Des-Case Rebuildable Steel Series Breather1.1

Rebuildable Steel Breathers

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.

Compare Models (10)

Breather Selector Tool

Specifications

Download Technical Specs

Model Specs

Model	Unit Height (in / mm)	Unit Diameter (in / mm)	Connection Size	Amount of Silica Gel (lbs / kg)	Max. Flow Rate (cfm)	Max. Flow Rate (lpm)	Filter Efficiency	Operating Temp. Range (°F)	Operating Temp. Range (°C)
DC-RS-3	11.50 / 292	10.13 / 257	2″	3 / 1.36	85 @ 0.5 psid	2407	1µ absolute (β₁≥1000)	-20° to 220°	-29° to 104°
DC-RS-5	13.75 / 349	10.13 / 257	2″	5 / 2.27	85 @ 0.5 psid	2407	1µ absolute (β₁≥1000)	-20° to 220°	-29° to 104°
DC-RS-9	18.25 / 454	10.13 / 257	2″	9 / 4.08	80 @ 0.5 psid	2265	1µ absolute (β₁≥1000)	-20° to 220°	-29° to 104°
DC-RS-15	19.25 / 489	15.5 / 394	3″	15 / 6.80	205 @ 0.5 psid	5805	1µ absolute (β₁≥1000)	-20° to 220°	-29° to 104°
DC-RS-25	22.5 / 571	15.5 / 394	3″	25 / 11.34	140 @ 0.5 psid	3964	1µ absolute (β₁≥1000)	-20° to 220°	-29° to 104°
DC-RS-50	31.25 / 794	15.5 / 394	3″	50 / 22.68	115 @ 0.5 psid	3256	1µ absolute (β₁≥1000)	-20° to 220°	-29° to 104°
DC-RS-75	39.75 / 1,010	15.5 / 394	3″	75 / 34.02	80 @ 0.5 psid	2265	1µ absolute (β₁≥1000)	-20° to 220°	-29° to 104°
DC-RS-100	31 / 787	23.5 / 597	4″	100 / 45.36	270 @ 0.5 psid	7645	1µ absolute (β₁≥1000)	-20° to 220°	-29° to 104°
DC-RS-150	36.75 / 933	23.5 / 597	4″	150 / 68.04	250 @ 0.5 psid	7079	1µ absolute (β₁≥1000)	-20° to 220°	-29° to 104°
DC-RS-200	42.75 / 1,066	23.5 / 597	4″	200 / 90.72	240 @ 0.5 psid	6796	1µ absolute (β₁≥1000)	-20° to 220°	-29° to 104°

Model Sizing

Model	Suction/Return Rate at 0.5 psid (gpm/lpm)	Gearbox/Storage Tank Max. Volume (gal/L)	Hydraulic Reservoir Max. Volume (gal/L)
DC-RS-3	636 / 2407	800 / 3,028	400 / 1,514
DC-RS-5	636 / 2407	1,300 / 4,921	600 / 2,271
DC-RS-9	598 / 2265	2,400 / 9,085	1,200 / 4,542
DC-RS-15	1,534 / 5,805	4,000 / 15,142	1,800 / 6,814
DC-RS-25	1,047 / 3,964	7,000 / 26,498	Contact Des-Case
DC-RS-50	860 / 3,256	14,000 / 52,996	Contact Des-Case
DC-RS-75	598 / 2,265	21,000 / 79,494	Contact Des-Case
DC-RS-100	2,020 / 7,645	30,000 / 113,562	Contact Des-Case
DC-RS-150	1,870 / 7,079	50,000 / 189,271	Contact Des-Case
DC-RS-200	1,795 / 6,796	75,000 / 283,906	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.

Did You Know...

It cost ten times as much to remove contamination from equipment than it does to exclude it?

Moisture contamination is the second most destructive contaminant in most systems.

Maintaining clean oil can extend equipment life as much as 2-5 times?

Adapters

Part Number	Description	Adapter Type
DC-13-4C	1″ NPT	Steel
DC-13-6C	2″ NPT (DC-RS-3, DC-RS-5, DC-RS-9)	Steel
DC-13-10C	3″ NPT (DC-RS-15, DC-RS-25, DC-RS-50, DC-RS-75)	Steel
DC-13-40C	4″ NPT (DC-RS-15, DC-RS-100, DC-RS-150, DC-RS-200)	Steel
DC-13-4C-SS	1″ NPT Stainless Steel	Stainless Steel
DC-13-6C-SS	2″ NPT Stainless Steel (DC-RS-3, DC-RS-5, DC-RS-9)	Stainless Steel
DC-13-10C-SS	3″ NPT Stainless Steel (DC-RS-15, DC-RS-25, DC-RS-50, DC-RS-75)	Stainless Steel
DC-13-40C-SS	4″ NPT Stainless Steel (DC-RS-15, DC-RS-100, DC-RS-150, DC-RS-200)	Stainless Steel

Features

By the Numbers

1–Pleated Filter Element
Filter element captures airborne contamination to 1-micron absolute (ß₁≥1000).

2–Desiccant
Silica gel strips moisture from incoming air. Desiccant can be customized to mitigate a variety of chemicals or fumes.

3–Outside Sight Glass Indicator
Silica gel changes color from blue to light pink when the unit requires component replacement (or rebuilding).

4–Air Vents
Removable stickers keep breather inactive until installation.

5–Integrated Standpipe
Resilient construction provides durability and allows oil mist to coalesce and drain back into the reservoir.

6–Foam Pad
Foam filter captures any large particles and disperses incoming air evenly over filtration and drying areas.

7–Easy-to-Replace Desiccant Bag
Polypropylene bag has handles for easy removal.

8–Rugged Housing
Powder-coated carbon steel or stainless steel housing provides excellent protection against the elements.

Applications

Bulk Storage
Diesel Tank Storage
Harsh Environments
High Flow Applications
Large Hydraulic Reservoirs

Chemical Compatibility

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