#$%^&*AU2017228665A120171005.pdf#####DOCKET 1652-4 PCT AU DIV 11 (600.1016-AU-11) ABSTRACT An air/water valve assembly comprising: a main stem having a proximal end comprising a button head, the main stem being a single piece and comprising a plurality of ridges and grooves disposed circumferentially about the main stem, the plurality of ridges and grooves being monolithic with the main stem and the main stem comprising an opening disposed at the proximal end and running along a longitudinal axis of the main stem, the opening configured to allow passage of air and/or fluid through at least a portion of the main stem； a plurality of seals disposed in the plurality of grooves disposed circumferentially about the main stem； a retainer ring contacting and disposed around the main stem； a button head contacting the proximal end of the main stem； a resilient member contacting the retainer ring and the button head； wherein application of a downward force to the button head causes the main stem to move in a downward position. 20WO 2012/075131 PCT/US2011/062628 800 -805 PROCESSOR AIR OUT+ (TO PATIENT) 810 PROCESSOR AIR ON AIR IN 825 HOLD 81 WATER WATER OUT FLOWING (TO PATIENT) WATER IN--82 FIGURE 8B 8/9
