Automatically adjust to changes in flow and pressure, maintain a consistent operating pressure over a wide range of flows, excellent performance at maximum flows, choice of ball valve control or slide valve, combination of fog and straight stream, fized moulded teeth or stainless steel spinning teeth, low throughlife maintenance due to the use of quality materials, Comforms to all aspects of NFPA 1964 (spray nozzles, shutoff and tips) 324: Automatic Nozzle, 50-350 GPM (190-1325 LPM), Slide valve control, Fixed teeth, 2.5" inlet, Service kit 1012