Problems with the remote control signal valve

Is it a valve issue or a control issue?

First: lol:lol, no ranting. Electric valve = motor + valve body; electrical power provides the drive force, and the control room sends control signals = remote control. Pneumatic valve = Pneumatic actuator (including the valve body) + positioner/solenoid valve; instrument air serves as the power source, and the control room sends control signals to the positioner/solenoid valve, which means remote control. Remote control is a \"standard term\" – when people talk about pneumatic valves, they understand that the control room needs to send signals to the valves, i.e., remote control ； Some people ask regarding electric valves: Is there a remote control signal available in the control room? In the 60s and 70s, the level of automation was relatively low; pneumatic controllers were located on-site, and people had to go there to adjust the set values or perform manual operations. The operators were very busy, acting like sentries on duty. There were also pneumatic valves in the control room, and pneumatic signals were sent from there to the valves – this too is considered remote control. This is history; please don’t criticize the original poster. ;P

I don’t seem to understand very well; it’s too complicated. Could you explain it again, please?

The electrical signals sent from the control room are theoretically referred to as “remote control signals,” and the devices that can be controlled include pneumatic control valves, solenoid valves, electric valves, and electric motors. There is also a \"narrowly defined\" remote control valve (which is likely what you mean); we call it a \"manual remote control valve.\" It does not have a control circuit, and the opening degree is set manually in the control room. For example, pneumatic control valves used for manual venting are generally designated as HV – which is probably what you refer to as a \"remote control signal valve.\"