7 Performance Test
30 SA-103-0109V1.3-HAO-GB © F. Stephan GmbH
Simulate a ventilation
During the inspiration phase , the valve disc of the inspiration valve is
lifted by the gas flow and simultaneously, the valve disc of the
expiration valve is depressed.
During the expiration phase, the valve disc is lifted and the
inspiration valve remains closed.
If the valves do not react in this way, the cause must be determined
and eliminated.
Sticky valve disc
Missing valve disc
Damaged sealing edges of the respective valve
Possible causes
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