1. Valve body thickness:
Compared with the electric flange butterfly valve, the electric butterfly valve is slightly thinner. The two ends of the valve body cannot be connected by flanges. There are only a few guide bolt holes. The valve is connected to the pipe end flange by a set of bolts/nuts, which is usually suitable for narrow pipe diameters or restricted places at the end of the pipe. The advantage is that it is easy to disassemble, the valve cost is low, and the space is small, but the disadvantage is that there is a problem with one sealing surface, and the two sealing surfaces must be separated.
2. The valve body is different:
Electric flanged butterfly valves have flanges on both ends of the valve body. When connected with pipeline flanges, the sealing performance is more reliable than electric butterfly valves. They are usually used in occasions with larger diameters or higher pressures, but their cost is higher than that of electric Butterfly valve.
3. Different designs:
Electric flange butterfly valve bolts are usually longer. At high temperatures, the expansion of the bolts may cause leakage, so it is not suitable for large diameter pipes under high temperature conditions. For example, the wafer butterfly valve cannot be used at the end of the pipeline and needs to be disassembled downstream, because when disassembling the downstream flange, the electric flanged butterfly valve will fall. In order to disassemble, a short part must be made. The electric flange butterfly valve does not have the above problems, but the cost is higher.
