Netafim D-Net 6550 User manual

V 001.01 - JULY 2017
D-NetTM 6550
USER MANUAL
3D ARM IMPACT SPRINKLER

© COPYRIGHT 2016, NETAFIM™
NO PARTS OF THIS PUBLICATION MAY BE REPRODUCED, STORED IN AN AUTOMATED DATA FILE OR MADE PUBLIC IN
ANY FORM OR BY ANY MEANS, WHETHER ELECTRONIC, MECHANICAL, BY PHOTOCOPYING, RECORDING OR IN ANY
OTHER MANNER WITHOUT PRIOR WRITTEN PERMISSION OF THE PUBLISHER.
ALTHOUGH NETAFIM™ TAKES THE GREATEST POSSIBLE CARE IN DESIGNING AND PRODUCING BOTH ITS PRODUCTS
AND THE ASSOCIATED DOCUMENTATION, THEY MAY STILL INCLUDE FAULTS.
NETAFIM™ WILL NOT ACCEPT RESPONSIBILITY FOR DAMAGE RESULTING FROM USE OF NETAFIM'S PRODUCTS OR
USE OF THIS MANUAL.
NETAFIM™ RESERVES THE RIGHT TO MAKE CHANGES AND IMPROVEMENTS TO ITS PRODUCTS AND/OR THE
ASSOCIATED DOCUMENTATION WITHOUT PRIOR NOTICE.
FOREIGN LANGUAGES
If you are reading this manual in a language other than the English language, you acknowledge and
agree that the English language version shall prevail in any case of inconsistency or contradiction in
interpretation or translation.
NOTE
All the drawings in this document are for the purpose of illustration only. The actual product details
and infrastructure condition, may differ in any actual application.

CONTENTS
Introduction
Use of symbols
Aim of this manual
Safety instructions
D-Net™ 6550 3D arm impact sprinkler
Description
Applications
Features and benefits
Specifications
Technical data
Performance
Max. lateral length - 10% flow variation
Sprinkler water trajectory
Head loss in riser tube
Installation
Introduction
Various installation configurations
Maintenance
Rinsing the nozzle
Checking the white washer
Parts
Warranty
4
4
4
5
5
5
5
6
7
8
8
9
9
10
11
12
13

4 D-Net 6550TM USER MANUAL
INTRODUCTION
WARNING
The following text contains instructions aimed at preventing bodily injury or direct damage to
the crops, the product and/or the infrastructure.
CAUTION
The following text contains instructions aimed at preventing unwanted system operation,
installation or conditions that, if not followed, might void the warranty.
ATTENTION
The following text contains instructions aimed at enhancing the effective use of the instructions
in the manual.
NOTE
The following text contains instructions aimed at emphasizing certain aspects of the installation
or operation of the product.
SAFETY FOOTWEAR
The following text contains instructions aimed at preventing foot injury.
TIP
The following text provides clarification, tips or useful information.
Use of symbols
The symbols used in this manual refer to the following:
Aim of this manual
The aim of this manual is to guide the user in setting up, installation, operating and maintenance of the
D-Net™ 6550 sprinkler in its various applications.
Safety instructions
•All local safety regulations must be applied when installing, operating, maintaining and troubleshooting
the Netafim™ sprinkler irrigation system and its components.
•The effectiveness of the equipment may be jeopardized or impaired if the equipment is used in a manner
other than that specified by the manufacturer.
WARNING
In an agricultural environment - always wear protective footwear.
CAUTION
When opening or closing any manual valve, always do so gradually, to prevent damage to the
system by water hammer.

D-Net 6550TM USER MANUAL 5
D-NET™ 6550 3D ARM IMPACT SPRINKLER
Description
Applications
For under canopy irrigation, plantations, bananas, orchards or any other full coverage needs.
Features and benefits
Higher and better yields
• The D-Net™ 6550 provides high uniformity distribution of the water due to the unique 3-D arm that
enables the highest uniformity in the market, respective to its flow rate and installation spacing.
• The D-Net™ 6550 provides maximum water-use efficiency.
Saves labor cost and multiple investment on maintenance
• High robustness - The D-Net™ 6550 has special design that makes the sprinkler more resistible and
ensure high performance for a long product life.
• Extended product life - The D-Net™ 6550 is made of UV-protected materials, making it durable under all
climate conditions and with any applied nutrients.
• Flexible installation - Can be installed on solid sets or on removable field stands.
• Easy to maintain - A special nozzle design, allows simple cleaning of the nozzle even under pressure.
Specifications
• 3 different nominal flow rates: 355, 400, 510 l/h. Nominal flow rates at 2.5 bar pressure.
• Recommended working pressure: 2.0 to 3.0 bar (at the sprinkler head).
• Water trajectory: 14 degrees
• Inlet connector: 1/2” male threaded.
• Color-coded nozzles for easy identification.
ATTENTION
• Wherever sand exceeding 2 ppm exists in the water, a Hydrocyclone is to be installed to protect
the system.
• When sand/ silt/ clay solids exceed 100 ppm, pretreatment will be applied according to Netafim™
expert team’s instructions.
Nozzle
3D arm
White washer
½" male thread
Axel bottom nut

6 D-Net 6550TM USER MANUAL
TECHNICAL DATA
Performance
Nozzle Working
pressure
(bar)
Flow
rate
(l/h)
Wetted
diameter*
(m)
Spacing (m x m)
Size
(mm)
Color
code
9 x 9 9 x 10 10 x 10 10 x 11 10 x 12 12 x 12
Precipitation (mm/h)
2.3 Gray
2.0 318 22 3.9 3.5 3.2 2.9 2.7 2.2
2.5 355 22 4.4 3.9 3.6 3.2 3.0 2.5
3.0 389 23 4.8 4.3 3.9 3.5 3.2 2.7
2.5 Purple
2.0 358 23 4.4 4.0 3.6 3.3 3.0 2.5
2.5 400 24 4.9 4.4 4.0 3.6 3.3 2.8
3.0 438 25 5.4 4.9 4.4 4.0 3.7 3.0
2.9 Orange
2.0 456 23 5.6 5.1 4.6 4.1 3.8 3.2
2.5 510 25 6.3 5.7 5.1 4.6 4.3 3.5
3.0 559 25 6.9 6.2 5.6 5.1 4.7 3.9
* Sprinkler head 0.5 meter above ground. At least 0.5 mm/h.
(a)
(b)
Sprinkler
Lateral
(a)
(b)
Sprinkler
Lateral
(a)
Sprinkler
Lateral
(b)
(b)
a = b
NOTE
The area-coverage and dispersion-uniformity of a layout of sprinklers is influenced by the alignment
of the sprinklers.
The common types of sprinkler alignment are:
Rectangular alignment Triangular alignment
Isosceles Equilateral
Do not confound isosceles with equilateral:
• An isosceles triangle is a triangle in which two sides are of equal length. The distance between 2
adjacent sprinklers on the same lateral (a) is not equal to the distance between 2 sprinklers on
adjacent laterals. The height of the triangle represents the distance between adjacent laterals (b).
Isosceles is usually referred to In open-field applications.
• An equilateral triangle is a triangle in which all three sides are equal. The distance between 2
adjacent sprinklers on the same lateral is equal to the distance between 2 sprinklers on adjacent
laterals. Equilateral is occasionally referred to in orchards due to the tree planting pattern.

D-Net 6550TM USER MANUAL 7
TECHNICAL DATA
Max. lateral length - 10% flow variation
Inlet pressure: 3.0 bar
*Nominal flow rate at 2.5 bar working pressure.
Lateral: 50 mm ID: 45.4 mm
Slope
Distance between sprinklers (m)
910 11 12
Max. lateral length (m)
Uphill 2% 189 190 198 204
1% 225 230 242 252
Flat terrain 0 261 280 297 312
Downhill -1% 297 320 341 360
-2% 324 350 374 408
Nominal
flow rate:
355 l/h*
Slope
Distance between sprinklers (m)
910 11 12
Max. lateral length (m)
Uphill 2% 180 190 198 204
1% 207 220 231 240
Flat terrain 0 243 260 275 288
Downhill -1% 270 290 319 336
-2% 297 320 341 372
Nominal
flow rate:
400 l/h*
Slope
Distance between sprinklers (m)
910 11 12
Max. lateral length (m)
Uphill 2% 162 170 176 180
1% 180 190 209 216
Flat terrain 0 207 220 242 252
Downhill -1% 234 250 264 288
-2% 252 270 286 312
Nominal
flow rate:
510 l/h*
Lateral: 32 mm ID: 27.2 mm
Slope
Distance between sprinklers (m)
910 11 12
Max. lateral length (m)
Uphill 2% 99 110 110 120
1% 108 110 121 132
Flat terrain 0 117 120 132 132
Downhill -1% 117 130 143 144
-2% 126 140 143 156
Nominal
flow rate:
355 l/h*
Slope
Distance between sprinklers (m)
910 11 12
Max. lateral length (m)
Uphill 2% 90 100 110 108
1% 99 110 110 120
Flat terrain 0 108 110 121 132
Downhill -1% 108 120 132 132
-2% 117 130 132 144
Nominal
flow rate:
400 l/h*
Slope
Distance between sprinklers (m)
910 11 12
Max. lateral length (m)
Uphill 2% 81 90 88 96
1% 90 90 99 108
Flat terrain 0 90 100 110 108
Downhill -1% 99 100 110 120
-2% 99 110 121 120
Nominal
flow rate:
510 l/h*
Lateral: 40 mm ID: 36.8 mm
Slope
Distance between sprinklers (m)
910 11 12
Max. lateral length (m)
Uphill 2% 144 150 165 168
1% 162 180 187 192
Flat terrain 0 189 200 209 228
Downhill -1% 207 220 231 252
-2% 216 230 253 264
Nominal
flow rate:
355 l/h*
Slope
Distance between sprinklers (m)
910 11 12
Max. lateral length (m)
Uphill 2% 135 150 154 156
1% 153 160 176 180
Flat terrain 0 171 180 198 204
Downhill -1% 189 200 220 228
-2% 198 220 231 252
Nominal
flow rate:
400 l/h*
Slope
Distance between sprinklers (m)
910 11 12
Max. lateral length (m)
Uphill 2% 126 130 143 144
1% 135 140 154 156
Flat terrain 0 153 160 165 180
Downhill -1% 162 170 187 192
-2% 171 180 198 204
Nominal
flow rate:
510 l/h*
Lateral: FlexNet™ 2" ID: 51.5 mm
Slope
Distance between sprinklers (m)
910 11 12
Max. lateral length (m)
Uphill 2% 207 210 220 228
1% 252 270 286 288
Flat terrain 0 315 330 352 372
Downhill -1% 360 390 418 444
-2% 396 430 462 492
Nominal
flow rate:
355 l/h*
Slope
Distance between sprinklers (m)
910 11 12
Max. lateral length (m)
Uphill 2% 198 210 209 216
1% 243 250 264 276
Flat terrain 0 288 310 330 348
Downhill -1% 333 360 385 408
-2% 369 400 429 456
Nominal
flow rate:
400 l/h*
Slope
Distance between sprinklers (m)
910 11 12
Max. lateral length (m)
Uphill 2% 180 190 198 204
1% 216 220 242 252
Flat terrain 0 252 270 286 300
Downhill -1% 279 300 319 348
-2% 306 330 352 384
Nominal
flow rate:
510 l/h*

8 D-Net 6550TM USER MANUAL
Sprinkler water trajectory
A
B
A. Distance - Distance of max. trajectory height from sprinkler nozzle.
B. height - Elevation of max. trajectory height above ground.
Trajectory height above sprinkler nozzle
The maximum trajectory height above the sprinkler nozzle is relevant in the following cases:
• When sprinklers are used under the canopy to prevent wetting the foliage.
• When sprinklers are used in a net-house or inside a roofed structure such as a glasshouse, to prevent
wetting the net or the ceiling.
TECHNICAL DATA
*Nominal flow rate at 2.5 bar working pressure.
Nozzle Working
pressure
(bar)
Trajectory (m)
Size
(mm)
Color
code Height Distance
2.3 Gray
2.0 0.8 5.0
2.5 0.9 5.6
3.0 1.1 6.2
2.5 Purple
2.0 0.8 5.2
2.5 1.0 5.8
3.0 1.1 6.3
2.9 Orange
2.0 0.9 5.3
2.5 1.0 6.0
3.0 1.2 6.5
Water trajectory angle: 14 degrees
Head loss in riser tube
Riser tube: OD 12.0 mm , ID 9.0 mm
Riser
tube
length
(m)
Flow rate* (l/h)
355 400 510
Head loss (bar)
1.2 0.046 0.057 0.087
Riser tube: ½" , ID 15.0 mm
Riser
tube
length
(m)
Flow rate* (l/h)
355 400 510
Head loss (bar)
0.4 0.001 0.002 0.003
0.8 0.003 0.003 0.005
1.2 0.004 0.005 0.008

D-Net 6550TM USER MANUAL 9
Introduction
CAUTION
Assembly must be done gently. Do not overtighten or use excessive force.
Tools required
•20 mm spanner
Various installation configurations
Netafim™ sprinklers can be installed at a convenient height in different configurations, to suit the needs of
various crops and field conditions.
Among the various installation options:
• Mega Stand™ - a ½" diameter robust and durable modular sprinkler stand suitable for a variety of
agriculture and mining irrigation applications.
• IMP SPR stand™ - a ½" diameter stand, satisfactorily used by farmers all over the globe for many years.
It became a classic in open field and orchard irrigation due to its durability, simplicity and versatility.
It can accommodate any type of ½" sprinkler.
• Solid set - Netafim™ offers a comprehensive range of sockets and reducer couplings dedicated to
the proper connection of sprinklers to solid-set riser pipes (PVC or other rigid pipes). Usage of these
accessories ensures appropriate, safe operation and longevity of the sprinklers.
See the installation manual for each one of the above installation options at
http://www.netafim.com/irrigation-products-technical-materials
INSTALLATION
ATTENTION
When installing a Netafim™ impact hammer sprinkler (such as
D-Net™) on a solid set riser pipe of the same thread size, make
sure to allow clearance for the free rotation of the axel bottom
nut.
If sufficient clearance is not allowed and the axel bottom
nut comes in contact with any internal part of the piping, the
sprinkler will not rotate.
Always use a Netafim™ dedicated socket specially designed to
allow the required clearance.

10 D-Net 6550TM USER MANUAL
To assure proper operation of the sprinkler, a simple inspection and maintenance procedure should be
carried out regularly.
The nozzle is equiped with a handle that allows to detach and attach the D-Net™ 6550 sprinkler nozzles
quickly and easily.
Rinsing the nozzle
Frequency: Before the beginning of each growing season
Action:
1. Detach the nozzle from the sprinkler.
NOTE
To detach the nozzle, rotate and hold the 3D arm
so that it doesn't get in the way of the nozzle.
A. Manually rotate the nozzle 1/8 of a turn
counterclockwise. You should feel it snap open.
2. Clean the nozzle opening from the outside with a water jet or pressurized air.
3. Visually inspect the nozzle. If it looks damaged, replace it with a new one.
4. Reattach the nozzle. You should feel it snap into place.
MAINTENANCE
B. Manually pull the nozzle out.
SNAP!
NOTE
When detaching the nozzle, hold the 3D
arm so it doesn't get in the way.

D-Net 6550TM USER MANUAL 11
MAINTENANCE
Checking the white washer
Frequency: Before the beginning of each growing season
Action:
1. Remove the sprinkler from the stand using a 20 mm
spanner.
2. Visually inspect the white washer at the bottom of the
sprinkler.
During regular operation of the sprinkler, the white washer
gradually wears thinner. Its original thickness is 1.5 mm.
3. If the white washer has reached half its original thickness
or less, replace it with a new one using a 16 mm spanner
to open the bolt at the bottom of the sprinkler.
NOTE
Make sure to place the white washer in between
the two black washers.
4. Screw back the bolt using a 16 mm spanner.
5. Remove the old Teflon tape from the sprinkler thread and
apply 3 layers of new Teflon tape to prevent leakage.
6. Re-connect the sprinkler to the stand using a 20 mm
spanner.
NOTE
It is recommended to replace the white washer
every 2000 irrigation hours.
1
2
3

12 D-Net 6550TM USER MANUAL
D-Net™ 6550 catalog numbers
Nozzle Flow rate*
(l/h) Catalog numberSize (mm) Color code
2.3 Gray 355 60100-002300
2.5 Purple 400 60100 -002310
2.9 Orange 510 60100-002320
*Nominal flow rate at 2.5 bar working pressure
Packaging data
Model
Units
p/box
Box size
(cm x cm x cm)
Box weight
(Kg)
Boxes
p/pallet
Total units
p/pallet
Pallet weight
(Kg)
D-Net™ 6550 168 54 x 36 x 33 12.0 18 3024 240
D-Net™ 6550 sprinkler nozzles
Size (mm) 2.3 2.5 2.9
Color code
Gray Purple Orange
Catalog number 60100-002450 60100-002451 60100-002452
PARTS
D-Net™ 6550 washer
Product
description
D-Net™ 6550
white washer
22
Catalog number 60100- 001076

D-Net 6550TM USER MANUAL 13
WARRANTY
Netafim™ warrants all the components of the D-Net™ 6550 sprinkler to be free of substantial defects in
material and workmanship for a period of no more than 1 (one) year from the date of purchase.
If a defect is discovered during the applicable warranty period, Netafim™ will repair or replace, at its
discretion, the product or the defective part.
This warranty does not extend to repairs or replacements of a D-Net™ 6550 sprinkler or part resulting
from misuse, negligence, alteration, force majeure, lightning, improper installation or improper
maintenance, including any maltreatment of the D-Net™ 6550 sprinkler or any part of the irrigation
systems.
If a defect arises in your Netafim™ product during the warranty period, contact your Netafim™ supplier.
Limited warranty
This warranty is subject to the terms and conditions contained in Netafim's official warranty statement in
force at the time of application.
For the full text of Netafim's official warranty statement, go to:
http://www.netafim.com/irrigation-products-technical-materials

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