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Can nylon pipes be used for control valves in the Yulin area of Shaanxi? The main concern is that the material might become brittle and crack due to low temperatures. Could those in the northern regions let me know if it can be used? Nylon pipes used indoors in the Jiangsu and Zhejiang areas have definitely worked fine for 5 years
Stainless steel pipes or copper pipes can be used.
Secure it with a stainless steel tube! After all, the stability is much more reliable!
It’s better to avoid using it; in case there’s an extremely low temperature during that particular year, compared to historical averages
Now, the small air supply pipes for control valves are all made of stainless steel. Nylon tubing was widely used before the 1990s; at that time, the economy was underdeveloped and productivity low, and both stainless steel and copper were hard to obtain, so nylon tubing was commonly used. Disadvantages of nylon pipes: They age rapidly under ultraviolet exposure, and the presence of volatile hydrocarbons in petrochemical environments also has a significant impact on their aging. The joint part of the nylon tube itself is prone to coming loose. Copper pipes are prone to rusting, and copper is more expensive than 304 stainless steel. It is recommended to use 304 stainless steel instead.
This type of nylon tube won’t last long outdoors in the south either. We used to use it on fire dampers.