【Ten Years of Rapid Development in Chemical Processing Equipment】2857–2025: Domestic large-diameter valves make further progress; Jiangsu Shentong produces DN4100 large-diameter gate valves

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Let’s give praise and support to the achievements made in China’s chemical engineering technology and equipment; your participation in discussions is the greatest encouragement. **********************【Ten Years of Progress in Chemical Engineering Equipment】Regular updates and summaries are available; feel free to join the discussions: https://bbs.hcbbs.com/thread-3576046-1-1.html ***************** Domestic manufacturers have once again made breakthroughs in this field: Jiangsu Shentong has produced a DN4100 large-diameter plug valve. This high-pressure, fully sealed plug valve, designed for extreme operating conditions, has gone through the entire production, testing, and inspection process successfully and has now been delivered to the customer. As a result of the company’s efforts to address industry-specific challenges and overcome technical difficulties, the successful delivery of this product represents a practical test of the team’s R&D and manufacturing capabilities. It also provides core fluid control solutions that better meet the needs of large-scale projects in sectors such as energy, chemicals, and metallurgy. https://p3-sign.toutiaoimg.com/tos-cn-i-axegupay5k/8be151feeab94bacbb120ad92c21d9f3~tplv-tt-origin-web:gif.jpeg?_iz=58558&from=article.pc_detail&lk3s=953192f4&x-expires=1765151012&x-signature=wueRVFzG2IAfK7%2F3m7N3jn44pT8%3D The DN4100 large-diameter, high-pressure differential, fully enclosed plug valve delivered this time is a customized product developed by Jiangsu Shentong based on the specific requirements of its customers, leveraging the company’s years of technical expertise. The nominal diameter of the product reaches DN4100, and it is suitable for operation in high-temperature environments up to 350°C. The operating pressure range is from 1 kPa to 485 kPa (absolute pressure), making it well-suited for high-pressure differential applications in large pipeline systems. In terms of key technical parameters, the team has made repeated improvements to ensure smooth operation of the valves with no sticking ； In terms of sealing performance, tests conducted in the factory showed no visible leaks under positive pressure, and no visible leaks under negative pressure as well; the leakage rate was kept within 1×10?³Pa•m³/s, in line with the commitment to achieve \"zero leaks\" ； At the same time, the single-stroke time for opening and closing the valve is no more than 5 minutes, aiming to meet the high-efficiency requirements of continuous industrial operation. As a company that has been deeply involved in the field of specialty valves for a long time and has played a leading role in formulating multiple **/industry standards, Jiangsu Shentong always adheres to using technological innovation to meet market demands. The successful delivery of this DN4100 large-diameter, high-pressure differential, fully enclosed plug valve is a testament to the company’s extensive technical expertise and first-class manufacturing capabilities. In the future, the company will continue to focus on the research and development of valves for extreme operating conditions, increase investment in areas such as materials and intelligent control, strive for excellence through meticulous effort, and provide higher-quality products and services to support the localization of high-end equipment, thereby contributing to the high-quality development of related industries.