Hunter Technical Support Document

How do you calculate the precipitation rates on the I-90 rotor with opposing nozzles?

Product Lines:
Rotors
Products: 
I-90
Topics: 
FAQs, Installation Procedures

The I-90-ON is now compatible with Hunter PGP nozzles, the opposing nozzles and the mid and short range nozzles can now be outfitted with normal PGP nozzles.

Now that there are multiple options and configurations of nozzle pairings, each nozzle's precip rate will have to be taken into consideration. A total precip rate for all nozzles will no longer be accurate.

 

PGP Red Nozzle Performance Data

 

PGP Red Nozzle Rack

PGP Red Nozzle
Performance Data (P/N 130900)
Nozzle Pressure
(PSI)		 Radius
(ft.)		 Flow
(GPM)		 Precip in/hr

1

30

28

0.5

0.12

0.14

40

29

0.6

0.14

0.16

50

29

0.7

0.16

0.19

60

30

0.8

0.17

0.20
2

30

29

0.7

0.16

0.19

40

30

0.8

0.17

0.20

50

30

0.9

0.19

0.22

60

31

1.0

0.20

0.23
3

30

30

0.9

0.19

0.22

40

31

1.0

0.20

0.23

50

31

1.2

0.24

0.28

60

32

1.3

0.24

0.28
4

30

32

1.2

0.23

0.26

40

33

1.4

0.25

0.29

50

34

1.6

0.27

0.31

60

34

1.8

0.30

0.35
5

30

32

1.6

0.30

0.35

40

36

1.8

0.27

0.31

50

38

2.0

0.27

0.31

60

38

2.2

0.29

0.34
6

30

34

2.0

0.33

0.38

40

36

2.4

0.36

0.41

50

38

2.7

0.36

0.42

60

38

2.9

0.39

0.45
7

30

34

2.6

0.43

0.50

40

38

3.0

0.40

0.46

50

40

3.4

0.41

0.47

60

40

3.7

0.45

0.51
8

30

37

3.2

0.45

0.52

40

39

3.7

0.47

0.54

50

41

3.9

0.45

0.52

60

42

4.6

0.50

0.58
9

30

38

3.6

0.48

0.55

40

41

4.3

0.49

0.57

50

44

5.2

0.52

0.60

60

45

5.5

0.52

0.60
10

40

44

6.0

0.60

0.69

50

46

6.8

0.62

0.71

60

47

7.6

0.66

0.76

70

49

8.2

0.66

0.76
11

40

46

8.0

0.73

0.84

50

48

8.9

0.74

0.86

60

50

9.8

0.75

0.87

70

51

10.5

0.78

0.90
12

40

46

10.5

0.96

1.10

50

48

11.9

0.99

1.15

60

50

12.7

0.98

1.13

70

52

14.1

1.00

1.16

I90-36V Performance Data

I-90 Nozzle Rack
Nozzle Pressure
PSI		 Radius
ft.		 Flow
GPM		 Precip in/hr

25

Lt. Blue

 80 73 30.5 0.55 0.64
90 75 32.4 0.55 0.64
100 76 34.3 0.57 0.66
110 78 36.5 0.58 0.67
120 79 38.4 0.59 0.68
33

Gray

 80 77 36.3 0.59 0.68
90 78 38.4 0.61 0.70
100 80 40.6 0.61 0.71
110 81 42.7 0.63 0.72
120 82 44.9 0.64 0.74
38

Red

 80 80 40.6 0.61 0.71
90 82 42.9 0.61 0.71
100 83 45.3 0.63 0.73
110 85 47.7 0.64 0.73
120 86 50.2 0.65 0.75
43

Dk. Brown

 80 83 46.2 0.65 0.75
90 84 48.6 0.66 0.77
100 85 50.9 0.68 0.78
110 86 53.4 0.69 0.80
120 87 55.9 0.71 0.82
48

Dk. Green

 80 86 49.6 0.65 0.75
90 89 52.5 0.64 0.74
100 90 54.8 0.65 0.75
110 91 57.3 0.67 0.77
120 92 59.5 0.68 0.78
53

Dk. Blue*

 80 89 54.2 0.66 0.76
90 90 56.7 0.67 0.78
100 92 59.2 0.67 0.78
110 93 61.7 0.69 0.79
120 94 64.2 0.70 0.81
63

Black

 80 92 63.2 0.72 0.83
90 94 65.9 0.72 0.83
100 96 69.4 0.72 0.84
110 97 72.0 0.74 0.85
120 98 74.9 0.75 0.87
73

Orange

 80 96 72.1 0.75 0.87
90 98 75.0 0.75 0.87
100 99 77.8 0.76 0.88
110 102 80.5 0.74 0.86
120 103 83.3 0.76 0.87

PGP Blue Standard Nozzle Performance Data

PGP Nozzle Rack

PGP Blue Standard Nozzle
Performance Data (P/N 665300)
Nozzle Pressure
(PSI)		 Radius
(ft.)		 Flow
(GPM)		 Precip in/hr

1.5

25

29

1.2

0.27

0.32

35

31

1.4

0.28

0.32

45

31

1.5

0.30

0.35

55

32

1.8

0.34

0.39

65

32

1.9

0.36

0.41
2.0

25

33

1.4

0.25

0.29

35

33

1.7

0.30

0.35

45

34

2.0

0.33

0.38

55

34

2.1

0.35

0.40

65

34

2.3

0.38

0.44
2.5

25

33

1.7

0.30

0.35

35

35

2.1

0.33

0.38

45

35

2.5

0.39

0.45

55

35

2.6

0.41

0.47

65

35

2.9

0.46

0.53
3.0

25

35

2.2

0.35

0.40

35

36

2.7

0.40

0.46

45

38

3.0

0.40

0.46

55

39

3.4

0.43

0.50

65

39

3.7

0.47

0.54
4.0

25

37

3.0

0.42

0.49

35

39

3.5

0.44

0.51

45

40

4.0

0.48

0.56

55

41

4.5

0.52

0.60

65

41

4.8

0.55

0.63
5.0

25

37

3.7

0.52

0.60

35

39

4.5

0.57

0.66

45

42

5.0

0.55

0.63

55

42

5.7

0.62

0.72

65

42

6.2

0.68

0.78
6.0

25

38

4.3

0.57

0.66

35

40

5.6

0.67

0.78

45

43

6.0

0.62

0.72

55

44

6.7

0.67

0.77

65

44

7.3

0.73

0.84
8.0

25

37

6.0

0.84

0.97

35

41

7.0

0.80

0.93

45

44

8.0

0.80

0.92

55

46

9.0

0.82

0.95

65

46

9.8

0.89

1.03
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