North American First: Tiger-Vac gets portable vacuum cleaners certified for Class II Division 2 by OSHA approved NRTL

altDecember 8, 2014 - Tiger-Vac, manufacturer of industrial vacuum cleaners, is proud to announce that two of its flagship models, CWR-10EX (4W) and C-10EX (DT) MFS, have been officially certified by CSA, a Nationally Recognized Testing Laboratory (NRTL), as meeting OSHA's Combustible Dust NEP requirements. This certification meets America’s stringent regulation in industrial housekeeping and is a first in the domain.
Introduced in 2008, OSHA's Combustible Dust National Emphasis Program (NEP) contains policies and procedures for inspecting workplaces that create or handle combustible dusts. These dusts may cause a deflagration other fires, or an explosion. In this context, proper housekeeping methods include the use of a dust ignition protected, portable or fix industrial vacuum cleaner system.
Tiger-Vac's CWR-10EX (4W) and C-10EX (DT) MFS have both been tested and legally certified by CSA for use in Class II, Division 2, Groups F & G work environment. They are recognized as dust ignition protected, therefore meeting all of OSHA's Combustible Dust NEP requirements. In short, these vacuum cleaners are recognized and certified as a safe way to pick-up combustible dusts in a hazardous location.
CWR-10EX (4W) and C-10EX (DT) MFS feature stainless steel construction and HEPA or ULPA filtration. While CWR-10EX (4W) is rated for use in a cleanroom environment, it can be part of any housekeeping program in an industrial environment.
To have portable vacuum cleaners certified for Class II Division 2 by an OSHA approved NRTL is a North American first. While Tiger-Vac is proud of this achievement, the company hopes it will pave the way to further product certification and, ultimately, to much needed clarifications in a market where requirements for category of product is not always well understood by customers and manufacturers.

About Tiger-Vac Inc.
Manufacturer of specialized vacuum cleaners designed for specific industrial applications, Tiger-Vac has over 40 years experience and an unmatched commitment to the safety of your workers and your work environment. Recognized as an industry leader, Tiger-Vac offers a complete line of explosion proof/dust ignition proof vacuum cleaner systems for the recovery of combustible and flammable materials, vacuum systems with manufacturer certified HEPA and ULPA filters for cleanroom applications and contamination-controlled environments and vacuums for all heavy-duty applications in hazardous locations, such as metalworking, powder coating, aerospace and the food industry.  For more information on our complete line of products and to learn more about industrial vacuum cleaners, visit our website: www.tiger-vac.com

About CSA
CSA Group provides testing and certification, product evaluation, energy efficiency verification and standards development services for the global market. Widely recognized by numerous North American and international organizations for providing testing & certification services, it is recognized, amongst others, by the U.S. Occupational Safety and Health Administration (OSHA) and accredited as a Nationally Recognized Testing Laboratory (NRTL). For more information, visit http://www.csagroup.org

The recovery of Aluminum Dust with a “WET Mix Immersion Separator”

Nationally Recognized Testing Laboratory (NRTL).
What requirements does OSHA have regarding NRTL’s?

OSHA standard, which are law, contain requirements for testing and certification by NRTL’s.

An explosion proof vacuum cleaner and dust collector must bear an NRTL certification.  In this case it is Class II, Division 1, Group E.

This certification applies to the entire assembled piece of equipment and not only for the components.

The “Wet Mix” or also commonly called “Immersion Separator” uses liquids to neutralize, or render inert, metallic dusts.  In this case Mineral Oil can be used for all commercial alloys with the exception of Zirconium.

To recover Zirconium dust, water is the only neutralizing agent that should be used.   

On the other hand, water should not be used to neutralize aluminum.  If water is the neutralizing agent used to recover aluminum dust then hydrogen gas can be generated.  If this is the case then a device “valve” can be installed onto the piece of equipment to evacuate the hydrogen gas.

As per NFA 484, it is also suggested that NRTL certified equipment be used.  In this case an explosion proof portable vacuum cleaner for the recovery of aluminum dust, or any other metallic dust, into a dry collection bag as long as the quantity to be recovered is less than 5 lbs.

The recovered metallic dust must be disposed of after a maximum 8 hr shift.

Following this type of procedure not only complies with the Authorities Having Jurisdiction (AHJ), but also with the workplace Canadian Center for Occupational Health & Safety (CCOHS) or Occupational Health & Safety Administration (OSHA)
Rocco Mariani

Specialist in Hazloc Housekeeping and Recovery of Combustible/Conductive Dust and Flammable Liquids


ATEX Category 1/3D Certified Industrial Vacuum Cleaners

ATEX Category 1/3D Industrial Vacuum Cleaners are certified by a Notified Body: 

  • Outer part: Cat. 3 (Zone 22) 
  • Inner part: Cat. 1 (Zone 20) 

This certificate has been obtained by following the "good manufacturing practices." 

Tiger-Vac's ATEX Cat. 3 (Zone 22) industrial vacuum cleaners are safe for the recovery of combustible dust in every day maintenance in work areas. 


CD-25L (DT) EX (MFS) Promo


CD-25L (DT) EX (MFS):

Discounted for a limited time


Class I, Division 1, Group D T3C and Class II, Division 1, Groups F and G

  • Legally certified explosion proof/dust ignition proof by a notified body
  • Optional HEPA or ULPA Filter.
  • Muffler and manometer included
  • Equipped with Manual Filter Shaker (MFS)
  • Designed for general maintenance
  • For dry recovery only
  • All stainless steel construction (except cart)
  • Detachable Recovery Tank with a capacity of 7.4 gallons (28 liters)
  • Complete tool kit included

Click here for more information on this model.

Aluminum Dust Inertization Demo

Above is Tiger-Vac's latest video in a series on safely recovering aluminum dust. The above demonstrates how 20 kg (44 l) of aluminum dust is rendered inert by immersion in a liquid bath using a Wet Type recovery Vacuum Cleaner system. Be sure to visit our YouTube Channel for more videos and demonstrations: https://www.youtube.com/user/TigerVacInc

Assembly demonstration of CD/SS-IT 11l EX

Presentation and assembly of Tiger-Vac's interceptor unit CD/SS-IT 114L EX. This legally certified, high-pressure explosion proof vacuum cleaner system meets NFPA standards. For Wet typedust recovery, it recovers and neutralizes conductive dusts into a liquid immersion bath. Its coalescing filter element is contained in a see-through Lexan housing, to facilitate maintenance and operation.  

You are here