Quick activating valves
| CYLINDER SIZE | CYLINDER I.D. | RED DIP TUBE LENGTH | TYPE NUMBER |
| 10# | 12.0 | 3.6 | OPD10 |
| 20# | 12.0 | 4.0 | OPD20 |
| 30# | 12.0 | 4.8 | OPD30 |
| 40# | 12.0 | 6.5 | OPD40 |
| CYLINDER SIZE | CYLINDER I.D. | RED DIP TUBE LENGTH | TYPE NUMBER |
| 10# | 12.0 | 3.6 | OPD10 |
| 20# | 12.0 | 4.0 | OPD20 |
| 30# | 12.0 | 4.8 | OPD30 |
| 40# | 12.0 | 6.5 | OPD40 |