Rebuildable Steel Breathers

Seventy five percent of hydraulic system failures are caused by contaminated fluid.

In any reservoir containing a fluid, air is breathed in and out as operating temperatures change, or as a tank is filled and emptied. The problem with a simple breather vent is that it allows abrasive contaminants and water to enter the tank.
Sizing Chart
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The Des-Case rebuildable steel breather helps eliminate the problems that result from contaminated air.

Benefits of Des-Case Breathers

  • Elimination of water contamination of the oil or other fluids
  • Elimination of rust and corrosion inside the container
  • Increased oil and filter life
  • Reduced abrasive wear, down-time, and repair costs
  • Improved lubricant performance
  • Eliminates chemical reactions, or spoilage
  • More reliable equipment performance

Designed for Severe Operating Conditions

The steel breathers were designed specifically for applications where there are very high temperatures, extremely dirty air, or a corrosive environment. They are ruggedly designed, with housings of powder-coated carbon steel or stainless. The hygroscopic agent (desiccant) is enclosed in a bag of polyester filter material. This desiccant bag filter is easily installed when it is time to replace or recharge the unit.

Adsorption Capacity

Model # Capacity (L) Capacity (gal) Flow Rate Connection Size
DC-RS-3 0.54 L 0.14 gal 85 cfm 2"
DC-RS-5 0.90 L 0.24 gal 85 cfm 2"
DC-RS-9 1.62 L 0.43 gal 80 cfm 2"
DC-RS-15 1.62 L 0.43 gal 205 cfm 3"
DC-RS-25 4.5 L 1.19 gal 140 cfm 3"
DC-RS-50 9 L 2.38 gal 115 cfm 3"
DC-RS-75 13.5 L 3.57 gal 80 cfm 3"
DC-RS-100 18 L 4.75 gal 270 cfm 4"
DC-RS-150 27 L 7.13 gal 250 cfm 4"
DC-RS-200 36 L 9.51 gal 240 cfm 4"

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.
The steel breathers accommodate large air flow rates with minimal pressure drops.

Models, Accessories & Installation Methods

Steel Breather Installation

Model # Height (in.) Height (cm) Width (in.) Width (cm) Weight (lbs) Weight (kg)
DC-RS-3 11.5" 29.2 cm 10.13" 25.72 cm 16 lbs. 7.26 kg
DC-RS-5 13.75" 34.9 cm 10.13" 25.72 cm 20 lbs. 9.07 kg
DC-RS-9 18.25" 46.4 cm 10.13" 25.72 cm 27 lbs. 12.25 kg
DC-RS-15 19.25" 48.9 cm 15.5" 39.37 cm 49 lbs. 22.23 kg
DC-RS-25 22.5" 57.1 cm 15.5" 39.37 cm 64 lbs. 29.03 kg
DC-RS-50 31.25" 79.4 cm 15.5" 39.37 cm 100 lbs. 45.36 kg
DC-RS-75 39.75" 101 cm 15.5" 39.37 cm 144 lbs. 65.32 kg
DC-RS-100 31" 78.7 cm 23.5" 59.69 cm 190 lbs. 86.16 kg
DC-RS-150 36.75" 93.3 cm 23.5" 59.69 cm 253 lbs. 114.76 kg
DC-RS-200 42.75" 108.6 cm 23.5" 59.69 cm 315 lbs. 142.88 kg

Mounting Methods

Since all Des-Case rebuildable steel breathers are designed with standard NPT pipe threads for mounting, these units can be installed in nearly any application with reducers, adapters, etc.

For part codes containing X, substitute the appropriate RS model number. (Example: the part code for a sight glass cartridge for the DC-RS-150 would be DC-RS-150-SG1.)

Parts and Accessories
Model # Description
DC-13-6C Threaded Adapter for DC-RS-3, DC-RS-5, and DC-RS-9
DC-13-10C Threaded Adapter for DC-RS-15, DC-RS-25, DC-RS-50, and DC-RS-75
DC-13-40C Threaded Adapter for DC-RS-100, DC-RS-150, and DC-RS-200
DC-RS-X-RK Rebuildable Steel Breather Rebuild Kits
DC-RS-X-F1 Rebuildable Steel Breather Filter Elements
DC-RS-X-D1 Rebuildable Steel Breather Desiccant Bag Sets
DC-RS-X-SG1 Rebuildable Steel Breather Sight Glass Cartridges
DC-RS-X-P1 Rebuildable Steel Breather Oil Coalescing Foam Inserts
DC-RS-X-G1 Rebuildable Steel Breather Gasket Seals


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