What is a common requirement concerning corrugated stainless-steel tubing (CSST) in some jurisdictions?

The requirement that corrugated stainless-steel tubing (CSST) cannot be connected to an exterior gas meter is rooted in safety concerns. Many jurisdictions have established specific regulations to mitigate risks associated with gas leaks and potential fire hazards. By prohibiting connections to exterior gas meters, which are more vulnerable to damage or tampering, the regulations aim to ensure a more secure installation.

CSST itself is designed for flexibility and durability, meaning it can be routed through various structures, but connecting it directly to an exterior meter could expose it to environmental factors that might compromise its integrity. Additionally, such connections can make it harder to control the gas supply and provide maintenance access, which can further complicate safety measures for both installation and future repairs.

Other options might not align with these safety priorities as effectively. For instance, while insulation or painting might help with visibility or protection in certain contexts, they do not directly address the core issue of safely managing gas lines in relation to meter access. Similarly, burying the tubing underground could introduce other concerns regarding accessibility for maintenance or inspection, which is also crucial for safety.