What components make up an SCBA air cylinder assembly?

The air cylinder assembly of a Self-Contained Breathing Apparatus (SCBA) primarily consists of the cylinder, regulator, and pressure gauge. The cylinder serves as the storage for compressed air, allowing firefighters to breathe in hazardous environments. The regulator is crucial as it controls the airflow and reduces the high pressure of the air in the cylinder to a breathable level for the user. Additionally, the pressure gauge provides real-time information about the air supply within the cylinder, allowing the user to monitor how much air is left during operations. Understanding these components is essential for proper use and maintenance of SCBA units in firefighting scenarios.