Hello, I was hoping for some help identifying some water lines that are connected in with the cold line going into my water heater. There are 3 lines that I've been unable to identify. I've tried turning off the 1/4 turn valve in the upper right of the photo and my external spigots and all internal fixtures continue to work. If I shut off the yellow ball valve the water turns off to the cold side to my water heater which is expected.
What are the 3 lines in the upper half of the photo? Any help would be appreciated! Thanks
What are the 3 lines in the upper half of the photo? Any help would be appreciated! Thanks