To use the nozzle size calculator: Select the type of unloader on your unit. Enter your units flow in gallons per minute in the Pump Flow box. Enter the working pressure of your unit in the Pressure box. Click the Calculate button. The required nozzle orifice size will be shown in the Nozzle Size box.

 Type of unloader:  Pressure Trap.
                    Flow Actuated. (5% bypass)
    Pump Flow GPM: 
     Pressure PSI: 
      Nozzle Size:         Maximum pressure:    0 PSI