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5 lb. Aluminum CO2 Cylinder

New 5 lb. aluminum CO2 cylinder with a new CGA320 valve. The industry standard mid-size CO2 tank that combines top performance with easy portability.

Aluminum cylinder is up to 40% lighter than the same in steel. CO2 tank is finished with an attractive and durable brushed exterior. Thick walled construction for long-term use without fractures or leaks.


Premium Construction

  • Brushed finish on thick, durable cylinder walls.
  • Engineered alloy designed for high strength and great low temp performance.


Quality Features

  • 5.25″ diameter x 17.9″ height (with valve)
  • DOT- and TC-approved
  • Certified or hydro-tested within 180 days
  • New CGA320 valve
  • Consistent tare weight
  • Applications: industrial, hydroponic, and welding
  • Ships empty

Please Note: All aluminum CO2 cylinders are sourced from several manufacturers. As a result, the cylinder you receive may have a brushed dome or unfinished dome. We apologize, but we are unable to take special requests at this time.


Find this CO2 cylinder and other top-quality CO2 tanks on the CO2 cylinder page.

Additional Questions? Please see our frequently asked questions page.

Still have questions? Email us at

Weight 9 lbs
Dimensions 20 × 6 × 6 in
Gas Type





Brushed Aluminum


5 lb / 2.3 kg





Service Pressure

1800 PSI / 124 bar

Test Pressure

3000 PSI / 207 bar

Internal Volume

207.5 cu in / 3.4 l

Water Capacity

7.4 lb / 3.4 kg

Tare Weight

6.2 lb / 2.8 kg


14.2" / 361 mm


5.3" / 134 mm

Thread Size

1.125" UNF


Aquarium, Beverage, Hydroponic, Scientific, Special Effects, Tire Inflation, Welding




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