Jiangsu Haifa Machinery Manufacturing Co., Ltd.

In August 2026, the's first domestically manufactured CAP1000 50Hz canned motor reactor coolant pump completed fabrication and was shipped to the Guangdong Lianjiang Nuclear Power Project, marking a major breakthrough in China's independent development of key high-temperature, high-pressure seal-less pump equipment. The CAP1000 reactor coolant pump (RCP) adopts a canned motor pump structure, eliminating the traditional rotating shaft seal design and significantly reducing the risk of medium leakage. According to publicly available information from the U.S. NRC, AP1000 units also utilize canned motor main pumps that directly interface with the steam generators, reducing loop pressure drop and enhancing the overall operational reliability of the nuclear island system. The domestically developed 50Hz canned main pump was forward-engineered to match China's grid frequency, with targeted optimization of the hydraulic model, electromagnetic system, and internal flow field, successfully passing a 92-day long-duration endurance test. Looking at the global nuclear power market, AP1000 technology continues to expand—by July 2026,6 units had been put into operation and  units were under construction—establishing high-reliability, long-life, low-maintenance rotating pump equipment as the core development direction for nuclear power equipment worldwide. The design philosophy of nuclear canned motor pumps—leak-free, resistant to high temperature and high pressure, and requiring minimal maintenance—is also progressively being transferred to downstream petrochemical, hydrogen energy, and fine chemical industries. Jiangsu Haifa Machinery Manufacturing Co., Ltd., rooted in pump equipment manufacturing, leverages years of technical accumulation to develop API610 chemical process pumps, canned motor pumps, API685 magnetic drive pumps, and high-temperature high-pressure pump series, providing highly reliable sealed delivery pumping solutions for refining, new energy, hydrogen energy, and special corrosive media applications. For more product technical information: www.jslgpump.com

Q: What are the core technical features of the CAP1000 canned motor main pump?
A It adopts a canned motor seal-less structure, eliminating shaft seal leakage risks and suitable for continuous long-term operation under high temperature and high pressure.

Q Can nuclear canned motor pump technology be applied to the chemical industry?
A The leak-free, high-temperature, high-pressure resistant design philosophy is transferable; for chemical applications, Jiangsu Haifa canned motor pumps and API685 magnetic drive pumps can be selected.

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