Is corrugated stainless steel tubing approved for use in gas piping for appliances?

Corrugated stainless steel tubing (CSST) is indeed approved for use in gas piping for appliances, which makes the selected answer accurate. This type of tubing is recognized for its flexibility, lightweight nature, and resistance to corrosion, making it an advantageous option for plumbing professionals. Many codes and standards, including those set by organizations such as the National Fire Protection Association (NFPA) and International Code Council (ICC), endorse the use of CSST in both residential and commercial applications, provided that it meets necessary installation and safety regulations.

The advantages of using CSST include its ability to navigate around obstacles easily and its reduced installation time compared to rigid piping. It's essential, however, for installers to adhere to local code requirements and ensure proper bonding and grounding when using CSST to prevent any potential issues from gas leaks and electrical surges.

While options that suggest limitations, such as only in certain regions or only for specific appliances, do reflect common regional differences in codes or specific application requirements, they do not comprehensively capture the broad acceptance and applicability of CSST for a wide variety of gas appliances across many areas. Therefore, it is most accurate to affirm that CSST is approved for general use in gas piping for appliances.