Heating Contractors

I am a licensed electrician and have installed rigid pipe explosion-proof devices in the past, but now I have to install a gas line for a new stove that I bought. Is natural gas and I know that the closure is in the metro, but how I can purge the gas remaining in the line and is there anything else I should know besides using black tube and thread compound? I'm tapping out a fixture in existing T that feeds my oven about 10 meters away. I like the idea of using flex pipe instead of black. Well, I have the answer here. I'm not a contractor, but I installed various gas appliances. If I'm going to replace a stove, I'll light a burner and close the gas while someone (usually my wife) looks. The amount of gas remaining in the line will be very little if the shutdown is in good working order. The second thing is the black iron cake is only used when going through a wall. We just replace our hot water heater and PVC insulated flex pipe was used. We bought a shop in a plumbing supply. You may have the wrong name, but it came on a roll and attached links us with a compression fitting. Still I used putty on the threads even though I was told that was not necessary.

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