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

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 346~~
~~Air - Breathing (R729)~~
~~0 - 3,000 psi~~ ~~CGA 347~~
~~Air (R729)~~ ~~3,001 - 5,000 psi~~ ~~CGA 350~~ ~~Carbon Monoxide, Hydrogen, Arsine, Germane, Methane (R50), Methyl Fluoride,~~ ~~Natural Gas, Phosphine, Silane, Vinyl Fluoride, various semi-conductor gases~~ ~~0 - 3,000 psi~~
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.