Des-Case Rebuildable Steel (RS) breathers were designed specifically for applications, such as bulk storage tanks or large circulating lube oil systems, where there are very high temperatures, extremely polluted air, or a corrosive environment. They are ruggedly designed, with housings of powder-coated carbon steel or stainless steel. The hygroscopic agent (desiccant) is enclosed in a bag of polypropylene filter material. This desiccant bag filter is easily installed when it is time to replace or recharge the unit. The 1-micron pleated filter has a large surface area, resulting in long service life. Like the bag filter, it is easily replaced without removing the breather from service. Rebuildable Steel breathers accommodate large air flow rates with minimal pressure drops.
Specs
| PRODUCT SPECS |
DC-RS-3 |
DC-RS-5 |
DC-RS-9 |
DC-RS-15 |
DC-RS-25 |
DC-RS-50 |
DC-RS-75 |
DC-RS-100 |
DC-RS-150 |
DC-RS-200 |
| Unit Height (in / mm) |
11.5 / 292 |
13.75 / 349 |
18.25 / 464 |
19.25 / 489 |
22.5 / 571 |
31.25 / 794 |
39.75 / 1010 |
31 / 787 |
36.75 / 933 |
42.75 / 1086 |
| Unit Diameter (in / mm) |
10.13 / 257.2 |
10.13 / 257.2 |
10.13 / 257.2 |
15.5 / 393.7 |
15.5 / 393.7 |
15.5 / 393.7 |
15.5 / 393.7 |
23.5 / 596.9 |
23.5 / 596.9 |
23.5 / 596.9 |
| Connection Size |
2" |
2" |
2" |
3" |
3" |
3" |
3" |
4" |
4" |
4" |
| Amount of Silica Gel (lbs / kg) |
3 / 1.36 |
5 / 2.27 |
9 / 4.08 |
15 / 6.80 |
25 / 11.34 |
50 / 22.68 |
75 / 34.02 |
100 / 45.36 |
150 / 68.04 |
200 / 90.72 |
| Max. Flow Rate (cfm) |
85 @ 0.5 psid |
85 @ 0.5 psid |
80 @ 0.5 psid |
205 @ 0.5 psid |
140 @ 0.5 psid |
115 @ 0.5 psid |
80 @ 0.5 psid |
270 @ 0.5 psid |
250 @ 0.5 psid |
240 @ 0.5 psid |
| Max. Flow Rate (lpm) |
2407 |
2407 |
2265 |
5805 |
3964 |
3256 |
2265 |
7645 |
7079 |
6796 |
| Filter Efficiency |
1µ absolute (β₁≥1000) |
1µ absolute (β₁≥1000) |
1µ absolute (β₁≥1000) |
1µ absolute (β₁≥1000) |
1µ absolute (β₁≥1000) |
1µ absolute (β₁≥1000) |
1µ absolute (β₁≥1000) |
1µ absolute (β₁≥1000) |
1µ absolute (β₁≥1000) |
1µ absolute (β₁≥1000) |
| Operating Temp. Range (°F) |
-20° to 220° |
-20° to 220° |
-20° to 220° |
-20° to 220° |
-20° to 220° |
-20° to 220° |
-20° to 220° |
-20° to 220° |
-20° to 220° |
-20° to 220° |
| Operating Temp. Range (°C) |
-29° to 104° |
-29° to 104° |
-29° to 104° |
-29° to 104° |
-29° to 104° |
-29° to 104° |
-29° to 104° |
-29° to 104° |
-29° to 104° |
-29° to 104° |
Sizing & Application
| MODEL |
MAX. AIRFLOW AT 1 PSID |
RECOMMENDED MAX. VOLUME |
| STORAGE TANK |
HYDRAULIC RESERVOIR |
| DC-RS-3 |
85 cfm / 2407 lpm |
800 gal / 3028 L |
400 gal / 8 L |
| DC-RS-5 |
85 cfm / 2407 lpm |
1300 gal / 4921 L |
600 gal / 19 L |
| DC-RS-9 |
80 cfm / 2265 lpm |
2400 gal / 9085 L |
1200 gal / 227 L |
| DC-RS-15 |
205 cfm / 5805 lpm |
4000 gal / 15142 L |
1800 gal / 379 L |
| DC-RS-25 |
140 cfm / 3964 lpm |
7000 gal / 26498 L |
Contact Des-Case |
| DC-RS-50 |
115 cfm / 3256 lpm |
14000 gal / 52996 L |
Contact Des-Case |
| DC-RS-75 |
80 cfm / 2265 lpm |
21000 gal / 79494 L |
Contact Des-Case |
| DC-RS-100 |
270 cfm / 7645 lpm |
30000 gal / 113562 L |
Contact Des-Case |
| DC-RS-150 |
250 cfm / 7079 lpm |
50000 gal / 189271 L |
Contact Des-Case |
| DC-RS-200 |
240 cfm / 6796 lpm |
75000 gal / 283906 L |
Contact Des-Case |
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
- Bulk Storage
- Diesel Tank Storage
- Harsh Environments
- High Flow Applications
- Large Hydraulic Reservoirs
Chemical Compatibility
BELOW ARE SOME REQUESTED CUSTOMIZED RS UNITS.
Please note: Each one is specific to a particular application and customer requests. Please use as a guideline only.
| RS APPLICATION |
RECOMMENDATION |
| Gasoline |
Carbon Steel RS Unit with 100% Molecular Sieve, standard components (gasoline can turn silica gel black, so some customers prefer the molecular sieve instead) |
| Ethanol |
Carbon Steel RS Unit with Viton, Plastisol |
| Diesel/Biodiesel |
Carbon Steel RS Unit with all standard components |
| Sulfuric Acid |
304 Stainless Steel Unit with Viton, Plastisol, No Foam (can combine w/Activated Carbon if caustic fumes are an issue-combos in 25% increments) |
| Fyrquel (Phosphate Ester) |
304 Stainless Steel Unit with EPDM, Plastisol, No Foam |
| Skydrol (Phosphate Ester) |
304 Stainless Steel Unit with EPDM, Plastisol, No Foam |
| Aqeous Urea |
304 Stainless Steel Unit with EPDM gaskets/seals, No Desiccant/Desiccant Bag, Standard Filter (Note: Customer requested no desiccant bags, other customers may want bag) |
| Hydrogen Peroxide (70%) |
304/316 Stainless Steel Unit with Viton, Plastisol, No Foam |
How It Works
As air is drawn into equipment through the breather, the pleated filter element removes solid particulate while the desiccant extracts moisture. While in service or during shutdown, the desiccant beads attract moisture from inside the equipment reservoir, actively drying the equipment.
Adapters
| STEEL ADAPTERS |
| DESCRIPTION |
PART NUMBER |
| 1" NPT |
DC-13-4C |
| 2" NPT (DC-RS-3, DC-RS-5, DC-RS-9) |
DC-13-6C |
| 3" NPT (DC-RS-15, DC-RS-25, DC-RS-50, DC-RS-75) |
DC-13-10C |
| 4" NPT (DC-RS-15, DC-RS-100, DC-RS-150, DC-RS-200) |
DC-13-40C |
| STAINLESS STEEL ADAPTERS |
| DESCRIPTION |
PART NUMBER |
| 1" NPT Stainless Steel |
DC-13-4C-SS |
| 2" NPT Stainless Steel (DC-RS-3, DC-RS-5, DC-RS-9) |
DC-13-6C-SS |
| 3" NPT Stainless Steel (DC-RS-15, DC-RS-25, DC-RS-50, DC-RS-75) |
DC-13-10C-SS |
| 4" NPT Stainless Steel (DC-RS-15, DC-RS-100, DC-RS-150, DC-RS-200) |
DC-13-40C-SS |
Rebuild Kits
| REBUILDABLE STEEL REBUILD KITS |
| |
DESCRIPTION |
PART NUMBER |
| Rebuild kit includes desiccant bags, microglass filter, sight glass, gaskets, and foam |
Rebuild Kit for DC-RS-3 |
DC-RS-3-RK |
| Rebuild Kit for DC-RS-5 |
DC-RS-5-RK |
| Rebuild Kit for DC-RS-9 |
DC-RS-9-RK |
| Rebuild Kit for DC-RS-15 |
DC-RS-15-RK |
| Rebuild Kit for DC-RS-25 |
DC-RS-25-RK |
| Rebuild Kit for DC-RS-50 |
DC-RS-50-RK |
| Rebuild Kit for DC-RS-75 |
DC-RS-75-RK |
| Rebuild Kit for DC-RS-100 |
DC-RS-100-RK |
| Rebuild Kit for DC-RS-150 |
DC-RS-150-RK |
| Rebuild Kit for DC-RS-200 |
DC-RS-200-RK |
Benefits
- 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
