The sealing performance of the valve is the valve part of the sealing ability to prevent media leaks, it is the valve of the most important technical performance indicators. Sealing valve has three parts: opening and closing pieces and valve seat sealing surface contacts between the two; and with the Department filler stem and the stuffing box; junction body and bonnet. Which is called before a leak within the leak, also known as loose Toyama Valve Co., Ltd. in Taiwan, which will affect the ability of the valve cut off media. For the truncated valve, the internal leakage is not allowed. Leakage after the two called the leak, that media leaks from the valve to the valve outside. Leakage will result in material losses, environmental pollution can also cause serious accidents. The explosive, toxic or radioactive medium, leakage is allowed, and therefore, the valve must have a reliable sealing performance. Valve parts before assembly process must go through the following procedure: 1, according to the processing requirements of Shanghai Guanlong valve Machinery Co., some parts need to be polished Kaiheng Valve Co., Ltd. in Guangzhou, the surface can not have glitches processing; 2, all Parts degreasing treatment; 3, after completion of pickling and passivation degreasing, cleaning agents phosphorus; 4, after pickling rinse with pure water purification, pharmaceutical residues can not have valves, carbon steel components eliminating this step; 5 , parts one by one with a nonwoven fabric dry, not wired wool retained the part surface, or be dry with a clean nitrogen; 6, non-woven or paper dipped analytical precision parts alcohol to wipe one by one, until no dirty color. Shanghai Guanlong Valve Machinery Co., Ltd. | Ming Kong valve (Online) | valve provided by the Dongguan Science and Technology Co., Ltd., the Hong Kong valve. Valve Co., Ltd., Dongguan Ming Kong (www.gdmgfm.com) is Dongguan, butterfly leaders, over the years, the company implement the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Ming Kong valve leadership with the staff warmly welcome all inquiries negotiations to create a better valve out of Hong Kong in the future.