Standard Series Desiccant Breathers

Standard desiccant breathers provide simple, yet dependable protection from moisture and particulate contamination in lubricants and equipment across multiple industries and applications. These versatile desiccant breathers are five times more effective than the leading non-desiccant breathers, providing optimal defense against humidity for your applications.

INDUSTRIES

  • Oil & Gas
  • Storage
  • Manufacturing
  • Mining
  • Power Generation
  • Aviation

APPLICATIONS

  • Totes
  • Transformers
  • Storage Drums
  • Hydraulics

OPERATING ENVIRONMENTS

  • General Use
  • Lubricant Storage Rooms
  • Indoors
  • Cold Weather Environments

EXPLORE

As wet contaminated air is drawn through the desiccant breather unit, multiple 3-micron polyester filter elements remove solid particulate and the colour-indicating silica gel extracts moisture. When air is expelled from the container, the top foam pad prevents oil mist from contacting silica gel or entering the atmosphere.

Standard Breather Cut Thru

Secondary Filter Element

Second polyester filter element protects against migration of desiccant dust, providing maximum efficiency.

Foam Pad

Foam filter captures any oil mist and disperses incoming air evenly over filtration and drying areas.

Integrated Nylon Standpipe

The integrated standpipe provides excellent vibration resistance and dissipates impact throughout the unit, eliminating weak points. It also allows even airflow distribution throughout the unit, eliminating inaccurate readings of desiccant saturation.

Water Vapour Absorbent

Silica gel adsorbs water from incoming air and can hold up to 40% of its weight. Condition is indicated by change of colour from blue to light pink.

Resilient Polycarbonate Body

Shock-absorbing, clear casing provides reliable service and easy maintenance.

Filter Element

Polyester filter element removes airborne contamination to 3-micron absolute. Unique loops allow particles to release during system exhalation, helping to increase breather life.

Air Vents

Individual air intakes are opened based on flow requirements of the system. Plugs protect unit during shipping and storage.

Thread Mounting

Easily replaces standard filler/breather cap with multi-fit connection or one of several adapters.

HOW IT WORKS

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 desiccant breather means it has done its job keeping moisture out of your lubricants. Time to replace the breather with a new one.

Time to replace your standard breather

PRODUCT SPECIFICATIONS

Product Specs DC-BB
DC-BB
DC-1
DC-1
DC-2
DC-2
DC-3
DC-3
DC-4
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 (ß3≥200) 3µ absolute (ß3≥200) 3µ absolute (ß3≥200) 3µ absolute (ß3≥200) 3µ absolute (ß3≥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.

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