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Guardian-Series Desiccant Breathers

GUARDIAN is Air Sentry's industry leading breather series. Some models feature an isolation check valve that keeps exhaust air from depleting the desiccant and protects from volatile fumes and splashing fluids. The GUARDIAN's casing is constructed from Tritan®, a patented material highly resistant to impact and chemicals with a broad range of operating temperatures. These unique features equate to a longer life for your breather and your equipment.

GUARDIAN's modular construction and optional add-on features allow you to customize each Guardian model to your specific application requirements. From the isolation check valve, to its stackable design, from its wash-down cap, or its compound indicating gauge, to the high-capacity HEPA filter, the GUARDIAN will last longer and reduce downtime giving you the flexibility you need to protect your industrial assets.

Ideal for Most Applications - The only desiccant breather series that Air Sentry recommends for diesel fuel applications* (not recommended for other fuel applications) *Guardian breathers used on diesel fuel applications must be accompanied with an isolation check valve. See Guardian models ending in NC, NG, NGC. Not available in models ending in N.

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specifications

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  • Product Guardian-Series Desiccant Breathers
  • Base material Silica Gel


Model Height Diameter Mounting Connection Silica Gel Maximum Adsorption Capacity Maximum Air Flow Maximum Reservoir Fluid Flow Type of Medium Isolation Check Valve Compound Indicating Gauge Cartridge
G5S1N 9 in 22.3 cm 5.125 in 1" NPT 1.5 lbs 0.68 kg 9.2 fl oz 272 mL 25 cfm 187 gpm Silica Gel No No GRC5S
G5S1NC 9 in 22.3 cm 5.125 in 1" NPT 1.5 lbs 0.68 kg 9.2 fl oz 272 mL 25 cfm 187 gpm Silica Gel Yes No GRC5SC
G5S1NG 9 in 22.3 cm 5.125 in 1" NPT 1.5 lbs 0.68 kg 9.2 fl oz 272 mL 25 cfm 187 gpm Silica Gel No Yes GRC5S
G5S1NGC 9 in 22.3 cm 5.125 in 1" NPT 1.5 lbs 0.68 kg 9.2 fl oz 272 mL 25 cfm 187 gpm Silica Gel Yes Yes GRC5SC
G5S2N 9 in 22.3 cm 5.125 in 2" NPT 1.5 lbs 0.68 kg 9.2 fl oz 272 mL 25 cfm 187 gpm Silica Gel No No GRC5S
G5S2NC 9 in 22.3 cm 5.125 in 2" NPT 1.5 lbs 0.68 kg 9.2 fl oz 272 mL 25 cfm 187 gpm Silica Gel Yes No GRC5SC
G5S2NG 9 in 22.3 cm 5.125 in 2" NPT 1.5 lbs 0.68 kg 9.2 fl oz 272 mL 25 cfm 187 gpm Silica Gel No Yes GRC5S
G5S2NGC 9 in 22.3 cm 5.125 in 2" NPT 1.5 lbs 0.68 kg 9.2 fl oz 272 mL 25 cfm 187 gpm Silica Gel Yes Yes GRC5SC
G5S1B 9 in 22.3 cm 5.125 in 1" BSP 1.5 lbs 0.68 kg 9.2 fl oz 272 mL 25 cfm 187 gpm Silica Gel No No GRC5S
G5S1BC 9 in 22.3 cm 5.125 in 1" BSP 1.5 lbs 0.68 kg 9.2 fl oz 272 mL 25 cfm 187 gpm Silica Gel Yes No GRC5SC
G5S1BG 9 in 22.3 cm 5.125 in 1" BSP 1.5 lbs 0.68 kg 9.2 fl oz 272 mL 25 cfm 187 gpm Silica Gel No Yes GRC5S
G5S1BGC 9 in 22.3 cm 5.125 in 1" BSP 1.5 lbs 0.68 kg 9.2 fl oz 272 mL 25 cfm 187 gpm Silica Gel Yes Yes GRC5SC
Model Height Diameter Mounting Connection Silica Gel Maximum Adsorption Capacity Maximum Air Flow Maximum Reservoir Fluid Flow Type of Medium Isolation Check Valve Compound Indicating Gauge Cartridge
G8S1N 12 in 30.5 cm 5.125 in 1" NPT 2.8 lbs 1.27 kg 17.2 fl oz 508.7 mL 25 cfm 187 gpm Silica Gel No No GRC8S
G8S1NC 12 in 30.5 cm 5.125 in 1" NPT 2.8 lbs 1.27 kg 17.2 fl oz 508.7 mL 25 cfm 187 gpm Silica Gel Yes No GRC8SC
G8S1NG 12 in 30.5 cm 5.125 in 1" NPT 2.8 lbs 1.27 kg 17.2 fl oz 508.7 mL 25 cfm 187 gpm Silica Gel No Yes GRC8S
G8S1NGC 12 in 30.5 cm 5.125 in 1" NPT 2.8 lbs 1.27 kg 17.2 fl oz 508.7 mL 25 cfm 187 gpm Silica Gel Yes Yes GRC8SC
G8S2N 12 in 30.5 cm 5.125 in 2" NPT 2.8 lbs 1.27 kg 17.2 fl oz 508.7 mL 25 cfm 187 gpm Silica Gel No No GRC8S
G8S2NC 12 in 30.5 cm 5.125 in 2" NPT 2.8 lbs 1.27 kg 17.2 fl oz 508.7 mL 25 cfm 187 gpm Silica Gel Yes No GRC8SC
G8S2NG 12 in 30.5 cm 5.125 in 2" NPT 2.8 lbs 1.27 kg 17.2 fl oz 508.7 mL 25 cfm 187 gpm Silica Gel No Yes GRC8S
G8S2NGC 12 in 30.5 cm 5.125 in 2" NPT 2.8 lbs 1.27 kg 17.2 fl oz 508.7 mL 25 cfm 187 gpm Silica Gel Yes Yes GRC8SC
G8S1B 12 in 30.5 cm 5.125 in 1" BSP 2.8 lbs 1.27 kg 17.2 fl oz 508.7 mL 25 cfm 187 gpm Silica Gel No No GRC8S
G8S1BC 12 in 30.5 cm 5.125 in 1" BSP 2.8 lbs 1.27 kg 17.2 fl oz 508.7 mL 25 cfm 187 gpm Silica Gel Yes No GRC8SC
G8S1BG 12 in 30.5 cm 5.125 in 1" BSP 2.8 lbs 1.27 kg 17.2 fl oz 508.7 mL 25 cfm 187 gpm Silica Gel No Yes GRC8S
G8S1BGC 12 in 30.5 cm 5.125 in 1" BSP 2.8 lbs 1.27 kg 17.2 fl oz 508.7 mL 25 cfm 187 gpm Silica Gel Yes Yes GRC8SC
Model Height Diameter Mounting Connection Silica Gel Maximum Adsorption Capacity Maximum Air Flow Maximum Reservoir Fluid Flow Type of Medium Isolation Check Valve Compound Indicating Gauge Cartridge
G12S1N 16 in 40.6 cm 5.125 in 1" NPT 4.5 lbs 2 kg 27.6 fl oz 816 mL 25 cfm 187 gpm Silica Gel No No GRC12S
G12S1NC 16 in 40.6 cm 5.125 in 1" NPT 4.5 lbs 2 kg 27.6 fl oz 816 mL 25 cfm 187 gpm Silica Gel Yes No GRC12SC
G12S1NG 16 in 40.6 cm 5.125 in 1" NPT 4.5 lbs 2 kg 27.6 fl oz 816 mL 25 cfm 187 gpm Silica Gel No Yes GRC12S
G12S1NGC 16 in 40.6 cm 5.125 in 1" NPT 4.5 lbs 2 kg 27.6 fl oz 816 mL 25 cfm 187 gpm Silica Gel Yes Yes GRC12SC
G12S2N 16 in 40.6 cm 5.125 in 2" NPT 4.5 lbs 2 kg 27.6 fl oz 816 mL 25 cfm 187 gpm Silica Gel No No GRC12S
G12S2NC 16 in 40.6 cm 5.125 in 2" NPT 4.5 lbs 2 kg 27.6 fl oz 816 mL 25 cfm 187 gpm Silica Gel Yes No GRC12SC
G12S2NG 16 in 40.6 cm 5.125 in 2" NPT 4.5 lbs 2 kg 27.6 fl oz 816 mL 25 cfm 187 gpm Silica Gel No Yes GRC12S
G12S2NGC 16 in 40.6 cm 5.125 in 2" NPT 4.5 lbs 2 kg 27.6 fl oz 816 mL 25 cfm 187 gpm Silica Gel Yes Yes GRC12SC
G12S1B 16 in 40.6 cm 5.125 in 1" BSP 4.5 lbs 2 kg 27.6 fl oz 816 mL 25 cfm 187 gpm Silica Gel No No GRC12S
G12S1BC 16 in 40.6 cm 5.125 in 1" BSP 4.5 lbs 2 kg 27.6 fl oz 816 mL 25 cfm 187 gpm Silica Gel Yes No GRC12SC
G12S1BG 16 in 40.6 cm 5.125 in 1" BSP 4.5 lbs 2 kg 27.6 fl oz 816 mL 25 cfm 187 gpm Silica Gel No Yes GRC12S
G12S1BGC 16 in 40.6 cm 5.125 in 1" BSP 4.5 lbs 2 kg 27.6 fl oz 816 mL 25 cfm 187 gpm Silica Gel Yes Yes GRC12SC

Replacement Cartridges

Model Height Diameter Mounting Connection Silica Gel Maximum Adsorption Capacity Maximum Air Flow Maximum Reservoir Fluid Flow Type of Medium Isolation Check Valve Compound Indicating Gauge Cartridge
GRC5AC 5 in 5 in n/a 0.67 lbs 0.3 kg n/a n/a n/a Activated Carbon for Fume and Odor Removal No n/a n/a
GRC5ACC 5 in 5 in n/a 0.67 lbs 0.3 kg n/a n/a n/a Activated Carbon for Fume and Odor Removal Yes n/a n/a
GRC5M 5 in 5 in n/a 1.5 lbs 0.68 kg 4.6 fl oz 136 mL n/a n/a Molecular Sieve for low humidity No n/a n/a
GRC5MC 5 in 5 in n/a 1.5 lbs 0.68 kg 4.6 fl oz 136 mL n/a n/a Molecular Sieve for low humidity Yes n/a n/a
GRC5S 5 in 5 in n/a 1.5 lbs 0.68 kg 9.2 fl oz 272 mL n/a n/a Silica Gel No n/a n/a
GRC5SC 5 in 5 in n/a 1.5 lbs 0.68 kg 9.2 fl oz 272 mL n/a n/a Silica Gel Yes n/a n/a
GRC8S 8 in 5 in n/a 2.8 lbs 1.27 kg 17.2 fl oz 508.7 mL n/a n/a Silica Gel No n/a n/a
GRC8SC 8 in 5 in n/a 2.8 lbs 1.27 kg 17.2 fl oz 508.7 mL n/a n/a Silica Gel Yes n/a n/a
GRC12S 12 in 5 in n/a 4.5 lbs 2 kg 27.6 fl oz 816 mL n/a n/a Silica Gel No n/a n/a
GRC12SC 12 in 5 in n/a 4.5 lbs 2 kg 27.6 fl oz 816 mL n/a n/a Silica Gel Yes n/a n/a


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