According to the connection mode of electric butterfly valve, the difference between electric flange butterfly valve and electric wafer butterfly valve is introduced in detail. If you think the answer is helpful to you, please give a compliment to the American Witton VTON valve.
Imported electric butterfly valves can be divided into imported electric double butterfly valves and imported electric flange butterfly valves according to the connection mode. So what are their differences and how to choose? Let's analyze the butterfly valve of American Weidun VTON, which is familiar to everyone.
As one of the commonly used valves in pipelines at present, electric butterfly valve is used to realize the on-off and flow control of various media in pipeline system, and has been widely used in petroleum, chemical industry, metallurgy, hydropower and many other fields. Electric butterfly valve and electric flange butterfly valve have their own characteristics and different performances, which can be used in different industries.
Apart from the difference in structure, the biggest difference between these two valves is the different connection mode, that is, the different installation mode, which depends on the field working conditions!
A, the difference between electric butterfly valve and electric flange butterfly valve:
The thickness of electric butterfly valve is thinner than that of flange butterfly valve. There are no flanges at both ends of the valve body, only a few guide bolt holes. The valve is connected with the flange at the pipe end through a set of bolts/nuts, which is generally suitable for places with narrow space or limited pipelines. For example, in some occasions where the space is small and the cost is relatively low, many imported electric butterfly valves from Witton VTON in the United States are selected. The advantages are more convenient disassembly, lower valve cost and small occupied space. The disadvantage is that one sealing surface fails and both sealing surfaces need to be disassembled!
Flanges are respectively arranged at both ends of the valve body of the electric flange butterfly valve and connected with the pipeline flange. Compared with wafer butterfly valve, the sealing performance is more reliable, and it is generally used in places with large diameter or high pressure, but the cost is higher than wafer butterfly valve. For some projects with diameter larger than DN200, pressure higher than 2.5Mpa and high sealing requirements, the imported electric flange butterfly valve from VTON, USA is selected.
Second, the choice between the two:
There are still some things to pay attention to in design. For example, clip-on valve bolts are generally long, which may cause leakage at high temperature, so they are not suitable for large diameter at high temperature. For example, the wafer butterfly valve cannot be used in situations where the end and downstream of the pipeline need to be dismantled, because the wafer butterfly valve will fall off when the downstream flange is dismantled. In this case, it is necessary to make extra short joints for disassembly, while the flange butterfly valve does not have the above problems, but the cost will be higher.
In short, the imported electric flange butterfly valve is suitable for all kinds of working conditions, but the price cost is higher than that of the imported electric clamp butterfly valve; The cost of imported electric butterfly valve is low, but it is generally suitable for occasions with relatively small caliber under normal temperature and pressure.