Diesel Fuel Polish­ing

DC-1 Desiccant Vent Breather - 3-Micron - Disposable (AA0781)

DC-1 Desiccant Breathers Remove Water, Particulates, Dirt & Organic Microbes from air being drawn into your fuel tank



The Des-Case Standard Disposable Desiccant Vent Breather will absorb moisture from the air being drawn into the fuel tank as the fuel level drops.  It will also filter the air of particulates, dirt, and organic components, including bacterial and fungal growth, present in the air.  Moisture and microbial contamination that enters through the vent as air is pulled into the tank is the primary source of water accumulation in fuel tanks and the principal cause of “algae” growth in fuel tanks.

Just like you would not consider operating your diesel equipment without an air intake filter, you should not think twice about the importance of assuring clean, dry air is being pulled into your fuel tank.  This is especially critical in any marine, farming, construction or mining operation located in high humidity regions.

DC-1 Disposable Desiccant Breathers have an Integrated Standpipe, silica gel and layered filter media, and filters particulates larger than 3-micron.

The DC-1 will fit 3/8″ vent pipes and comes with Multi-Fit Thread Adapters (NPT, BSPP, BSPT)

  • Pounds of Desiccant: 0.28
  • Storage Tank Volume (Max in Gallons): 35
  • Hydraulic Reservoir (Max Gallons): 5
  • Gear Box (Max Gallons): 35
  • Gallons per Minute: 31.2
  • Maximum Air Flow (in CFM): 4.16
  • PSID: At 1 PSID
  • Port Size: 3/8 inch
  • Dimensions: 2.5″ x 5.3″

Ideal For: Intermittent Operations, Transformers, Small Totes, & Pumps

Additional information

Weight 5 lbs


  • Model: DC-1
  • Unit Height: 5.31″ / 134.9 mm
  • Unit Diameter: 2.52″ / 64.1 mm
  • Connection Size: 3/8″ Multi-Fit (NPT, BSPP, BSPT)
  • Amount of Silica Gel: .28 lbs / 0.127 kg
  • Max. Flow Rate: 4.16 @ 1 psid cfm
  • Filter Efficiency: 3µ absolute (β₃≥200)


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