Seventy five percent of hydraulic system failures are caused by contaminated fluid.In any reservoir containing a fluid, air is breathed in and out as operating temperatures change, or as a tank is filled and emptied. The problem with a simple breather cap is that it allows abrasive contaminants and water to enter the tank.
The Des-Case breather is a unique, patented air filter and water vapor removal system. The units are inexpensive and simple to install. They eliminate the problems that result from contaminated air.
The steel breathers were designed specifically for applications where there are very high temperatures, extremely dirty air, or a corrosive environment. They are ruggedly designed, with housings of epoxy coated carbon steel or stainless. The hygroscopic agent (desiccant) is enclosed in a bag of polyester filter material. This desiccant bag filter is easily installed when it is time to replace or recharge the unit.
| Model # | Capacity |
|---|---|
| DC/CS-4 | 0.4 L |
| DC/CS-6 | 1.1 L |
| DC/CS-10 | 3.1 L |
| DC/CS-20 | 6.2 L |
| DC/CS-30 | 9.3 L |
| DC/CS-40 | 16 L |
The 1-micron pleated filter has a very large surface area, resulting in long service life. Like the bag filter, it is easily replaced without removing the breather from service.
The steel breathers accommodate large air flow rates with minimal pressure drops.

| Model # | A | B | C | D | E | F | Weight |
|---|---|---|---|---|---|---|---|
| DC/CS-4 | 12″ / 30.48 cm | 10″ / 25.4 cm | 4.5″ /11.43 cm | 2″ / 5.08 cm | 7.2″ / 18.288 cm | 1″ / 2.54 cm | 12 lbs. / 5.44 kg |
| DC/CS-6 | 14″ /35.56 cm | 12″ / 30.48 cm | 4.5″ / 11.43 cm | 2″ / 5.08 cm | 9.1″ / 23.114 cm | 2″ / 5.08 cm | 17 lbs. / 7.71 kg |
| DC/CS-10 | 20″ / 50.8 cm | 18″ / 45.72 cm | 9″ / 22.86 cm | 2″ / 5.08 cm | 12.6″ / 32.004 cm | 3″ / 7.62 cm | 33 lbs. / 14.97 kg |
| DC/CS-20 | 30″ / 76.2 cm | 28″ / 71.12 cm | 9″ / 22.86 cm | 2″ / 5.08 cm | 12.6″ / 32.004 cm | 3″ / 7.62 cm | 60 lbs. / 27.22 kg |
| DC/CS-30 | 38″ / 96.5 cm | 35″ / 88.9 cm | 9″ / 22.86 cm | 2″ / 5.08 cm | 12.6″ / 32.004 cm | 3″ / 7.62 cm | 81 lbs. / 36.74 kg |
Since all Des-Case Steel Breathers are designed with standard NPT pipe threads for mounting, these units can be installed in nearly any application with reducers, adaptors, etc., available at any local plumbing or hardware supply.
| Model # | Description |
|---|---|
| DC-4D | Desiccant Bag Filter |
| DC-6D | Desiccant Bag Filter |
| DC-10D | Desiccant Bag Filter (2 bags needed for DC/CS 20) (3 bags needed for DC/CS 30) |
| DC-4F/1 | Pleated Filter Element |
| DC-6F/1 | Pleated Filter Element |
| DC-10F/1 | Pleated Filter Element (1 element for DC/CS 10,20,30) |
| DC-12-4C | Threaded Adaptor |
| DC-12-6C | Threaded Adaptor |
| DC-12-10C | Threaded Adaptor (1 adapter for DC/CS 10,20,30) |