Which safety system is used for small cylinders to prevent misconnections?

The Pin-Index Safety System is specifically designed for small gas cylinders, particularly those used in medical settings, to prevent the risk of misconnections. This safety system utilizes a series of pins or holes that align with corresponding pins on the regulator to ensure that only the correct type of gas cylinder can be connected to its appropriate regulator.

The arrangement of the pins is unique for different gases, which helps prevent the dangerous possibility of connecting a regulator meant for one type of gas to a cylinder containing another type. For instance, oxygen and nitrous oxide cylinders have distinct pin configurations, further enhancing safety in the healthcare environment where various gases are used.

This system is critical in maintaining the integrity and safety of medical gas use, as proper connection ensures that the right gas is delivered to patients without risk of contamination or misadministration. The other systems mentioned, while important for gas safety, serve different functions or apply to larger systems rather than specifically addressing the small cylinder connection challenge.