Paintball cylinders are filled with CO2.

CO2 cylinders are the ideal choice for commercial dispensing beers, lagers, ciders, stouts and carbonated soft drinks, as well as for use in “kegerators” and other home-dispensing devices.

CO2 cylinders,as used in beverage industry,offer the following advantages:

1. Cylinders are made from special alloy  so as to improve its durability, fracture toughness and resistance to tearing and         cracking. Providing an exemplary record for safety and dependability.
2. Highly corrosion-resistant interior and exterior—ideal for wet gases.
3. Cylinders perform well at low temperatures.
4. Lightweight––up to 40 percent lighter than comparable steel cylinders.
5. Consistent weight.
6. Thick, consistent walls resist damage.
7. Brushed external surface provides a low-maintenance finish.
8. Minimum burst pressure tested to 2.5 times service pressure without failure.

Also, CO2 cylinders play an important role in welding,medicine,agriculture and paintball.