China Trunnion Mounted Ball Valve: Cast Steel Trunnion Ball Valves, 2-PC, 3-PC Reduced Bore, Class 150-2500, Grades WCB, WCC, LCB, LCC, ASME B16.34. Features: Side Entry/Top Entry. Two/Three pieces Design. Full & Reduced Bore. Anti-stactic Device. Blow-out Proof Stem. Fire Safe Design.