Netafim SPINNET

16 UPSIDE-DOWN MICRO-EMITTERS HANDBOOK
EXAMPLE
Friction loss in the hanging micro-tube and accessories
Where:
Micro-tube
length (cm)
Flow rate (l/h)
50 120 200
Head loss (bar)
Micro-
tube
AD
valve
Complete
unit
Micro-
tube
AD
valve
Complete
unit
Micro-
tube
AD
valve
Complete
unit
15 0.009 0.05 0.06 0.041 0.16 0.20 0.100 0.38 0.48
60 0.035 0.05 0.08 0.16 3 0.16 0.32 0.400 0.38 0.78
120 0.070 0.05 0.12 0.325 0.16 0.49 0.799 0.38 1.18
Micro-tube
OD 6.5 mm
ID 4.0 mm
MICRO-SPRINKLER/EMITTER SELECTION
E. micro-sprinkler/emitter water trajectory
1. Elevation of micro-sprinkler/emitter nozzle above surface
2. Elevation of max. trajectory height above micro-sprinkler/emitter nozzle
3. Distance of max. trajectory height from micro-sprinkler/emitter nozzle
4. Max. wetted distance (dependant on nozzle elevation above surface).
Trajectory height above micro-sprinkler/emitter nozzle
The maximum trajectory height above the micro-sprinkler/emitter nozzle is relevant in the following cases:
• To prevent wetting the net or the ceiling.
• To prevent dripping from the distribution pipe.
• To prevent wetting the lighting fixtures.
2
3
1
4