3 Components and functions
38 SA-112-0106V1.0-WEM-GB © F. Stephan GmbH
3.5.2 Plateau valve
The plateau valve consists of a valve plate with a spring before the valve
plate which limits the pressure in the patient tube system.
Fig. 33: Plateau valve
1 RLNA valve 2 plateau valve disc
The tension in the spring and thus the maximum pressure is adjusted by
the plateau knob.
The valve plate contains the room air emergency breathing valve.
The silicone disk allows the patient to breathe spontaneously even if the
breathing gas should fail.
The negative pressure to be produced by the patient to open the "RLNA"
valve is approx. – 4 cmH
2
O.
3.5.3 Breathing gas humidifier
Heating and moistening the breathing gas is coordinated by the sensor
board. A temperature sensor in the inspiration fitting and at the end of the
heating section of the inspiration tube provide the actual temperature
value.
RLNA valve
1
2
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