The Binks Magic Flow is a plural component paint dosing system designed to improve a finishing operation. Suitable for 2-component coatings such as epoxies or urethanes, the system can handle up to 28 colors in its color valve stack and changes color quickly. By dosing and mixing coating material as the sprayer needs it, the system reduces wasted coating and waste due to rejected parts while decreasing exposure to hazardous material. It also eases regulatory compliance with its built-in VOC calculation and reporting capability, and doses and mixes paint just as the sprayer needs it, reducing coating waste. Features include a flowmeter-based dosing system for better, more consistent volumetric ratio of components; easy-to-use ratio check manifold; computer controlled and stored “recipes” and “flush programs” for ease of use; and lockout features that limit program access to those qualified to program.