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Non-Desiccant Breathers

Des-Case Non-Desiccant breathers prevent contamination ingress in low humidity environments or in applications where water-based fluids are in use (e.g. water glycol hydraulic fluid). They help to prevent contamination by preventing free water as well as particles down to 1 micron from getting into the reservoir.

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Model Specs

Model Unit Height (in / mm) Unit Diameter (in / mm) Connection Size Max. Flow Rate (cfm) Max. Flow Rate (lpm) Filter Efficiency Operating Temp. Range (°F) Operating Temp. Range (°C)
DC-ND-2 1.4 / 34 1.8 / 46 3/8″ 0.67 @ 1 psid 19 0.3µ absolute (β₀.₃≥1000) -40° to 300° -40° to 149°
DC-ND-35 5 / 127 5 / 127 1″ Female (FNPT) 40 @ 1 psid 1132 0.3µ absolute (β₀.₃≥1000) -40° to 300° -40° to 149°

Model Sizing

Model Suction/Return Rate at 1 psid (gpm/lpm) Gearbox/Storage Tank Max. Volume (gal/L) Hydraulic Reservoir Max. Volume (gal/L)
DC-ND-2 5 / 19 15  / 57  15  / 57 
DC-ND-35 300 / 1,132 Sizing should be made per flow rate Sizing should be made per flow rate

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.

Did You Know...

Adapters

Part Number Description
DC-SB-VI 1″ NPT Vacuum Indicator Adapter (DC-ND-35)”

Features

Non-Desiccant2 Breather CutawayBy the Numbers

1. Rugged Exterior
Durable, shock absorbing housing.

2. Threaded Mounting
Easily replaces standard filler/breather cap with adapter/reducer options

3. Hydrophobic Filter Element
Particulate filter element repels water and protects against dirt

By the Numbers

Non-Desiccant35 Breather Cutaway

1–Pleated Element
Pleated filter element protects against particulate contamination

2–Hydrophobic Filter Element
Particluate filter element repels water and protects against dirt

3–Oil Coalescing
ePTFE coating allows oil mist to coalesce

4–Threaded Mounting
Easily replaces standard filler/breather cap with adapter/reducer options

5–Rugged Exterior
Durable, shock-absorbing housing

Applications

  • Low Humidity
  • Oil Misting
  • Arid Environments
  • High Dust
  • Water-Based Fluids
  • Oil Sight Glasses (DC-ND-2)
  • Small Gearboxes (DC-ND-2)

Breather Sizing Wizard

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