BD343H hard sealing flange insulation jacket butterfly valve, also known as Shandong flange butterfly hard seal insulation is in general three eccentric metal seal butterfly valve on the basis of the external welding a metal jacket, butterfly valve in insulation both sides of the body fitted jacket interface, culvert into superheated steam or other gases, in order to prevent the media solidified or crystallized state at room temperature. Butterfly valve flange insulation than ordinary metal seal butterfly want freshman to two specifications, mainly used in petroleum, chemical, metallurgy, pharmaceutical and other types of systems. BD343H flanged valve multi-level hard sealed insulation thanks to the steam jacket insulation / cold (we can use hot water, oil or other liquids, gases, thermal / cold) butterfly, so even if the outside temperature is below freezing, the valve still operational flexibility to ensure that the media can be closed pipelines can start. The advantage is that other control valves are not available, a heavy oil pipeline ideal control valve. Shandong flange butterfly hard seal insulation, Everbright valve (certified), provided by the Shandong Everbright Limited butterfly valves. Valve Co., Ltd. Shandong China Everbright (www.sdgdfm.com) Shandong Weifang, ball leader, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Everbright valve leadership with the staff warmly welcome all inquiries negotiations to create a better future for China Everbright valve.