Replace the cut-off valve with a manual valve
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I have a question: in the yellow cloud diagram of the PID below, how can I change the shut-off valve to a manual valve?
This set of pneumatic valves needs to be converted to manual operation. The first question is whether this manual control is to disable the pneumatic actuator, or to manually control the automatic actuator. For the former, most of these valves are equipped with handwheels for control, while the latter have manual knobs on their solenoid valves. For reference.
I just started working in this field. My mentor only said to change this cut-off valve to a manual valve, but didn’t say anything else; I don’t know how to make that change either
It’s simple enough – just have the maintenance staff replace it with a manual valve for you, right?
On the drawings, remove the corresponding components of the valves (solenoid valves, return switches); simply include a legend indicating a manual valve on the pipes. If it is installed on site, replace it with a manual valve. It is not recommended to disassemble the valves in order to replace their actuators – manual valves are inexpensive, so just purchase one. I don’t know what you do – are you in design or maintenance?
It’s about making changes – are they changes to the equipment, or changes to the operation mode? Also, during your apprenticeship, it’s essential to ask questions when you don’t understand something! You follow the instructions he teaches you; if an error occurs, he is responsible. Here we are only discussing the principles behind things. If one ignores the master and tries to find answers on their own by following the methods provided here, then who can be held responsible for that? :lol It’s essential to ask the master when something is not understood!
Actually, what the original poster is referring to is modifying the diagram; there should be a legend, and one just needs to find an appropriate replacement for the valve in question. Remember, the tag number also needs to be changed.
Yes, I only said it was about modifying the image; now I know how to do it
. . . . The questioner is asking how to edit images, right? There are answers for everything, right? Changing the image is simple: just remove all the cluttered elements, keep only the valve on the pipeline, and delete the FC at the bottom – and that’s it!
The new regulations require the addition of shut-off valves, and manual valves cannot be placed in front of those shut-off valves.