Ball valve having a 90 degree rotation of the operation, the cock body is a sphere, a circular through-hole or channel through its axis. Ball in the pipeline is mainly used for cutting, distribution and change the direction of media flow valve Shandong, it only needs to be rotated 90 degrees with the operation and a small torque can be closed tightly. Most suitable valve do switch off the valve, but the recent development has been designed to make it a ball and control the flow of the throttle, such as V-ball. Ball advantages: 1. Fluid resistance, full bore valve basically no flow resistance. 2. Simple structure, small size and light weight. 3. Compact and reliable. It has two sealing surfaces, and valve sealing surface material widely used in a variety of fluorine plastic, sealing, and can be completely sealed. In the vacuum system has also been widely used. 4. Easy operation BQ71F Wafer insulation valve manufacturers, opening and closing rapidly, from fully open to fully closed as long as 90 ° rotation of the clip-on insulation Shandong BQ71F ball, facilitate remote control. 5. BQ71F easy maintenance, valve structure is simple, seals are generally activities, the removal replacement is more convenient. Weifang valves, valve Everbright, BQ71F Ltd provided by Shandong Everbright 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.