Application 1.Design and ManufactureDIN3357 2.Face to faceDIN3202 3.Flange End DimensionsDIN2533 4.Nominal Pressure1.6MPa 5.Pressure TestDIN3230. Main Parts and Materials NumberPart NameMaterial 1BodyGrey Cast Iron(GG25 or GGG40) 2BonnetGrey Cast Iron(GG25 or GGG40) 3NutCarbon Steel 4BoltCarbon Steel 5BallStainless steel(x10cr13) 6SeatPTFE 7StemStainless steel(x10cr13) 8GlandCast Iron(GG25 or GGG40) 9Gland BoltCarbon Steel 10Stop CollarCarbon Steel 11LeverDuctile Iron(GGG40).