Technical suggestions

Materials

The nozzles are produced primarily in high performance polyacetal which is a highly stable material with outstanding wear characteristics and chemical resistance. The material is also UV stabilized to resist degradation in sunlight. Degradation of the material would adversely affect the characteristics of the nozzle tip, which, in turn, would affect the application rates. 
Using the latest ceramic injection moulding technology, we also produce components and nozzles with ceramic inserts for high pressure spraying and for applications requiring long term durability and heat and wear resistance.

 


Source: SGS UK LTD. Saint-Gobain AC France
Test medium: 2.5% Kaolin in water
Test pressure: 2.8 bar

 

ISO Colours
Our range of agricultural nozzle tips are sized and colour coded in accordance with the ISO proposals for international colour coding and flow rates (ISO10625); and have been classified by the BCPC (British Crop Protection Council). Physical sizes are to international requirements ensuring compatibility with international nozzle holders, caps and fittings.

Quality
A strict quality control is in operation to meet the demands of the customers. The factory can provide with a Quality Control Test Report with all consignments if required.

SPRAYING TECHNIQUES

Spraying coverage
Overall spraying is when the entire field is to be treated.
The width that each nozzle sprays, adjusted for spray overlap, is the distance between nozzles on the spray boom.
Band spraying is when planted rows or unplanted gaps are treated. The width that each nozzle sprays is the width of the treated band.

Sprayer Speed
Forward speed of the spraying machine should be measured accurately. Sensors should be calibrated after installation or servicing. Wheel-driven speedometers should be calibrated whenever the driving surface changes, such as after cultivation. Speed can be determined if it is known how long it takes to drive a measured distance:

speed in Km/h=
distance in metres x 3.6
time in seconds
Higher speeds (12-20 Km/h) improve work rates and timeliness; lower speeds (8-12 Km/h) give improved canopy penetration and reduce spray drift.

Application Rate
Read the pesticide label closely to determine an appropriate spray application rate. If a range of acceptable application rates is listed, choose a rate that best matches your situation. For example, application rates of less than 150 l/ha will increase work rates and improve timeliness whereas higher application rates (>150 l/ha), are required for good coverage in dense canopies.

Flow Rate
Determine the exact flow required from the nozzles by calculating:

speed in Km/h=
l/ha x km/h x nozzle spacing (m)
600

SPRAY PATTERN TYPE

Flat Fan pattern

Available as a tapered spray for boom applications or an even spray for single nozzle applications; e.g. knapsacks. They have an elliptical orifice, which produces a narrow oval pattern. Tapered nozzles produce a triangular spray pattern where most of the spray is deposited immediately under the nozzle. By overlapping tapered sprays across a boom, an even distribution across a boom can be obtained.

Deflect pattern

Also known as anvil or flood nozzles, deflect nozzles produce wide angled flat pattern when operated at low pressures (1-2 bar). The nozzles generally produce a coarse, even spray and are ideal for use with knapsack sprayers or mounted on tillage equipment.

Hollow cone pattern

Nozzles produce a hollow circular footprint. Hollow cones are used on air-assisted sprayers and traditional boom sprayers when good coverage in dense canopies is required.