Pressure Regulator; Flow Control Valve - GE Datex-Ohmeda Aisys Carestation Reference Manual

2.13.2 Pressure
regulator
2.13.3 Flow
control valve
M1046983 04/08
The pressure regulator (4) is a non-relieving pressure regulator that regulates high
pressure filtered supply gas down to 172 kPa (25 psi).
4
Figure 2-48 • Pressure regulator
The flow control valve (5) is controlled by the CPU. Signals are sent to the flow control
valve of the necessary flow determined by ventilator settings and sensor signals. The
flow control valve modulates the incoming 172 kPa (25 psi) drive gases to an output
from 0 to 120 liters per minute at pressures ranging from 0 to 100 cm H
5
Figure 2-49 • Flow control valve
2 Theory of Operation
(3.5 cm H2O bias)
Inspiratory Flow
Control Valve
25 psig @
15 LPM
Gas Inlet
Valve
Vent to Ambient
P
O.
2
Vent Engine
Atmosphere
Free Breathing
Check Valve
Popoff
Mechanical Overpressure
Valve
Valve (110 cm H2O)
Drive Gas Check Valve
(3.5 cm H2O bias)
Inspiratory Flow
Control Valve
25 psig @
15 LPM
Gas Inlet
Valve
(2.0 cm
20
C
if
5.4 psi
Exhala
(2.0 c
2-61