Jiangsu Haifa Machinery Manufacturing Co., Ltd.

Application of VS5/VS6 Barrel Casing Pumps in Low-Temperature LNG Conditions

Recently, our company officially launched the VS5/VS6 barrel casing pump series, specially optimized for low-temperature LNG conditions. This product has undergone multiple rounds of rigorous testing and has been operating stably in actual projects, marking a significant step forward for us in the field of liquefied natural gas transportation.

In LNG receiving terminals and peak-shaving storage stations, the transportation of low-temperature media has long faced two major challenges: first, the pump body is prone to material embrittlement or seal failure under ultra-low temperature environments, leading to leakage risks; second, traditional centrifugal pumps exhibit unstable performance under low NPSH (Net Positive Suction Head) conditions, affecting overall efficiency. While some similar solutions can barely cope, they often trouble users with high maintenance costs or short operational cycles.

The launch of the VS5/VS6 barrel casing pump is precisely aimed at addressing these pain points. In terms of design, we have adopted a double-layer barrel casing structure that effectively isolates the pump body from the external environment, reducing cold loss while significantly lowering the risk of external icing. The core flow components are made of low-temperature-resistant stainless steel, paired with a specialized low-temperature sealing system, ensuring long-term stable operation of the pump within a temperature range of -196°C to -40°C. Additionally, the pump unit integrates high-efficiency inducer technology, greatly enhancing cavitation resistance and maintaining stable output even under low liquid level conditions. Users only need to follow standard installation procedures and pair it with variable frequency control to achieve a smooth transition from startup to full load, without the need for frequent manual intervention.

In practical use, a coastal LNG receiving terminal applied the VS5/VS6 barrel casing pump in its BOG (Boil-Off Gas) recovery system, replacing the original equipment. Operational data shows that the pump unit's efficiency has increased by approximately 8%, and the maintenance cycle has been extended to over 12 months, effectively reducing the total lifecycle cost. Operators have reported significantly reduced vibration and noise, making routine inspections more convenient.

We are honored to provide this reliable power solution for the LNG industry. Moving forward, our team will continue to track user feedback and further optimize the product's adaptability in extremely cold regions. If you have similar needs, please feel free to contact our customer success team for detailed technical materials and selection support.

Jiangsu Haifa Machinery Manufacturing Co.,. was restructured from Jiangsu Ligong Group Co., Ltd., originally established in 1958, and the Jingjiang Stainless Steel Pump and Valve Factory of the Central Iron and Steel Research Institute under the Ministry of Metallurgical Industry. The company primarily produces API610 chemical process pumps—OH1 pumps, OH2 pumps, OH3 pumps, OH4 pumps, BB1~BB5 multi-stage pumps, VS1~VS6 barrel casing pumps, HES-type chemical process pumps, sixth-generation ultra-low carbon stainless steel high-quality leak-proof molten urea pumps, urea hydrolyzer feed pumps, pitot tube pumps, rotary jet pumps, molten salt pumps, vertical sump pumps, high-temperature magnetic drive pumps, magnetic pumps for conveying solid-containing media, industrial pumps, canned motor pumps, slurry pumps, titanium tetrachloride pumps, strong self-priming pumps, fluorine-lined pumps, leak-proof pumps, alkali pumps, axial flow pumps, long-shaft vertical sump pumps, CQC first-level energy efficiency chemical pumps, and high-pressure descaling industrial pumps.  
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