Flanged ball valve insulation and belong to the same type of valve, the difference in its closure member is a sphere, the sphere rotating around the center line valve to achieve open, and close a valve. Ball in the pipeline is mainly used for cutting, distribution and change the direction of flow of the medium. Two-piece ball valve, three-valve, is a new ball valve Shandong BQ41F insulation is widely used in recent years, such valves are generally installed horizontally. 1. open the process works in the closed position, the ball by the stem [wiki] machinery [/ wiki] pressure effect, pressed on the seat. 2. When the valve handwheel counterclockwise models stem the reverse movement BQ41F, flat-bottom corner to make the ball disengage the seat. 3. stem continues to rise, and the interaction with the guide pin stem the spiral groove, so that the ball began to rotate without friction. 4. up to the fully open position, the valve stem to the limit position, the ball rotated to the fully open position. BQ41F two-sealed insulation Ball | BQ41F | valve manufacturers Everbright Everbright Limited provided by Shandong valve. Valve Co., Ltd. Shandong China Everbright (www.sdgdfm.com) strong, credible, Shandong Weifang ball industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Everbright valve into the brilliant and you work for a better future!