Harbin Electric Valves won the bid to supply domestically produced high and low pressure bypass valves for the world’s first 650°C supercritical coal-fired power unit

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In mid-July, Harbin Electric Valves successfully held a technical seminar on key valves for supercritical and ultra-supercritical thermal power units in Nanjing. Recently, good news came as Harbin Electric Valves was awarded the contract to supply HT700 material high and low pressure bypass valves for the 650°C supercritical/ultra-supercritical 1-million-kilowatt units in Huaneng Yuhuan Phase IV project. This is yet another successful example of Harbin Electric Valves striving for high levels of technological self-reliance and advancing the use of domestic high-end valves. As a benchmark for efficient and clean coal power generation in China, Huaneng Yuhuan Phase IV Project is committed to advancing energy technology upgrades and sustainable, low-carbon development, with the goal of building units that have the lowest coal consumption rates in the world. This project is the world’s first 650°C, million-class high-efficiency ultra-supercritical coal-fired power generation unit; its steam parameters are the best in the world, and its various technical specifications far exceed those of boilers of the same class and type. It constitutes a **-level demonstration project for ‘clean and efficient coal utilization technologies’. The high and low pressure bypass valves made of HT700 material, used in Harbin Electric’s valves, feature advanced design solutions for temperature and pressure reduction. These designs help overcome the technical challenges associated with temperature and pressure reduction under conditions of 650°C temperature and 34 MPa pressure, ensuring the stable operation of the valves under extreme conditions. Furthermore, Harbin Electric Valves successfully resolved the technical challenges associated with surfacing HT700 material with cemented carbide in this project, providing a solid technical foundation for the stable operation of the units. As a leading enterprise in the field of high-temperature and high-pressure thermal power generation in China, Harbin Electric Valves has been dedicated for many years to the development of high-end valves for use in thermal power plants. Since 2010, it has taken the lead in carrying out the development of domestically produced valves for supercritical (ultra-supercritical) thermal power units. It is the only company in the industry to have undertaken and completed the development of all 28 types of such valves, with many of its products passing the evaluations organized by the Energy Administration. Harbin Electric Valves keeps pace with the development of the power industry; driven by technological innovation, it intensifies its efforts in developing new-generation key technologies and equipment for coal-fired power plants. It has successfully manufactured safety valves made of G115 material for the boilers of Datang Yuncheng’s 630°C supercritical units, as well as high-, medium-, and low-pressure bypass valves for coal-fired units with secondary reheating. The successful bid for this project not only adds another milestone to HHarbin Electric Valves’ achievements in the field of supercritical (ultra-supercritical) thermal power generation, but also injects new momentum into the high-quality development of China’s energy industry. In the future, Harbin Electric Valves will continue to focus on its **strategies**, meet the needs of key projects, leverage its technological advantages, accelerate the development of new forms of productive capacity, promote industrial transformation and upgrading, strengthen its core functions and competitiveness, and keep contributing its expertise and efforts to the green development of China’s energy sector.