Thanks Walter for the information. Interesting story. Instructions and information state "contains approximately 5 gallons pure USP Oxygen". The valve is more in line with a pressurized whip cream container.Definitely 1960s. Otto Bernz a/k/a Bernzomatic drove itself beyond nuts trying to develop that cylinder and insert a plastic neck into it in a way that allowed the joint to retain pressure for more than a month. The closest they got was being able to package spray paint in the cylinder successfully.
Top pressure on that can was around 125psi before something let go. When they moved the paint line to the new factory in Albion it became short lived after the new concrete floor got painted by cans going off on their own.