Anesthesia Inhalation Valve Test and Repair

The inhalation valve is a simple unidirectional flutter valve with a 22mm male connector. A light thin disc seats horizontally on a circular knife-edge. A removable clear dome covers the top of the valve so that the disc can be observed. A guide, incorporated in the dome, prevents the disc from becoming dislodged.

Gas enters the valve at the bottom and flows through the center of the valve, raising the disc from its knife-edge seat. The gas then passes under the dome and through to the breathing circuit. The inhalation valve opens on inhalation and closes on exhalation.

The inhalation valve opens on inhalation and closes on exhalation.