Which component is NOT on CO2 extinguishers?

Which component is NOT on CO2 extinguishers?

• A. Data Plate
• B. Discharge Hose
• C. Carrying Handle
• D. Pressure Gauge (not on CO2)

Answer: (D)

CO2 extinguishers rely on the weight of the charged cylinder rather than a pressure reading to indicate charge. The pressure inside CO2 units changes with temperature and a gauge wouldn’t reliably reflect readiness for use, so these extinguishers typically do not include a pressure gauge. You’ll commonly find a data plate with ratings, a carrying handle for transport, and a discharge path (horn or hose) to direct the CO2. Because of this design, the component that is not on CO2 extinguishers is a pressure gauge.

CO2 extinguishers rely on the weight of the charged cylinder rather than a pressure reading to indicate charge. The pressure inside CO2 units changes with temperature and a gauge wouldn’t reliably reflect readiness for use, so these extinguishers typically do not include a pressure gauge. You’ll commonly find a data plate with ratings, a carrying handle for transport, and a discharge path (horn or hose) to direct the CO2. Because of this design, the component that is not on CO2 extinguishers is a pressure gauge.