1. WELCOME! 2016 Southeastern Hay Convention Brian Mathis
TeeJet Southeast Regional Sales Manager
WELCOME!

2. Proper Spray Tip Selection and Calibration
Brian Mathis
Southeast Regional Sales Manager

3. AGENDA Spray tip nomenclature and industry standards
International Color Code classifications
Tip color designates flow 40 psi
Droplet sizing and categorizing
Spray tip designs & spray patterns
Tip Selection and Calibration

4. FUNCTIONS OF A SPRAY NOZZLE
Control the flow rate
Form droplets
Disperse droplets into specific patterns

5. Nozzle Nomenclature

6. VisiFlo® Color Coding Standard

7. Spray Angle Spray angles given are nominal Minimum overlap is critical
Maximum overlap is not as critical
For most tapered spray patterns, a minimum 30% spray pattern overlap is recommended

8. Optimum Spray Height

9. Spray Patterns Most Common Types of spray patterns: Flat Fan Tapered
Even
Flooding (Wide Angle)
Cone Spray
Streaming nozzles

10. Tapered Flat Spray Pattern

11. Tapered Spray Pattern

12. Uniform distribution is achieved when spacing, height, and overlap are optimized

13. Even Flat Spray Pattern
Standard Design
TP TeeJet (TP E)
TwinJet (TJ60 E)
Pre-orifice Design
Drift Guard (DG E)
AI TeeJet (AI E)

14. Even Spray Pattern

15. Even Spray Pattern

16. Cone Spray Pattern

17. Fertilizer Spray Pattern

18. StreamJet SJ7 Fertilizer Nozzles

19. Nozzle Materials

20. Nozzle Wear
New Flat-Fan Nozzle
Worn Nozzle
Improperly Cleaned

21. Nozzle Wear When do I need to replace my tips? Wear rates depend on:
Tip material (stainless, polymer, ceramic)
Chemicals used
Water quality
Operating pressure
Care used when cleaning
When measured flow rates are 10% over nominal flow rate it’s time to replace them.

22. Spray Pattern Check
Damaged Nozzles
New Nozzles
Worn Nozzles

23. Spray Pressure Increasing pressure by 4 times doubles the flow rate
Higher pressure decreases droplet size and increases drift potential
Higher pressure increases orifice wear
Pressure impacts the spray angle and coverage

24. Droplet Size Measurement and ClassificationXF UC
Extremely Fine
Ultra Course

25. Droplet Size Classifications

26. Recommended Droplet Sizes for Various Pesticides
Droplet Spectrum
(by ASAE S572)
Contact insecticide and fungicide
Systemic insecticide and fungicide
Contact foliar herbicide
Systemic foliar herbicide
Soil-applied herbicide
Incorporated soil-applied herbicide
Very fine
(VF)
Fine
(F) 
Medium
(M)
Coarse
(C)
Very Coarse
(VC)
Extremely Coarse
(XC)
University of Illinois- Illinois Pesticide Applicator Manual: General Standards

27. What are Droplets?
Droplets are spray particles that make up the spray pattern from the nozzle
Droplet size directly impacts efficacy and drift.
For a given pressure, a spray tip will produce a range of droplet sizes
Expressed in Microns (micrometers)

28. PDPA Laser

29. Oxford Laser

30. What’s a micron? 1 micron (or 1 μ) is 1/1000 millimeter
1 micron is meters
1 micron is 1/25,400 inch
1 micron is inches

31. Comparison of Micron Sizes (approximate)
#2 Pencil lead paper clip staple toothbrush bristle sewing thread human hair
150m

32. Droplet Sizes Measured and then expressed in various ways.
VMD (Volume Median Diameter) or D(v0.5)
D(v0.1) (Small Droplets in relation)
D(v0.9) (Large Droplets in relation)
Mostly, droplet sizes are expressed in VMD.

33. VMD 1/2 of spray volume = smaller droplets
1/2 of spray volume = larger droplets

34. Distance Water Droplets Drift While Falling 3ft in a 5 MPH Wind
SIZE
MICRONS
DRIFT FEET
Very Coarse
600
0.3
Coarse
500
0.4
Medium
400
0.7
Fine
200
5.5
Very Fine
100
26.0
Ultra Fine 50
88.0

35. Major factor in spray tip selection and desired droplet size
MODE OF ACTION
Major factor in spray tip selection and desired droplet size
Contact
Systemic

36. Droplet Size Order
This Droplet Size classification comparison uses 02 tip capacity and should be shown along with printed copies of TeeJet LI-TJ143 which shows capacities 015 through 06.

37. Droplet Size Standard Flat Spray
Coarse
Fine
Turbo TeeJet® Induction
AIXR TeeJet®
Air Induction TeeJet®
Turbo TeeJet®
XR TeeJet®

38. Droplet size order TwinJet Style
Coarse
Fine
AITTJ-60
Air Induction
Turbo TwinJet
TeeJet offers a wide range of droplet size classifications to the TwinJet style spray tips. Droplet size classifications can be seen on page 136 and 137 of the TeeJet Catalog 51.
TTJ-60 Turbo TwinJet
AI3070
DGTJ-60 Drift Guard TwinJet
TJ-60 TwinJet

39. Drift Reduction Nozzle Technology
Pre-orifice to create pressure drop
Venturi effect to produce air-induced, larger droplets

40. Volume is metered at Pre-orifice
Turbo TeeJet
Turbo TwinJet

42. Low Drift TeeJet Nozzles
AITTJ-60
Air Induction
Turbo TwinJet
AIXR TeeJet®
110⁰Air Induction TeeJet®
Turbo TeeJet® Induction
80⁰Air Induction TeeJet®

43. AIXR Drop Size Classification
AIXR is ideal for growers who demand excellent drift control, but insist on applying at lower pressures. The AIXR is rated from psi. The standard AI tip is rated from psi.

44. Air Induction Turbo TwinJet AITTJ60

45. AITTJ60 Drop Size Classification
FIX CHARTS TO MAKE MORE VISABLE

46. AI Drop Size Classification
The AIC is simply an AI tip and a cap in a one-piece tip design.

47. TTI Drop Size Classification

48. Turbo TeeJet Induction (TTI)
Large air-filled droplets
Low profile
XC and UC droplet classification at all capacities and rated pressures
Extended range ( PSI)

49. TTI Turbo TeeJet Induction
MAXIMUM drift control
Produces Ultra Course or Extra Course droplets in all sizes and pressures
Extended operating range from psi

50. TTI Turbo TeeJet Induction

51. AI3070
Air Induction tip with 30⁰ forward and 70⁰ backward facing Twin wide angle flat spray patterns
Ideal for fungicide application in cereal crops
Refer to TeeJet LI-TJ143 document to see how the AI3070 droplet size classification compares to other TeeJet tips.

52. What size do I need? Application Rate? Speed Range? Pressure Range?
Tip Spacing?
Droplet Classification?

53. The Spray Nozzles you select will determine:

54. Sprayer Calibration Gets your sprayer ready for field operation
Diagnoses tip wear

55. Sprayer Calibration Equipment Needed: TeeJet Calibration Container
Calculator
Tip Cleaning Brush (A tooth brush will do)
One new Spray Tip of same capacity
Stopwatch

56. Sprayer Speed
1 MPH = 88 Feet traveled in 60 seconds

58. Sprayer Calibration Nozzle type and capacity on the sprayer
Recommended application volume from label
Sprayer speed (minimum and maximum)
Nozzle Spacing in Inches

59. Sprayer Calibration

60. Sprayer Calibration ANSWER: 0.404 GPM Example: 20 Gallons per Acre
6 Miles per Hour
20” Tip Spacings
ANSWER: GPM

62. Sprayer Calibration Engage your pump and start your sprayer
Check for leaks and/or blockages
Inspect and clean all tips and strainers

63. Sprayer Calibration

64. Sprayer Calibration Replace 1 tip with an identical NEW tip
Turn on sprayer and adjust to target pressure
Collect and measure volume from new tip for 1 minute

65. Sprayer Calibration Fine tune the pressure until you collect 0.40 GPM
Proper output and pressure is now correct to deliver 20 6 MPH, 20” tip spacings

66. Sprayer Calibration Collect volume from a few tip on each boom section
If flow rate is +/-10% than the NEW tip, replace tip
If multiple tips are +/-10%, replace all tips

67. Spray Tips Flow Rate Check for EVEN distribution
When measured flow rates are 10% over nominal flow rate it’s time to replace them

68. QUESTIONS?