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Air Liquide’s exclusive SMARTOP™ valve for specialty and industrial gases in compressed gas cylinders saves time and gas while improving workplace safety.


SMARTOP™ – an innovative brand that simplifies gas handling and improves safety –is a residual pressure valve equipped with an on/off lever and a permanent pressure gauge, allowing you to check the content of your cylinder anytime.

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


SMARTOP™ works with all single-stage and two-stage pressure regulators.