For corrosive media, how should the diaphragm material be chosen?
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For corrosive media, should the diaphragm be made of a corrosion-resistant metal suitable for that medium, or should it be lined with fluorine?
Consider all factors including the temperature and pressure of the medium as well as the investment costs
The selection of diaphragm material requires corrosion resistance and temperature resistance, as well as consideration of investment costs
Fluorine lining is not recommended in the presence of negative pressure
Since it is a corrosive medium, one should directly tell everyone what this corrosive medium is. Corrosion is a phenomenon; it can be said that any medium may, under certain conditions, act as a corrosive agent for a particular material, even ordinary water. You can’t possibly not know what your process medium is, right? Because whenever a manufacturer chooses a transmitter diaphragm for mass transfer, it must take into account the specific characteristics of the medium in question. In other words, there is no such thing as a \"corrosive medium\" without a specific name; rather, it must have an exact designation along with information regarding its operating conditions within the process.
It depends on the operating conditions; our company has supplied PTFE diaphragms to some pump manufacturers
By using an appropriate diaphragm for the instrument, it is usually possible to handle the vast majority of corrosion cases； Fluorine lining can solve the vast majority of corrosion problems, but it also brings a series of other issues. It’s often more troublesome than corrosion itself. .
Now, PTFE can be sprayed on metal diaphragms, which can be used in negative pressure conditions
Will not peel off under high-temperature spraying of 400-500 degrees