Features: 1, the product uses a unique three-eccentric structure design, not only combines the advantages of the double eccentric structure, but also has excellent performance eccentric angle. 2, the stem axis line and the center line of the eccentric amount of the body is very small, so butterfly good looks, easy to install, while reducing flow resistance, valve type, to improve the flow capacity, plays the energy conservation effect. 3, seal with multi-layered composite materials with high hardness, corrosion resistance is strong, flexible, and reliable sealing performance, 100,000 times superior switching characteristics without leakage. BD343H hard sealed insulation flange butterfly valve stem through-rod structure, after quenching, the valve brand, have good mechanical properties and corrosion resistance, Shandong cast steel valves, scratch resistance. When the valve opening and closing the valve stem rotates not only for the lifting operation, the valve stem packing is not easy to destroy, reliable sealing. And disc taper pin fixed, extended end to prevent out design, in order to avoid the stem and disc connected to the valve stem when the collapse of the accident at the break. 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 steel valves, valve, the valve is provided by Shandong Shandong Everbright Everbright Valve Co. Shandong Everbright Valve Co., Ltd. (www.sdgdfm.com) located in Weifang City, Shandong Province, Cravens District Bao Tong Street North Makers Industrial Park. Scraps and development in the wave of market economy, the current Everbright valve has a high profile in the ball, and enjoys a good reputation. Everbright valve made whole network business alliance certification, marking our service and management level has reached a new height. Everbright valve staff willing to work with all people of insight and common development, for a better future.