Butterfly (English: butterfly valve) is closed parts (valve or disc) for disc gate insulation around the valve axis to achieve the opening and closing a valve in the main pipeline from the off and throttling. Butterfly is a disc-shaped opening and closing parts of the disc, in the valve body rotating around its own axis, so as to achieve the purpose of opening and closing or adjusting. Valve fully open to fully closed is usually less than 90 °, butterfly and butterfly stroke itself is not self-locking gate capacity, in order to position the disc flange forged steel valve should be installed on the stem worm reducer. Using worm reducer, not only can make the disc has a self-locking capability, so that the disc stopped at any position, but also to improve the operating performance of the valve. Industry-specific characteristics of butterfly valves to high temperature, higher pressure range, the valve nominal diameter large, carbon steel valve body, valve plate seal with a metal ring to replace the rubber ring. Large temperature valve welded steel plate manufacturing, mainly for duct smoke and gas pipelines hot medium. To urge the valve made after the State Council issued the "Opinions on Accelerating the development of the equipment manufacturing industry," according to the state departments of major equipment requires the State to make, has made a series of major deployment, led by the National Development and Reform Commission China Machinery Industry Federation and the China General Machinery Industry Association, together with the deployment of developed valve localization of major equipment programs in related fields, and many times in coordination with the relevant departments, and now localization of the valve in the valve industry in China has formed a consensus. Actively adopt international standards for product design; excellent absorption of foreign design structure (including patents); product testing, performance testing carried out in strict accordance with international standards; absorption of foreign advanced production technology and experience of great importance to research and promote the use of new materials; clarify imports high parameters valves technical parameters and operating conditions, such as speeding up the localization process, and promote valve product updates, the full realization of localization only way valve. With the accelerated pace of the valve industry restructuring, the future of the industry will be the safety valve product quality and product competition between brands, products to high-tech, high-parameter, strong corrosion resistance, high-life direction flange soft sealing valve, only through continuous technological innovation, new product development, technological innovation, in order to gradually increase the level of technology products to meet domestic devices supporting the full realization of the valve localization. Electric flange steel gate valve, gate valve, the valve is provided by the Hong Kong Ming Ming Port Valve Co., Ltd., Dongguan. Port Valve Co., Ltd., Dongguan Ming (www.gdmgfm.com) strong, credible, butterfly and other industries in Dongguan, Guangdong has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead the next port of the valve and you hand into the brilliant, for a better future!