50 lb. aluminum CO2 cylinder with siphon tube / dip tube pre-installed. High-quality cylinder with great capacity and the built-in ability to fill multiple smaller cylinders.

50 lb. Aluminum CO2 Cylinder with Siphon Tube and Handle

New 50 lb. aluminum CO2 cylinder with siphon tube (dip tube) already installed. The largest portable CO2 tank you can buy with the added function of a siphon tube, for simple filling of small cylinders or liquid dispensing without inverting the cylinder.


Premium Construction

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


Quality Features

  • 8.6″ diameter x 50″ height (with valve and handle)
  • 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.


50 lb CO2 tanks are also available without the siphon tube.

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 support@gascylindersource.com.

Additional information

Shipping Weight53 lbs
Shipping Dimensions52 x 11 x 11 in
Gas Type





Brushed Aluminum


50 lb / 22.7 kg





Service Pressure

1800 PSI / 124 bar

Test Pressure

3000 PSI / 207 bar

Internal Volume

2038.2 cu in / 33.4 l

Water Capacity

73.6 lb / 33.4 kg

Tare Weight

50.65 lb / 22.9 kg


46.5" / 1181 mm


8.6" / 218 mm

Thread Size

1.125" UNF


Cylinder Filling



Siphon Tube Note

Additional external components are needed to siphon CO2 to another tank; components are not included.


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