【Ten Years of Rapid Development in Chemical Processing Equipment】The domestic production of large-diameter forced-seal ball valves for the period 1149–2023 passed industrial acceptance tests

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Looking at the ten-year development of chemical engineering technology, we praise the prosperity and strength of modern China. By sharing our insights, we encourage more people to participate and make the discussion more lively. HAICHUAN becomes even better with you here. [Ten Years of Progress in Chemical Engineering Equipment] – A continuously updated summary thread; feel free to join the discussions: https://bbs.hcbbs.com/thread-3576046-1-1.html. It is important to enhance quality awareness and promote high-quality development. ----------------------------------------- Recently, the NPS24 Class 900 forced-sealing ball valve, which is part of the research project undertaken by a construction project management company aimed at localizing the production of large-diameter forced-sealing ball valves and axial flow control valves, underwent on-site testing and expert evaluation at the Changji test site. It successfully passed the industrial trial assessments. The appraisal committee believes that the large-diameter forced-sealing ball valve developed for this project possesses independent intellectual property rights, fills a gap in domestic technology, and its key technical parameters have reached the advanced level of similar international products; it can therefore be widely used in natural gas metering and calibration systems. Forced-seal ball valves are used in measurement pipelines related to metering and calibration, to ensure that these pipelines can be closed reliably when needed, thereby achieving zero leakage and guaranteeing the accuracy and reliability of the metering and calibration results. They are used very frequently during such operations, and therefore require reliable product quality and stable performance, as well as features such as accurate adjustment, rapid response, a wide adjustable range, and stable flow conditions. Previously, the largest size of domestically produced forced-sealing ball valves was NPS16 Class 900; large-diameter forced-sealing ball valves still relied on imports. If foreign manufacturers were unable to supply spare parts for maintenance in a timely manner, it would directly affect the proper functioning of these valves, and consequently impact the normal operation of the metering stations. As **Pipeline Group accelerates its efforts to implement the strategy of creating a unified national network, oil and gas pipeline construction is developing rapidly, and there is an increasing demand for domestic production of equipment. The research project aimed at developing domestically produced large-diameter forced-seal ball valves was initiated in order to address the reliance on imported valves for such applications at the group company’s metrology and calibration stations, thereby ensuring proper maintenance and normal operation of these valves in the long term. This project is carried out by a construction project management company in collaboration with leading domestic manufacturers; it is an important domestic production initiative for the group company. Its goal is to achieve full domestic production of large-diameter forced-sealing ball valves for long-distance natural gas pipelines through the development of new products, as well as industrial testing and evaluation. To ensure progress in the development of key core technologies for domestically produced products and to guarantee product quality, the project management company selected leading domestic enterprises to carry out the development work; a total of six enterprises participated in the development of the NPS24 Class900 forced-sealing ball valves ； After completing the product exit inspection, Chengdu Hangli, Zigong Xindi Per, Chengdu Chenggao, Sichuan Jingkong, Zigong Zigao, and Wuzhou Valves conducted industrial tests on their developed products at the Changji Test Site from September 4th to 7th. These tests included inspections of the valves’ performance under actual field conditions, noise measurement, verification of the valves’ sealing properties, full pressure difference switch tests, and reverse operation tests; all of these met the requirements outlined in the \"Industrial Test Guidelines for Force-Sealed Ball Valves\". Upon passing this acceptance, the developed product will be deployed and applied at the **Shenyang and Guiyang branches of the high-flow metering station, as well as on Line 3 West, Line 4 West, and in subsequent gas transmission pipeline and metering station projects. The successful development of this product and its implementation in practical applications will effectively address the problems previously caused by reliance on imported valves, break technical monopolies, enhance reliability, and reduce the purchase cost per unit for valves of the same specifications, thereby bringing significant economic benefits. It is also an innovative practice by the construction project management company to implement the group company’s strategy of accelerating innovation-driven development and enhancing the capacity for domestic production of pipeline equipment; it holds great significance for ensuring the safe, economical, and efficient operation of pipelines.