High Quality Material: The air filter regulator is made of high quality aluminum+PC+plastic, which is rust-proof, corrosion-resistant, strong and durable. Air Filtration: The structure is compact and combines the functions of an air filter and a regulator. Filters moisture and fine particles for clean, dry air that prevents damage to air tools, spray guns and pneumatic equipment. Easy to use: The pressure gauge is more accurate for pressure sensing, and the casing is corrosion-resistant. The dial scale has two units of measurement for easy control and reading. Pressure Regulator: With the adjustable pressure control knob, you can pull up and turn the black knob on the top of the regulator to set the desired pressure. Always maintain a stable outlet pressure regardless of inlet pressure and flow fluctuations. Stable Performance: The internal diaphragm design smoothes and regulates airflow, thereby minimizing the negative effects of air pulsations and pressure imbalances created by piston compressors.