prEN ISO 18082

ISO 18082:2014 specifies the dimensions, the allocation and marking of non-interchangeable screw-threaded (NIST) connectors intended to be used at operating pressures up to 1 400 kPa, and for vacuum systems at pressures not greater than 60 kPa absolute.
ISO 18082:2014 specifies NIST connectors intended for use with the following medical gases:
— oxygen;
— nitrous oxide;
— medical air;
— helium;
— carbon dioxide;
— xenon;
— specified mixtures of the gases listed above;
— oxygen-enriched air;
— air for driving surgical tools;
— nitrogen for driving surgical tools;
use with vacuum.