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Analysis of the use of desalinated medium for rubber-lined butterfly valves and fluorine-lined diaphragm valves

Release Date: May 02, 2018

1. Why is selection more important than calculation?

Compared with calculation and selection, selection is much more important and more complicated. Because the calculation is only a simple formula, it is not in the accuracy of the formula itself, but in the accuracy of the given process parameters . The selection involves a lot of content. A little carelessness will lead to improper selection, which will not only cause waste of manpower, material and financial resources, but also result in unsatisfactory use. Quality, etc.

Second, why the desalinated medium uses rubber-lined butterfly valves and fluorine-lined diaphragm valves with short service life?

The desalinated water medium contains low concentrations of acids or bases, which are relatively corrosive to rubber. Corrosion of rubber manifests as swelling, aging, and low strength. The use of rubber-lined butterfly valves and diaphragm valves is poor. The essence is that rubber is not resistant to corrosion. The rear rubber-lined diaphragm valve is improved to a fluorine-lined diaphragm valve with good corrosion resistance, but the diaphragm of the fluorine-lined diaphragm valve cannot be folded up and down, causing mechanical damage and shortening the valve's life. The best way now is to use a special ball valve for water treatment, which can be used for 5 to 8 years.