Trunnion mounted ball valve is used to cut off or connect the media in various pipelines of Class150 Class2500. The valves made of different materials are suitable for various media such as water, steam, oil, liquefied gas, natural gas,coal gas, nitric acid, oxidizer, urea and etc. The driving modes include manual operation, worm and worm gear transmission,pneumatic operation and electric operation. The connection ends can be flange or butt welding.