Impeller problems in fluoroplastic pumps
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Our company purchased a batch of fluoroplastic pumps, and after using them for some time, the impellers of several of these pumps suffered the following damage (as shown in the diagram). The media transported are tetrachloropropene and pentachloropropane, with an operating temperature of around 110 degrees Celsius. There are no particulate impurities in the liquid; could you please tell me what the cause is. Is it caused by cavitation? I can provide additional information if needed. Thank you so much!
When the temperature is high, there’s no problem transporting materials at room temperature
110 degrees – ordinary fluoroplastic materials can’t withstand that. Was no discussion about the temperature involved during the selection and supply process?
110 degrees isn’t that high; in the past, higher temperatures would cause deformation, but such complete detachment has hardly ever been seen.
Oh, for these 100 degrees, I use PFA for the customers. .
Which specific fluoroplastic is it? Different fluoroplastics have different temperature tolerances
It is because of the high temperature, which causes fluoroplastic to soften and increases erosion wear.
FEP’s 46 is not 26
The temperature is high. If PFA is to be used, I guess your pump cover is also damaged. The first one is too badly damaged. Is it a quality issue? At high temperatures, it might deform at most, but how could it fall off?