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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)

Features

RS Desiccant Breather Cutaway

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

Specifications

Model
DC-RS-3

Unit Height
11.50 in (292 mm)

Unit Diameter
10.13 in (257 mm)

Filter Efficiency
1μ absolute (β1≥1000)

Amount of Silica Gel
3 lbs (1.36 kg)

Max. Flow Rate
85 cfm (2407 lpm)

Operating Temp. Range
-20°F to 220°F (-29°C to 104°C)

Connection Size
2″

Suction/Return Rate at 0.5 psid
636 gpm (2407 lpm)

Gearbox/Storage Tank Max. Volume
800 gal (3,028 L)

Hydraulic Reservoir Max. Volume
400 gal (1,514 L)

DC-RS-5

Unit Height
13.75 in (349 mm)

Unit Diameter
10.13 in (257 mm)

Filter Efficiency
1μ absolute (β1≥1000)

Amount of Silica Gel
5 lbs (2.27 kg)

Max. Flow Rate
85 cfm (2407 lpm)

Operating Temp. Range
-20°F to 220°F (-29°C to 104°C)

Connection Size
2″

Suction/Return Rate at 0.5 psid
636 gpm (2407 lpm)

Gearbox/Storage Tank Max. Volume
1,300 gal (4,921 L)

Hydraulic Reservoir Max. Volume
600 gal (2,271 L)

DC-RS-9

Unit Height
18.25 in (454 mm)

Unit Diameter
10.13 in (257 mm)

Filter Efficiency
1μ absolute (β1≥1000)

Amount of Silica Gel
9 lbs (4.08 kg)

Max. Flow Rate
80 cfm (2265 lpm)

Operating Temp. Range
-20°F to 220°F (-29°C to 104°C)

Connection Size
2″

Suction/Return Rate at 0.5 psid
598 gpm (2265 lpm)

Gearbox/Storage Tank Max. Volume
2,400 gal (9,085 L)

Hydraulic Reservoir Max. Volume
1,200 gal (4,542 L)

DC-RS-15

Unit Height
19.25 in (489 mm)

Unit Diameter
15.5 in (394 mm)

Filter Efficiency
1μ absolute (β1≥1000)

Amount of Silica Gel
15 lbs (6.80 kg)

Max. Flow Rate
205 cfm (5805 lpm)

Operating Temp. Range
-20°F to 220°F (-29°C to 104°C)

Connection Size
3″

Suction/Return Rate at 0.5 psid
1,534 gpm (5,805 lpm)

Gearbox/Storage Tank Max. Volume
4,000 gal (15,142 L)

Hydraulic Reservoir Max. Volume
1,800 gal (6,814 L)

DC-RS-25

Unit Height
22.5 in (571 mm)

Unit Diameter
15.5 in (394 mm)

Filter Efficiency
1μ absolute (β1≥1000)

Amount of Silica Gel
25 lbs (11.34 kg)

Max. Flow Rate
140 cfm (3964 lpm)

Operating Temp. Range
-20°F to 220°F (-29°C to 104°C)

Connection Size
3″

Suction/Return Rate at 0.5 psid
1,047 gpm (3,964 lpm)

Gearbox/Storage Tank Max. Volume
7,000 gal (26,498 L)

Hydraulic Reservoir Max. Volume
Contact Des-Case

DC-RS-50

Unit Height
31.25 in (794 mm)

Unit Diameter
15.5 in (394 mm)

Filter Efficiency
1μ absolute (β1≥1000)

Amount of Silica Gel
50 lbs (22.68 kg)

Max. Flow Rate
115 cfm (3256 lpm)

Operating Temp. Range
-20°F to 220°F (-29°C to 104°C)

Connection Size
3″

Suction/Return Rate at 0.5 psid
860 gpm (3,256 lpm)

Gearbox/Storage Tank Max. Volume
14,000 gal (52,996 L)

Hydraulic Reservoir Max. Volume
Contact Des-Case

DC-RS-75

Unit Height
39.75 in (1010 mm)

Unit Diameter
15.5 in (394 mm)

Filter Efficiency
1μ absolute (β1≥1000)

Amount of Silica Gel
75 lbs (34.02 kg)

Max. Flow Rate
80 cfm (2265 lpm)

Operating Temp. Range
-20°F to 220°F (-29°C to 104°C)

Connection Size
3″

Suction/Return Rate at 0.5 psid
598 gpm (2,265 lpm)

Gearbox/Storage Tank Max. Volume
21,000 gal (79,494 L)

Hydraulic Reservoir Max. Volume
Contact Des-Case

DC-RS-100

Unit Height
31 in (787 mm)

Unit Diameter
23.5 in (597 mm)

Filter Efficiency
1μ absolute (β1≥1000)

Amount of Silica Gel
100 lbs (45.36 kg)

Max. Flow Rate
270 cfm (7645 lpm)

Operating Temp. Range
-20°F to 220°F (-29°C to 104°C)

Connection Size
4″

Suction/Return Rate at 0.5 psid
2,020 gpm (7,645 lpm)

Gearbox/Storage Tank Max. Volume
30,000 gal (113,562 L)

Hydraulic Reservoir Max. Volume
Contact Des-Case

DC-RS-150

Unit Height
36.75 in (933 mm)

Unit Diameter
23.5 in (597 mm)

Filter Efficiency
1μ absolute (β1≥1000)

Amount of Silica Gel
150 lbs (68.04 kg)

Max. Flow Rate
250 cfm (7079 lpm)

Operating Temp. Range
-20°F to 220°F (-29°C to 104°C)

Connection Size
4″

Suction/Return Rate at 0.5 psid
1,870 gpm (7,079 lpm)

Gearbox/Storage Tank Max. Volume
50,000 gal (189,271 L)

Hydraulic Reservoir Max. Volume
Contact Des-Case

DC-RS-200

Unit Height
42.75 in (1066 mm)

Unit Diameter
23.5 in (597 mm)

Filter Efficiency
1μ absolute (β1≥1000)

Amount of Silica Gel
200 lbs (90.72 kg)

Max. Flow Rate
240 cfm (6796 lpm)

Operating Temp. Range
-20°F to 220°F (-29°C to 104°C)

Connection Size
4″

Suction/Return Rate at 0.5 psid
1,795 gpm (6,796 lpm)

Gearbox/Storage Tank Max. Volume
75,000 gal (283,906 L)

Hydraulic Reservoir Max. Volume
Contact Des-Case

Adapters

Part Number
DC-13-4C
DC-13-6C
DC-13-10C
DC-13-40C
DC-13-4C-SS
DC-13-6C-SS
DC-13-10C-SS
DC-13-40C-SS

Descriptions
1″ NPT
2″ NPT (DC-RS-3, DC-RS-5, DC-RS-9)
3″ NPT (DC-RS-15, DC-RS-25, DC-RS-50, DC-RS-75)
4″ NPT (DC-RS-15, DC-RS-100, DC-RS-150, DC-RS-200)
1″ NPT Stainless Steel
2″ NPT Stainless Steel (DC-RS-3, DC-RS-5, DC-RS-9)
3″ NPT Stainless Steel (DC-RS-15, DC-RS-25, DC-RS-50, DC-RS-75)
4″ NPT Stainless Steel (DC-RS-15, DC-RS-100, DC-RS-150, DC-RS-200)

Adapter Type
Steel
Steel
Steel
Steel
Stainless Steel
Stainless Steel
Stainless Steel
Stainless Steel

Tech Sheets

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