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  • Dew points to -40°F
  • Inside-to-outside permeation
  • Helically wound bundles
  • Internal and external epoxy powder coat
  • Select models feature a digital purge control
  • No oxygen loss due to membrane design


The FS-Curtis MD Series of modular air dryers is designed with small, tubular fibers to let fast gases such as water vapor permeate through the tube wall and dissipate into the ambient. The membrane fiber technology features multiple strands to form a continuous microscopic sieve that targets and removes gases. Each helically wrapped layer alternates direction to ensure consistent cross sectional density and large flow paths.

Pressure dew points range from 50 to -40°F. The modular connections reduce leak points and aid in the installation process. The inside-to-outside permeation allows for greater unit efficiency. The dryers are internally and externally coated with epoxy powder for protection and additional durability. Select models contain a digital purge control feature to help save energy.