Large DN200 Wafer Double Door Check Valve Ggg40 Ductile Iron Pn16 Anti-Backflow Non Return Valve for Urban Water Infrastructure

Large DN200 Wafer Double Door Check Valve Ggg40 Ductile Iron Pn16 Anti-Backflow Non Return Valve for Urban Water Infrastructure. GGG40 Ductile Iron Body: Ensures high mechanical strength and durability for long-term underground service. Stainless Steel Double-Door Disc: SS304/316 material provides stable anti-backflow performance for water and sewage. Wafer Compact Design: Reduces installation cost and space requirements compared to swing valves. Wide Size Range: Available in DN50 to DN1500 with PN10 and PN16 pressure ratings. Fast Shipment for Stock Sizes: Popular sizes like DN250 can be shipped within 7-15 days. Third-Party Inspection Support: Accepts third-party testing and pressure tests for tender project orders. Complete Export Documentation: Includes pressure test reports, packing lists, and commercial invoices.