CGA Valve Number Table

CGA Valve Outlet Number Table

Provided to assist responders in identifying cylinder contents. All information should be verified.

Do not use to determine proper/safe connections, consult CGA v1 standard.

CGA number assignment change over-time. Information may not be accurate for older cylinders. Errors or illicit operations can result in cylinders using the wrong valve or containing a different product.

Chart updated 2024.

CGA #	Common Gases	Common Pressures
CGA 160	Phosgene
CGA 200	Acetylene
CGA 240	Ammonia
CGA 290	Vinyl Bromide, Vinyl Chloride, Vinyl Methyl Ether
CGA 300	Acetylene, Ethyl Chloride
CGA 320	Carbon Dioxide (R744)	0-3000 psi
CGA 320	Methyl Flouride
CGA 326	Nitrous Oxide	0-3,000 psi
CGA 330	Boron Trifluoride, Hydrogen Bromide, Hydrogen Chloride, Hydrogen Sulfide, Methyl Bromide, Methyl Mercaptan, Uranium Hexafluoride, Various Gases and Fluoride mixtures
CGA 415	Acetylene
CGA 510	Acetylene, Natural Gas, Propane, Propylene, Allene, Bromotrifluoroethylene, 1,3-Butadiene, Butane, Ethylene Oxide, Ethyl Ether, Isobutane, Isobutylene, Methane, Methyl Chloride, Methyl Ethyl Ether, Silane, Vinyl Bromide, Vinyl Chloride, Various halogenated hydrocarbon gases their isomers
CGA 540	Oxygen	0 - 3,000 psi
CGA 555	Liquid withdrawl of Butane and Propane
CGA 577	Oxygen	3,001 - 4,000 psi
CGA 580	Argon, Helium, Nitrogen, Krypton, Neon, Tetra Fluoro Methane, Xenon	0 - 3,000 psi
CGA 590	Sulfur Hexaflouride
CGA 660	Chlorine, Sulfur Dioxide, Ammonia,1,2 Dichloroethylene (R1130), Carbonyl Flouride, Various Freons	Fusible plug 165F
CGA 668	1,2 Dibromodiflouromethane
CGA 679	Flourine
CGA 670	Bromine Pentafluoride, Bromine Trifluoride, Chlorine Pentafluoride, Chlorine Trifluoride, Deuterium Fluoride, Hydrogen Fluoride, Iodine Pentafluoride, Nitrogen Trifluoride, Perchloryl Fluoride, Tungsten Hexafluoride
CGA 677	Argon, Helium, Nitrogen, Xenon	5,501 psi to 7,500 psi
CGA 679	Fluorine
CGA 680	Argon, Helium, Nitrogen, Xenon	3,001 - 5,500 psi
CGA 695	Carbon Monoxide, Hydrogen, Natural Gas, Methane (R50)	3,001 - 5,500 psi
CGA 701	Oxygen	4,001 - 5,500 psi
CGA 702	Air	3,001 - 5,000 psi
CGA 703	Carbon Monoxide, Hydrogen, Natural Gas, Methane (R50)	5,501 - 7,500 psi
CGA 705	Ammonia, Various Amines
CGA 750	Carbonyl Flouride
CGA 792	Liquid withdrawl of Helium and Neon
CGA 870	Medical Oxygen	0 - 3,000 psi
CGA 880	Oxygen/Carbon Dioxide Mix	0 - 3,000 psi
CGA 890	Medical Oxygen/Helium Mix	0 - 3,000 psi
CGA 900	Ethylene
CGA 910	Medical Nitrous Oxide	0 - 3,000 psi
CGA 920	Cyclopropane	1 - 3,000 psi (2015 psi rupture disk)
CGA 930	Medical Helium	0 psi to 3,000 psi
CGA 940	Medical Carbon Dioxide	0 - 3,000 psi (2015 psi rupture disk)
CGA 950	Medical Air	0 - 3,000 psi
CGA 960	Medical Nitrogen	0 - 3,000 psi
CGA 973	Medical Special Mix	0 - 3,000 psi

Information is for education and reference. User must verify all information is accurate.