The O2GO All-In-One regulator/valve makes oxygen transport simple, economical, and easy. The regulator is always available and ready because it’s attached to the cylinder. The O2Go features an integrated regulator with a built-in fill valve, allowing for easy transfilling using a standard CGA 540 fitting. The unique “Patent Pending” composite designed regulator yields a more lightweight product which adds to ease of use and portability. The fill valve is designed for automatic operation without the need for a manual valve. All brass internal construction is designed to perform in a pure oxygen environment. This design has passed ASTM G175 ignition sensitivity testing for oxygen regulators by an independent laboratory. Proudly manufactured, built, and tested, in the U.S.A. This lightweight “Time Tested” & “Patented” Regulator technology is available in a variety of flow selections and connection styles.