Anesthesia Machine Flowmeter Tube for Anesthesia Machine

                                                                                                                                    
The Flow Head incorporates the following functions:
Gas indexed pneumatic inlet ports
N2O gas flow cut off in the event of oxygen failure
Flow control needle valves
N2O/O2 flow ratio hypoxic mixture prevention proportioning system
Flow tubes accurate to ±10 %of reading. 
Color coded,market specific labels for flow tubes and flow tubes and flow control valves
Gas mixing chamber
Mixed gas outlet
General Operation:
The Flow Head integrates O2, N2O and Air channels (the N2O and Air channels are optional)
The O2 Air and N2O needle valves gas supply pressure is externally regulated to 200Kpa±10Kpa.
The N2O channel incorporates a pressure cut-off valve. The O2 needle valve supply pressure in the circuit controls the output pressure of the pressure cut-off valve. Under all conditions of operation, the N2O flow shall reach zero before the O2 flow. In this flow head the N2O pressure switch shall cut off the flow of N2O before the O2 pressure drops below 50+/-15Kpa.

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