Extreme Duty Desiccant Breathers

The Des-Case Extreme Duty (XD) desiccant breather has excellent vibration and impact resistance, can withstand broad temperature ranges, has expansive chemical compatibility, and features quality check valve technology while still accommodating higher air flow. The Extreme Duty breather also has the best filter efficiency of any Des-Case breather―down to 0.3µ absolute (β0.3≥200).


  • Off-Road & Mobile Equipment
  • Steel
  • General Manufacturing
  • Food & Beverage
  • Mining


  • Mobile & Off-Road Equipment
  • Hydraulics
  • Nautical Applications
  • Truck Differentials


  • Harsh Environments
  • High Vibration / Impact
  • Washdowns


Extreme Duty Breather Cut Thru

Secondary Filter Element

Second particulate filter element protects against migration of desiccant.

Visual Indicator

Windows on two sides of breather allow for easy monitoring of desiccant.

Water Vapour Adsorbent

Colour-indicating silica gel adsorbs water from incoming air. Replace when colour changes from blue to pink.

Rugged Housing

Integrated Standpipe

Resilient construction provides durability and allows oil mist to coalesce and drain back into the reservoir.

Foam Pad

Foam filter captures any oil mist and disperses incoming air evenly over filtration and drying areas.

Quad Check-Valves

Check-valves provide system pressurization, protecting system integrity and extending product life.

Filter Element

ePTFE filter removes airborne contamination to 0.3-micron absolute. Stops free water.


As wet, contaminated air is drawn through the unit, multiple 0.3 micron filter elements remove solid particulate while the colour-indicating silica gel extracts moisture. When air is expelled from the container, the top foam pad prevents oil mist from contacting silica gel or entering the atmosphere.

Seeing pink? A pink breather means it has done its job keeping moisture out of your lubricants. Time to replace the breather with a new one.

Time to replace your standard breather


Product Specs
Unit Height (in / mm) 6.51 / 165.4
Unit Diameter (in / mm) 5.1 / 129.5
Connection Size 1 1/2" x 16 UN female thread
Amount of Silica Gel (lbs / kg) 1.75 / 0.79
Adsorption Capacity (fl oz / ml) 10.65 / 315
Max. Flow Rate (cfm) 16 @ 1 psid
Max. Flow Rate (lpm) 456
Filter Efficiency 0.3µ absolute (ß3≥200)
Operating Temp. Range (°F) -40° to 300°
Operating Temp. Range (°C) -40° to 149°

Model Max. Airflow at 1 psid  Recommended Max. Volume
Gearbox / Storage Tank Hydraulic Reservoir
DC-XD-6 16 cfm / 456 lpm 500 gal / 1893 L 200 gal / 757 L

Please Note: This is intended as a general guideline for sizing only; other considerations, such as: humidity level, frequency of air flow, ambient temperatures, and chemical compatibility are very important in sizing a breather properly. Larger applications and special circumstances typically require the most thorough analysis. Please contact Des-Case for assistance in sizing a breather.

Description Part Number
1" NPT Threaded Adapter for DC-XD-6 DC-DSA-10
3/4" NPT Threaded Adapter for DC-XD-6 DC-DSA-17
3/4" NPT Vent Valve Adapter for DC-XD-6 DC-XDVA-12M
1" NPT Vent Valve Adapter for DC-XD-6 DC-XDVA-16M
  • Removes moisture in the headspace of equipment
  • Eliminates rust-forming condensation
  • Prevents sludge deposits and water-contaminated oil
  • Prevents contamination ingress
  • Provides longer lubricant life
  • Reduces wear and tear on equipment, prolongs life