Fire Nozzle(Maxmatic Nozzle): Automatic (constant pressure, variable flow, constant gallonage, flow does not change with pattern Fire Nozzle(Maxmatic Nozzle):Flow Control Method: Automatic (constant pressure, variable flow, constant gallonage, flow does not change with pattern)Flow Rate: 100-500 gpm (400-2000 l/min)Pressure:100 psi (7bar)Valve Design:Ball Valve (Nylon) fire nozzle