
ISO5752 Industrial Control Full EPDM Rubber Coated Lining Water Gas Duo Dual Plate Double Door Wafer Type Butterfly Check Valves From Tianjin Worlds Valve China. Wide Material Selection: Body options include Cast Iron, Ductile Iron, Carbon Steel, Stainless Steel, and AL-Bronze. Diverse Seat Materials: Available in NBR, EPDM, HEPDM, Neoprene, Hypalon, and Natural rubber for various media. Comprehensive Coating Options: Offers FBE Epoxy Coated finish for enhanced corrosion resistance and durability. Flexible End Standards: Supports PN6-25, 150lb, JIS5K, AS2129, and other international flange standards. Superior Tightness Design: Conical, lapped-in hardfaced seating ensures self-alignment and prevents backflow. Water Hammer Prevention: Disc pivots through a small arc to eliminate water hammer and ensure smooth operation. Vertical Piping Capability: Valve can be effectively used in vertical piping with upward flow direction. Pre-Assembly Testing: Seat-hinge-pin-disc assembly tested outside valve before welding to eliminate leakage.