Hytrex Cartridge Filters

Osmonics' unique one-step manufacturing process continuously extrudes and thermally bonds pure polypropylene microfibers into a complex filter matrix. Microfilaments plus precise control maximize the ositive filtration characteristics of graded density, tight micron cutoffs and maximum void area with millions of tortuous paths. This fully automated manufacturing process assures consistent quality, filter to filter, year in and year out. New thermal and vacuum finishing procedures produce exceptionally clean filters imprinted for easy identification in the field.

  Many cartridges claim to be depth filters. But to be a true depth filter, a cartridge must be able to retain contaminants throughout the entire cross section of the filter. To accomplish this, the density must increase progressively from the exterior surface to the interior. This "graded density" allows larger particles to be trapped near the surface while smaller particles penetrate the larger open areas to be trapped nearer the center of the filter in the smaller openings. Without graded density, a so-called "depth" filter will operate in practice only as a surface filter. With only the surface area loading with dirt, the pressure drop will increase rapidly, dramatically reducing both the dirt-holding capacity and the effective filter life.

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