Which system is used to prevent accidental interchanging of low pressure gas tanks?

The system used to prevent accidental interchanging of low-pressure gas tanks is the DISS, or Diameter Indexed Safety System. This system is designed specifically for medical gas connections, ensuring that only the correct gas can be connected to the appropriate outlet. Each type of medical gas is assigned a specific size and shape of fitting, which corresponds to the diameter of the outlet. As a result, even if tanks are similar in appearance or use, the DISS prevents the risk of connecting the wrong gas to a medical device.

This safety feature is crucial in medical environments where the correct administration of gases is vital for patient safety. Unlike other systems that may still allow for potential confusion or errors, the DISS system's unique fittings create a physical barrier to misconnection, ensuring a safer and more reliable gas storage and delivery system.