GAMMA series - metal and grease-proof filter panels Filtration SdgiCofim Technical features PFI - PFM - PFO/M metal filter panels are special products suitable for heavy duty applications. PFI models are grease-proof panels suitable for installation in the extractor hoods of professional kitchens. They have an AISI 304 stainless steel frame with medium in AISI 304 stainless steel as well, with micro-stretched sheet-steel. These filters have a high oil and grease holding capacity and are totally re-generable. They are mechanically very strong and can work at temperatures up to 300°C. PFM - PFO/M models have a galvanized steel frame with electrically welded grids on both sides; the medium is in galvanized steel, with flat wire metal mesh. The low pressure drop level of these filters assures modest extraction fan energy consumption rates. The aluminum version, PFM/A model and the AISI 304 stainless steel, PFM/S model, are also available on request PFM and PFO/M filters are suitable for strong concentrations of dust in the air and where you need high resistance to high temperatures (up to 250°C.): • Hot air generators for civil and industrial facilities • Electric motors and industrial machineries ventilation • Oily mists separators • Filtration walls for industrial systems • Plants for mobile vehicles subject to vibrations Type Dimensions (mm) Nominal Filtering Initial PFI air flow rate Q surface pressure drop ✓ Product ready in Stock / *1 m3/s x 10-3 = 1 l/s Technical draft Typical curves