Regulating valve issues
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In what situations are control valves with aluminum valve bodies used?
It mainly depends on the medium being transported. When steel valves are not suitable due to their lack of corrosion resistance, aluminum valve bodies are appropriate for use in oxidizing acidic media such as nitric acid and acetic acid
It mainly depends on the requirements of the medium and the manufacturing process, such as corrosion resistance, erosion resistance, strength, etc. Aluminum can be chosen when there are special weight requirements for certain mobile devices.
Aluminum is generally used in media with low-temperature corrosion
What you said is quite close to the situation at our factory. Here, we have control valves for regulating liquid oxygen and liquid nitrogen. I would also like to ask whether it is not possible to use stainless steel for such control valves?
It should mainly depend on the medium and operating conditions
Aluminum is not the preferred material for corrosion-resistant valves; rather, low-temperature valves are more suitable. Aluminum does not exhibit low-temperature brittleness at low temperatures. However, due to its low hardness, aluminum has poor wear and scratch resistance in terms of sealing surfaces, which limits its use in low-temperature valves. It is only used in valves with low pressure and small diameters. Useful in the air separation cryogenic tank