【Ten Years of Rapid Development in Chemical Processing Equipment】Domestic Class 4500 ultra-high pressure globe valves for harsh operating conditions, 2012–2023

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Ten years of rapid development in chemical technology – praising the prosperity and strength of modern China. This is just a starting point; more participation from everyone will make things even more lively. HaiChuan becomes even better with your involvement; we welcome everyone to take an active part in the forum discussions. Be careful with fire risks as the heat increases in July. ---------------------------------------------- In 2022, domestically produced Class4500 ultra-high pressure globe valves were successfully used in the BDO (1,4-butanediol) production project, while domestically made Class4500 ultra-high pressure check valves were utilized in the ABS (acrylonitrile-butadiene-styrene) plastic production process. Ultra-high temperature globe valves are now being produced on a large scale. 　　In 2021, domestically produced NPS 16 Class1500 high-pressure large-diameter track ball valves for Zhenhai Refining & Chemical’s 4 million tons per year hydrocracking unit passed the joint exit inspection ； RTSV butterfly valves for adsorption separation in domestic p-xylene plants have been put into industrial use. 　　In 2020, the domestically produced NPS6 Class900 high-pressure oxygen isolation ball valve passed the evaluation ； Domestic prototypes of 3-inch and 10-inch large-scale aromatic hydrocarbon adsorption and separation programmable control valves have passed the evaluation by experts organized by Sinopec... The most important aspect of local production of such valves is to achieve their production in conditions that are demanding. Some imported valves are not only expensive but also have long after-sales service periods, which even affect the progress and schedules of some large-scale chemical projects in the country. “The key to solving this problem is to focus on the challenging operating conditions as the crucial factor, and to develop domestic valves. 　　To this end, Shanghai Kaiweixi has established and gradually expanded its engineering and technical team, focusing on improving its engineering capabilities. Currently, the team has 66 employees, accounting for about a quarter of the total workforce. At the same time, the company has also established an enterprise engineering testing center, which includes a surface engineering laboratory and two 100,000-class clean assembly testing chambers. It is equipped with 180 sets of various key processing and testing equipment, such as ultra-low and ultra-high temperature testing devices, ultra-high temperature gas-solid wear resistance testing devices, and ultra-high pressure gas functional testing equipment. To ensure the quality of mass production of domestic valves designed for harsh operating conditions, Shanghai Kaiweixi is also equipped with high-precision machines such as four-axis vertical machines, four-axis gantry machines, and three-axis horizontal machines. 　　Through years of research, Shanghai Kaiweixi has obtained dozens of **product patents, and in collaboration with relevant organizations, it has mastered more than a dozen core technologies related to valves designed for harsh operating conditions. Among these, the core high-pressure hydrogen-related technologies have been successfully applied in high-pressure hydrogen handling units and hydrogen production facilities, with over 20,000 valves in operation, making the company a strategic supplier for the localization of high-pressure hydrogenation valves in Sinopec. The high-pressure, large-diameter track ball valves developed in collaboration with Shenhua Ningxia Coal Industry Group have successfully filled a gap in this field in China. At present, the service life of the valves produced by Shanghai Kaiweixi is equivalent to, or even significantly exceeds, that of some similar imported products. The delivery time is generally only 3 months, a reduction of 5 months on average, and they offer a clear price advantage.