Smithco Spray Star 2005, Operator'S, Page: 30 / 38

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Spraying Procedures
PARTS MANUALS AVAILABLE ONLINE AT smithco.com
TROUBLE SHOOTING NOZZLE VALVES
1. Complete Nozzle Valve Assembly 30-168-05P
The nozzle valve assembly (30-168-05P) screws into the nozzle bodies replacing
the standard diaphragm check valve.
NOZZLE CLEANING
Before removal or installation of nozzle valves make sure pressure has been removed
from the sprayer lines.
Remove the O-ring (Item 1), O-ring (Item 2), valve body (Item 3), flynut (Item 4), plunger (Item 5) and O-ring (Item
6) from the coil (Item 7).
Inspect the plunger for wear or damage. Replace plunger if worn or damaged.
Remove debris from nozzle components by washing components with clean water.
After extended use the soft plunger seal (Item 1) will wear
a groove where the seal impacts the hard orifice seat.
Replace plunger if worn or damaged.
As the groove deepens the pressure capacity of the valve
will decrease, until the pressure capacity interferes with
the operating pressure of the sprayer.
The result is erratic pulsing, often described as “flicker-
ing.” SharpShooter will operate normally at lower pres-
sures until replacement parts can be acquired. High oper-
ating pressures and abrasive spray solutions will
accelerate the wear of the plunger seal material.