What type of nozzle is this?
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The nozzle specifications are as follows: it is required that the maximum water flow rate at a pressure not exceeding 5 kilograms (with the maximum operating pressure within the pump’s output range) be 4000 L/h (please list the nozzle’s spraying performance parameters); the material used is 2520. For a diameter of DN32, please perform the calculation for selection.
This should be calculated by the manufacturer, or there is a relevant formula for it.