Description from the source: > Valve uses Venturi effect to generate underpressure in a tube consisting of three parts - a convergent section (nozzle), followed by constant section (throat), ending in a gradual expansion (diffuser). Due to the oxygen flow underpressure is generated in the nozzle and air is beeing sucked into valve. Valve is powered with a stream of pure oxygen with the flow rate 10-20 lpm. Two streams are mixing in diffuser: oxygen (100% O2) + air (21% O2) resulting in high flow, high oxygen stream at the outlet. > > Oxygen connection: 5-6mm hose > Aparature connection: ISO 5356 22M > > Rev. 5 FiO2 / flow: > - 40 % / 60 lpm (nominal, can be regulated by o2 streams) > > Rev. 4 FiO2 / flow: > - 40 % / 42 lpm > - 37 % / 50 lpm > - 34 % / 59 lpm > - 30 % / 86 lpm > - 28 % / 120 lpm Created by: Filip Kober Source: https://grabcad.com/library/respirator-free-reanimation-venturi-s-valve-1 Follow the recommendations of your health officials. Use at your own risk.

Created by: https://www.thingiverse.com/3DWatsch/about Source: https://www.thingiverse.com/thing:4264933 Follow the recommendations of your health officials. Use at your own risk.