Spray Guns

Introduction

Spray Guns are devices shaped like a gun which throw a sprinkle of liquid when some kind of pressure is applied on it. The origin of spray guns can be traced back to “Airbrush” which is a air-operated apparatus, using the process of atomization to spray various types of liquids including water, ink, dye, paint etc. Air brush was invented in the year 1879 by Abner Peeler of U.S.A

Types of spray guns
Spray guns are of various types including suction fed spray guns, gravity fed spay guns, air assisted spray guns, airless spray guns, manual spray guns, high volume spray guns etc. Except the airless gun, most of the spray guns atomize dry or liquid paint to paint a surface.
Velocity and pressure of the spray
The velocity with which the stream of liquid is being delivered is proportional to the pressure being applied. Most of the times spray guns use pressure in the range of 20-35 PSI depending on the application for which it is being used. Some exceptional applications such as Automobile painting requires heavy spray guns using more than 100 PSI pressure. Large amount of pressure is required to sufficiently atomize the spray. This is done by spraying highly viscous liquid.

Use of Spray Guns

• Spray Guns are extensively used in Art and Illustration, cloth painting, photo shopping, automotive painting etc. Commercial artists use spray guns to bring out high level of realism to the pictures and images.


• The spray guns can be used either in combination with cut stencils or without stencils to create a painting, drawing , picture or image.


• Spray Guns are widely used in publishing, advertising , comic books , graphic novels etc and are mainly used by fantasy and science fiction artists.


• Spray guns are used by street artists to create tourist pictures and portraits.


• Spray guns are used to spray pesticides on agricultural field.


• Spray guns are used in car washing industry.


• Apart from above mentioned applications Spray guns are also used in spraying murals, graphics, and other artwork on automobiles, helmets and motorcycles.