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Table 8: Effects of Pressure on Nozzle Flow Rate
Nozzle
Nozzle Flow Rates in Gallons Per Hour (Approx.)
Rating
at 100
120
145
PSI
PSI
PSI
0.4
0.44
0.48
0.5
0.55
0.60
0.6
0.66
0.72
0.7
0.71
0.78
0.8
0.82
0.90
0.9
0.93
1.02
0.9
0.99
1.08
1.0
1.10
1.20
1.1
1.20
1.32
1.2
1.31
1.44
1.3
1.37
1.51
1.4
1.48
1.63
1.5
1.64
1.81
1.7
1.81
1.99
1.8
1.92
2.11
2.0
2.19
2.41
2.3
2.46
2.71
2.5
2.74
3.01
2.8
3.01
3.31
3.0
3.29
3.61
3.3
3.56
3.91
3.5
3.83
4.21
4.0
4.38
4.82
4.5
4.93
5.42
5.0
5.48
6.02
The spray angle is determined by the size of the
combustion chamber and the gallons per hour required of
the appliance. The spray angle is important to keep the oil
from touching the sides of the combustion chamber. Table
9 shows suggested spray angles for different combustion
chambers.
Figure 21: Spray Angles
160
175
200
PSI
PSI
PSI
0.51
0.53
0.57
0.63
0.66
0.71
0.76
0.79
0.85
0.82
0.86
0.92
0.95
0.99
1.06
1.08
1.12
1.20
1.14
1.19
1.27
1.26
1.32
1.41
1.39
1.46
1.56
1.52
1.59
1.70
1.58
1.65
1.77
1.71
1.79
1.91
1.90
1.98
2.12
2.09
2.18
2.33
2.21
2.32
2.47
2.53
2.65
2.83
2.85
2.98
3.18
3.16
3.31
3.54
3.48
3.64
3.89
3.79
3.97
4.24
4.11
4.30
4.60
4.43
4.63
4.95
5.06
5.29
5.66
5.69
5.95
6.36
6.32
6.61
7.07
Table 9: Suggested Spray Angles for Different
300
PSI
0.69
0.87
1.04
1.13
Nozzle
1.30
Size or
Spray
1.47
Rating
Angle
1.56
(GPH)
1.73
1.91
0.50 –
2.08
80°
0.65
2.17
2.34
60°
0.75 –
2.60
0.85
80°
2.86
45°
3.03
1.00 –
60°
3.46
1.10
3.90
80°
4.33
45°
4.76
1.25 –
60°
5.20
1.35
5.63
80°
6.06
45°
6.93
1.50 –
60°
7.79
1.65
8.66
80°
45°
1.75 –
60°
2.00
80°
45°
2.25 –
60°
2.50
80°
45°
3.00
60°
80°
* Recommend oblong chamber for narrow sprays.
Service Technician Reference Guide.
13
Combustion Chambers
Square or Rectangular
Combustion Chamber
L
W
H
Length
Width
Height
(in.)
(in.)
(in.)
8
8
11
10
8
12
9
9
13
14
7
12
11
9
13
10
10
14
15
8
11
12
10
14
11
11
15
16
10
12
13
11
14
12
12
15
18
11
14
15
12
15
14
13
16
18
12
14
17
13
15
15
14
16
20
13
15
19
14
17
18
16
18
Information presented on nozzle
selection was taken from Delavan
Round
C
Chamber
Nozzle
(Diameter
Height
in Inches)
(in.)
4
9
4
*
5
10
4
*
5
*
6
11
5
*
6
*
7
12
6
*
7
*
7
13
6
*
7
*
8
15
7
*
8
*
8
16
7
*
8
*
9
17
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