The filtration elements use patented pleated filter media which are available in several grades to accommodate particle removal down to 5 micron or 3 microns in size, with oil removal at 0.5 micron or 0.01 micron levels. These elements provide filtration efficiencies from 99.99% to 99.99999% with a further grade being specific to oil/aerosol removal down to 0.003mg/m utilising activated carbon technology. These figures are for operation at 7 bar pressure and 20°C, while all elements are validated and ensure compressed air to ISO 8573.1 standard.
The filter units incorporate die-cast filter housings made from high-grade aluminium with both external and internal surfaces Alu-Chrome treated. The housings also have a tough epoxy baked-on paint finish, helping provide long-term protection, even when subject to the harshest operation conditions.