CO2 (Carbon Dioxide)

A CO2 cylinder, also known as a carbon dioxide cylinder, is a pressurized container that holds carbon dioxide in a liquid or gaseous state. CO2 cylinders are often used in fire extinguishers, carbonated beverage dispensers, and airgun pellet guns.

Fire extinguishers use CO2 to smother fires by displacing oxygen in the air. Carbonated beverage dispensers use CO2 to keep beverages carbonated and under pressure. Airgun pellet guns use CO2 to propel pellets at high speeds.