Electromagnetic flow meters are widely used in various industries, such as petroleum, chemical, and sewage treatment. For electromagnetic flow meters, the selection of internal lining materials is very important. So, what are the lining materials for electromagnetic flow meters, and how should these different materials be selected?
1. Polytetrafluoroethylene, also known as F4
One of the commonly used lining materials is due to its highly stable chemical properties, which can withstand boiling hydrochloric acid, sulfuric acid, as well as concentrated alkali and various organic solvents. So it is generally used on highly corrosive media such as concentrated acid and alkali, or sanitary media.
2. Perfluoroethylene propylene, also known as F46.
This material is similar to F4, but has stronger wear resistance than F4 material, and the same medium temperature can reach 100 ℃.
3. Screen PEA
The chemical properties are similar to F4, with good anti negative pressure ability. The integrated type can withstand 70 ℃, while the split type can achieve 80 ℃. It is generally used in water, sewage, and weakly abrasive slurry.
4. Polychloroprene rubber
This material has elasticity, high tensile strength, good wear resistance, and can withstand corrosion from low concentrations of acid, alkali, salt, and other media, but is not resistant to corrosion from oxidizing media
5. Polyurethane rubber
This material can only be used in non corrosive media because its corrosion resistance is poor, but its wear resistance is strong, and it can be used in neutral and strongly worn slurry and mud.