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Cylinder Valves
Evergreen Midwest carries a wide selection of cylinder valves, sourced from industry-leading and American-based manufacturers for all major gas service applications. Our cylinder valve inventory includes common CGA connections and trusted valve designs for welding, beverage, laboratory, industrial, and medical applications.
Cylinder Valves by CGA and Gas Service Usage
| CGA | Gas Service / Application | Pressure | CGA Outlet |
|---|---|---|---|
| 320 | Carbon Dioxide (CO2) | 0–3,000 PSI | .825-14 NGO RH Ext. |
| 540 | Oxygen (O2) | 0–3,000 PSI | .903-14 NGO RH Ext. |
| 580 | Nitrogen / Argon / Helium / Krypton / Neon / Xenon | 0–3,000 PSI | .965-14 NGO RH Int. |
| 590 | Sulfur Hexafluoride (SF6) | 0–3,000 PSI | .965-14 NGO LH Int. |
| 677 | Ultra-High-Pressure Inert Gases | 4,701–6,400 PSI | 1.030-14 NGO LH Ext. |
| 300 | Acetylene – Large Cylinder | 500 PSI Max | .825-14 NGO RH Ext. |
| 326 | Nitrous Oxide (N2O) | 0–3,000 PSI | .825-14 NGO RH Ext. |
| 346 | Compressed Air | 0–3,000 PSI | .825-14 NGO RH Ext. |
| 347 | High-Pressure Air | 3,001–4,700 PSI | .825-14 NGO RH Ext. |
| 350 | Hydrogen / Carbon Monoxide | 0–3,000 PSI | .825-14 NGO LH Ext. |
| 510 | Acetylene – POL / Large Cylinder | 500 PSI Max | .885-14 NGO LH Int. |
| 520 | Acetylene – B Cylinder Service | 500 PSI Max | .895-18 NGO RH Ext. |
| 660 | Chlorine / Refrigerant / Corrosive Gas | 500 PSI Max | CGA 660 |
| 680 | High-Pressure Inert Gases | 3,001–4,700 PSI | 1.045-14 NGO RH Int. |
| 695 | High-Pressure Hydrogen / Carbon Monoxide | 3,001–4,700 PSI | 1.045-14 NGO LH Int. |
| 701 | High-Pressure Oxygen | 3,501–4,700 PSI | 1.103-14 NGO RH Ext. |
| 702 | Ultra-High-Pressure Air | 4,701–6,400 PSI | 1.125-14 NGO RH Int. |
| 703 | Ultra-High-Pressure Hydrogen / Carbon Monoxide | 4,701–6,400 PSI | 1.125-14 NGO LH Int. |
| 705 | Anhydrous Ammonia / Specialty Ammonia | Up to 3,000 PSI | CGA 705 |
| 820 | Chlorine – Yoke Connection | 500 PSI Max | CGA 820 Yoke |
| 870 | Medical Oxygen | 3,000 PSI Max | Pin Index #2 & #5 |
| 910 | Medical Nitrous Oxide | 3,000 PSI Max | Pin Index #3 & #5 |
| 930 | Medical Helium | 3,000 PSI Max | Pin Index #4 & #6 |
| 940 | Medical Carbon Dioxide | 3,000 PSI Max | Pin Index #1 & #6 |
| 950 | Medical Air | 3,000 PSI Max | Pin Index #1 & #5 |
| 960 | Medical Nitrogen | 3,000 PSI Max | Pin Index #1 & #4 |
