China Nace Mr0175 API 6D Forged Steel Split Body Zero Leakage Metal Sealed Seat Trunnion Mounted Ball Valve with Fire Safe Blowout-Proof Stem Design, Find details about China Valve, Ball Valve from Nace Mr0175 API 6D Forged Steel Split Body Zero Leakage Metal Sealed Seat Trunnion Mounted Ball Valve with Fire Safe Blowout-Proof Stem Design