【Major Equipment in the Chemical Engineering Sector】098 – Key Valves Used in the Super-large Diameter Pressure Regulating Devices of the China-Russia East Gas Pipeline

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The past decade has been a period of rapid development for China’s chemical industry, marked by the emergence of many new processes, products, and equipment. There has also been significant progress in China’s chemical processing equipment, which has contributed to the swift advancement of the petrochemical sector. Here, we have compiled some of the achievements and breakthroughs made by Chinese equipment manufacturers in terms of larger-scale production and greater use of domestic equipment. We invite everyone to share their insights and discuss these topics together; let’s cheer for Made in China and support the development of chemical processing equipment! *********************************** The key valves for the extra-large-diameter pressure regulating devices, developed and manufactured in 2019 by Ningxia Wuzhong Instrument Co., Ltd., played an important role at the Heihe terminal, where natural gas enters the country. The key valves for the extra-large diameter pressure regulating devices, developed and manufactured by this company, are used on China-Russia East Gas Pipeline, which has the highest specifications and pressures in China. These valves serve to regulate pressure steadily and prevent overpressure conditions, making them essential equipment for ensuring the safe operation of gas transmission at such large diameters and high pressures. In February 2017, the company signed a research, development, and manufacturing agreement with China National Petroleum Pipeline Corporation for key valves used in ultra-large diameter pressure regulating devices. The two parties worked together on research, design, and manufacturing to achieve domestic production of large-diameter safety shut-off valves and large-diameter service pressure regulating valves, thereby reducing construction costs and shortening the construction timeline. ” Chang Zhandong said that when developing these products, there were no precedents for such development in China, and no technical references available. Over a period of more than two years, the company overcame various challenges such as large diameters, high pressures, and low temperatures through continuous experimentation and self-improvement, and finally managed to develop and manufacture six sets of ultra-large diameter valves essential for use in projects. These valves were successfully applied in the China-Russia East Route natural gas pipeline project.