Des-Case Desiccant Breather DC-4

Standard Series Desiccant Breathers

Desiccant Breather DC-4

Des-Case Desiccant Breather DC-4 provides simple, yet dependable protection from moisture and particulate contamination in lubricants and equipment across multiple industries and applications. These versatile breathers are five times more effective than the leading non-desiccant breathers, providing optimal defence against humidity for your applications.


  • 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

The desiccant breather replaces the standard dust cap or OEM breather cap on equipment. As air is drawn into equipment through the breather, the layered filter elements remove particulate while the desiccant beads strip harmful moisture. While in service or during shut-down, the desiccant beads attract moisture from inside the equipment reservoir, actively drying the equipment.

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.

Product Specs

Unit Height (in / mm)
10.125 / 257.2
Unit Diameter (in / mm)
4 / 101.6
Connection Size
1″ Multi-Fit (NPT, BSPT, NPSM)
Amount of Silica Gel (lbs / kg)
1.88 / 0.84
Adsorption Capacity (fl oz / ml)
11.3 / 333
Max. Flow Rate (cfm)
16 @ 1 psid
Max. Flow Rate (lpm)
Filter Efficiency
3µ absolute (β₃≥200)
Operating Temp. Range (°F)
-20° to 200°
Operating Temp. Range (°C)
-29° to 93°

Sizing Desiccant Breather DC-4

Max. Airflow at 1 psid
453 lpm
Gearbox/Storage Tank
1893 L
Hydraulic Reservoir
757 L


  • Totes
  • Transformers
  • Storage Tanks
  • Hydraulics


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