2-1/2 Ductile Iron Flanged x Flanged Gate Valve, Non-Rising Stem with BunaThe 2 1 2" Ductile Iron Flanged x Flanged Gate Valve, Non Rising Stem with Buna is a durable and high performance shutoff valve designed for water distribution, wastewater, and industrial piping systems. Featuring a non rising stem (NRS) design, this valve is ideal for confined spaces where vertical clearance is limited. The Buna N (Nitrile) seat provides excellent sealing, ensuring leak proof operation and long lasting durability. Specification