05-26-2012, 11:08 AM
The FDA doesn't have standard colors for medical gases <!-- m --><a class="postlink" href="http://www.apsf.org/newsletters/html/2010/spring/10_cylinder.htm">http://www.apsf.org/newsletters/html/20 ... linder.htm</a><!-- m --> so I doubt there is an industry standard for other gases. I was getting Oxygen in orange, red, or green bottles when I retired at the end of 2010. It may be that some companies paint their cylinders different so they can easily identify them. It seemed like most of the orange ones were Airco, while the others came from Butler gas.
The threads were different on the combustionable gases, being left hand turns.
Charlie
The threads were different on the combustionable gases, being left hand turns.
Charlie