Komet
Pivot
Sprinkler
Products
Komet Fixed Spray Devices (KPS)
LEPA
LESA
LEPA

Low Energy Precision Application

Low Energy Precision Application (LEPA) allows water to be applied directly to the soil reducing losses due to wind drift and evaporation. Application is limited to specific conditions. The Vertical Bubbler applies the water into the furrows whereas the Wide Bubbler applies the water in a wider dome shaped pattern without spraying.

Komet
Vertical Bubbler
(KPS)

Komet Vertical Bubbler
Nozzle Range
38 nozzles
1.6 - 8.9 mm
8 - 45 1/128"
Flow Range
64.7 - 4419.2 l/hr
0.28 - 19.46 gpm
Download

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Technical information

Operating Instructions KPS

Operating Instructions
Rapid Fit Nozzle

Operating Instructions
Rapid Fit Nozzle Tool

KPS Vertical Bubbler Deflectors

Vertical Bubbler
Reverse Side
CC 33 Blue

Komet Vertical Bubbler Deflector Blue

Vertical Bubbler
Reverse Side
FL 33 Black

Komet Vertical Bubbler Deflector Black

Vertical Bubbler
Reverse Side
FL 24 Grey

Komet Vertical Bubbler Deflector Grey

Vertical Bubbler
Reverse Side
FL 30 Yellow

Komet Vertical Bubbler Deflector Yellow

Vertical Bubbler Cap

komet-vertical-bubbler-cup

Komet
Wide Bubbler 60”
(KPS)

Vertical Bubbler 60
Nozzle Range
22 nozzles
1.8 - 6.0 mm
9 - 30 1/128"
Flow Range
81.7 - 2008.2 l/hr
0.36 - 8.84 gpm
Throw Range
1.1 - 3.75 m
3.6 - 12.3 ft

at 0.6 m (2 ft)
ground clearance
Download

Download

Technical information

Operating Instructions KPS

Operating Instructions
Rapid Fit Nozzle

Operating Instructions
Rapid Fit Nozzle Tool

KPS Wide Bubbler 60" Deflector

Wide Bubbler 60"
Reverse Side
FL 33 Brown

Wide Bubbler 60
LESA

Low Elevation Sprinkler Application

Low Elevation Sprinkler Application (LESA) is a conventional spray device application, where sprinklers are installed low to the ground while maintaining an overlap between sprinklers. The single deflector device is the standard configuration. The dual deflector configuration is used where losses due to evaporation and wind drift can be expected.

Komet
Precision Spray
(KPS)

Komet Precision Spray
Nozzle Range
45 nozzles
1.6 - 10.3 mm
8 - 52 1/128"
Flow Range
64.7 - 5973.5 l/hr
0.28 - 26.30 gpm
Throw Range
5.3 - 18.2 m
17.5 - 59.7 ft

at 1.8 m (6 ft)
ground clearance

Available models

Komet Precision Spray (KPS)
360°

Komet Precision Spray 360Komet Precision Spray 360

Komet Precision Spray (KPS)
180° Part Circle

Komet Precision Spray 180Komet Precision Spray 180

KPS Deflector

(Reverse side option – corn chemigation deflector or installation of mini deflector)

Blue Deflector
CC 33

Komet Precision Spray Blue Deflector

Black Deflector
FL 33

Komet Precision Spray Black Deflector

Grey Deflector
FL 24

Komet Precision Spray Grey Deflector

Yellow Deflector
FL 30

Komet Precision Spray Yellow Deflector

Mini Black Deflector
FL 24

Komet Precision Spray Mini Black Deflector

Mini Turquoise Deflector
FL

Komet Precision Spray Mini Turquoise Deflector

Blue Deflector
CC 15 - PC180°

Komet Precision Spray Blue Deflector 180
Download

Download

Technical information

Operating Instructions KPS

Operating Instructions
Rapid Fit Nozzle

Operating Instructions
Rapid Fit Nozzle Tool

Komet
Dual Spray
(KPS)

Komet Dual Spray
Nozzle Range
45 nozzles
1.6 - 10.3 mm
8 - 52 1/128"
Flow Range
64.7 - 5973.5 l/hr
0.28 - 26.30 gpm
Throw Range
5.9 - 15.60 m
19.3 - 51.2 ft

at 1.8 m (6 ft)
ground clearance

Available models

Komet Precision Spray (KPS)
Single Plate

from nozzle 8 - 29 1/128"
(1.6 - 5.8 mm)

Komet Precision Spray 360Komet Precision Spray 360

Komet Dual Spray (KPS)
Double Plate

from nozzle 30 - 52 1/128"
(6.0 - 10.3 mm)

Komet Dual SprayKomet Dual Spray

KPS Dual Deflectors

Blue Deflector CC33

Komet Dual Spray Deflector Blue

Black Deflector FL 33

Komet Dual Spray Deflector Black

Blue Deflector w/hole CC33

Komet Dual Spray Deflector Blue With Hole

Dual Connector

Komet Dual Spray Connector
Download

Download

Technical information

Operating Instructions KPS

Operating Instructions
Rapid Fit Nozzle

Operating Instructions
Rapid Fit Nozzle Tool

Pivot Static Pivot Static Pivot Static Pivot Static

Fixed Spray Irrigation

LEPA/LESA: Advantages, drawbacks and areas of application

A vital part of designing a center pivot system is choosing the right irrigation spray heads. This involves a number of important decisions – including the choice between rotating and fixed spray irrigation sprinklers. The factors that should be taken into account include the type of crop you intend to irrigate, the climatic conditions within your region, the depth, consistency and composition of the soil, and the topography of the respective field. While every scenario will present its own requirements and challenges, there are some guiding principles that can be applied on a relatively universal basis.

Broadly speaking, freely rotating spray irrigation sprinklers (or distribution devices) are designed to cover a more expansive area over longer periods of time. Due to their lower application rate, the water emitted by rotating sprinklers has more time to infiltrate the soil (which is why freely rotating spray irrigation with distribution devices is generally the better choice for sloping terrains). Freely rotating spray irrigation sprinklers also offer a better, more continuous ground coverage with less risk of streaking, compared to sprinklers with a fixed spray pattern.

There are, however, settings in which fixed spray irrigation devices are the more practicable option. LESA (Low Energy Spray Application) irrigation, for example, is based on fixed spray irrigation devices whose narrow, vertical stream delivers water straight into the furrows between the crop rows. The aim of LESA irrigation is to enable a very localized, low-pressure irrigation. LESA spray irrigation sprinklers are usually suspended no more than 3 feet (1 meter) above the soil surface, and spaced at around 30 inches to create an overlap between their sprinkler head spray patterns. Similarly, in LEPA (Low Energy Precision Application) irrigation systems, bubblers are positioned on or just above the soil surface, directly targeting the root zone of the crop.

The main advantages of LEPA / LESA sprinkler irrigation include low water usage and pumping costs, along with a minimized risk of water losses caused by wind drift and evaporation. For this reason, LEPA / LESA irrigation can be particularly useful in regions that are prone to high temperatures and severe winds, as well as areas affected by pronounced water scarcity. LEPA / LESA spray irrigation is also beneficial for crops that are susceptible to foliar diseases, as the plant canopy itself tends to remain dry. In addition, LEPA and LESA spray irrigation can reduce overall wear and tear on the entire center pivot system, as the soil profile is filled more quickly – so that fewer passes are required.

It is important to note that only very specific soils, climates and topographies are suited to LEPA / LESA sprinkler irrigation. Due to the relatively high instantaneous application rate (which allows less time for the water to infiltrate the soil), LEPA / LESA sprinkler irrigation is more likely to cause issues such as puddling, runoff and compaction of the soil. For this reason, a LESA / LEPA irrigation system should only be installed in fields with a fairly flat topography. On sloping terrains, a fixed spray irrigation system is not usually recommended, due to the increased risk of erosion this irrigation method inevitably entails.

Irrigation Spray Heads for LEPA / LESA Irrigation

Building the perfect LEPA / LESA irrigation system with Komet’s LEPA / LESA sprinklers

Komet’s pivot irrigation product catalog includes several fixed-spray and bubbler options that are specifically geared towards LEPA / LESA irrigation: The Komet Precision Spray (KPS) series comprises three LESA sprinklers with fixed spray patterns – a 360° standard model, a 180° part circle sprinkler for dry wheel track applications, and a dual model for high-flow machines – and two bubbler variants – vertical and wide bubblers. The KPS series is complemented by a number of separately available deflectors with varying numbers of flat (FL) or concave (CC) grooves.

While the above-mentioned LESA sprinklers (360° / 180° / dual) are each geared towards their own specific area of application – with different sprinkler head spray patterns, trajectory angles, nozzle ranges and deflector compatibilities – they are, in fact, based on the same core body. What is more, every KPS model features an integrated storage for an additional nozzle. This makes it easy to swap irrigation spray head nozzles at later stages of the growing season (for example, once the germinating seedlings have matured), and ensures that the intended nozzle will be fitted to the correct outlet. Furthermore, the KPS body comes with an integrated cleaning pin, which is the perfect size for freeing the sprinkler nozzle’s opening of possible blockages and debris.

As for Komet’s LEPA irrigation segment: Komet currently offers two KPS bubbler models – the KPS Vertical Bubbler, and the KPS Wide Bubbler 60” – which operate at very low pressures, and are once again based on the same core body.

The KPS Vertical Bubbler is suitable for circular crop rows only. It is designed to deliver water into the furrows in the form of a straight, narrow stream, directly targeting the root zone of the crop. The Vertical Bubbler is compatible with an extensive range of different deflectors. For ultimate flexibility, the KPS Vertical Bubbler can even be converted into the ‘standard’ KPS sprinkler with a 360-degree fixed spray pattern: This is achieved by simply removing the bubbler cap, and turning the respective deflector upside down.

The KPS Wide Bubbler 60” is suitable for straight as well as circular crop rows. Like the KPS Vertical Bubbler, the Wide Bubbler distributes water straight into the furrows between the crop rows – however, it does so with a wider, dome-shaped irrigation pattern, and at a lower instantaneous application rate. This can be advantageous in the case of more compact soils, as the Wide Bubbler’s larger irrigation pattern and lower kinetic energy reduce the potential for runoff. Its more expansive and more even coverage also makes the Wide Bubbler better suited to applying chemicals and fertilizers directly to the soil surface. The KPS Wide Bubbler 60” is only compatible with one deflector (type: ’FL33’, i.e.: flat, with 33 grooves) – which can also be turned upside down to ‘transform’ the Wide Bubbler into a standard, 360-degree KPS fixed spray irrigation sprinkler.

The KPS models can be installed on all drops – with the exception of the KPS Part Circle fixed spray irrigation sprinkler: As with all sprinklers with a 180-degree spray pattern, the KPS Part Circle is limited to rigid-hose installation, as the gravitational effects of its one-sided spray irrigation output would otherwise cause it to become tilted.

To find out more about LESA / LEPA irrigation and a broad range of other irrigation-related topics, why not take part in one of our Komet Academy sessions? In this ongoing series of free webinars, our irrigation experts share their in-depth expertise with audiences around the world. The Komet Academy is entirely product-neutral, and an excellent opportunity to expand your knowledge on all aspects of successful irrigation with a center pivot system.