Whitmore Air Sentry Model: G5S2NGC SILICA - 2'' NPT - GAUGE & ISOLATION CHECK VALVE   Specifications: Height: 9 in 22.3 cm Diameter: 5.125 in Mounting Connection: 2" NPT Silica Gel: 1.5 lbs 0.68 kg Maximum Adsorption Capacity: 9.2 fl oz 272 mL Maximum Air Flow: 25 cfm Maximum Reservoir Fluid Flow: 187 gpm Type of Medium: Silica Gel Isolation Check Valve: Yes Compound Indicating Gauge: Yes Cartridge: GRC5SC