By driving points (1) Electric Butterfly (2) pneumatic valve (3) hydraulic valve (4) manual butterfly form of the structure points: (1) central sealing butterfly valve (2) single eccentric sealing butterfly valve (3) double eccentric sealing butterfly valve (4) three eccentric metal to metal sealing butterfly valve, sealing double eccentric butterfly valve is suitable for urban heating, gas, water and other gas, oil, acid and other types of pipeline valves, as a regulator and a throttling device. Metal to metal sealing butterfly valve in addition to the surface as a large pressure swing adsorption (PSA) gas separation plant process control valve to use, but also widely used in petroleum, petrochemical, chemical, metallurgy, electric power, when the valve, the valve good alternative products. Special valves, 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!