How to distinguish the quality of clamp type fluorine lined butterfly valves

In recent decades, clamp-on Fluorine-lined Butterfly Valve Due to its advantages of relatively small size, light weight, compact structure, convenient and fast switching, easy installation, and corrosion resistance, it is widely used in industrial pipeline systems with a nominal diameter of over 50mm. But some problems have also been found in practical engineering applications, and the following are just a few Clamp type fluorine lined butterfly valve Several opinions on selection and installation.
At present, many manufacturers have introduced tetrafluoroethylene as a sealing material for the valve seat of clamp type fluorine lined butterfly valves. This material is wear-resistant and high-temperature resistant, but its disadvantage is that when the sealing ring is cold, it will shrink, and when it is hot, it will expand, resulting in problems such as butterfly valve leakage, loose closure, and difficult opening and closing. However, most domestic manufacturers have already solved this problem, but there are still some manufacturers who have not been able to truly solve it. Therefore, when choosing a clamp type fluorine lined butterfly valve, attention should be paid to whether its corresponding indicators are qualified.
It should also be noted that many users currently lack the ability to distinguish the fluorine lining material used for clamp type fluorine lined butterfly valves, and lack corresponding testing and analysis methods. In this case, to prevent the use of recycled fluorine lined butterfly valves in the construction market, a preliminary check can be made through visual inspection: if the appearance is rough, dull, or lacks light, it is suspected to be recycled fluorine plastic. When necessary, strict testing should be carried out.

Basic types of clamp type fluorine lined butterfly valves

Fluorine lined flange butterfly valve D341F46-16C