Can someone please advise what this threaded copper fitting on the inlet is connected to, and what I'd expect to find beyond?
I want to replace the dip tube. Every picture, diagram, video out there shows units with a nipple between the heater and cold water plumbing. I want to be prepared with right parts, tools on hand before I go cutting copper pipe.
![1716663726059.png 1716663726059.png](https://cdn2.imagearchive.com/plumbingforums/data/attachments/43/43250-7e50c74a106a584b4e45b0a482564a81.jpg)
Wide view of water heater plumbing for reference:
![1716663747392.png 1716663747392.png](https://cdn2.imagearchive.com/plumbingforums/data/attachments/43/43251-e068f85a57f8dc947487fdb3cc4fe213.jpg)
I want to replace the dip tube. Every picture, diagram, video out there shows units with a nipple between the heater and cold water plumbing. I want to be prepared with right parts, tools on hand before I go cutting copper pipe.
![1716663726059.png 1716663726059.png](https://cdn2.imagearchive.com/plumbingforums/data/attachments/43/43250-7e50c74a106a584b4e45b0a482564a81.jpg)
Wide view of water heater plumbing for reference:
![1716663747392.png 1716663747392.png](https://cdn2.imagearchive.com/plumbingforums/data/attachments/43/43251-e068f85a57f8dc947487fdb3cc4fe213.jpg)