962012 by Midland | AWWA C508 Swing Check Valve Flanged | Size: 12 | Ductile IronPart Number Part Material 1 Valve Body Ductile iron 65 45 12 2 Bonnet Ductile Iron 65 45 12 3 Sling Ring Carbon Steel Zinc Plated 4 O Ring NBR 5 Hinge Pin 304 Stainless Steel 6 Hinge bushing Brass ASTM B36 7 Seat Ring Bronze ASTM B62 8 Disc Seat Bolts 304 Stainless Steel 9 Retainer Washer Bronze ASTM B62 10 Disc Seat Ring EPDM 11 Disc Ductile Iron 65 45 12 12 Ctapper Arm Ductile Iron 65 45 12 13 Stud Bushing Bronze ASTM B36 14 O Ring NBR 15 Nuts 304