The valve is characterized by: its thick wall thickness, and uneven, irregular shape; rough surface; thermal inertia, slow heating; handling of the collision between the situation is serious. For these characteristics of the valve. And the use of general powder coating spray valve often appear some various problems, my company after some material selection and experiment, developed a special valve powder coating. Special powder coatings for valves not only have the decorative aesthetics of general powder coatings, but also have the following outstanding characteristics: