What should be the height of the unthreaded portion of a gas outlet above outdoor patios?

The correct height for the unthreaded portion of a gas outlet above outdoor patios is 2 inches. This specification is established by safety standards outlined in the National Fuel Gas Code to reduce the risk of gas escaping into a confined space where it could accumulate and pose a danger.

Having the outlet elevated ensures that any potential gas that might leak from the connection will disperse quickly into the atmosphere rather than lingering at ground level. This height is designed to accommodate typical outdoor environmental conditions and promotes better ventilation. The importance of adhering to this height requirement is crucial for preventing hazardous situations, especially in areas where people congregate, such as patios.

While responses indicating other heights might reflect different code requirements, such as those found in specific applications or jurisdictions, the standard requirement stands firm at 2 inches to ensure the safety and effectiveness of gas installations in outdoor settings.