Airless Spray Tips
A key component to the successful operation of an airless spray system. They define the spray pattern, control the
flow, atomize the coating and ultimately tell the pump how hard it
must work. A proper understanding of airless tips is critical to the
success of any airless application.
It is important to remember that the orifice size, in conjunction with
the fan-width, determines the spray characteristics of the tip.
When beginning a project, choosing the right tip size and fan width
will determine both coating consumption and production time. If
the tip size is wrong — either by choice or through wear — mil
thicknesses will be too heavy and the finish will be unprofessional.
The spray pattern chart demonstrates what happens as a tip wears.
As wear occurs, the pattern size decreases and the orifice size
increases. You will have to make more passes to cover the same
area. There is no standard rate of tip wear due to the variation of
the abrasiveness of all coatings.
While Drake’s supplies the highest grade spray tips - all tips will wear with normal use. Using a worn tip can cost you hundreds of dollars in wasted paint and labor; because when a tip wears the size of the orifice increase and the fan width decreases.
|Orifice size - inches (thousandths)|
|Flow Rate (gpm)||0.34||0.45||0.68||0.91||1.17|