The Reactor A-XP1 is a Graco-engineered proportioner designed to process and spray coatings that require high pressures and gives you the reliability you expect on the jobsite. It maintains consistent temperature control, even when you're spraying at maximum flow rates - resulting in better quality coatings. The Graco A-Series provides excellent value for residential and commercial use. Have peace of mind with the proven durability of a standard Graco quality air motor.