Performance; Water Trajectory; Head Loss - Netafim SPINNET Handbook

MICRO-SPRINKLERS/EMITTERS ASSORTMENT
WARNING
When handling acid, always observe the product safety instructions and avoid acid coming in
contact with the crop, the soil/substrate and the environment.
• Micro sized droplets, at a relatively low pressure of 4.0 bar the CoolNet Pro™ uniformly distributes an
average droplet size of 65 micron.
• Specially designed for cooling, humidifying and rooting tables.
• It is strongly recommended to connect the CoolNet Pro™ to the distribution pipe with a SSPE (super soft PE)
micro-tube, a specifically designed stabilizer and AD (anti-drain) valve that will prevent distribution pipe
drainage.

Performance

Flow rate calculation
Nozzle Nozzle size
(Model) (mm)
5.5 0.51
7.5 0.61
14.0 0.88

Water trajectory

Trajectory height at a distance (D) of 20 cm from emitter head
Nozzle (Model)
5.5
7.5
14.0
Pressure: 4.0 bar

Head loss

Head loss (bar) in the emitter stand micro-tube and AD valve
Flow
10 l/h
rate ›
15 0.001 0.005 0.01 0.002 0.015 0.02 0.004 0.020 0.02 0.006 0.040 0.05 0.009 0.050 0.06
30 0.001 0.005 0.01 0.003 0.015 0.02 0.007 0.020 0.03 0.012 0.040 0.05 0.017 0.050 0.07
60 0.002 0.005 0.01 0.007 0.015 0.02 0.014 0.020 0.03 0.024 0.040 0.06 0.035 0.050 0.09
90 0.003 0.005 0.01 0.010 0.015 0.03 0.021 0.020 0.04 0.035 0.040 0.08 0.052 0.050 0.10
120 0.004 0.005 0.01 0.014 0.015 0.03 0.028 0.020 0.05 0.047 0.040 0.09 0.070 0.050 0.12
SD conn. size
(mm)
1.20
1.46
1.46
T. Trajectory height (cm)
10
10
13
20 l/h
Constant Exponent
K* X*
1.03 0.45
1.40 0.45
2.66 0.45
D
30 l/h
Head loss (bar)
UPSIDE-DOWN MICRO-EMITTERS HANDBOOK 33
*The constant K and
exponent X enable real flow
rate calculations at different
working pressures using the
formula:
Q (l/h) = K*(P(meter)^X).
T
40 l/h 50 l/h