Regarding the selection of nitric acid pumps.
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The nitric acid pump I used earlier was a magnetic pump, which required frequent repairs and was expensive. I’m not sure what type of pump everyone is using and what the advantages of those pumps are; please share your insights! Thank you!
Your choice of nitric acid pump is correct, but the material used inside it might not be appropriate. We have many magnetic pumps made of fluoroplastic alloys available on the market for transporting nitric acid; the material inside such pumps needs to be replaced. When making your selection, you should inform the manufacturer so that they can help you choose the right pump and replace the necessary components. This way, the pump will be free from corrosion and leakage under your operating conditions, and you won’t need to worry about it at all.
2# ahwldcl Fluoride alloy pumps generally use mechanical seals; leakage can lead to material spraying, and nitric acid is quite dangerous.
Choosing a magnetic pump was absolutely the right decision. The key is to pay attention to some details, such as the material.
What I’m referring to is choosing a magnetic pump. I know that centrifugal pumps use mechanical seals. Nitric acid is a strong acid with high corrosivity; magnetic pumps are the best choice for transporting it, although the internal components of such pumps need to be replaced in order to ensure reliable operation
The selection of the nitric acid pump was correct; it’s likely the material used is not suitable. All our nitric acid pumps are made of 304L material. Additionally, it’s necessary to figure out why repairs are required so frequently in order to resolve the issue properly.
Is it domestic? There’s no problem choosing an imported one. The pumps I sell to Yantai Wanhua have been in use for 8 years; they are magnetic pumps with ETFE linings.
There is no problem with using magnetic pumps made of fluoroplastic for transporting nitric acid
Nitric acid also has a certain corrosive effect on stainless steel; I remember that the storage tanks used were made of aluminum alloy. I think fluoroplastic materials would be the best choice for transporting nitric acid.
It is better to use fluoroplastic magnetic pumps; stainless steel pumps are not very suitable!
Since nitric acid does not cause significant corrosion to stainless steel, many users consider using stainless steel pumps when selecting pumps for handling nitric acid. However, practical use has shown that the service life of stainless steel pumps used for transporting nitric acid is not long. Firstly, the mechanical seal of such pumps contains an O-ring made of fluororubber, and over time this O-ring is naturally corroded by nitric acid, leading to leaks. Secondly, nitric acid causes significant corrosion to stainless steel 304. Thirdly, using 316L stainless steel increases the cost of the pump. Therefore, I recommend that fluoroplastic pumps be chosen for handling nitric acid.