Butterfly installation techniques and equipped with flange and bolts of how to use the need to adjust the flow, there are worm gear box control. Open and close the valve more frequently, about two months time Weifang valve, open worm cover, check whether the normal butter, should maintain the right amount of butter. Check the connection site requires compression valve, which is to ensure filling of bees, but also to ensure a flexible stem rotation. Quality objectives: one, to make every effort to provide 100% qualified products and satisfactory service to customers; Second, the use of advanced technology and equipment, Shandong valves, product quality to maintain the domestic advanced level Weifang flange butterfly hard seal insulation, and to foreign advanced level par. Valve Co., Ltd. Shandong China Everbright production of such types of valves wide range of applications, reliable quality, no internal leakage, leakage phenomenon, frequent switching is not stuck, rust, the majority of chemical plants, thermal power plants, steel mills, printing and dyeing, the best choice of food plants. _ Flange seal butterfly valve manufacturer butterfly _ 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!