re: How much should it cost to add a short 1/2" natural gas line ?

quote:

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bet you spend less the $100 on the galvanized pipe and fittings and its just an hours work to do it

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Pretty sure you need black iron for gas line, not galvanized. Probably 30 bucks worth of parts. There's a lockout valve to turn off the gas at the bottom of the meter. Some pipe dope and pipe wrenches to add the fittings you need. I'd probably do 3/4" as much as possible.