I need some help identifying some plumbing. I have a 1973 International Sovereign
31' Side bath. The plumbing enters on the road side in the corner. I have attached pics of it. I need to ID the plumbing because I want to delete the original regulator as it is leaking and I use a pressure regulator at the water source. I do not use the fresh water tank and as I live in South Louisiana, the system flush/drain for winterizing is really not something we use. I want to delete the old regulator and replace it with a piece of tubing. Can someone give me an idea of what pipe is what? I know which one is the water inlet from outside, but I need to know what to connect to what after I remove the regulator. While I am doing it, I would like to remove the red valve inside (I assume its for the system flush). Hope someone can help. Thanks.