Selection of electric control valves
Thread Content
As we all know, electric control valves come in two versions with power supplies of 380V and 220V. I would like to ask how to decide whether to use 380V or 220V for power supply, and what are the differences between the two? Please advise.
I think 380V is good. Since three-phase motors have a lower starting current than single-phase motors, this is highly beneficial for extending the service life of control valves. Industrial chassis use three-phase power; if AC220V is required, a transformer is needed. Poster: I’m not sure if this answer satisfies you. QQ: 928976489
As for the power supply choice for electric control valves, I believe it should be determined based on the actual operating conditions and the type of valve. In a factory setting, 380V and 220V are both necessary power supplies. For example, in the case of small control valves, the actuators usually require a 220V power supply. However, for steam gate valves used in thermal systems, where there is a high pressure difference and large diameters, actuators with a 380V power supply are typically used
Select the electric valve to be used based on the actual operating conditions
Most electric valves are powered by 380 volts. It seems there’s no 220, right? However, the main consideration is whether it can drive the valve.
Selection should be made with reference to the manufacturer’s product specifications.
It mainly depends on the operating conditions; if a higher output torque is required, it’s best to use a 380V version, while if a lower torque is sufficient, a 220V version will suffice
Electric control valves are available in 220V versions, and Wenzhou Haimite is one of the manufacturers that produces them
In chemical production, electric control valves for handling materials are usually powered by 220V. Those that need to be installed on large-diameter pipes, such as at the inlet and outlet of fans or in converters, are generally powered by 380V, and this is mainly related to the output torque. As for power supply, it is relatively easy to obtain either 380V or 220V power in factories.
Yes, the selection of 380VAC/220VAC and equipment power is primarily based on the maximum torque required at the highest pressure difference before and after the valve (with a coefficient also applied). The 220V control valve can also be switched on and off by reversing its direction of rotation