Hi Al

As far as I know, this use or characteristics for Station outlets still the same on 2012-2015 and 2018 versions

NFPA 99-2018

3.3.162 Semipermanent Connection. A noninterchangeable connection, usually a D.I.S.S. connector, which is the termination of the pipeline and that is intended to be detached only for service. It is not the point at which the user makes connections or disconnections. (PIP)

If we see this paragraph on definitions, all the station outlets were the medical staff make connections and disconnection should be quick connector station outlets, and mostly of the hospitals have this configuration for the outlets, quick connection for the ones on the wall and DISS for the ones on the ceiling , however this not stablish any were on the code.

What it is said on the code is that the outlets that work above 80 psi should be D.I.S.S

5.1.5.15 Station outlets in systems having nonstandard operating pressures shall meet the following additional requirements:

 (3) If operated at a pressure in excess of 550 kPa (80 psi), they shall be either D.I.S.S. connectors or comply with 5.1.5.15(4).

The only requirement for these DISS outlets that will work at a pressure of 83 psi is the one regarding the nonstandard pressure labeling.

5.1.11.3.2 Where medical gas systems operate at pressures other than the standard gauge pressure of 345 kPa to 380 kPa (50 psi to 55 psi) or a gauge pressure of 1100 kPa to 1275 kPa (160 psi to 185 psi) for nitrogen, the station outlet identification shall include the nonstandard operating pressure in addition to the name of the gas.

Therefore, I believe that the old 53-psi station outlets one and the new ones with the nonstandard pressure labeling on them meet the code  

 Example: What is the difference between a DISS medical Air and a DISS dental air? 

In my opinion, the 6030 must put this on the report as a deficiency.  The Instrument Air terminal unit is intended for use on an instrument air system as defined under NFPA 99, and it should not be used with just any pipeline / source. 

So, I would argue that the use of the Instrument Air terminal outlet attracts the other requirements, and if that does not suit the facility they should use a non-specific terminal (e.g. a gas turret) or the like, with a distinct designation - "equipment air", "scope air", "non medical air", etc. and should look to the general purpose air requirements in Chapter 8.3.5. 

That is of course only an opinon, and I hasten to confess that this is not black and white in the standard.