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Our exclusive SMARTOP™ valve simplifies gas handling while improving safety in the workplace.

Air Liquide designs and produces one of the market’s safest, most ergonomic, user-friendly cylinders and valves for small, medium and mobile gas needs.


With SMARTOP™, using a gas cylinder for your job has never been so easy:

  • Easy to handle with its ergonomic cap
  • Easy opening with ON/OFF lever
  • Check the content at a glance, even when the cylinder is closed, with a permanent pressure gauge
  • Includes a residual pressure valve and non-return valve


Is working safely with gases one of your concerns? Air Liquide answers your needs with SMARTOP™ :

  • Shock-absorbing cap
  • No backflow contamination
  • Built-in flow moderator
  • The cylinders with SMARTOP™ meet Transport Canada’s current requirements
  • A regulator must be connected to SMARTOP™ valve before pulling the lever ON (standard CGA connection)


With SMARTOP™ , you can save:

  • Gas: with immediate gas cut-off
  • Money: cylinders left open unintentionally can be easily identified and closed thanks to the ON/OFF lever
  • Time:  by simply moving the lever, you can quickly open and close the cylinder valve. This time saving, compared to operating a standard valve, is exceptionally beneficial for purging processes.


SMARTOP™ is available for oxygen, helium for balloons, acetylene, argon and argon mixtures - just ask our team about it!

SMARTOP™ is also available with ALPHAGAZ™ brand specialty pure gases and works perfectly with all single and two-stage gas pressure regulators from Air Liquide.


We recommend that you consult our dedicated page on Products and Equipment for Welding and  Safety. You will find the abrasives, filler metals, safety products and/or welding accessories that you need for your work and benefit from our complete offer. You can also consult our catalog on line.