Des-Case Standard DCBB and DC4 Breather 1.1

VentGuard™ Desiccant Series Breathers

Des-Case VentGuard™ breathers have check-valve technology that isolates the system and only ‘breathes’ when necessary, making them an ideal solution to protect low-flow applications with intermittent operations. Check valves provide slight system pressurization that allows for controlled breathing without excessive pressure build-up. The system breathes only when pressured to do so, and then the air is cleaned and dried before it is introduced into the system, ensuring a clean, dry headspace. This control mechanism also prevents premature saturation of the silica gel and extends breather life, a problem not as easily tackled by standard desiccant breathers exposed to extreme moisture.

Compare Models (5)

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Specifications

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Model Specs

Model	Unit Height (in / mm)	Unit Diameter (in / mm)	Connection Size	Amount of Silica Gel (lbs / g)	Adsorption Capacity (fl oz / ml)	Max. Flow Rate (cfm)	Max. Flow Rate (lpm)	Filter Efficiency	Operating Temp. Range (°F)	Operating Temp. Range (°C)
DC-VG-BB	3.87 / 98	2.52 / 64	3/8″ Multi-Fit (NPT, BSPP, BSPT)”	0.1 / 59	0.8 / 23	1 @ 1 psid	41	3µ absolute (β₃≥200)	-20° to 200°	-29° to 93°
DC-VG-1	5.36 / 136	2.52 / 64	3/8″ Multi-Fit (NPT, BSPP, BSPT)”	0.3 / 127	1.7 / 50	1 @ 1 psid	41	3µ absolute (β₃≥200)	-20° to 200°	-29° to 93°
DC-VG-2	6.00 / 152	4.10 / 104	1″ Multi-Fit (NPT, BSPT, NPSM)”	0.8 / 365	5 / 142	12 @ 1 psid	340	3µ absolute (β₃≥200)	-20° to 200°	-29° to 93°
DC-VG-3	8.00 / 203	4.10 / 104	1″ Multi-Fit (NPT, BSPT, NPSM)”	1.4 / 643	9 / 251	11 @ 1 psid	311	3µ absolute (β₃≥200)	-20° to 200°	-29° to 93°
DC-VG-4	10.00 / 254	4.10 / 104	1″ Multi-Fit (NPT, BSPT, NPSM)”	2.0 / 913	12 / 356	11 @ 1 psid	311	3µ absolute (β₃≥200)	-20° to 200°	-29° to 93°

Model Sizing

Model	Suction/Return Rate at 1 psid (gpm/lpm)	Gearbox/Storage Tank Max. Volume (gal/L)	Hydraulic Reservoir Max. Volume (gal/L)
DC-VG-BB	11 / 41	15 / 57	2 / 8
DC-VG-1	11 / 41	35 / 132	5 / 19
DC-VG-2	90 / 340	200 / 757	60 / 227
DC-VG-3	82 / 311	350 / 1325	100 / 379
DC-VG-4	82 / 311	500 / 1893	200 / 757

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...

Particle contamination is responsible for as much as 80% of machine wear?

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?

Adapters

Part Number	Description
DC-12-T	Threaded Flange Adapter
DC-12-TG	Threaded Flange Adapter with Gasket
DC-15-T	Bayonet Adapter
DC-SDVA-12M	3/4″ NPT Vent Valve Adapter
DC-SDVA-16M	1″ NPT Vent Valve Adapter

By the Numbers

1–Domed Cap
A domed cap allows for better washdown runoff.

2–Integrated Nylon Standpipe
The integrated standpipe provides excellent vibration resistance and dissipates impact throughout the unit, eliminating weak points. It also allows even airflow distribution throughout the unit, eliminating inaccurate readings of desiccant saturation.

3–External Ribs
External ribs on shell to create greater durability and grip when installing or replacing breather.

4–Integrated Drip Ring
An integrated drip ring keeps shedding water from entering the vent holes.

5–Threaded Mounting
Easily replaces standard filler/breather cap with multi-fit connection or one of several adapters.

6–Larger, High-Capacity Check Valves
High-capacity check valves allow for increased airflow at low cracking pressure.

7-Filter Element
Polyester filter element removes airborne contamination to 3-micron absolute. Unique loops allow particles to release during system exhalation, helping to increase breather life.

8–Enhanced Seal
An enhanced seal eliminates potential for airflow bypass.