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
DC-BB

DC-1

DC-2

DC-3

DC-4
Unit Height (in / mm) 3.90 / 99.06 5.31 / 134.9 6.125 / 155.6 8.125 / 206.4 10.125 / 257.2
Unit Diameter (in / mm) 2.52 / 64.1 2.52 / 64.1 4 / 101.6 4 / 101.6 4 / 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 (lbs / kg) 0.13 / .058 0.28 / .127 0.66 / 0.30 1.22 / 0.56 1.88 / 0.84
Adsorption Capacity (fl oz / ml) 0.79 / 23.3 1.68 / 49.7 4.00 / 118.2 7.45 / 220.3 11.3 / 333
Max. Flow Rate (cfm) 4.55 @ 1 psid 4.16 @ 1 psid 16 @ 1 psid 16 @ 1 psid 16 @ 1 psid
Max. Flow Rate (lpm) 128.84 117.8 453 453 453
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 (°F) -20° to 200° -20° to 200° -20° to 200° -20° to 200° -20° to 200°
Operating Temp. Range (°C) -29° to 93° -29° to 93° -29° to 93° -29° to 93° -29° to 93°
Model Max. Airflow at 1 psid  Recommended Max. Volume
Gearbox / Storage Tank Hydraulic Reservoir
DC-BB 4.55 cfm / 129 lpm 15 gal / 57 L 2 gal / 8 L 
DC-1  4.16 cfm /118 lpm 35 gal / 132 L  5 gal / 19 L 
DC-2  16 cfm / 453 lpm  200 gal / 757 L  60 gal / 227 L 
DC-3  16 cfm / 453 lpm  350 gal / 1325 L 100 gal / 379 L 
DC-4 16 cfm / 453 lpm 500 gal / 1893 L 200 gal / 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.

APPLICATIONS

  • 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.

pink-blue-breather.jpg

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 DC-10-S
1" Threaded Adapter DC-10
1" Male Threaded x 1" Female Threaded Adapter DC-10-T
Bell Reducer 1" to 3/4"-Slip Fit DC-17
1"-3/4" Female to Male Threaded Adapter DC-17-T
1"-1/4" Brass, Threaded Reducer/Adapter DC-18
Threaded Flange Adapter DC-12-T
Threaded Flange Adapter with Gasket DC-12-TG
Bayonet Adapter DC-15-T
3/4" NPT Vent Valve Adapter for Standard and VentGuard Breathers DC-SDVA-12M
1" NPT Vent Valve Adapter for Standard and VentGuard Breathers DC-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
  1. What is the application?

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