Features: .Design & Manufacture: GB .Face to Face Dimension: GB .Flanged Dimension: GB4216 .Inspect & Test: GB9113, API598 .Pressure Ratings: PN10 & PN16 Standard Materials Construction: .Body: Cast Iron, Ductile Iron .Seat: Stainless Steel .Bracket: Stainless Steel .Lever: Stainless Steel .Piston: Rubber .Floating Ball: Stainless Steel .Bolts: Galvanized Steel