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*1 Vertical difference between the the
pump and the target point
*2 Drip and mini sprink irrigation=10-15 ,
Sprinkler=20-30 , Releasing and furrow irrigation
with free flow=10
*3 Pressure loss on entire line = Main pipe+
lateral
*4 Pressure loss on fittings
*5 If deepwell; dynamic pull height, if brook
or lake; vertical difference between the the pump
and water level
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