Soval 817-025 The 2-1/2" Ductile Iron UL/FM Grooved OS&Y Gate Valve is the only ductile iron ulfm grooved osy gate valve you need for your waterworks, fire protection, well water, irrigation, sewage, industrial and plumbing flow control needs. High quality build, long lasting performance and great customer service is what has kept in business for over 50 years and we look forward to serving you into the far future for all your flow control project needs.