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The Remarkable Story of DFOBegan with the Oval Cartridge Filter Itself

DOWNFLO OVAL FILTER STANDARD FILTER

Ultra-Web

®

Nanofiber Media.A dramatic depar-ture from traditional circular-shaped cartridge filters,DFO’s oval-shaped filters, in conjunction with our patented nanofiber filter media, trap more dust on thesurface of the filter than conventional commoditytypes of filter media such as depth-loading cellulose,polyester or cellulose/polyester blend.

Unique Oval Shape Contributesto Higher Airflow Capacity

NANOFIBER MEDIA

High Performance Filters.The Downflo Oval filter design is a reflection of Donaldson’s commit-ment to technical research and development. Oval-shaped filters handle up to 25 percent more airflow without increasing velocities, which can cause filter abrasion. Sophisticated Fluent

10 micron 10 micron
®

* airflow modellingsoftware revealed that oval-shaped cartridge filtershave fewer areas of high velocity, resulting in a lowerpotential for media abrasion and increased filter life. Dirty AirDirty AirClean AirClean Air

600X Nanofiber technology is available in all Ultra-Web and Fibra-Web cartridges Conventional media has spaces of up to 60 microns betweenfilbers, allowing dust to become deeply embedded * FLUENT is a registered trademark of Fluent, Inc. COMMODITY FILTER MEDIA STANDARD COLLECTOR: 12430 m
3 /hr 600X

The Innovation Continues withDFO’s Shorter, Stiffer Filter Pleats

DOWNFLO OVAL COLLECTOR: 15540 m
3 /hr

DFO Filter Media Pleats.Shorter and stiffer filterpleats help minimise dust entrapment and simplifyfilter cleaning. By reducing the height of the filterpleats from the standard 50 mm to 38 mm, the pleatwall is less likely to collapse or bend, an event whichcan encapsulate dust and prevent its expulsion.