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Desiccant Breathers Protect Diesel Fuel Storage Reservoirs, Gearboxes, Pumps and other Industrial Equipment from Moisture and Particulate

Gearboxes, reservoirs and pumps all “breathe” in use. As air contracts or expands or as entering fluid displaces air in a system, outside air is drawn in from the atmosphere. Unfortunately, this breathed-in air has water and particulate that will accumulate to contaminate your system.

A desiccant breather is a straightforward solution to the problem, blocking moisture and particles from entering. Testing of leading competitors has shown that Swift-Dri Desiccant Breathers average almost 20% greater moisture-retention capacity versus leading brands.

Our unique design features a longer body, which permits 10% greater volume of silica gel desiccant beads when compared to leading competitors.

Advanced Silica Gel

Desiccant removes water from air prior to it entering your system, tank or equipment.



Built-in Status Indication

Desiccant gel changes color from blue to pink to indicate that it is removing moisture, as well as when to replace the breather.


Step Up to Superior Protection

This breather unit is a marked improvement over the customary dust caps or OEM breathers on equipment. When contaminated air enters the top of the breather, it passes through layered filter media, preventing solid particles from entering the breather and causing undue wear to your equipment surfaces. Filtered air passes through a bed of Swift-Dri™ silica gel, which removes harmful moisture from the air. The silica beads also work to attract moisture from inside the equipment reservoir during service or shut-down, keeping the equipment dry. The addition of check-valves in our CV breather is ideal for low-flow and intermittent operations in high humidity conditions.


Optional Check Valves

Our CV models have check valves to isolate equipment from high humidity ambient conditions, prolonging breather life.

Specifications, Adaptors and Sizing Guidelines


Standard Model: SFD-005
Check Valve Model: SFD-005-CV
Connection: 3/8" Sure-Fit (NPT, BSPP, BSPT)
Height: 4.30" (10.92 cm)
Width: 2.52" (6.40 cm)
Diameter: 2.35" (6.00 cm)
Stem Height: 0.5" (1.27 cm)
Silica Gel: 80 g
Max Moisture Retention: 1.0 fl. oz. (28 ml)
Max Airflow at 1-PSID
Standard Model: 7 cfm (1981 pm)
Check Valve Model: 5 cfm (1421 pm)
Particulate Retention: 3μ[c} >1000

Standard Model: SFD-010
Check Valve Model: SFD-010-CV
Connection: 3/8" Sure-Fit (NPT, BSPP, BSPT)
Height: 5.80" (14.73 cm)
Width: 2.52" (6.40 cm)
Diameter: 2.35" (6.00 cm)
Stem Height: 0.5" (1.27 cm)
Silica Gel: 150 g
Max Moisture Retention: 2.0 fl. oz. (60 ml)
Max Airflow at 1-PSID
Standard Model: 7 cfm (1981 pm)
Check Valve Model: 5 cfm (1421 pm)
Particulate Retention: 3μ[c} >1000

Standard Model: SFD-020
Check Valve Model: SFD-020-CV
Connection: 1" Sure-Fit (NPT, BSPP, NPSM)
Height: 6.24" (15.85 cm)
Width: 4.10" (10.41 cm)
Diameter: 3.84" (9.75 cm)
Stem Height: 1.25" (3.175 cm)
Silica Gel: 360 g
Max Moisture Retention: 4.8 fl. oz. (142 ml)
Max Airflow at 1-PSID
Standard Model: 18 cfm (5101 pm)
Check Valve Model: 10 cfm (2831 pm)
Particulate Retention: 3μ[c} >1000

Standard Model: SFD-030
Check Valve Model: SFD-030-CV
Connection: 1" Sure-Fit (NPT, BSPP, BSPT)
Height: 8.44" (21.27 cm)
Width: 4.10" (10.41 cm)
Diameter: 3.84" (9.75 cm)
Stem Height: 1.25" (3.175 cm)
Silica Gel: 640 g
Max Moisture Retention: 8.9 fl. oz. (264 ml)
Max Airflow at 1-PSID
Standard Model: 18 cfm (5101 pm)
Check Valve Model: 10 cfm (2832 pm)
Particulate Retention: 3μ[c} >1000

Standard Model: SFD-040
Check Valve Model: SFD-040-CV
Connection: 1" Sure-Fit (NPT, BSPP, BSPT)
Height: 10.54" (26.78 cm)
Width: 4.10" (10.41 cm)
Diameter: 3.84" (9.75 cm)
Stem Height: 1.25" (3.175 cm)
Silica Gel: 980 g
Max Moisture Retention: 14.3 fl. oz. (424 ml)
Max Airflow at 1-PSID
Standard Model: 18 cfm (5101 pm)
Check Valve Model: 10 cfm (2832 pm)
Particulate Retention: 3μ[c} >1000

General Sizing Guidelines
Recommended Maximum Volume

Gearbox or
Fluid Storage Tank
Hydraulic
Reservoir
SFD-005
SFD-005-CV
18 gal / 68 L2.5 gal/ 9 L
SFD-010
SFD-010-CV
42 gal / 160 L6 gal / 23 L
SFD-020
SFD-020-CV
240 gal / 900 L72 gal /270 L
SFD-030
SFD-030-CV
420 gal / 1600 L120 gal / 450 L
SFD-040
SFD-040-CV
600 gal / 2300 L240 gal / 900 L

The data above provides a starting point to select a breather model for your application. Factors impacting the service life of a given unit include: flow rate, breathing volume & frequency, environmental humidity, temperature, among others.

Reservoir Adapters

Element ConnectionReservoir Connection
SFBA-1000
1" NPT
Bayonet
SFBA-1100
1" NPT
Flange 6 ANSI Mounting Holes
SFBA-1200
1" Slip Fit
1"-12 UNF
SFBA-1300
1" FNPT
1" FNPT
SFBA-1400
1" FNPT
2" MNPT

Materials

 
Body
Moisture
Absorbing Media
 
Filter Media
Operating
Temperatures
ABS, Nylon
Polypropylene, Buna
Silica Gel
 
Polyester
Polyurethane
-20°F to 200°F
-29°C to 93°C