That is a very simple question, with a very simple answer. Materials
and parts APPROVED for use in residential natural gas installations in
Black iron pipe and fittings are legal pretty well
anywhere.Galvanized is approved in some areas for certain use. Soft
copper tubing is approved for some use in some locations, under
certain conditions. Same for stainless steel flexible courigated
tubing. Cast iron and Brass valves and fittings with the proper
approval ratings can be used. If it is not rated for gas, you cannot
Check with your local building department and gas company.
On Wednesday, November 6, 2013 12:44:01 PM UTC-5, pete wrote:
Black iron will always work. Outside the US soft copper is approved some places and it's way easier to work with.
In the US you can also use the covered flexible stainless steel but it does require special fittings on the ends and your inspector may want it done by a licensed contractor. If you do it yourself soap test all the joints.
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