What type of valve is the electric control valve for the boiler feedwater pipeline in terms of structure?

For rough adjustment, a butterfly valve is sufficient; for precise adjustment, a specialized control valve is required

Boiler feed water is usually controlled by a globe valve

This post was last edited by Jingou Valves Shanghai on 2016-11-2 at 15:08. The boiler feed water control valve is an electric control valve, not an electric control ball valve or electric control butterfly valve. Of course, if lower precision is sufficient, ball valves and butterfly valves can also be used. However, among the clients I work with for boiler feed water control valves, everyone chooses electric control valves. These valves have a straight-stroke design, with plug-type valve seats and valve cores; in theory, they are not intended for shut-off purposes but only for regulation. They meet the fourth-level leakage standard per national regulations. If the pressure difference is not high and the diameter is around 50, then an electric single-seat control valve will result in minimal internal leakage, with essentially zero leakage possible. There is usually a shut-off valve either before or after such a valve. You can search online for terms like “electric single-seat control valve” and “electric sleeve control valve”; the manufacturers’ websites provide detailed information on them. These valves differ from electric control ball valves and electric control butterfly valves. Since electric control valves resemble globe valves in appearance, some people think they are electric control globe valves. But control valves have a plug-type structure, while globe valves do not.

Thank you very much. I checked it myself, and the travel distance of the electric control valve for the boiler feed water is vertical; therefore, since a globe valve cannot be used for throttling, the only option I can think of is a plug valve. Thank you very much for your professional answer~

The stop valve can theoretically only be used to shut off and open, that’s what I understand~

The stop valve can theoretically only be used to shut off and open, that’s what I understand~

A gate valve can only be used for shutting off and opening, while a globe valve has the function of regulating flow. For your reference.

Ball valves have good regulating performance, but their precision is not as good as that of control valves. Control valves are generally used for boiler feed water, while ball valves are more commonly used in the steam pipelines of power plants. Due to the high temperatures and pressures involved, along with the fact that high precision is not required, ball valves are preferred in such applications.

It depends on whether you want a rough adjustment or a precise one; if a precise adjustment is needed, a control valve can be used