The Pressure-Tru® ZW5004 Series Pressure Reducing Valve is listed as a floor control valve, an indicating valve, and a check valve in automatic sprinkler systems. The ZW5004 is also listed as a standpipe valve for CLASS I and CLASS III systems. The valve regulates pressure under both FLOW and NO-FLOW conditions. It can be field adjusted with ease thanks to its low torque design – requiring only 9 ft lb of torque to adjust. The compact profile fits in tighter spaces and the larger handwheel ensures trouble-free operation. The ZW5004 Series delivers optimal flow performance, making it ideal for any application, retrofit or new.