
19
BAG TEE
The Bag Tee assembly features a Non-rebreathing Valve and an Emergency Air Intake located on
the Bag Tee, which comply with American Dental Association guidelines. The non-rebreathing valve
has a back flow check valve, which prevents exhaled gases from entering the breathing bag (no
carbon dioxide buildup). The emergency air intake has a valve that allows room air to be inhaled
into the breathing circuit by the patient. A breathing bag is attached to the metal portion of the Bag
Tee and is a reservoir bag for the delivered analgesia gases, which when taken together with the
two valves above, becomes the visual barometer for monitoring the patient’s respiration rate. The
bag moves in and out with each inhalation and exhalation.
Bag Tee Installation to Flowmeter: Screw knurled seal down tight onto flowmeter making sure the
rubber washer is inside the seal nut. When tight, the bag tee should not rotate.
Note:
Fit mask to patient so inner mask is pulled down tight secure to the face. Outer mask should
not be against the face. Vacuum needs to be drawn into outer mask during inhalation.
Non-Rebreathing Valve—Check Monthly
Place the On / Standby switch in the STANDBY (Off) position. Disconnect the corrugated rubber
tubing from the Rubber Goods and breathe into the corrugated tubing connected to the bag tee.
You should not be able to fill the bag with exhalation gas. If the bag fills, the system’s Non-
Rebreathing Valve is not functioning properly and should be replaced.
Emergency Air Valve—Check Monthly
Place the On / Standby switch in the STANDBY (Off) position. Disconnect the corrugated rubber
tubing from the gas scavenging apparatus and draw air with your mouth through the corrugated
tubing connected to the bag tee. You should be able to draw ambient air through the Emergency
Air Valve (the gas bag may have to fully collapse first). Air going through the valve sounds
different than normal gas flow.
Emergency
Air
Intake
Non-Rebreathing
Valve