A three-piece ball valve socket weld introduction: Q61F three-piece socket weld ball valve is made with a circular channel opening and closing parts, turning ball with stem to achieve open and close the valve action, the opening and closing parts a sphere with a hole, about an axis perpendicular to the path of rotation, so as to achieve the purpose of opening and closing the channel. Second, the application range: Suitable medium: water, oil, gas and some corrosive liquid (WOG) applies stable range: -20 ~ 232 ℃ ~ 350 ℃ Nominal: 1.6-6.4MPa three, three-piece ball socket welding Features: 1. The fluid resistance. 2. The structure is simple, relatively small size, light weight, ease of maintenance. 3. sealing performance. The installation is not restricted direction, the flow of the medium can be arbitrary. 5. No vibration, noise. Fourth, the standard specification: the design and manufacture standard: GB / T 12237-2007 standard length of the structure: GB / T 12221-2005 standard socket weld: GB12224, ANSIB16.25 pressure and temperature rating: GB / T 12224-2005 test inspection standards: GB / T 13927-2008