RAF Drag Chain Series Reverse Airflow Dust Collector

Key Benefits
  • Modular design that delivers reliable extraction for today and in the future
  • Extendable as your requirements grow – future proofing your investment
  • Efficient self-cleaning while in operation
  • Very low maintenance and running costs
  • ATEX compliant. Designed to strict European safety and emissions Standards
  • No Compressed Air requirement!

The RAF Drag Chain (DC) Series dust collector series is a highly effective self-cleaning baghouse designed to handle high dust volumes and high air volumes. They are designed for continuous operation and work efficiently by automatically cleaning the filter bags while running. The RAF-DC is the industry standard for dust extraction systems.

The RAF-DC Series typically service from 20-500,000m3/hour on high dust load applications. These applications can include timber processing plants, banks of moulders; sawmills, food processing or large manufacturing plants.

Each dust collector module is fitted with a combined inspection and explosion relief door. A safety switch ensures automatic shutdown in case of emergency.

The RAF-DC dust extraction system has dedicated inlet modules for multiple fans, allowing you to run separate and independent ducting systems on the same unit at a low cost.

The medium/large particles are separated in the filter inlet chamber, drop into the hopper, and the air is afterwards distributed to the filter bags. The collected material at the hopper is conveyed via the heavy-duty drag chain to the rotary valve and discharged – typically to a silo, container or separate material transport system.

The RAF-DC dust extraction system comes standard with Rotary Valve for continuous operation, a Variable Speed Drive for low running cost, the patented XT15 antistatic filter socks and an on-line PLC controlled reverse air cleaning system.


The option to run multiple fans on the same system allows you to control individual sections of your production independently. Multiple mid-size fans can offer advantages over a single larger fan.


The RAF-DC Series is modular by design and the system can easily be extended if your extraction requirements increase in the future.

Typical applications:

  • Larger Joinery & cabinet making plants
  • Timber & Processing plant
  • Sawmills

Advantages of the RAF-DC dust extraction system:

  • Lowest pressure drop of any system on the market
  • Modular
  • Expandable
  • Customizable range
  • Fully automatic operation
  • Low profile (5,000mm)
  • Zoned system design
  • No compression air requirement
  • Multiple waste collection options

Proven in countless applications for Australias largest manufacturers, including:

  • Hume Pine,
  • Corinthian Industries
  • Carter Holt Harvey
  • Sara Jane Furniture (Australia’s largest furniture manufacturer)
  • Fulton Hogan
  • Laminex
  • Fletcher Construction

Dust Collector & Quick Facts

Quick Facts

  • 85m2, 100 patented XT15 antistatic filter socks
  • Dimensions: 2400Wm 1200D, 5800H (height variable for each installation)
  • Typical application: 450Ø inlet 24,000 m3/hr (dependant on dust load)
  • On-line cleaning via integrated PLC
  • NRS Rotary valve for continuous operation

Technical Parameters

  • Maximum working temperature: 75°C
  • Inlet through a hopper or separate inlet module
  • Regeneration fan per cell for reverse-air cleaning of filter bags while operating
  • Combined inspection and explosion relief doors with a safety switch
  • Available in positive (800Pa) or Negative (5,000Pa) pressure options
  • Finished in rolled galvanised steel


  1. Rotary valve extension and screw auger
  2. Telescopic leg extensions
  3. Transfer “blow-line” systems
  4. Spark arrest solutions
  5. Silencers
  6. Service & performance testing
  7. Extended warranties

Customers using Airtight’s RAF-DC filters include:

  • Hume Pine,
  • Corinthian Industries
  • Carter Holt Harvey
  • Sara Jane Furniture (Australia’s largest furniture manufacturer)
  • Fulton Hogan
  • Laminex
  • Fletcher Construction

For High Dust loads/High Air Volumes

The RAF-DC Reverse Air Filter Drag Chain Dust collector series is designed for high air flows with high material concentration. It typically handles air volumes from 50,000 – 500,000m3/h.

The RAF-DC dust extraction system’s superior performance, reliability and cost-effectiveness have been proven in more chain applications than any other brand.
This system is incredibly reliable and cost-effective to run with minimal maintenance. Modular by design the RAF-DC series can be extended as your business and filter requirements grow – future proofing your investment!
The RAF-DC series has become the default product selection for high dust load /air volume applications, requiring continuous operation by Australia’s largest manufacturers.

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