I just bought a new house - first time homeowner, but long-time DIYer. Never worked with gas, though, so I wanted to get some expert eyes on my plan before I did anything stupid.
We are planning on redoing the kitchen, and we want to replace the electric stove with gas. Fortunately, it looks like the previous homeowners had a gas stove at one point and decided to replace it with electric. Unfortunately, the old gas line - which is valved and capped - doesn't end where we want the new range to go after the remodel.
Range is currently on the left, we want it on the right, immediately next to the door - that's an external wall, which should make a nice range hood easier. Gas line looks like this:
The trunk has a branch for the range between what MIGHT be the right joists, but it might need to go one over (where the HVAC ducting currently is).
My current plan is to:
Leave the T-junction branch, the 3" vertical piece, and the elbow. Disconnect the straight piece from there, and get a longer one to run it out to to the far wall where the range will be positioned. The piece is currently 5' or so long, and it'll need to be about 8' longer - so I'd be replacing it with a 13' pipe. Elbow at that end and point a new piece straight up through the floor, then shutoff valve, then use a flexible connection between that and the range.
The alternative is to leave the 5' pipe in place, add a shutoff valve there, then add the 8' pipe afterward. This would mean I don't have to put the valve behind the range, but if I finish the basement (also part of the plans... eventually) then I'd need an access panel there in the ceiling which would look weird.
My understanding is that a long flexible house can't traverse floors (so I can't buy a 10' flexible hose, attach to the current 5' pipe, and go straight up to the range) - for code references, I'm in Ohio.
If I have to go to the next gap over between joists, it'd be similar except I'd elbow sideways at the end of the long run, drill a hole through the joists to accept a small cross pipe, then elbow upward.
Is this a reasonable plan? As I understand from reading I'll want to use rectorseal on every joint, which makes sense. Some places suggested a pressurization test, where I pump it to 25psi or something with a bicycle pump, then leave it for 24 hours to ensure it stays pressurized (and do a soap/bubble test), any other good advice for general practice or for my specific plan to help calm nerves and increase WAF?