natural gas/ flex pipe

[Jerome W. Young]

Is this type gas line ok for natural gas? I see it all the time with LP.

[Dom D'Agostino]

It looks like a stainless steel flexible appliance connector.
Good for NG or LP.

[Jon Randolph]

The material, if stainless, is approved for use. I have heard of, but not seen, corrugated aluminum which would not be good.

It is a little long in my opinion and the bend in the wall box is too sharp. Also, some municipalities do not allow galvanized on natural gas lines.

What is the 4" step to the right?

[Bob Harper]

Flexible appliance connectors are listed for NG and LP. I agree Jon, that offset inside the shutoff box is a strain on that fitting. One good tug and you'll have a leak. Galv. with gas is an overrated problem. It is allowed now by both gas codes.

Unless a dryer or range, max. length is 36" per code. Those can have up to 6'.

HTH,
Bob