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VentGuard™ Series Breathers

Des-Case VentGuard™ breathers have check-valve technology that isolates the system and only ‘breathes’ when necessary, making them an ideal solution that 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.

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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 / kg) 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 / 0.06 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 / 0.1 2 / 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 / 0.4 5 / 144 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 / 0.6 9 / 253 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 / 0.9 12 / 359 10 @ 1 psid 283 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 75 / 283 500  / 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...

Adapters

Part Number Description
DC-18 1″-1/4″ Brass Threaded Reducer/Adapter
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

VentGuard Breather Cutaway1–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

Applications

  • Intermittent Operations
  • Gearboxes
  • Low-Flow Applications
  • High-Humidity
  • Washdown

Breather Sizing Wizard

Not sure which breather is right for your system? Try our sizing wizard to help determine the best solution for you.

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