The Pressure-Tru® ZW5000 Series Pressure Reducing Valve is listed as a standpipe valve for individual hose stations in 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, while the larger handwheel operates with no trouble. The ZW5000 Series delivers optimal flow performance, making it ideal for any application, retrofit or new.