Zone Valve Box Location

  • Thursday, December 06, 2018 11:48 AM
    Message # 6948643
    Al Moon (Administrator)

    We have TWO medical gas and vacuum zone valve boxes for a PACU / RECOVERY area, both are located within the department area.

    All the patient spaces (i.e. the rooms with the patient bed) are supplied with a sliding glass door.

    One zone valve box is located in the wall outside the patient room, to the left of the sliding glass door.

    The second zone valve box is located in the wall outside the patient room straight across from the sliding glass door.

    So, are glass doors a code problem. ?

    Last modified: Tuesday, January 01, 2019 1:52 PM | Anonymous
  • Wednesday, December 19, 2018 1:29 AM
    Reply # 6965873 on 6948643

    I guess the question is what is the fire rating of the glass door and does it have a fire rating label of 1hour? If it does, I would have to say it meets the wall intervening requirements of a zone valve.

  • Wednesday, December 19, 2018 3:14 PM
    Reply # 6966861 on 6948643
    Al Moon (Administrator)

    The one hour fire rating for doors, walls, ceilings, windows, glass items in regards to the zone valve boxes required per NFPA 99 Code, is listed in what code section of NFPA 99 (2012 Edition)?

  • Thursday, December 20, 2018 8:04 PM
    Reply # 6968555 on 6948643

    I see where you are going with this. The 1 hour fire resistance rating only pertains to central supply system or storage locations. A wall relative to a Zone Valve is ambiguous in NFPA 99. 

    Going back to your original comment, if the glass requirements satisfy NFPA 101, it would pass unless you have reason to believe it is a safety risk.

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