Definitions and differences between the two sets of names: control valves-regulating valves, and on-off valves-shut-off valves
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Regarding the definitions and differences between the two groups of terms – control valves-regulating valves, and on-off valves-shut-off valves – I have been confused by these terms for a long time. Despite searching through many sources, I haven’t been able to reach a conclusion. Could everyone please explain what the relationship between them actually is?
Simply put, there isn’t much difference between them; in China they are more often referred to as regulating valves, while abroad they are more commonly called control valves. But on a broader scale, control valves encompass all valves that have control functions, and regulating valves are also a type of control valve； Switch valves are generally of electric or pneumatic type; they serve the purpose of switching on and off. Cut-off valves, on the other hand, are control valves that enable rapid shutdown, and they can be of electromagnetic or pneumatic type! Last edited by zlky2005 on 2009-3-24 at 10:47.]
The English term for both control valves and regulating valves is “control valve”. In old textbooks and among the older generation of Chinese people, it was called a regulating valve, while the newer generation, including those with some foreign background, refer to it as a control valve.
I think a control valve is just a regulating valve, and a shut-off valve is a on/off valve.
Control valve = CONTROL VALVE = regulating valve. In English-language materials, “control valve” is usually translated as “regulating valve”. A control valve is simply a regulating valve; it’s just called by a different name conventionally. A cut-off valve is the same as a on/off valve; they mean the same thing.
In my opinion, all valves used in a control system are referred to as control valves, whether they are control valves or on-off valves; the classification is based on their function.