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This is an order for Oil project. It request to use trunnion type according to API6D standard, with fire safe and anti-static device. Trunnion mounted ball valve have two seat ring, it is two way sealing type, it could install in any direction,...
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The working principle of the ball valve : the ball valve only needs to rotate 90 degrees and a small rotating torque to reach or cut the medium of the pipe. However, recent developments have designed ball valves to provide throttling and control...