Air Caps and Fluid Nozzles
Air
Air
Air Caps
Caps
Caps and
and
and Fluid
Fluid
Fluid Nozzles
Nozzles
Nozzles
Fluid
Fluid
Fluid Nozzle
Nozzle
Nozzle Selection
Selection
Selection Chart
Chart
Chart
To reduce the risk of an injury, follow the
Pressure Relief Procedure, page 27
, before
removing or installing a fluid nozzle and/or air cap.
Fluid
Fluid
Fluid
Nozzle
Nozzle
Nozzle
Part
Part
Part No.
No.
No.
Color
Color
Color
Description
Description
Description
Orifice
Orifice
Orifice Size
Size
Size
mm
mm
mm (in.)
(in.)
(in.)
24N613
0.75 (.029)
24N614
1.0 (.042)
24N615
1.2 (.047)
24N616
1.5 (.055)
24N617
1.8 (.070)
24N618
2.0 (.079)
24N619
Black
For
standard
coatings
0.55 (.022)
24N620
0.75 (.029)
24N621
1.0 (.042)
24N622
1.2 (.047)
24N623
1.5 (.055)
24N624
1.8 (.070)
24N625
Blue
With
hardened
seat, for
abrasives
and
metallics
2.0 (.079)
Fluid
Fluid
Fluid Nozzle
Nozzle
Nozzle Performance
Performance
Performance Charts
Charts
Charts
Use the following procedure to select the proper fluid
nozzle for your application.
1.
For each fluid nozzle chart, find the point on the
graph corresponding to your desired flow rate
and viscosity. Mark the point on each graph with
a pencil.
2.
The thick vertical line in each graph represents
the target flow rate for that nozzle size. Find
the graph that has the marked point closest to
the thick vertical line. This is the recommended
nozzle size for your application. Significantly
exceeding the target flow rate may result in
lower spray performance due to excessive fluid
velocity.
3.
From the marked point, move across to the
vertical scale to find the required fluid pressure.
If the required pressure is too high, use the next
largest nozzle size. If the fluid pressure is too low
(< 0.35 bar, 3.5 kPa, 5 psi), use the next smallest
nozzle size.
Key
Key
Key to
to
to Fluid
Fluid
Fluid Nozzle
Nozzle
Nozzle Performance
Performance
Performance Charts
Charts
Charts
NOTE:
NOTE:
NOTE: Fluid pressures are measured at the spray
gun inlet.
260 Centipoise Fluid
160 Centipoise Fluid
70 Centipoise Fluid
20 Centipoise Fluid
68
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