Signs You Need Make-Up Air


The lack of make-up air in a building can cause serious problems. Many times the problems are not even recognized and show themselves in ways that most people do not think about. A properly designed and installed ventilation system provides environmental control by avoiding negative pressure. Uncontrolled infiltration of air through window sashes, doors and

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Duall Division

Fluid Engineering is a proud representative of the Duall Division® of the Met-Pro Corporation and its line of corrosion resistant air and water quality control systems for industrial applications.

 Duall has its headquarters in Owosso, Michigan and is a division of Met-Pro Corporation. The company is a top manufacturer of water and air quality control systems for the treatment of toxic gas, corrosive fumes, and odors in municipal and industrial applications.

Its major products include Hexmaster® HepaHex dry scrubbers, MistMiserTMMist-X® and OilmasterTM mist eliminators, emergency gas and fume wet scrubbers, BetaNox® wet scrubbersHydrolanceTM wet dust collectors and particulate control systems, odor control wet scrubbersaeration towers, degasifiers, and DUALLastTM exhaust fans and FRP corrosion resistant ducting.

The primary industrial customers served by Duall include chemical processors, metal finishers, semiconductor facilities, pharmaceutical manufacturers, and battery manufacturers. For municipal requirements, Duall delivers degasification systems for treating polluted groundwater and odor control scrubbers for the elimination of sewage plant odors.

You can count on us for the customer service, reliable technologies, and overall expertise to help you achieve your goals with a wide range of unique air pollution handling and control requirements.

The major markets we serve and the primary products we deliver are listed below:

Major Markets

  • Metal finishing
  • Wastewater treatment
  • Food processing
  • Chemical
  • Printed circuit fabrication
  • Semiconductor fabrication
  • Battery manufacturing
  • Groundwater remediation

Primary Products

  • Odor control systems
  • Fume scrubbers
  • Emergency gas scrubbers
  • Aerators & degasifiers
  • Stripping towers
  • Exhaust fans
  • Plating & process tanks
  • Corrosion resistant ventilation systems
  • Dust & particulate control systems
  • Mist elimination equipment
  • NOx control systems
  • Custom designed air pollution abatement systems