How must a branch line that is no longer required be terminated in a residential setting?

In a residential setting, when a branch line is no longer required, it must be terminated properly to ensure safety and compliance with regulations. The correct method involves using a coupling, closed nipple, and a plug valve or compatible plug cap. This method ensures that the branch line is securely sealed, preventing any potential gas leaks that could occur if the line were simply capped or cut.

Using a coupling and closed nipple provides a robust connection that effectively seals the end of the pipe. The addition of a plug valve or a compatible plug cap allows for a clearly defined termination point that can be easily identified and accessed for any future maintenance if necessary. This approach not only adheres to safety standards but also facilitates future modifications, should they be required.

Other methods for terminating a branch line may not provide the same level of security or clarity. For instance, simply using a valve might not fully prevent gas leaks if the valve were to fail. Cutting the line flush does not provide a secure termination and can lead to potential leaks. Similarly, employing a blind flange may not meet the requirements in certain jurisdictions or contexts where a more accessible termination method is necessary. Adhering to the correct procedure ensures both safety and compliance with industry standards.