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What's the swivel joints of loading arms and the function for loading arm?

Feb 07, 2025

What's the swivel joints of loading arms and the function for loading arm? 

 

The swivel joints of loading arms play a crucial role in the operation of loading and unloading equipment. They are designed to enable flexible rotation and movement, allowing the loading arms to reach various positions during the process of connecting with tank trucks or ships.

 

These swivel joints are typically constructed with high - quality materials to ensure excellent wear - resistance and corrosion - resistance. For example, the inner ring may be made of stainless steel like 304 to withstand the internal medium and friction, while the outer ring could be composed of alloy steel such as 45# for enhanced mechanical strength.

 

Good sealing performance is another key feature of swivel joints. Advanced sealing structures and materials, like fluororubber seals, are used to prevent leakage of the conveyed media, whether it's liquid or gas. This ensures the safety and environmental protection of the loading and unloading operations.

 

In addition, swivel joints are engineered to bear certain loads and torques, maintaining stable operation under different working conditions. Their smooth rotation reduces the resistance during the movement of loading arms, improving the overall efficiency of the operation.

swivel joint for loading arm

 

The swivel joints of loading arms are key components in fluid loading and unloading arms (loading arms). Their main function is to allow the loading arms to rotate while ensuring the sealed transportation of media without leakage. There are two balancing methods: counterweight balancing and spring balancing. Nitrile butadiene rubber, fluororubber, and polytetrafluoroethylene are used as sealing materials. The standard design specifications include DN50, DN80, DN100, DN125, and DN150. They can also be designed and manufactured according to customers' requirements. The design pressure ranges from PN0.6 to PN6.0MPa, and the design temperature ranges from -196°C to 200°C. Accessories such as automatic vacuum relief valves and manual vacuum relief valves can be selected. There are two driving modes: manual and pneumatic. The sealing surfaces of the swivel joints are overlaid with stainless steel.

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