Patent ID: 8794539

Claim:
An apparatus for operating a group of normally closed, pressure compensated drippers at relatively low liquid flow rates, comprising: a flow control unit; a pulsating device for converting a low continuous liquid flow rate entering said pulsating device through the flow control unit to a high intermittent and pulsating flow rate ejected through an outlet of said pulsating device; a manifold having an inlet connected to the outlet of said pulsating device; a group of normally-closed, pressure-compensated drippers connected to said manifold; wherein said pulsating device is configured to convert a low continuous flow rate of liquid entering the pulsating device through the flow control unit to a high intermittent and pulsating flow rate that ejects from its outlet and flows from its outlet through the inlet of said manifold and through said normally-closed, pressure-compensated group of drippers connected to said manifold, and out from said drippers, at a pressure-compensated low flow rate.