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2.2.4.5 ACGO Assembly
The above picture shows the ACGO assembly. The ACGO assembly includes flow restrictor 21,
pressure relief valve 31, and pressure relief valve 55. Inputted O2 and fresh gas are mixed and
enter the ACGO. Pressure relief valve 31 at the front restricts the pressure of inputed O2 and also
that of the fresh gas not to exceed 37.9 kPa. Pressure relief valve 55 at the back ensures that the
pressure of the gas outputted to the ACGO does not exceed 12.5 kPa. Flushing O2 and fresh gas
are mixed through the three-way valve and enter the ACGO. The outputs include fresh gas
provided for the breathing system (when ACGO is turned off) and that provided for the patient
(when ACGO is turned on). Pressure relief valve 31 at the front restricts the pressure of flushing
O2 and also that of the fresh gas not to exceed 38 kPa (approximate value). Pressure relief valve
55 at the back ensures that the pressure of the gas outputted to the ACGO does not exceed 12.5
kPa.
2.2.4.6 O2 Flush Button Assembly
O2 inlet
Enter breathing
system
ACGO outlet
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