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OPERATION
(CONTINUED)
SPRAYER VALVE SETTINGS AND SPRAY TANK AGITATION
The gate valve on the suction side of the pump, between the tank and the pump must be open before pump is
engaged. Close this valve only when necessary to clean the filter with spray material in the spray tank.
There are two manual flow control valves on the discharge side of the spray system.
There is a manual flow control valve on the discharge side of the spray system that controls the agitator. This
valve may be opened as much as necessary to provide hydraulic agitation through the quadrajet agitator in the
tank bottom. This valve may be partially closed to prevent or reduce foam buildup from the spray materials inside
the tank. When the liquid level in the spray tank reaches a certain level (usually 1-25 gallons (3.8-95 Liters)
depending on terrain and other conditions) it may be necessary to close the valve in the agitator line in order to
prevent loss of suction prime.
If your Spray Star is fitted with a hose reel, there is a third ball valve on the discharge system to supply material
to the hose reel.
The Quadrajet agitation system operates with four venturi jets in the tank bottom. These jets have replaceable
orifice discs which discharge the following amounts of spay material.
Nozzle
Diameter
1
/
"
8
1
/
"
8
1
/
"
8
5
/
"
32
5
/
"
32
5
/
"
32
3
/
"
16
3
/
"
16
3
/
"
16
You can change orifice disc sizes to enhance spray system performance. Smaller discs reduce amount of agita-
tion (desirable in some foaming materials) and make more dischargeable liquid available for nozzles. Larger (or
none) discs increase amount of agitation and make less dischargeable liquid available for nozzles.
12
Input to
Input to
Agitator
Agitator
Agitator
Pressure Pressure
in gpm
in L/min
in psi
1.9
7.2
25
2.7
10.2
50
3.8
14.4
100
2.8
10.6
25
4.2
15.9
50
5.5
20.8
100
3.6
13.6
25
5.6
21.2
50
7.9
29.9
100
Agitator
Agitator
Agitator
Output
Output
in bar
in gpm
in L/min
1.7
6.3
23.8
3.4
10.0
37.9
6.9
15.0
56.8
1.7
7.6
28.8
3.4
12.2
46.2
6.9
17.5
66.2
1.7
9.1
34.4
33.4
14.3
54.1
6.9
18.7
70.8
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