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Preparing to Spray
Using the Right Tip for the Job
Consider the coating and the surface to be sprayed.
Make sure you use the best tip hole size for that coating
and the best fan width for that surface.
Tip Hole Size
Tip hole size controls the flow rate — the amount of
paint that comes out of the gun.
HINTS:
D
Generally, use larger tip hole sizes with thicker
coatings and smaller tip hole sizes with thinner
coatings.
D The maximum tip hole size that a sprayer can
support is related to its maximum flow rate. The
maximum tip hole size that each MAGNUM sprayer
supports is as follows:
– XR5: New 0.015 in. (0.38 mm)
– XR7: New 0.017 in. (0.43 mm)
– XR9: New 0.019 in. (0.48 mm)
D Tips wear with use and need periodic replacement.
Fan Width
Fan width is the size of the spray pattern, which
determines the area covered with each stroke. For a
given tip hole size, narrower fans deliver a thicker coat,
and wider fans deliver a thinner coat.
HINTS:
D
Select a fan width best suited for the surface being
sprayed.
D Wider fans allow for faster coverage on broad, open
surfaces.
D Narrower fans allow for better control on small,
confined surfaces.
Understanding the Tip Number
The last three digits of the tip number (example:
RST413) contain information about the hole size and
about the fan width on the surface when the gun is held
12 in. (30.5 cm) from the surface being sprayed.
First digit when doubled
= approximate
fan width.
Last two digits = tip hole size
in thousands of an inch.
413 tip has a
0.013 in. hole size
413 tip has 8 to 10 in.
fan width
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