Fresco Systems Australasia has increased their range of high quality stainless steel dust collectors and filter units. The innovative designs incorporate many new features including hygienic design, full stainless steel construction, easy side and top access, improved filter cleaning, increased body strength, larger air receivers and optional explosion vents. Each unit is manufactured from 304 or 316 grade stainless steel including the filter cartridge end caps. Standard filter sizes ranging from 21m² to 147m² allow for air flows from 720-5,400m³/hr with efficiencies of 99.999% to 0.5micron. The housings are all cylindrical providing clean designs and high strength in both pressure and vacuum applications.
The filter housing can be either be welded to the hopper for critical hygiene applications or flanged for fitment to silos, existing equipment or to facilitate ease of installation. Dust-laden air enters the hopper section via a tangential or parallel entry port with heavy particulate dropping out into the hopper below with light particles collecting on the filter media. The filter cleaning is via a reverse pulse filter cleaning system using diaphragm valves and blow tubes. The intermittent pulsing is controlled via a solid state frequency timer with easily adjustable settings. The dislodged particles drop into the integral hopper below or silo etc depending on the application. Discharge from the hopper can be controlled by rotary or butterfly valves.
Certified explosion vents rated to 0.1bar are fitted where required which can be ducted to a safe discharge location. Optional burst sensors detect when the explosion vent has failed and provide instantaneous feedback to the plant control system. Optional no-certified explosion vents are also available on request.
Typical dust collector applications also include the Fresco fan which is molded from PVC with a one piece molded PP rotor. The fans are available in two models ranging up-to 3,000m³/hr with up-to 125P suction. Noise levels rated at 75dba are typical without the use of any additional silencers. These fans are ideal for harsh corrosive environments where longevity is required. Larger fans are available in carbon or mild steel.
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