Installation position of the valve Valve Co., Ltd. in Guangzhou Kaiheng be easy to operate; even with some temporary difficulties Shanghai and Shanghai Valve Manufacturing Co., Ltd., but also for the sake of the operation of permanent staff. The best valve hand wheel and chest aligner (generally operate from floor 1.2 meters) valve, so that the opening and closing valves more provincial effort. Landing valve hand wheel should be facing up, do not tilt, so the operation awkward. Wall machine by the valve device, but also to set aside an operator standing room. To avoid his back operation, especially in acid, toxic media, otherwise very safe. Do not flip gate (ie handwheel down) Shanghai Guanlong valve Machinery Co., otherwise it would be retained in the media long bonnet space, easy to stem erosion, but also for some of the technological requirements of the taboo. At the same time replace the packing extremely inconvenient. GB / T 1047-2005 standard, the valve nominal diameter just a logo, represented by a combined symbol "DN" and numbers do not represent the nominal size of the valve diameter measured values, the actual diameter value of the valve consists of the standards-related provisions generally found (in mm) not less than 95% of the nominal value of size. Nominal size fraction Metric (symbol: DN) and imperial (symbol: NPS), GB valves metric, the US standard valve to English. Tianjin Tanggu Watts Valve Co., valves, valve out of Hong Kong, the Hong Kong valve provided by the Dongguan Science and Technology Co., Ltd. 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!