As far as I can understand you can do a pressure test when you just installed things How do you do it when you are adding new lines (ex I am adding PEX lines to existing copper lines) How do you test your drain for leaks ? I am adding or rerouting drains to an existing drain pipe in the basement. That will go under the slab. Is there any way to test this considering that the other end of the pipe is open -connected to the soil stack ?
Here is my situation. I will be adding the blue segments 4-new sink 1-old sink, piping still in place 3- new shower drain 2- connectionbetween existing drain and new drain for the new sink 6 -soil stack