The filter cartridge is the most important element of the filter system. Filter elements with one process remove solid impurities + water + soft sludge (sediments, resins, varnishes). Filter elements are made according to the type of treated liquid. For industrial liquids based on petroleum products, the filter elements are made of special cellulose produced according to a special recipe. The cellulose is wound onto the core on computer-controlled winding machines. The cellulose coil, which ensures the precise capture of contaminants, is adapted specifically for individual types of filter inserts. The lower part of the filter insert is pressed into a reinforcing paper circle so that it has a higher density than the upper part. This design guarantees gradual capture of contaminants. Larger contaminants are captured in the upper part and smaller ones up to 1 µm in the lower part of the filter insert. The hard paper circle increases the accuracy of filtration and prevents deformation of the filter elements.
Type H Doublepass, H Triplepass is designed for gentle filtration and treatment of oils with emphasis on removal of soft sludge, deposits, varnish, resins and particles. The filter element design provides high efficiency per flow, double or triple. Type H Doublepass, H Triplepass requires the use of a quick release filter body extension. The filter element removes and traps water and solid particles from 3µm in size. The filter element is specially designed to remove solid particles to NAS1638 cleanliness class 4, ISO4406 15/13/10. The H Doublepass, H Triplepass filter element is designed for oil treatment in proportional valve and servo valve systems.