Medical Gas Professional Healthcare Organization

Leading through education, we save lives

Drager V500 ventilator air requirements

  • Wednesday, August 23, 2017 10:29 AM
    Message # 5043952

    Working on a project that will have four Drager V500 running at the same time.  Need to know the air requirements.  Only thing I can find on-line is sites abroad that want a credit card to proceed.

  • Wednesday, August 23, 2017 2:44 PM
    Reply # 5044437 on 5043952

    Found this:

    Oxygen Gauge Pressure 39 to 87 psi

    Medical Air Gauge Pressure 39 to 87 psi)

    Inspiratory flow (BTPS) max. 180 L/min

  • Friday, November 10, 2017 5:30 PM
    Reply # 5581011 on 5043952

    Chris, Coming in a bit late on this. The BTPS stated for the flow requirement  is a pulmonary physiology term expressing gas conditions within the body. If it is  intended to state vent inlet flow requirements it is not an appropriate way to express it.


    BTPS means Body Temperature (37°C) and Pressure (760mm Hg [mercury], Saturated (water vapor pressure fully saturated at 37°C [PH20 47 mmHg]) and is an important calculation in Pulmonary Function Testing and other pulmonary work.


    If the inlet flow were expressed in physiological terms (inappropriate in this context) it would be ATPD, meaning Ambient Temperature (generally assumed 20°C, if not otherwise indicated), and Pressure (760mmHg), Dry (PH20 0 mmHg [pressure]).  


    For med gas purposes the difference between the two terms is not significant, and could be better stated that the peak inlet flow requirement is 180 L/M (at ambient pressure or 14.7 psia in our terminology).  See here  for similar vent flow usage previously discussed.  End Respiratory Physiology 101 :- )


    Last modified: Friday, November 10, 2017 7:57 PM | George Scott
  • Saturday, November 11, 2017 7:35 AM
    Reply # 5581327 on 5043952

    Missed you, George!

  • Saturday, November 11, 2017 8:03 AM
    Reply # 5581336 on 5043952 still alive? I miss you. For those who are not a licensed respiratory therapist, but rely on the smart guys to tell us what the patient needs, I convert the 180 lpm to 6.3 scfm, x 4 units equals 25.2 scfm total demand, or about two 5HP scroll air compressors (1.71 units, based on 14.7 SCFM /compressor). I hope this helps Chris.

    Scott Jussel 

16339 Kranker Drive, Stilwell, KS 66085