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WSO M / WSO MM

The WSO M and MM mist collectors from Donaldson® Torit® are effective and efficient mist filtration systems, providing a more productive work environment by reducing coolant and machining oil mists in a machine-mountable package. 

The WSO M and MM provide high performance technology and easy, predictable maintenance. Both the WSO M and MM can be modified with a simple filter change, leading to leaner operation, cost savings and cleaner plant air.

 WSO M Mist Collector Filter Changeout

These mist collectors provide three filter solutions for water-soluble coolant, straight oil, and—the most challenging—oily smoke:

  1. A pre-filter stage,
  2. A primary filter stage, and 
  3. An optional final filter stage to provide even more fine mist filtration.

Two types of media are available for the WSO M and MM:

  • Revolutionary Synteq XP™ Media Technology, engineered for superior draining, resulting in lower pressure drop and longer filter life
  • Proprietary Dryflo® Filter Media Technology - (Available in the MM model only)

WSO M:

  • 3 in 1 solutions for mist applications
  • Advanced Synteq XP™ high efficiency media
  • Cross-flow design for better drainage
  • Easy to change cartridge filters
  • Energy savings
  • Continuous-duty design
  • Lower life cycle costs
  • Quiet operation
  • Configurations for machine mounting and floor stands

WSO MM:

  • 4 solutions for mist application
  • Economical proprietary Dryflo® filter media
  • Advanced Synteq XP™ high efficiency media
  • Cross-flow design for better drainage
  • Easy to change cartridge filters
  • Energy savings
  • Continuous-duty design
  • Lower life cycle costs
  • Configurations for machine mounting and floor stands

Q. What Are the Advantages of Synteq XP Media?

A. Proprietary Synteq XP Media is engineered with a blend of small and large fibers with a resin-free bonding system. The result is superior performance and longer filter life in the most challenging applications.

Q. What Size Are Mist Droplets/Particles?

A. Mist can generally be defined as a liquid droplet 20 microns in diameter or smaller. Oil-based fluids typically produce mist droplets that range from 0.5 microns to 10 microns. A smoke droplet is typically smaller, from 0.07 microns to 1 micron, and is a solid or liquid aerosol.


Q. What Determines the Performance of a Mist Collector?

A. A mist collector can be characterized by pressure drop, efficiency, and flow rate. Pressure drops affects the energy required to pull the airflow through the system. The efficiency of the system determines how clean the air will be as it leaves the collector and flow rate determines how much air will be cleaned.