Explosion Proof Exhaust Fans

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Explosion Proof Exhaust Fans

The exhaust fans on this page are sturdily constructed, direct drive and belt drive axial and centrifugal wall and roof exhaust fans. Applications in the pharmaceutical, chemical, agricultural and paint industries may have explosive or combustible fumes and or dust that have the potential to ignite or explode if they come in contact with a spark or high temperatures. The risk of sparks generated from a fan can be minimized through the use of Non-ferrous metals such as aluminum or Monel propellers and explosion proof motors. 

The different levels of protection are defined by AMCA (Air Movement and Control Association).

AMCA "A" Spark Resistant Construction. Highest degree of spark resistance. Airstream parts are constructed out of non-ferrous materials. Typically, aluminum is the non-ferrous material used. 

AMCA "B" Spark Resistant Construction: Less protection than AMC "A" construction, AMCA "B" construction consists of a non-ferrous impeller and non-ferrous rubbing plate around the hole through which the shaft passes. Like AMCA "A" construction, aluminum is usually the non-ferrous material of choice but can be substituted with alternative material such as Monel®, Inconel® and Haselloy®.                                                                                                                           

AMCA "C" Spark Resistant Construction: Lowest degree of spark resistance. Utilizes only a non-ferrous rubbing plate that is typically constructed of aluminum but can be constructed out of alternative metals such as those listed in AMCA "B"

Explosion Proof Motor Classifications are as Follows:

CLASS I, GROUP C Atmospheres containing ethyl ether, ethylene, gases or vapors of equivalent hazard.
CLASS I, GROUP D Atmospheres such as acetone, ammonia, benzene, butane, cyclopropane, ethanol, gasoline, hexane, methane, natural gas, naphtha, propane, or gasses or vapors of equivalent hazard.
CLASS II GROUP F Atmospheres containing carbonaceous dust, including carbon black, charcoal, coal, or coke dusts that have more than 8% total entrapped volatiles, or dusts that have been sensitized by other materials so that they present an explosion hazard.
CLASS II GROUP G Atmospheres containing combustible dusts not included in group E or F, including flour, grain, wood, plastic and chemicals.     

Some of the uses for the explosion proof exhaust fans shown on this page are: Explosion Proof Paint Booth Exhaust Fans, Explosion Proof Spray Booths, Hazardous Location Exhaust Fans, Spark Proof Exhaust Fans, Intrinsically Safe Exhaust Fans.  The fans show on this page are typically used for general ventilation of factories, garages, paint booths, warehouses and other industrial, commercial & agricultural building applications.

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