Disposable Desiccant Breathers


Industry spends billions of dollars annually treating the negative effects of oil contamination. Des-Case attacks the cause as opposed to treating the problem of contamination.

Designed and developed by filtration engineers, the Des-Case hygroscopic breather is a unique, patented air filter and water vapor removal system. It will virtually eliminate moisture and particulate contamination in industrial equipment reservoirs such as hydraulic tanks and gear boxes.

Change to Des-Case For Maximum Performance

Des-Case hygroscopic breather elements are state-of-the-art in design and function, and are industry’s best choice for assuring maximum machine performance. Des-Case offers these cost-saving benefits:

Resilient Construction

Moisture and particulate accumulation are major factors of oil contamination in industrial equipment. Neglected, these detriments restrict equipment efficiency, causing machine downtime and significant expense in replacement oil, parts and repair labor.
Des-Case breathers incorporate a proven, field-tested design. They prevent water and contaminants from entering fluid reservoirs as differential pressures occur through thermal expansion and contraction of the fluid, or during the filling or emptying process.
Des-Case breathers utilize the entire area of the patented polyester filter media to remove solid particulate material as small as 3-microns. Accompanying water vapor is then removed by the desiccant agent. A final filter ensures that only clean dry air enters the system.

Unique Filtration Process

Every Des-Case desiccant breather is manufactured in a durable, shock-absorbing clear plastic casing with resilient qualities to withstand the customary abuse associated with heavy manufacturing equipment. The units are disposable, and are manufactured entirely of environmentally safe components.
Des-Case standard desiccant breathers are manufactured in three sizes, DC-2, DC-3, and DC-4 to accommodate different mounting space requirements. All three models are rated for 16 cfm of air in and out of the tank or reservoir (the equivalent of 120 gpm fluid level change in the tank).

Models, Accessories & Installation Methods

Des-Case standard disposable breathers retain particulate as small as 0.5-micron (73.5% efficiency) or 3-micron absolute, are rated for 16 cfm and feature a 1″ threaded standpipe.

Disposable Desiccant Breathers
Model # Diameter Height Water Adsorption
DC-2 4″ / 10.16 cm 6.125″ / 15.56 cm 0.13 L
DC-3 4″ / 10.16 cm 8.125″ / 20.64 cm 0.23 L
DC-4 4″ / 10.16 cm 10.125″ / 25.72 cm 0.35 L
Optional Accessories
Model # Description
DC-10 Threaded Adaptors
DC-11 Clamps
DC-12 Field Adaptors
DC-12T New 1″ NPT Female Threaded Field Adaptor
DC-15 Flange Adaptors
DC-15T New 1″ NPT Female Threaded Brass Flange Adaptor
DC-16 Flexhose
DC-17T New 1″ NPT Female -3/4″ NPT Male Adaptor

Des-Case desiccant breathers are designed for installation on most equipment regardless of location. For installation in difficult areas, Des-Case offers accessories enabling breather placement to be several feet away from an oil reservoir or gearbox.