Product Name: Trunnion Valve Balls with Tube  Wedled inside Specifications: 2”-64” ( DN50mm~1600mm) Pressure Rating: Class 150~300 (PN16~25) Materials: SS304/L, SS316/L, etc. Surface Treatment: polishing Application Field: for large and medium-sized trunnion mounted ball valves which are used in oil, natural gas, water treatment, pharmaceutical and chemical, heating and other fields. Packing: blister plastic box for small balls, plywood cases. Can be customized according to drawings.