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The Role of Braided Metal Hoses for Safe LNG-Systems
Fluid Handling Technology for Liquefied Natural Gas
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February 2025
Key Facts at One Glance:
- In order to operate LNG systems safely and efficiently, braided metal hoses are indispensable: They have to withstand extreme conditions in terms of temperatures, pressure, corrosion, salt, vibrations or mechanical loads.
- ASSIWELL® Vacuum LNG hoses from Angst + Pfister set new standards - from standard hoses to customized solutions for high-frequency LNG stations. Engineering technology ensures long-lasting leak-free safety with zero permeation.
Liquefied natural gas bridges the gap between fossil fuels and renewable energies. In cryogenic LNG plants, custom-made braided metal hoses ensure safety and efficiency. Thanks to their advanced technology, service life and durability, ASSIWELL® vacuum LNG hoses from Angst+Pfister are a decisive factor on the road to a more sustainable energy future.
Liquefied natural gas () LNG has established itself worldwide as an energy source that ensures the transition to cleaner fuels. Compared to coal or oil, LNG emits significantly less carbon dioxide, nitrogen oxides, sulphur oxides and particulate matter. As a transitional fuel, LNG therefore contributes to the decarbonization of energy systems.
Liquefied natural gas consists mainly of methane. By cooling it down to around minus 162 degrees Celsius (minus 260 degrees Fahrenheit), the volume is reduced by a factor of six hundred. This enables efficient storage and transportation over long distances - especially in regions where there are no pipelines. LNG is extremely versatile: in the transportation sector, for example in shipping or heavy goods traffic, liquefied natural gas helps to meet increasingly strict environmental regulations.
Safe and Reliable LNG-Plants
Braided metal hoses are indispensable for operating cryogenic LNG systems safely and efficiently. LNG infrastructures require components that can withstand extreme conditions. These include cryogenic temperatures and high pressure. The metal hoses are typically made of corrosion-resistant alloys such as stainless steel. This means they are specially designed for demanding applications. They remain flexible and durable even at temperatures of minus 162 degrees Celsius. They can compensate for thermal expansions, contractions or mechanical movements without becoming brittle or failing completely. The braided design gives the hoses the necessary strength to withstand considerable pressure fluctuations with ease. This is crucial for LNG pipelines, cryogenic systems or other critical applications.
Metal hoses are extremely durable and function reliably even in harsh operating environments. LNG plants are often surrounded by humid, salty and corrosive conditions. The custom-made metal hoses also absorb vibrations and mechanical loads caused by high flow rates or dynamic movements of the systems. This prevents damage or leaks in the rigid piping components. The hoses are designed to maintain their tightness. Due to the flammability of natural gas and the risks associated with cryogenic temperatures, this property is crucial.
Thanks to their performance, metal hoses are indispensable for critical LNG systems - also with regard to vaporization gas, regasification processes and emergency relief systems. The hoses comply with strict safety standards such as ISO 10380. This underlines their reliability for challenging LNG applications.
ASSIWELL® Vacuum LNG Hoses Set New Standards
Due to advanced engineering technology and individual solutions, ASSIWELL® vacuum LNG hoses from Angst+ Pfister are setting new standards in LNG refueling. With their hydroformed structure, the hoses have a uniform wall thickness, reduced residual stresses and increased durability. They are also certified in accordance with strict safety standards, including PED certification. ASSIWELL® vacuum LNG hoses offer zero permeation and leak-free connections for unsurpassed safety. They optimize refuelling efficiency in a wide range of conditions - as a result of full vacuum capability, excellent chemical resistance and no icing. The properties of metal hoses vary depending on the manufacturing process, shaft design, thermal tolerance, flexibility and assembly technology.
Like sensors, pumps or couplings, they fulfill specific requirements due to their technical design. A team of experts from Angst+Pfister developed ASSIWELL® technologies for various LNG stations during extensive field tests and fault analyses:
- Standard hoses for low-frequency stations
- Improved hoses for medium frequency stations
- Custom tailored long-life hoses for high-frequency stations
ASSIWELL® vacuum LNG hoses have a tested service life that is three times longer than standard products. This minimizes their replacement and reduces operational interruptions.
With over 100 years of industry experience, Angst+Pfister offers flexible contract models and fast delivery times for fluid technology in LNG systems.
Conclusion
Braided metal hoses play an important role in ensuring the safety, efficiency and longevity of cryogenic LNG plants. Their ability to withstand extreme temperatures, high pressures and harsh environmental conditions makes them indispensable for LNG infrastructure. Angst+Pfister's ASSIWELL® vacuum LNG hoses set new standards in the industry with their innovative design, durability and zero permeation technology, contributing to safer and more efficient LNG handling.
As the world transitions to clean energy solutions, reliable and high-performance components such as ASSIWELL® vacuum LNG hoses are essential to optimising LNG operations. With more than a century of experience, Angst+Pfister is driving innovation and providing customised solutions that improve the safety and sustainability of LNG facilities worldwide.
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