Difference between control valves and regulating valves

A control valve is a regulating valve that serves to regulate and control

Yes! Upstairs is correct! For example, when you work with 3D PDMS piping, this term appears for control valves!

To control something, it is necessary to make adjustments, and the purpose of these adjustments is to achieve control (of flow rate, liquid level, etc.). That is why the two can be equated.

Upstairs is correct! I’ve learned it, hehe

It’s too simple. Could you explain it in more detail?

Control valves include on-off valves and control valves!

There is a difference between control valves and regulating valves, but in China there is little clear distinction between them; they are often referred to collectively as control and regulating valves. The definition of a control valve should be: In process control industry, the most commonly used terminal control element is the control valve. Control valves regulate the flow of fluids such as gases, steam, water, or chemical mixtures in order to compensate for load disturbances and keep the controlled process variable as close as possible to the desired setpoint. A control valve is essentially a throttle valve; its purpose is to create a pressure drop and reduce flow rate, which is why it can have a valve seat with a diameter significantly smaller than that of the valve’s passage. It can be said that all control valves are regulating valves, but not all control valves are regulating valves.

It is called a control valve abroad, while it was referred to as a regulating valve in China in the past; recent national standards have also used the term control valve, indicating that the two refer to the same thing.

I asked this question to an instrumentation engineer at Chevron, an American of German descent; he said there is no difference between a regulating valve and a control valve

I’ve learned something new – control valves and regulating valves are the same thing.