5
3.2 CONTROLS
(cont’d)
6. Spray
Gun
The hand held spray wand is located at the end of the high-pressure line.
a) Hand
Grip
Provides a convenient and comfortable place for the operator to grasp and hold the spray wand.
b) Trigger
Controls the wand valve that allows water to flow though nozzles. Pull trigger toward the handgrip
to start the flow.
c) Safety
Latch
Locks the trigger in its OFF position. Flip the latch up into its stowed position when washing.
Always use safety latch when the wand is laid down for any reason.
d) Lance
Extension pipe (available in different lengths with insulation at the Princess Auto store).
e) Quick-Change Nozzle Fitting
Allows easy changing of nozzle sizes.
f) Nozzle
To select the correct nozzle size, determine the pressure (PSI) and flow (GPM) rating of your
pressure washer. This can be found on the manufacturer’s serial plate or literature.
Using the chart for nozzle requirements (see Figure 3 below) read across the top to the PSI of
your pressure washer then read down the column to the GPM of your pressure washer. The
correct orifice size is the number in the far left column. Most manufacturers will imprint an
identification code that will tell you the spray angle and the orifice size. For example, “2504”
means the nozzle has a spray angle of 25
°
and has a “4.0-size” orifice.
F
C
A
B
D
E
APPROXIMATE GALLONS PER MINUTE (GPM)
Orifice
Size
800
PSI
1000
PSI
1200
PSI
1500
PSI
2000
PSI
2500
PSI
3000
PSI
3500
PSI
4000
PSI
3.0
1.4
1.5
1.6
1.8
2.1
2.4
2.6
2.7
2.8
4.0 1.8 2.0 2.2 2.5 2.8 3.1 3.5 3.8 4.0
4.5
2.0
2.2
2.4
2.8
3.0
3.6
3.9
4.3
4.5
5.0 2.2 2.5 2.8 3.1 3.6 4.0 4.4 4.7 5.0
6.0
2.7
3.0
3.3
3.7
4.2
4.7
5.2
5.6
6.0
7.0 3.1 3.5 3.9 4.3 4.6 5.5 6.1 6.5 7.0
Figure 3: Spray Gun Components and Nozzle Chart
Nozzle
Spray
Patterns
0
°
15
°
25
°
40
°
