Pipe / Valve / Zone Gas Labels and exact wording

  • Thursday, October 26, 2017 12:00 PM
    Message # 5367174
    Cary Darden (Administrator)

    At least one manufacturer that I know of ships zone valves with the individual valve labels that read "Air" for medical air and "Vacuum" or "Vac" for Medical Vacuum.  

    Table 5.1.11 (I reviewed the 2012, 2015 & 2018 edition, all read the same) gives two names for each of these:

    • Medical air or Med air
    • Medical-surgical vacuum or Med vac

    I am curious as to what the consensus of the group here is on how you would treat this during verification (or an annual).  Do you bring this up as a deficiency since TJC / DNV / CMS / HFAP are all obsessed with the exact wording in NFPA 99 now?

    This also exists on pipe labels, many times I see pipes labeled with simply "Air" or "Vacuum"

  • Thursday, October 26, 2017 6:50 PM
    Reply # 5376060 on 5367174

    I would say it would need to be noted since the requirement is that it has the chemical symbol for the specific gas or vacuum system.


    Medical Air/Med Air  


    Medical-Surgical Vacuum/Med Vac 

    Last modified: Thursday, October 26, 2017 6:51 PM | Anonymous
  • Thursday, October 26, 2017 7:56 PM
    Reply # 5377676 on 5367174
    Al Moon (Administrator)



    O2 or Oxygen



  • Thursday, October 26, 2017 9:05 PM
    Reply # 5379479 on 5367174



    It would have to be Oxygen or O2, the abbreviation.

  • Friday, October 27, 2017 9:13 AM
    Reply # 5388181 on 5367174

    We just completed a job where the differences among the types of air was quite relevant.  There were a few different air systems in the facility that the AHJ were hell-bent on being labeled a specific way, and I can't blame them.  They needed to be clearly identified and differentiated in their pipeline and valve labeling .  There was MEDICAL AIR, DENTAL AIR, and INSTRUMENT AIR and all were requested to be labelled exactly so.  We did come across a labeling mix-up with these systems at one point and it created some problems that took a while to resolve during the verification process.  

    Long story short - The AHJ has the ultimate say in what they want to see, so if it's at all possible to get an answer from them on what they will accept for labeling terminology, it's worth asking the question.  

    Last modified: Friday, October 27, 2017 9:21 AM | Kyle Jussel
  • Friday, October 27, 2017 2:47 PM
    Reply # 5396594 on 5367174

     It should be properly labeled per NFPA for a multitude of reasons. 

  • Thursday, November 30, 2017 9:27 AM
    Reply # 5607544 on 5367174

    I do believe that all outlets, valves and pipe should have the appropriate name on them for the med gas they manage, the code is specific on this matter

    For example, in a hospital there may be med air and an another Air piping  (for other use different than medical use), each of them should be label properly, for medical air they should be label as the code specify on 5.1.11, there is no doubt on my mind  

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