10 Ductile Iron Flanged x Flanged Gate Valve New York City Outside Screw & Yoke American Water Works AssociationThe 10 Ductile Iron Flanged x Flanged Gate Valve New York City Outside Screw & Yoke American Water Works Association is designed for fire protection, municipal water systems, and industrial applications. The OS&Y design features a rising stem, providing a clear visual indication of whether the valve is open or closed, making it ideal for fire protection systems. This valve meets AWWA standards and is approved for use in New York City (NYC).