Valve type valve should normally shows the type of drive, connection type, structural features, sealing surface material, body material and nominal pressure and other factors. Standardized valve type of valve design, use, sell more convenient. Valve type and material of today, more and more Shanghai and Shanghai Valve Manufacturing Co., Ltd., model designation of the valve is also increasingly complex. Although China unified standard valve model designation, but increasingly unable to meet the development needs of industrial valves. Who can not use new valve standard numbers, each manufacturer may need to develop their own models. Public GB / T1047-2005 piping element DN GB / T1048-2005 piping components nominal GB / T11698-2008 Marine flanged metal valve structure length GB / T12220-1989 Universal Valve logo GB / T12221-2005 flange connection metal valve structure length GB / T12222-2005 Multi-turn valve actuator means connecting GB / T12223-2005 part-turn valve actuator connected to Shanghai and Shanghai Valve Manufacturing Co., Ltd. | valves | valve provided by the Dongguan Ming Kong, the Hong Kong Science and Technology Co., Ltd. Valve . Valve Co., Ltd., Dongguan Ming Kong (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 valve and you work out of Hong Kong into the brilliant, for a better future!