How high must the unthreaded portion of a gas outlet be above the patio surface?

• A. 1 inch
• B. 2 inches
• C. 3 inches
• D. 4 inches

Answer: (B)

The requirement for the unthreaded portion of a gas outlet to be a minimum of 2 inches above the patio surface is established to ensure safety and prevent potential hazards. This height helps to minimize the risk of gas accumulation in low-lying areas, where it could pose a danger if there is a gas leak.

By keeping the unthreaded portion elevated, it ensures that any gas that may escape does not linger at ground level, where it could easily ignite if there is a spark or flame present. This height requirement is crucial in maintaining safe gas installations and ensuring that both the environmental factors and local codes are adhered to.

Understanding this standard reinforces the importance of proper gas outlet placement, ensuring that safety is prioritized in residential plumbing and gas system installations.