Nozzles for Coating Applications
Engineering Consideration 3 - Spray volume
Successful coating relies not only on getting a uniform spray pattern but also the right amount of fluid. In many coating applications the actual volume of fluid required is very small. So the flow rates from any nozzles consequentially has to be low. This presents a problem for many direct pressure nozzles as the energy required to break up the fluid into a spray pattern comes directly from the kinetic energy of the fluid itself. This in turn being a direct function of pressure and flow rate.
For many precise coating applications the energy required to form the spray pattern would necessitate a larger flow rate than is required. In situations like these a secondary source of energy must be used to form the spray pattern and the XA range of air atomising nozzles does precisely this. For a further degree of control one might consider the SAM range of air atomising nozzles. These have two independent air inlets - one to control the level of atomisation the other to shape the spray. Information on these nozzles can be found in the "Nozzle Designs" grey menu to the right hand side.