Filter (AW3000-03): Removes water, oil mist, dust, and solid particles from the compressed air to prevent corrosion and clogging.Regulator: Maintains a stable, adjustable outlet pressure (typically between 0.05–0.85 MPa or 7–123 psi) regardless of fluctuations in the main air supply.Lubricator (AL3000-03): Introduces a controlled fine mist of oil into the air stream to minimize friction and wear in air-powered tools.Pressure Gauge: Provides a real-time visual reading of the regulated air pressure, typically ranging from 0 to 1.0 MPa (0–150 psi).