Hot Water Tank replacement question share 154 days ago by The man hello everyone. I'm getting ready to replace my hot water tank and noticed something that I thought was "weird". I currently have 3/4' non-cooper, assumed to be galvanized pipe, as my cold water source and hot water feeds. As you know, the hot water tank has 3/4" for the inlet and outlet too. But fo ... Plumbing 101 - plumbing101.net · 2 references |