Reduce the pressure of a compressed gas through a manufacturers specified regulato r attached to the cylinder valve. Ensure the threads on a regulator or union correspond with those on the cylinder valve outlet. Do not force mismatched connections. Use regulators and pressure gauges only with gases for which they are designed and intended. Do not use adapters or modify connectors to circumvent this rule.
Open cylinder valves slowly with valve outlet directed away from all personnel.
This will prevent a flash-back and a possible explosive mixture. Never use oil or grease on valves or attachments for oxygen cylinders and never handle oxygen cylinders and apparatus with oily hands, gloves, or clothing. Test cylinders for leaks each time you use them. If leaks occur in cylinders of noxious or combustible gases, close the valve and remove the cylinder outdoors or place in fume hood and notify the Safety Office. Purge oxygen and acetylene lines before lighting.