The DeVilbiss 7305 Series Vacu-Aide® Suction Unit meets suction and capacity requirements in a small, lightweight design.High Performance – Vacuum adjustments allow for 80-550 mm Hg and a free flow of 27 LPMAdjustable Flow Regulator – Easy-to-turn knob conveniently placed directly below gauge for easy use and control. Knob has safety lock feature which will not allow the knob to be twisted off.The Vacu-Aide® Suction Unit 7305P series meets the RTCA/DO160D Aircraft Standard as well as the ISO-10079.1:1999 Suction StandardOptional Battery Capabilities – For use up to one hour. Provides the patient with added security when needed mostThe high flow capabilities (27 LPM) of the Vacu-Aide® Suction Unit can return a patient to a state of comfort quickly.Unit can be operated while inside the carrying case