Gas line help - need to feed a new range

[jcrevz]

Switching from electric to gas range. Gas water heater directly on the other side of wall in garage, 3/8" copper tubing (actually probably 1/2" now that I think about it) supply that runs through the crawlspace from the meter on the other side of the house underneath the kitchen. Copper is flared to black pipe for regulator and valve for water heater. Old gas log fireplace on meter side of house tee'd off same line close to the meter, but capped now (wood burning). Not sure of Btu's for the water heater or the range but I could get that later if needed. Can I sweat in a tee on this same tubing, to feed the range? Would this be done under the crawl and stubbed through the floor or in the garage and stubbed through the wall? Extend/tee off the black pipe? What is the typical install for this?

 

[Reach4]

Can I sweat in a tee on this same tubing, to feed the range?

No. Flare fittings OK, but not regular solder. Brazing may be permuted in some cases.

 

[Sponsor]

 

[Jadnashua]

Knowing the BTU requirements is important as is the overall length of the line and the supply pressure involved. If there are lots of fittings, those can limit the maximum flow, too. You need to add up the BTU requirements for all devices and also verify that the gas meter is capable of supplying the needed volume (it probably is okay, but you still need to check). In some places, soft copper isn't used for NG...it depends on the actual composition of the supplied gas. Some supplies can cause scaling on the inside of the pipe, causing issues down the road. IF you've been okay with copper, your supplier probably isn't a factor, but you may want to verify with the local inspector and utility that copper is still approved.

A 1/2" soft copper line may not be adequate for the WH and range, depending on how much each uses, especially if it is a long run unless you're running higher pressure which you may not have control over.