Hello I will help you with your question,
If this is the valve you have located you remove the hose and unscrew the valve.
The valve is in the corner of the front valve cover.
Let me know if you have further questions about this
This is the constant orifice type of valve and it does not need to be replaced. There is nothing inside but a hole that you can spray with brake cleaner to clear. There are no moving parts here.
I only see one picture so the other may not have loaded or it may be too large for the system
Do you have a picture with an overall view?