【Ten Years of Rapid Development in Chemical Engineering Equipment】High-pressure hydrogen service gate valves and high-temperature, high-pressure steam gate valves models 1477–2024 have passed product certification

Thread Content

Happy New Year 2024 **********************【Ten Years of Rapid Development in Chemical Processing Equipment】A continuously updated summary post is available; feel free to join the discussions at https://bbs.hcbbs.com/thread-3576046-1-1.html (Source: Haichuan Chemical Industry Forum) ***************** In February 2024, the China General Machinery Industry Association organized an evaluation meeting in Dalian for a series of products namely \"high-pressure hydrogen service gate valves and high-temperature high-pressure steam gate valves\", which were developed by Dalian Dagao Valve Co., Ltd. The appraisal meeting was hosted by the China General Machinery Industry Association. Sui Yongbin, former chief engineer of the China Machinery Industry Federation, served as the head of the expert panel for the evaluation. The panel was composed of experts from organizations such as the China Machinery Industry Federation, Sinopec’s refining and chemical division, China National Petroleum Corporation’s refining subsidiaries, Sinopec’s Guangzhou branch, East China Design Institute, Hefei General Research Institute, and Sinopec’s Shanghai branch. The experts present inspected the factory production and testing sites, witnessed some of the product tests conducted in the factory, listened to a summary report on the development efforts by the responsible team, and reviewed relevant technical documents. The expert panel of the appraisal committee believes that the high-pressure hydrogen service gate valve series has adopted an overall forging process for the valve body, ensuring the quality of the valves ； A dual-guidance structure for the gate and valve stem has been developed to reduce friction on the gate and the operating torque ； A pressure self-sealing structure combining metal and graphite has been developed to improve sealing reliability under fluctuations in medium pressure and temperature. The high-temperature and high-pressure steam gate valve series features a wedge-type dual-gate plate adjustable structure, which enhances the sealing reliability of the valves under high-temperature and high-pressure conditions ； A special process for surfacing high-hardness cemented carbide has been developed, improving the service life of valves. The appraisal committee believes that the two series of products possess independent intellectual property rights, and their overall performance is at an advanced level comparable to that of international counterparts; it recommends their widespread adoption.