【Ten Years of Rapid Development in Chemical Processing Equipment】777-2021: CHUANYI’s Production of \"Large-Diameter Elbow Bellows Control Valves\"”
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Witnessing the decade-long rapid development of chemical processing equipment, I praise the prosperity and strength of modern China. Wishing everyone a happy New Year, as well as peace and health for their families. By contributing our ideas, we can create a more lively atmosphere; HaiChuan becomes even better with your participation. Everyone is welcome to join in the forum discussions. -------------------------------------------------------------- Yunnan Nengtou Silicon Materials Technology Development Co., Ltd.’s first phase of production, with a capacity of 400,000 tons per year for silicone products and 200,000 tons per year for other products, has successfully started operations. As of March 2022, it has been running safely and stably for 5 months. The key large-diameter bellows control valves used in the critical equipment of this project were custom-manufactured to high standards by Chongqing Chuanyi Control Valve Co., Ltd.
Since this product is primarily used for regulating the temperature of silicone heat transfer oils, it requires a large diameter – with a nominal diameter of DN450 and a design pressure of PN25 – and there are extremely strict requirements regarding both external and internal leaks; to date, there have been no successful applications of this type in China. Yunnan Nengtou originally planned to purchase imported brands, but gave up due to various factors such as the pandemic, and decided to have it customized by Chuanyi Control Valve Company. Upon receiving the order, the project leader at Chongqing Chuanyi Control Valve Co., Ltd. immediately organized the R&D team to work overtime, designing meticulously and innovating boldly. Through repeated tests and validations, they overcame the challenges associated with the manufacturing process of long-stroke bellows, and successfully solved the problem of sealing technology for large-diameter valves under high pressure differences with low leakage. The product is up to 4 meters tall and weighs nearly 4 tons; 8 units can be assembled successfully at once and delivered. The product meets the international standard ISO15848 Class A requirements for micro-leakage, and it succeeded in its first trial run on site, receiving high praise from users. Based on the feedback from users on site, the valve is currently operating stably with excellent control performance, reaching an advanced level comparable to that of international similar products.
Thanks for sharing! Stay ahead of the tech curve!
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