The untreated portion of gas piping must extend a minimum of how many inches through a wall?

The minimum requirement for the untreated portion of gas piping to extend through a wall is indeed 1 inch. This guideline is established to ensure a proper seal and safety when gas lines penetrate barriers. The small distance helps to provide adequate support and reduces the likelihood of gas leaks occurring at the penetration point, thus maintaining the integrity of the gas supply. Ensuring that at least 1 inch of untreated pipe extends beyond the wall is a standard precaution in both residential and commercial constructions to adhere to safety protocols and building codes. This practice aids in monitoring for any potential leaks and allows for appropriate maintenance or replacement if necessary.