... .Anti-Static Device 2.Blow-out Proof Stem 3.Fire Safe Design 4.Emergency Sealant Injector Heat Preserving Ball ValveThree Way Ball Valves ... 6DFire Safe Test API 607/API 6FAMaterials of Three-Way Ball ValvesNo.PartMaterial1BallA351-CF8, CF8M, CF3, CF3M, Duplex2BodyA216-WCB A352-LCB ... , B7M, B8, B8M15NutASTM A194-2H, 2HM, 8, 8M Heat Preserving Ball Valve