Fig. 16. Reducing outfit
The reducing outfit in Fig. 16 consists of a regulative valve, an air gage, and an air filter, complete with connections and fittings. This outfit is for the purpose of maintaining an even low spraying pressure.
Regulated pressure is applied to the air-tight material container, raising the coating material to the nozzle where only sufficient main-line pressure is used to lay the coating on. The spraying pressure necessarily depends on the density, consistency and viscosity of the material used.
For fine finishing work, where the quantity of materials used each day is not great, or where the colors are changed frequently, the attached container type is recommended.
40. Preparing Colors.—The three primary colors are red, blue and yellow. With the three primary colors at hand, almost every variety of color desirable for ordinary use can be easily prepared. Fig. 17 shows a color chart.
Red mixed with yellow will result in orange.
Red mixed with blue will result in purple.
Yellow mixed with blue will result in green.
The colors obtained by mixing any two primaries are called secondary colors. Therefor the secondary colors are orange, purple and green.