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40 cu ft Steel Helium Cylinder

New 40 cu ft steel helium tank with installed new CGA580 valve. Larger than our 20 cu ft steel tank but with the same great features.

Tough thick-walled construction and lasting painted finish. Performs very well in low temperatures.

All cylinders ship empty. Please consult your local compressed gas supplier for filling needs.

How many balloons will this cylinder fill? Find our estimate here!

Construction and Features

  • Durable steel construction
  • Rust-resistant painted finish
  • CGA580 valve installed

Specifications, Testing, and Approvals

  • Approximately 7″ diameter x 17.9″ height* (with valve)
  • 2524 PSI service pressure / 3365 PSI test pressure
  • Fresh hydro test within 180 days of shipment
  • Tare weight: 29 lbs.
  • Retest required every 5 years
  • Applications: industry, balloons
  • DOT, ISO/UN, and TC approved
  • Ships Empty


Steel and aluminum helium cylinders in different sizes are available on our helium cylinder product page.

Additional questions? Check out our cylinder information page.

Still have questions? Email us at

Product note: compressed gas cylinders can be dangerous if used improperly. Please be careful, know the correct procedures for use, and exercise caution when connecting and using any compressed gas device.

Weight30 lbs
Dimensions19 × 8 × 8 in


Gas Type

Argon, Helium, Inert/Mixed, Neon, Nitrogen


Painted, Rust Inhibitor


40 cu ft / 1133 l





Service Pressure

2524 PSI / 174 Bar

Test Pressure

3365 PSI / 232 Bar

Internal Volume

476 cu in / 7.8 l

Water Capacity

17.2 lb / 7.8 kg

Tare Weight

28.22 lb / 12.8 kg


17.91" / 455 mm


7" / 178 mm

Thread Size

3/4" NGT


Beverage, Industrial, Tire Inflation, Welding




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