Application 1.Design and Manufacture ANSI B16.1 2.Face to face ANSI B16.10 3.Flange End Dimensions BS4504 4.Working Pressure 150PSI Steam Basic Rating 5.Pressure Test API598 Main Parts and Materials Number Part Name Material 1 Body Grey Cast Iron( ASTM A126-B) 2 Bonnet Grey Cast Iron( ASTM A126-B) 3 Nut Carbon Steel( ASTM A307) 4 Bolting Carbon Steel( ASTM A307) 5 Ball Stainless steel( A182 F304) 6 Seat PTFE 7 Gasket PTFE 8 Stem Stainless steel( A182 F304) 10 Gland Flange Grey Cast Iron( ASTM A126-B) 11 Gland Bolt Carbon Steel( ASTM A307) 12 Stop Collar Carbon Steel 13 Lever Steel 14 Circlip Carbon Steel