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CGA Selection Charts. It is recommended that the user thoroughly familiarize himself with the specific properties of these gases. The Compressed Gas Association (CGA) has selected and standardized the valve outlet to be used on each gas cylinder.
Consult your gas supplier or the CGA to determine the actual valve type and CGA connection required for your application. Compressed gas cylinders, valves, and the gases contained in them are dangerous and should only be handled by qualified individuals.
A CGA fitting is the standardized system for the attachment of a compressed gas cylinder to the required regulator or transfer line. Examples of CGA fittings would be CGA-580 for Non-flamable, Non-oxidizing gases such as Nitrogen, Argon, or Helium.
MIXED GASES CGA SE LEC TION CHART FOR FITTINGS. It is recommended that the user thoroughly familiarize himself with the specifi c properties of these gases. Th e Compressed Gas Association (CGA) has selected and standardized the valve outlet to be used on each gas cylinder.
CGA (Compressed Gas Association) connections are adapter fittings designed to connect a cylinder of compressed gas to either a regulator, pigtail, hose assembly, etc. Each CGA Series (I.E. 580, 590, 660) has a unique design which will only “mate” with the corresponding cylinder connection.
Confirm compatibility between the gas, the cylinder and the valve. Identify the gas to be filled into the cylinder and understand the properties of that gas. The gas cylinder and the valve shall be constructed of materials that are compatible with the gas (where they are in contact with the gas).
ISO 5145 [1] presents a system for determining valve outlets for gas cylinders for all gases or gas mixtures. It will be of interest and use for those countries that have no national standards or regulations. It is recommended to use ISO 5145[1] when selecting cylinder valves for 300 bar or above.
