Medical Gas Professional Healthcare Organization

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Zone valve location in a ward

  • Wednesday, August 08, 2018 12:21 PM
    Message # 6422926

    One of my customers in the Caribbean supplies a facility that uses wards as opposed to patient rooms. When you came through the doors to the ward you have a short hall, the nurses station, and then the open bed area consisting of 21 beds. The area alarm and zone valve box is located directly across from the nurses station in the ward hall. There is no way to install a wall between the zone valve box and the first wall outlet that is about 20' away. Since the codes appear to be written for facilities that use patient rooms does anyone have thoughts on what a facility using wards can do?  

  • Thursday, August 09, 2018 6:40 AM
    Reply # 6430077 on 6422926

    Put the zone valve outside of those doors. Leave the alarm by the nurse’s station. Think of the ward as a big PACU with only curtains separating the patients. 

  • Thursday, August 09, 2018 7:02 AM
    Reply # 6430365 on 6422926
    Al Moon (Administrator)

    Chris is on the right track, and without spending a lot of time doing a cut and paste from NFPA 99 Chapter 5:

    There are 4 basic requirements of where the zone valve box are to be located.

    #1 is to have an intervening wall between the zone valve box and the outlets

    ( NFPA 99 has a picture of this in the book - personally I’m not a big fan of it ).

    #2 is for the zone valve box to be in the Corridor.

    #3 fairly new to NFPA 99 - The zone valve box can not be in the same room as the outlets.

    #4 if the zone valve box services-controls an anesthetizing location, it is to be immediately outside that location / space.


    I was providing this information via voice to text sorry / if the format is a little strange.

    Last modified: Sunday, August 12, 2018 8:24 AM | Al Moon (Administrator)
  • Friday, August 10, 2018 7:20 AM
    Reply # 6458348 on 6422926

    So a zone valve box can be located outside the ward in the hallway accessible by the general public?

  • Friday, August 10, 2018 7:30 AM
    Reply # 6458553 on 6422926
    Cary Darden (Administrator)

    That is correct Bob.  Zone Valves do not have any special security requirements that I know of within NFPA 99.  If they are serving a special use area such as a psych ward or prison it's a bit different, but for normal patient use it is common to see these in hallways that family members of patients walk by every day.

  • Saturday, August 11, 2018 8:49 AM
    Reply # 6489610 on 6422926
    Mathis Carlson (Administrator)

    I have worked with/in a few Caribbean hospitals that are set up this way with wards. We have always done as Chris suggested, place the zone valve in the main corridor and the alarm at the nurse station.

  • Sunday, August 12, 2018 12:48 PM
    Reply # 6523877 on 6422926

    Thanks everyone for your helpful comments. I will advise my customer so that they can advise their customer. I love this organization and the forum!

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