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Sunday, April 10th 2016, 5:25pm

Author: Rowdie

Pump looses suction

Last year I installed a new system. I have a 4" line coming from the irrigation canal 1/4 mile away with a elevation drop of about 25' feet to feed my 2 hp pump. This drop gives me about 4-6 PSI on the inlet. I have 4 stations of rain birds with maxi paws with 10- 12 heads each. The heads are feed by a 1 1/4" line to 1 " laterals then to the heads. After about 25- 30 minutes of pumping without any problems, I can hear the pump making noises ( not smooth as when water present ) the pressure drops...