Medical Gas Professional Healthcare Organization

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Vacuum Exhaust Piping

  • Monday, February 19, 2018 12:55 PM
    Message # 5745188
    Steve Bradshaw (Administrator)

    Vacuum exhaust piping (from the pump to the point that it discharges) is permitted to be made of copper or stainless, but is it required to be installed using copper or stainless?  Is black iron, galvanized, or anything recommended by the manufacturer permitted? -  Vacuum exhaust piping shall be permitted to be made of materials and use a joining technique as permitted under and -  Piping Materials for Field-Installed Medical-Surgical Vacuum and WAGD Systems -  Joints Medical–surgical vacuum sources shall consist of the following:

    (5) Piping between the vacuum pump(s), discharge(s), receiver( s), and vacuum source shutoff valve in accordance with, except brass, galvanized, or black steel pipe, which is permitted to be used as recommended by the manufacturer

    (6) Except as defined in through (5), materials and devices used between the medical vacuum exhaust and the medical vacuum source that are permitted to be of any design or construction appropriate for the service as determined by the manufacturer 

  • Monday, February 19, 2018 9:21 PM
    Reply # 5745939 on 5745188


    The use of the word "permitted" may be intentional, but makes this confusing.

    The answer may be found in the joining technique. The methods for joining the exhaust material would limit the installer to specific materials.

    The 2012 code does not have this "permitted" reference.

    Bob Kroening (firebob1)

  • Tuesday, February 20, 2018 7:46 AM
    Reply # 5759795 on 5745188
    Al Moon (Administrator)

    Yes Clear As Mud Again.


    NFPA 99 in my opinion only.

    Is a field installation document.

    The manufacture can use any material they like.

    But the patient distribution and the exhaust or intake piping system .

    Shall be per the book and each section it relates to.

  • Thursday, January 24, 2019 9:38 AM
    Reply # 7127062 on 5745188

    Is this cool then? Manufacturer has no comment :) 

    1 file
  • Friday, January 25, 2019 11:02 AM
    Reply # 7129071 on 5745188

     Agree with Al cannot see photo well enough. 

  • Saturday, January 26, 2019 9:54 AM
    Reply # 7130592 on 5745188
    Al Moon (Administrator)

    My statement ( clear as mud was from Feb 12, 2018 )

    The picture is clear - the exhaust posted is PVC.

    On a medical vacuum pump that was modified.

16339 Kranker Drive, Stilwell, KS 66085