Fixed Ball Ball: The ball valve is fixed, no movement after compression. All with a floating ball valve fixed valve seat, by medium pressure Shandong valve seat produce movement, so that the ball seals pressed on, in order to ensure the seal. Usually with the ball, the lower shaft with V-ball bearing distributors, operating torque small V-ball manufacturers, suitable for high pressure and large diameter valves. To reduce the valve operating torque and increase the reliability of the seals, valve seals has emerged in recent years, both the pressure injection of a special lubricant between the sealing surface to form a layer of film that enhances the seal, but also reduce operating torque V-ball, more suitable for large diameter high pressure valve. The main features of V-ball as follows: (1) switch quickly and easily (2) sealing Currently, the vast majority of ball valve seat is composed of an elastic material such as polytetrafluoroethylene, metal sealing with a metal material clap Vice, commonly referred to as a soft seal. In general, the soft seal tightness easily guaranteed, and the sealing surface of the machining accuracy and surface roughness requirements are not very high. V-ball, Shandong, China Everbright valve manufacturer, V-ball offer from Shandong, China Everbright Limited valve. Valve Co., Ltd. Shandong China Everbright (www.sdgdfm.com) Shandong Weifang, ball leader, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Everbright valve leadership with the staff warmly welcome all inquiries negotiations to create a better future for China Everbright valve.