1)Filter: This component removes moisture and impurities from the airflow.

2)Regulator: This is used to regulate the pressure of the cylinder's output.

3)Lubricator: This supplies oil to lubricate the solenoid valve and cylinder.

4)Air pressure meter: This measures and controls the correct pneumatic pressure output.

Each of these parts has a different function. A malfunction in any of them will affect wear and damages to the welding parts, and consequently impact welding quality.