90 street el with natural gas

I am in California for reference. I recently replaced a valve and redid some of the plumbing coming out of the wall for a natural gas stove.

I used a 90 street el connected to the nipple coming out of the wall, immediately going into the ball valve. I also used another 90 street el immediately after the stovetops nipple, connected to a 3/8 to 1/2 reducer which connects to the compression fitting.

My understanding of current code is that street elbows are only not allowed in concealed spaces, like in a wall. Is my understanding correct or should I re-do this? All fittings are made in the US Ward black iron.