Des-Case Rebuildable Steel Desiccant Breathers

Desiccant Breather DC-RS-150

Desiccant Breather DC-RS-150 breathers were designed specifically for applications, such as bulk storage tanks or large circulating lube oil systems, where there are very high temperatures, extremely polluted air, or a corrosive environment. They are ruggedly designed, with housings of powder-coated carbon steel or stainless steel. The hygroscopic agent (desiccant) is enclosed in a bag of polypropylene filter material. This desiccant bag filter is easily installed when it is time to replace or recharge the unit.

The 1-micron pleated filter has a large surface area, resulting in long service life. Like the bag filter, it is easily replaced without removing the breather from service. Rebuildable Steel breathers accommodate large air flow rates with minimal pressure drops.

  • 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


As air is drawn into equipment through the breather, the pleated filter element removes solid particulate while the desiccant extracts moisture. While in service or during shutdown, the desiccant beads attract moisture from inside the equipment reservoir, actively drying the equipment.

Desiccant Breather DC-RS-150

SEEING PINK? The sight glass on the RS unit gives indication to the saturation of the desiccant inside the bags. When the blue desiccant turns pink, it means it has done its job and is saturated with moisture, keeping it out of your lubricants. It’s time to order the rebuild kits.

Product Specs

Unit Height (in / mm)
36.75 / 933
Unit Diameter (in / mm)
23.5 / 596.9
Connection Size
Amount of Silica Gel (lbs / kg)
150 / 68.04
Max. Flow Rate (cfm)
250 @ 0.5 psid
Max. Flow Rate (lpm)
Filter Efficiency
1µ absolute (β1≥1000)
Operating Temp. Range (°F)
-20° to 220°
Operating Temp. Range (°C)
-29° to 104°

Sizing Desiccant Breather DC-RS-150

Max. Airflow at 1 psid
7079 lpm
Gearbox/Storage Tank
189271 L
Hydraulic Reservoir


  • Bulk Storage
  • Diesel Tank Storage
  • Harsh Environments
  • High Flow Applications
  • Large Hydraulic Reservoirs


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