API 600 Cast Steel Globe Valves 1  GBF-150, Flanged Globe Valves, C.S. API 600 ANSI Class 150 Size Range : 2"~20" 2  GBF-300, Flanged Globe Valves, C.S. API 600 ANSI Class 300 Size Range : 2"~20" 3  GBF-600, Flanged Globe Valves, C.S. API 600 ANSI Class 600 Size Range : 2"~16" 4  GBF-900, Flanged Globe Valves, C.S. API 600 ANSI Class 900 Size Range : 2"~16" 5  GBF-1500, Flanged Globe Valves, C.S. API 600, ANSI Class 1500 Size Range : 2"~10" 6  GBF-2500, Flanged Globe Valves, C.S. API 600 ANSI Class 2500 Size Range : 2"~8"