Product Detail


Quick Overview


Max Air Flow: 25 cfm (11.8 l/s)
Max Reservoir Fluid Flow: 187 gpm (708 l/min)
Filter Rating: 2 µm

Air Sentry® set the industry gold standard with their first line of contamination control breathers in 1997 and today that standard is raised with GUARDIAN.

Air Sentry was the first to integrate check valve technology into a desiccant breather. Being the first to offer replacement cartridges was another significant stride in reducing replacement costs for customers. GUARDIAN takes check valve technology and cost-saving replacement measures to the next level. Air Sentry has four exclusive advancements that will raise the bar again in contamination control.

TritanTM Construction

GUARDIAN is the first breather ever constructed of Tritan. This patented material is the most chemical-, temperature-, and impact-resistant combination casing on the market.

Isolation Check Valve

GUARDIAN is first again with an isolation check valve, which isolates the adsorbent from exhaust air to lengthen service life of the desiccant while also protecting it from volatile and splashing fluids.

Integrated Compound Vacuum / Pressure Gauge

This proprietary feature is a true-life accurate indicator of filter conditions.


Stack cartridges to extend the life of breathers even further using the Modular Stack Ring™. This proprietary feature lengthens the service life, reducing cost and maintenance intervals.

G5 G8 G12
Filter Element Height 5 in 12.7 cm 8 in 20.3 cm 12 in 30.5 in
Max Air Flow 25 cfm 11.8 l/s 25 cfm 11.8 l/s 25 cfm 11.8 l/s
Max Reservoir Fluid Flow 187 gpm 708 l/min 187 gpm 708 l/min 187 gpm 708 l/min
Max Absorption Capacity 9.2 fl oz 272 ml 17.2 fl oz 508.7 ml 27.6 fl oz 816 ml
Filtration Rating 2 µm 2 µm 2 µm

Product Specifications