I need to run a 1/2″ gass line to a new heater. It needs to go under a finished hardwood floor- no other way to run it. Obviously, I don’t want to open the floor. It’s about a 7′ run under the floor, parallel to the 2×10 joists; outside wall at one end, closet at the other. I can go in the closet (carpeted floor), open the floor there about 4′ long. Would it be OK to drop in a 4′ length of pipe, shove it down the joist space (resting it in the crook of the X bracing), then join another 4′ length and shove that in? I’d pressure test the whole run before connecting the gas. I can secure the pipe easily at each end, and, as I said, there’s an X brace just about in the middle of the run- the connector would be very close to it.
Thanks!!
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I'm guessing here, but I think it would very much depend on the inspector....to my mind, if it passes pressure test it's OK, and I'm sure there are plenty of runs out there with lots of joints in them by neccessity, so I don't think there is a blanket restriction on how many fitting are allowed, but you would need to check code on that.
Seems to me that this would be a good place to use the flexible stainless steel gas pipe. I've run some thru basement ceilings. It is a bit like fishing electrical wiring with a bigger diameter.