Very little is labeled in my pool set-up so I’m trying to figure it all out (and label as I go). If you can help identify any of the unlabeled parts, I would appreciate the help. Hoping that knowing what all of the main parts are will help me determine what each valve controls. There was a link somewhere about an “encyclopedia of pool parts”, but the link was broken. I’m guessing that the part in the second photo has something to do with the auto-fill mechanism. Also, I realize the the two sanitizers are unnecessary so I will not be replacing the bulbs once they burn out. Thank you for your help!