
Wafer Double Door Check Valve Ggg40 Ductile Iron Body Pn16 Stainless Steel Disc DN250 for Water Supply Sewer Pipeline Project. GGG40 Ductile Iron Body: Constructed of GGG40 ductile iron compliant with European EN standards. Stainless Steel Disc: Equipped with SS304/316 double-disc for rapid response and anti-backflow. Compact Wafer Design: Wafer mounting saves pipeline space and allows horizontal/vertical installation. Low Pressure Loss: Double-disc structure ensures fast response and minimal flow resistance. Comprehensive Testing: Strict shell and seal pressure testing per API594 and API598 standards. Third-Party Inspection: Supports third-party inspection and pressure test reports for tender projects. Fumigated Export Packing: Protected by fumigated plywood cases to prevent damage during sea transit.