Catalogue 9 - STAUFF Filtration Technology

26 www.stauff.com/9/en/#26 B Replacement Filter Elements for Applications involving Hydraulic and Lubrication Oils Protecting Filter Elements Against Direct Flow Impact The sensitive filter bellows on filter elements are frequently prone to damage during transportation, storage and filter replacement work. In addition, large particles in the flow of fluid may harm the filter material. STAUFF offers a solution: SE and RE series filter elements with protective sheath (only available for glass fibre elements). This is a thin, perforated plastic sheet that completely encases the pleats of the filter from the outside as well as making the element more stable. A further positive effect is that the volume of flow is distributed more evenly by the protective sheath, thus ensuring an efficient flow rate. In its standard version, the foil is printed with the STAUFF 4PRO logo, eliminating any mix-up with other brands. Larger quantities can also be produced with a customised imprint on the sheath. The STAUFF 4PRO Glass Fibre Elements The PLUS for customers: Longer operating times through higher dirt holding capacity Improved energy efficiency through lower differential pressure Excellent b values and outstanding b stability The 4Pro stands for 4 pros that characterise STAUFF glass fibre materials: • pro ACTIVE • pro FESSIONAL • pro GRESSIVE • pro TECTION Or simply: Fo(u)r Protection In terms of the β value, STAUFF elements have always exhibited excellent performance. For those who take filtration seriously, there`s no other valid approach – the measured values must hold up under any inspection. The elements cannot afford any vulnerabilities. The new generation of elements also have excellent dirt holding capacities. Values that users have been looking for. Values that make it possible for the user to extend operating times thereby providing significant reductions to purchasing costs for elements as well maintenance costs. PRO b value Key evaluation criteria for filter elements using glass fibre technology are the retention rate (micron rating) the β value, the β stability, the dirt holding capacity and the initial pressure differential. These values are determined using the multipass test established by ISO 16889. The designation for STAUFF elements typically includes a rating based on filter fineness. Filter designation β value > 200 according to ISO 4406 β (c) > 200 ISO 11171 β (c) > 1000 ISO 11171 03 4,0 µm (c) 4,5 µm (c) 05 5,0 µm (c) 6,0 µm (c) 10 8,8 µm (c) 11,0 µm (c) 20 21,0 µm (c) 23,0 µm (c) Filter Material – Quality And Properties The choice of the right filter material is dependent on different criteria. Among others, this includes the type of application, the filter function, degree of contamination or alternatively the required dirt-hold capacity as well as requirements of chemical or physical resistance. Inorganic Glass Fibre, Polyester, Cellulose, Stainless Fibre Material and Stainless Steel Wire Mesh are used for hydraulic applications. The following list gives you an overview of how these five filter materials differ with regard to specific properties: Inorganic Glass Fibre Inorganic Glass Fibre based on synthetic fibres with acrylic resin binding Large dirt-hold capacity Excellent separation efficiency of the finest particles due to the three-dimensional labyrinth structure with deep-bed filtration Outstanding price/performance ratio Micron rating 3 ... 25 µm (alternative micron ratings on request) Polyester Fibre 100% Polyester Fibres with thermal bonding High pressure differential resistance Good chemical resistance High separation efficiency of the finest particle Tear-proof structure Micron rating 3 ... 25 µm (alternative micron ratings on request) Stainless Fibre Sintered Stainless Fibres with three-dimensional labyrinth structure for depth filtration Low flow resistance with high dirt-hold capacity Excellent chemical and thermal resistance Micron rating 3 ... 25 µm (alternative micron ratings on request) Stainless Mesh Wire Mesh fabric made of material 1.4301 or 1.4305 for surface (other material on request) Type of weave: square weave or Dutch weave Low flow resistance due to large-pored screening surface Excellent chemical and thermal resistance Micron rating 10 ... 1000 µm (alternative micron ratings on request) Cellulose Fibre Filter material made of Cellulose Fibres with special impregnation Variants with lowest price with good dirt-hold capacity Not suitable for water based fluids Micron rating 10 ... 50 µm (alternative micron ratings on request) Catalogue 9 § Edition 02/2023 Replacement Filter Elements