Function This air filter regulator eliminates solid particles and condensates from compressed air and prepares the air properly for many types of tools and compressed air equipment. Construction and materials Made of aluminum for durability; includes an air dehydrating dryer and a water separator; 1/2 inch air regulator with water separator. Pressure control Features an adjustable pressure control button. Pull and turn the black button on of the regulator to set the desired pressure for precise operation. Performance and protection Removes moisture and particulates, delivering clean, dry air. Includes a humidity trap to protect downstream tools and equipment and improve reliability of the air supply. Compatibility and size 1/2 inch connection suitable for a wide range of compressed air devices and equipment. Use scenarios 1) In a spray painting setup to maintain consistent atomization by supplying dry, clean air. 2) In an automotive workshop with spray guns and pneumatic tools to reduce moisturerelated issues. 3) In a woodworking or general workshop to protect air tools from moisture and contaminants and extend tool life. Why choose this product Robust aluminum construction with an integrated water separator and humidity trap, plus a simple, precise pressure adjustment, designed to reliably prepare compressed air for many tools and systems.