When used to control the flow of medical gases to a patient, how is a flow restrictor classified?

Name: When used to control the flow of medical gases to a patient, how is a flow restrictor classified?
Brand: Quizplus
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Quizplus · Accepted Answer

A flow restrictor is a fixed-orifice device as the orifice size remains constant. It is also a constant-pressure device as it maintains a consistent pressure downstream of the orifice. Therefore, the correct classification is D, i.e., a fixed-orifice, constant-pressure flowmeter device.

When Used to Control the Flow of Medical Gases to a Patient