure drop › high dirt-holding capacities › particularly long maintenance intervals