Published on Nov 25, 2019
PIN INDEX
Pin Index Safety System (PISS):
- Means of connecting high pressure cylinders containing medical gases to a regulator or other utilization equipment.
- It uses geometric features on the valve and yoke to prevent mistaken use of the wrong gas.
| GAS | PIN INDEX |
| Air | 1,5 |
| Oxygen | 2,5 |
| N2O | 3,5 |
| CO2 (> 7.5%) CO2 (<7.5%) | 1,6 2,6 |
| Entonox | 7 |
| Heliox | 2,4 |