The spray gun is controlled by a trigger. The deeper the trigger is pulled, the greater the liquid flow rate. In the process of traditional gun walking, the trigger of electrostatic spraying equipment is always closed, not half closed. In order to avoid the accumulation of paint sprayed at the end of each gun, experienced painters should slightly loosen the trigger to reduce the paint supply.

The spraying gun shall be vertical to the substrate surface, or as vertical as possible. If the spray gun is a little skewed, the result will inevitably cause the spray band to flow on one side, while the other side will appear thin and lack of paint, which is very likely to cause striped coating.

For the siphon spray gun, the best working interval is 15 ~ 20cm. If the interval is too close, flow may occur, and the color may even be inconsistent with the expected when spraying metal flash paint or pearlescent paint. If the distance is too far. If it exceeds 20cm, it may lead to dry spraying and overspray, resulting in poor leveling of the coating. If the metal flash paint is sprayed, there may also be the possibility of color change. The pressure feeding spray gun can be far away from the substrate. Generally, the best interval is 20 to 30cm. These are the principles that must be followed during spraying construction.