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  • Release date:2018/12/29
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The Donaldson Torit® Downflo® Oval cartridge dust and fume collector sets the standard for industrial dust collection – by providing a 25% increase in airflow capacity, improved airflow path, and a 29% increase in pulse cleaning pressure. These compact, high-efficiency units use high efficiency oval-shaped cartridge filters, especially well-suited for filtering the sub-micron dust. 

A Family of Over-Achievers

The high performance Downflo Oval (DFO) family of dust collectors provides up to 25% more filtration capacity than other same-sized cartridge collectors. Powered by proprietary Ultra-Web® nanofiber filtration technology, DFO delivers cleaner air, up to two times longer filter life, and greater cost savings.

A smaller collector helps lower the initial purchase price, reduces filter replacement costs and opens up valuable manufacturing floor space.

DFO Offers:

●  Lower initial cost per cubic meter of air per hour (m3/h) / cubic foot of air per minute (cfm)

●   Higher efficiency—cleaner air

●   Lower pressure drop—greater energy savings

●   Fewer filter changeouts

●   Reduced filter disposal cost

●   Easy system setup

●   Less maintenance

Outperforms Other Collectors

DFO collectors offer some strong benefits that distinguish them from all other collectors available in the market today.

Easy to Use
Quick-release handles provide easy cover removal and faster filter access.

Smaller footprints for applications that require maximum cleaning efficiency in even smaller spaces.

DFO collectors provide 25% more capacity than same-sized dust collectors.

Cost Effective
The proprietary ExtraLife Filter Cleaning System averages up to 30% increase in pulse cleaning energy for unmatched cleaning ability.

Unique oval-shaped Ultra-Web cartridge filters provide the longest filter life and highest filtration efficiency—which lowers cost.

Unique Oval Shape Contributes to Higher Airflow Capacity

The Downflo Oval filter design is a reflection of Donaldson Torit’s commitment to technical research and development. High performance oval-shaped filters handle up to 25% more airflow without increasing velocities, which can cause filter abrasion. Sophisticated FLUENT® Airflow Modeling Software revealed that oval-shaped cartridge filters have fewer areas of high velocity, resulting in a lower potential for media abrasion and increased filter life.

Standard Collector

Downflo® Oval

Airflow Breakthroughs Lead to Higher Filtration Efficiency

Sophisticated computer modeling for fluid dynamics, structural mechanics and acoustics puts DFO models 1-1, 2-2, and 3-3 in a technical class all their own. The illustration below (left) shows how FLUENT Flow Modeling Software enhanced the uniform air velocity distribution through model DFO 3-3. ANSYS® Structure Analysis Software shown below (right) demonstrates lowest stress levels and deflections for model DFO 3-3 under typical operating pressures.

DFO 3-3 Air Velocity Distribution

DFO 3-3 Stress and Deflections Mode

                  Convex Side Walls

Technical discoveries improve filtration performance and prolonged filter life. A new cabinet design with convex side walls streamlines the airflow path and increases the cabinet’s cross-sectional area. The convex side walls provide more space between filters, lower cabinet velocities and reduce the potential for media abrasion.

Cross-Sectional Area of Collector Dirty Air Plenum

Standard collector (left) versus Downflo Oval collector (right)
DFO with ExtraLife Cleaning System

Pulse Cleaning Technology

ExtraLife Filter Cleaning System uses proprietary, computer-modeled pulse cleaning technology to easily “pulse off” dust from the surface of the filter, improving filtration efficiency and prolonging filter life. The red lines in the illustration show the increased pressure at the front of the Downflo filter generated by the ExtraLife system. The blue line shows the pulse signature of a standard cartridge collector.

Pulse gradients produced by the standard Downflo during pulse cleaning compared to gradients produced by a Downflo with the ExtraLife Cleaning System (red).


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Key words:Filtercartridgedustcollectormanufacturers,Bagfiltermanufacturer,Cyclonedustcollector


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