I have a gas pipe with a simple turn shut-off valve in line on the pipe feeding the section I need to work on. Is shutting it off there sufficient enough to do the work I need to do, or do I need to shut it off at the main?
Scenario; We recently found the foundation had bowed in just a little which put pressure on where this piece of pipe angles to feed a fireplace and the laundry room for a gas dryer. I had dead man anchors etc installed to take care of the foundation issue. Now I need to replace two pipes to take off any pressure from the pipeline.
See in the image, the foundation is pressed up against and even bending the pipe;
So I need to replace both pipes feeding this corner. Conveniently after breaking down more ceiling (amazing what you find when you remodel) I found this in-line valve I turned off that feeds this section.
Can I get away with just having that in-line valve shut-off to do what I need to do? I've never done it without the main shut-off but there's like 4 neighbors gas registers in my yard and I don't know which is mine, but I still wanted to be safe and get some opinions first. Advice welcome