2-8
When system switch 22 is turned on, Air enters flow regulator 26. O2 is divided into two
pathways. One pathway of O2 flows into flow regulator 26 and the other into O2-N2O
cut-off valve 25. If the pressure of O2 vented into O2-N2O cut-off valve 25 is greater than
0.1 MPa, N2O can enter flow regulator 26, as shown below.
N2O tube
Air tube
O2 tube
笑
26. Flow regulator
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