1, according to the size and quality of the spray gun itself From the viewpoint of reducing the labor intensity of the operator, it is desirable that the spray gun body is light and small, but the amount of paint sprayed and the amount of air is also reduced, the spraying time is increased, the working efficiency is lowered, and it is not suitable for a large number of painting occasions. Spraying small parts or tubular coatings with large spray guns results in a large amount of paint loss. Large-sized spray guns can be used for large-scale flat objects, and small spray guns should be used for those with very uneven bumps. 2, the amount of coating and paint supply The coating dosage is small, the color is changed frequently, and the gravity spray gun is used, but it is not suitable for the upper surface spray; the coating amount is large and the color is replaced more, especially when the spray side is selected, it is convenient to select the tank-type suction spray gun with the capacity below 1L. . If the amount of paint is large and the color is almost constant, continuous operation may be carried out by using a pressure-feeding spray gun and painting the pressurized tank. When the amount of paint is larger, the paint is pumped through the pump and the paint circulation pipe, and the paint can be continuously sprayed without terminating the work. The spray adopts a quick-change joint for easy cleaning and color change. The pressure-feeding spray gun does not have a paint cup or can, and is sprayed up and down, flexible and convenient. 3, nozzle caliber In industrial large-scale production, the coating area per unit time is large, the amount of coating is large, and the nozzle diameter of the selected spray gun is large; when the thickness of the spray paint film is required to be high or when the primer is applied and the appearance quality of the paint film is not high, Use a larger diameter spray gun. In addition, when the viscosity of the selected coating is high, the spray gun with larger diameter should be used, and when the paint with low viscosity or pressure feed is used, the spray gun with smaller diameter should be used. When spraying a topcoat, the spray atomization requirements are high, and a smaller diameter spray gun is also required. Editor in charge: Zhao Hongli Honeycomb Activated Carbon Filter Honeycomb Carbon Filter,Activated Carbon Air Filter,Honeycomb Mask With Carbon Filter,Honeycomb Activated Carbon Filter Dongguan V1 Environmental Technology Co., Ltd. , https://www.v1airpurifier.com