Build Rev 2Adjusting the pressure relief valves
Pressure relief valves must be placed on every patient ventilator port to prevent high pressure air/oxygen flow from harming any patient’s lungs. The valves we used are mechanically actuated (ball and spring) and have an operating range of 0 to 20 psi. Based on ER physician input, we adjusted them to open and vent at 40-45cm H2O (about 0.6 psi). Depending on patient lung compliance and other factors, some ports may need to be set lower. This section shows how to adjust them.
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