A Self-Contained Breathing Apparatus (SCBA) is a personal respiratory protection device that supplies clean, breathable air from an independent source. It is designed for use in hazardous, oxygen-deficient, or smoke-filled environments where the surrounding air is unsafe to breathe. SCBAs are commonly used by firefighters, seafarers, rescue teams, and industrial workers to ensure safe breathing during emergencies such as fires, chemical leaks, or confined space operations.

Main Parts of SCBA and Their Functions

‣Gas Cylinder
Stores compressed breathable air that supplies the user during operation.

‣Full Face Mask
Covers the entire face and delivers clean air while protecting the eyes and respiratory system from smoke, toxic gases, and particles.

‣Air Supply Valve
Regulates and controls the flow of air from the cylinder to the face mask.

‣Quick Connector
Allows fast and secure connection between the air hose and mask for easy donning and removal.

‣Shoulder Straps
Support the SCBA unit and distribute weight evenly for user comfort.

‣Gas Bottle Fixing Strap
Secures the gas cylinder firmly to the backplate to prevent movement.

‣Reflective Strips
Improve visibility of the wearer in low-light or smoke-filled conditions.

‣Air Source Pressure Gauge
Displays the remaining air pressure inside the cylinder, helping users monitor air supply.

‣Gas Bottle Switch
Controls the opening and closing of the air supply from the cylinder.

‣Backplane
Provides structural support for the SCBA assembly and rests against the user’s back.