As of December 31, 2025, out of the 59 operational nuclear power units in China, 55 are equipped with NASH vacuum pumps. This "55/59" statistic is not only a testament to NASH's strength as a leader in clean green power technology but also the highest recognition of its technical quality by the Chinese nuclear power industry. Behind this trust, the NASH AT Series Liquid Ring Vacuum Pump is setting the benchmark in the nuclear vacuum field with its hardcore performance.

As the inventor of liquid ring vacuum technology, NASH has been deeply involved in the nuclear power sector for decades, consistently manufacturing to rigorous EU standards. The AT series is specifically engineered for extreme environments such as chemical processing, petrochemicals, and power generation. Its innovative "single-impeller, two-stage" design achieves high vacuum levels without the need for additional accessories. Furthermore, it efficiently condenses and removes large volumes of water vapor from process flows, perfectly matching the core requirements of condenser vacuum systems in nuclear power plants to ensure the stable operation of steam turbines.

The AT series is built for the most demanding conditions. Its unique internal structure allows it to handle heavy carryover and saturated gas streams with ease. From the Ling'ao Nuclear Power Plant Unit 1, which has operated safely for over 5,000 consecutive days, to the commercial operation of the "Hualong One" at Fuqing Nuclear Power Plant, the AT series has consistently withstood the dual tests of time and safety. It has become a critical pillar of industrial vacuum solutions for global energy infrastructure.

Technical Excellence and Specifications

Technically, the advantages of the AT series are prominent. The impeller shroud design and robust materials provide strong resistance to erosion and high durability. Movable bearing brackets make vacuum pump maintenance more convenient, while a variety of mechanical seal options adapt to different working conditions. Ranging from the TC8 to the AT3006, the series covers a wide performance spectrum to precisely match the needs of various nuclear power units.

Optimized Gas-Water Separation for Enhanced Safety and Efficiency

With 30 years of roots in the Chinese market, NASH serves as the core production base for Ingersoll Rand's Pressure and Vacuum division in the Asia-Pacific region. By sharing global R&D resources, every stage—from precision component machining to final assembly testing—follows stringent quality protocols. From the first application at the Daya Bay Nuclear Power Plant to the localized breakthroughs of "Hualong One," the AT series has evolved alongside China's nuclear industry, utilizing advanced vacuum pump technology to fortify energy security barriers.

Looking ahead, NASH will continue to drive innovation, leveraging the AT series and other hardcore products to deepen its presence in the nuclear sector. By providing more advanced and reliable products, NASH aims to safeguard the high-quality development of clean energy, ensuring that every kilowatt of green power lights up thousands of homes.