| http://www.w3.org/ns/prov#value | - As this pressure builds, the flexible diaphragm 42 will now be moved circumferentially away from the valve seat 44, thereby permitting the exhaled gases to travel in the direction of the arrows 45 into the outer gas tube 14 and hence, ultimately, into a carbon dioxide absorber or other device connected to the system for accepting exhaled gases.
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