how to select the inner lining of electromagnetic flowmeter? I hope it is more detailed! Thank you!
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selection of lining of electromagnetic flowmeter
electromagnetic flowmeter, like fluorine-lined ball valve, has lining material, and different lining materials have different characteristics and are suitable for different media. The lining material should be selected according to the corrosiveness and abrasiveness of the measured medium and the service temperature of the medium.
The lining materials of electromagnetic flowmeter mainly include neoprene, F-4, F4 and F46 fluoroplastics, polyurethane rubber and ceramic materials. The specific differences are as follows:
Neoprene rubber is characterized by weak corrosion resistance and low price;
F-4 lining is characterized by good corrosion resistance, but poor wear resistance and poor adhesion, so it cannot be used for negative pressure.
F4 and F46 fluoroplastics are characterized by good corrosion resistance and adhesion, and can be used for negative pressure;
Polyurethane rubber is characterized by good wear resistance, but poor corrosion resistance;
ceramic materials are characterized by good wear resistance and corrosion resistance, but ceramics are brittle and fragile, and special attention should be paid to prevent the drastic change of temperature when using them;
Some special media are corrosive:
F-4 has good corrosion resistance, but it cannot be used for chlorine trifluoride, liquid oxygen and ozone at high temperature of chlorine trifluoride; F4 and F46 can't be used for the above media, and they can't be used for fuming butyl lithium nitrate and other media.