NFK 3000 – Drag Chain Series

NFK 3000 – Drag Chain Series

Suited to High Dust Loads and High Air Volumes

For applications involving high airflows and high material concentrations, Airtight Solutions have designed the NFK3000 Reverse Air Filter Drag Chain Dust collector series. This series can handle air volumes from 20,000 – 500,000m3/h, meaning there is a capacity to suit you. .

The NFK dust extraction system is widely known for its superior performance, reliable function and cost effectiveness, being used in more chain applications than any other brand.
Requiring minimal maintenance and being modular in design means the NFK series will continue to serve the needs of your business for years to come. Today, the NFK series is the product of choice for Australia’s largest manufacturers who undergo high dust load or air volume applications.


  • Modular, extendable design that will serve your business’s needs as it grows
  • Self-cleans while in operation
  • Minimal maintenance required
  • Low running costs
  • ATEX compliant – adheres to European safety and emissions standards
  • Does not require Compressed Air


Airtight Solutions’ NFK dust collector series feature an efficient self-cleaning baghouse that can high dust and air volumes. Able to operate continuously while cleaning its own filter bags, the NFK is now the go-to choice across a variety of industries for their respective dust extraction needs.

The NFK series, generally speaking, services 20-500,000m3/hour when used for high dust load applications. Some common applications for the NFK series include saw mills, timber processing plants, food processing or other large manufacturing plants.

Each of Airtight’s dust collectors are designed with safety as the top consideration, which is why they include a combined inspection and explosion relief door as well as safety switch.

The NFK dust extraction system also includes various inlets for multiple fans, allowing the operator to run independent ducting systems on the same unit at low cost.

The medium and large particles are first separated in the filter inlet chamber, dropped into the hopper and finally deposited to the filter bags. This material is then transported to the rotary valve by the heavy duty drag chain and disposed into a silo, container or separate material transport system.

To ensure continues operation, the NFK dust extraction system includes a rotary valve, variable speed drive, patented XT15 antistatic filter socks and an on-line PLC controlled reverse air cleaning system as standard inclusions.


The system is designed for multiple fans to run once, with individual sections being able to be controlled and set to run independently. Airtight Solutions advise that multiple mid-sized fans may be preferable over a single larger fan.


The modular design of the NFK means it can easily be extended to suit your business’s changing needs.

Common Applications

  • Large joinery and cabinetmaking facilities
  • Timber and processing plants
  • Sawmills

Benefits of the NFK Dust Extraction System

  • Lowest pressure drop available on the market
  • Modular and expandable design
  • Option to customise
  • Fully automatic operation
  • Low profile of 5000mm
  • Zoned system
  • Requires no compression air
  • Variety of waste collection options

The NFK system has been used by countless Australian manufacturers including:

  • Corinthian Industries
  • Sara Jane Furniture
  • Carter Holt Harvey
  • Hume Pine
  • Laminex
  • Fulton Hogan
  • Fletcher Construction

Dust Collector Facts

Technical Features

  • 100, 85m2 XT15 antistatic filter socks
  • 2400W, 1200D, 5800H dimensions (height can be adjusted for your application)
  • Dependant on the dust load, the typical application may be 450Ø inlet 24,000 m3/hr
  • Integrated PLC allows for on-line cleaning
  • Continuous operation thanks to NRS rotary valve

Technical Parameters

  • 75°C maximum working temperature
  • Separate inlet module or inlet through hopper
  • Filter bags reverse-air clean while operating thanks to regeneration fans
  • Combined explosion relief and inspection doors with safety switch
  • Available in negative (5,000Pa) and positive (800Pa) pressure options
  • Rolled galvanised steel finish


  1. Screw auger and rotary valve extension
  2. Telescopic leg extensions
  3. Transfer “blow-line” systems
  4. Spark arrest features
  5. Silencers
  6. Performance and service testing
  7. Extended warranties available

Airtight Solutions has engineered solutions

for a wide variety of companies.

Some Airtight NFK Filter Customers Include:

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