Standard Series Desiccant Breathers

Des-Case Standard breathers provide 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 defense against humidity for your applications.


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Product Specs




Unit Height (mm) 99.06 134.9 155.6 206.4 257.2
Unit Diameter (mm) 64.1 64.1 101.6 101.6 101.6
Connection Size 3/8" Multi-Fit (NPT, BSPP, BSPT) 3/8" Multi-Fit (NPT, BSPP, BSPT) 1" Multi-Fit (NPT, BSPT, NPSM) 1" Multi-Fit (NPT, BSPT, NPSM) 1" Multi-Fit (NPT, BSPT, NPSM)
Amount of Silica Gel (kg) 0.058 0.127 0.30 0.56 0.84
Adsorption Capacity (ml) 23.3 49.7 118.2 220.3 333
Max. Flow Rate (lpm) 128.84 @ 70 mbar 117.8 @ 70 mbar 453 @ 70 mbar 454 @ 70 mbar 455 @ 70 mbar
Filter Efficiency 3µ absolute (β₃≥200) 3µ absolute (β₃≥200) 3µ absolute (β₃≥200) 3µ absolute (β₃≥200) 3µ absolute (β₃≥200)
Operating Temp. Range (°C) -29° to 93° -29° to 93° -29° to 93° -29° to 93° -29° to 93°
Customized desiccant breathers offer several alternative or secondary agent media options that can be mixed to meet specific environmental and chemical needs.




ORANGE SILICA GEL - Silica gel is the most efficient and economic moisture adsorbent for general applications. Des-Case offers two types of indicating silica gel, blue-to-pink or orange-to-white. The difference between the two is the chemical used to indicate the color-change. Blue-to-pink uses cobalt chloride and orange-to-white uses ferric ammonium sulfate.


ACTIVATED CARBON - Activated carbon is an ideal adsorbent in applications requiring fume mitigation or air purification.


MOLECULAR SIEVE - Molecular sieve has high efficiency at low levels of humidity. It is best for drying highly polar alcohols, unsaturated hydrocarbons, and static dehydration of gas.


ACTIVATED ALUMINA - Activated alumina is most effective in removing organic acids, especially those that are larger in size.


LAYERED (BLUE SILICA GEL & MOLECULAR SIEVE) - Mixing media such as silica gel and molecular sieve are ideal for customers needing to adsorb both moisture and fumes simultaneously.


Contact Des-Case at 615.672.8800 or at [email protected] for help choosing the correct media for your application.

Model Max. Airflow at 70 MBAR Recommended Max. Volume
Gearbox / Storage Tank Hydraulic Reservoir
DCE-BB 129 lpm 57 L 8 L 
DCE-1  118 lpm 132 L  19 L 
DCE-2  453 lpm  757 L  227 L 
DCE-3  453 lpm  1325 L 379 L 
DCE-4 453 lpm 1893 L 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.


  • Totes
  • Transformers
  • Storage Tanks
  • Hydraulics

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.

Description Part Number
1" FNPT x 1" Slip Fit Adapter DCE-10-S
1" Threaded Adapter DCE-10
1" Male Threaded x 1" Female Threaded Adapter DCE-10-T
Bell Reducer 1" to 3/4"-Slip Fit DCE-17
1"-3/4" Female to Male Threaded Adapter DCE-17-T
1"-1/4" Brass, Threaded Reducer/Adapter DCE-18
Threaded Flange Adapter DCE-12-T
Threaded Flange Adapter with Gasket DCE-12-TG
Bayonet Adapter DCE-15-T
3/4" NPT Vent Valve Adapter for Standard and VentGuard Breathers DCE-SDVA-12M
1" NPT Vent Valve Adapter for Standard and VentGuard Breathers DCE-SDVA-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
Gearbox 2
Hydraulic Pump: 0-113 lpm @ 70 mbar 2
Hydraulic Pump: 4-8 cfm @ 1 PSID / 113-226 lpm @ 70 mbar 4
Hydraulic Pump: 226-339 lpm @ 70 mbar 6
Hydraulic Pump: 339-452 lpm @ 70 mbar 8
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