Flex line gas hook-up in Illinois?

[Tom Hone]

Is it acceptable to use a flex line gas hook-up to water heater? I was told the connect must be all pipe.

 

[Reach4]

https://terrylove.com/forums/index....-line-to-a-water-heater-ok-in-illinois.40180/ says no.

 

[Sponsor]

 

[Jadnashua]

It very much depends on where you live. In earthquake country, they generally require flexible. Some places require rigid. Some places allow either.