The issue of preventing settlement in storage tank piping
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When designing tank piping, settlement requirements lead to the use of hoses or expansion joints. What are the reasons why it is suggested that pipes with a diameter of DN300 or larger should use expansion joints rather than hoses?
Both expansion joints and hoses should work
The reason for using DN350 as the dividing point, with metal hoses used below and bellows expansion joints used above, is that metal hoses are not reliable in themselves. When used on large-diameter pipes, it increases the risk of leakage of hazardous materials. It is mainly the quality of the product that affects safety issues; for example, with water pipes, no such concerns are necessary
This issue once again demonstrates the importance of root valves
For connections on storage tanks with a DN300 diameter or larger, should you choose hoses or expansion joints to prevent settlement? https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1963710 (Source: Haichuan Chemical Industry Forum Website)
The hose itself is a weak point; if its diameter is large, the weight of the liquid inside it becomes significant, and over time this can damage the hose. The compensator is also made of hose, with additional components added to the outside to enhance its strength!