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Setup
16 313516G
Adjust Spray Pattern
Use the fluid pressure regulator to adjust the
spray gun fluid flow. Some models are
equipped with a fluid control knob to make pre-
cise fluid flow adjustments.
Follow these steps to establish the correct fluid
flow and air flow:
1. To achieve desired flow, adjust the fluid flow
using the fluid pressure regulator (L)
installed in the gun fluid line. Typical indus-
trial flow rates will vary with regulator pres-
sures from 5 to 30 psi (34 to 210 kPa, 0.3 to
2.1 bar). If the fluid pressure is too low at
the desired flow rate, install a smaller noz-
zle. If the fluid pressure is too high, install a
larger nozzle.
For spray guns equipped with the fluid con-
trol knob, you can make flow rate changes
at the spray gun. Rotate the fluid control
knob clockwise to reduce the flow.
NOTE: A larger fluid nozzle at a reduced fluid
pressure will maintain the same flow rate, but
the fluid stream (velocity) will slow down.
When air is applied, the lower velocity allows
the air to act on the fluid longer, which
improves atomization.
2. Using the air pressure regulator (F), set the
fan and atomizing air supply pressure per
Table 1. Use these suggested settings as a
starting point.
Do not exceed 100 psi (0.7 MPa, 7 bar)
maximum fluid and air pressure. Higher
pressures can cause parts to rupture and
result in serious injury.
NOTICE
Use caution when operating the fluid con-
trol knob near the closed position. The
plastic needle tip may be damaged if
forced too hard against the nozzle seat by
the fluid control knob.
FIG. 10: Fluid Pressure Regulator
Table 1: Suggested Starting Settings
Spray Gun Fan Air (psi)
Atomization
Air (psi)
Conventional 35 35
HVLP 25 25
Compliant 25 25
L
ti7019a