- Identifying Caps
- Cap Compatability, Can & Valve Types
- Spray Patterns
Caps (also know as: nozzles, tips, actuators, etc.) are like a brushes to an artist. They come in
many sizes shapes and colors and can produce a variety of desired line widths, spray effects and
overall output volume. Although most spray paints include a spray nozzle or “cap” it is typical
for painter to remove the “stock cap” and replace it with a more task appropriate one. Using the
wrong cap can be like writing with a dull pencil, resulting in shaky and undesired strokes. It can
also be like trying to paint a house with a q-tip. Using the right caps can give you the sharp,
crisp and accurate lines you are looking for as well as speed up larger tasks.
A quick way to determine the general output volume of a cap without doing a spray test is
to turn the cap upside down and examine the size of the slit at the end if the stem. Large
notches or slits will allow more paint to flow through when pressed and are typically going to be
a fat cap. In contrast thinner or no slits will allow less paint to flow through and are usually
pegged as thin caps. Another way although less effective is to blow through the stem and
determine how much air volume is being projected out of the output hole.
In the case of NY Fats and NY Thins one can simply observe or feel the grooves along the sides of
the cap. The fat caps have larger further spaced grooves along the sides while the NY thins or
outlines have thinner closely spaced grooves.
Consider pressure differences (a higher pressure can has a lot higher and faster output than a
lower pressure can)
See our pressure page for more info Click Here
A. Domestic Caps- "O.G." NY Fat, NY Outline, Rusto fat
Work on most U.S. domestic cans.
B. Euro or German style Cap-
Works on most European cans and some domestic cans.(easier on the finger)
C. Female Caps (assorted types)-
No stem in bottom of the cap (for male valve cans only)
See charts below for details
Line thickness/Spray volume
Will your cap work with your can?
What kind of valve do you have?
a. Male Caps & Female Valves
The cap's stem inserts into the can's valve.
b. Female Caps & Male Valves
The can's stem inserts into the cap.
Fan Tips (Newer Krylon, Dutch Boy etc.)
These types of cans have a specific type of male valve system that will not accept new
caps. We do not recommend trying to do so.
Each cap will have a different colored insert that determines the shape of the spray pattern.
This is the the pattern that is produced after one depression onto the cap without the can being
moved in any direction. This is the basis how the shape and edge of a line will look. Some spray
patterns will be round and solid others may have a soft middle and hard edge. Results will vary by
paint type but they are generally similar. Here are some examples of different spray patterns and
tests. Pressure and distance from the wall are considered.