BD343H flange butterfly hard seal insulation Features: 1, using three-dimensional eccentric structure, seat and disc almost no friction, high temperature and high pressure valves, with more closed more tight sealing function and wear compensating seals deputy. 2, the seal is soft and hard stacked metal sheets, with the dual advantages of metal seals and elastomeric seals. 3, sealing surface heap Stellite alloy, seal wear resistance and long service life. 4, the use of different materials, both at low and high temperature, high pressure situation, both with excellent sealing performance, and can be made into two-way sealed type. 5, can provide a variety of transmission according to user requirements. 6, the electric valve can be manual or remote centralized control of the scene, and can meet the needs arts program-controlled computer. Butterfly installation techniques and how equipped with flange and bolts 1, the installation front-confirm our products performance and media flow arrow is consistent with the movement condition, and insert the valve cavity clean, brand valves, and butterfly is not allowed in the ring board with impurities foreign body, not before cleaning the disc must not be allowed to close, stainless steel valves, so as not to damage the seals. 2, the disc supporting flange is recommended to install special flange butterfly valve that HGJ54-91 type socket welding steel flange, 3, the installation location in the pipeline, the best location for the stand equipment, valves, but fail loading. Butterfly (English: butterfly valve) is closed parts (valve or disc) to the disc around the valve axis to achieve the opening and closing a valve in the main pipeline from the off and throttling. Valve opening and closing member is a disc-shaped butterfly plate in the valve body around its own axis, so as to achieve the purpose of opening and closing or adjusting. Valve Co., Ltd. Shandong Everbright production of such types of valves wide range of applications, reliable, no leakage, leakage phenomenon, frequent switching is not stuck, rusted, the majority of chemical plants, thermal power plants, steel mills, printing and dyeing, the best choice for food factory. Shandong valve _ _ Valve Valve Co., Ltd. Shandong by Shandong Everbright Everbright valve. Valve valve _ _ Shandong Shandong Shandong Everbright Everbright valve Valve Co., Ltd. (www.sdgdfm.com) this year introduced a new upgrade, the above picture is for reference only, please call Tel picture on this page or to obtain the latest information, Contact: Manager Ma.