Pictures of valve corrosion
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Solving valve corrosion. As shown in the figure, the stainless steel part of the valve is in good condition. Corrosion has occurred on the valve body. What could be the possibility for this reason? I hope some expert can help analyze it.
Is it a bit like erosion or cavitation corrosion?
Styrene and water, with water being the majority.
Slightly acidic, with a test strip reading of between 4 and 5. Could it be acid corrosion? I personally don’t think so.
The pH value of water and styrene should be around 7; why does it appear acidic? There might be cavitation in that area
The corrosion resistance of valves should be greater than that of pipes!
These two are the main ones; there are other things as well, but in small amounts and their components are not known. The actual test result indeed shows it to be acidic.
These two are the main ones; there are other things as well, but in small amounts and their components are not known. The actual test result indeed shows it to be acidic.
It seems that carbon steel is not suitable; it is recommended that the material of the valve body be the same as that of the valve core, namely stainless steel
The reason is still unclear. Nor can I persuade the management to change the material. Right? We still need to find out the reason first.