Caustic Fumes / Gaseous Applications

Typical Applications

  • Airport Boarding Bridges
  • Hydraulic Fluid Reservoirs
  • Forklifts
  • Baggage Haulers

Air Sentry® Gas Neutralization System (GNS) breathers provide an economical and simple solution to the problem of gases being produced during the battery charging process. Health and safety regulations often require that battery charging be performed in a specially designated area, away from personnel, electrical equipment or possible ignition sources.

GNS breathers are easy to install using valves attached to the battery vents and plastic tubing which transports the exhaust gases to the GNS mounting point, located either on or off the equipment. This flexibility allows the charging to take place at the work site or in an enclosed work area.

Air Sentry® GNS Breathers were designed in cooperation with a major international airline/air cargo company for use on ground support equipment. This real-world solution is ready for duty!


Model Height Diameter Mounting Connection Silica Gel Carbon Weight Maximum Adsorption Capacity Maximum
Air Flow
Maximum Reservoir
Fluid Flow
Type of Medium
F-302 9.25 in
23.5 cm
5 in
12.7 cm
1" slip fit 1.6 lbs
0.7 kg
0.7 lbs
0.3 kg
9.82 fl oz
290 mL
10 cfm 75 gpm 33% Activated Carbon 67% Silica Gel
F-309 17.25 in
43.8 cm
5 in
12.7 cm
1" slip fit 3.0 lbs
1.4 kg
1.5 lbs
0.7 kg
18.4 fl oz
544 mL
10 cfm 75 gpm 33% Activated Carbon 67% Silica Gel

GUARDIAN BreathersGUARDIAN AccessoriesD-Series Disposable StationaryF-Series Caustic Fumes/GaseousL-Series In-Line Low AirflowM-Series Heavy DutyR-Series High VibrationX-Series High Humidity/DustXR-Series Extreme EnvironmentZ-Series Limited SpaceAdaptersAccessories