When is a flexible gas connector allowed for an equipment installation?

A flexible gas connector is allowed for an equipment installation primarily when the equipment is movable. This is because flexible gas connectors are designed to accommodate the movement of gas appliances without compromising the integrity of the gas supply. They provide the necessary flexibility to connect appliances that may need to be relocated for servicing, cleaning, or rearranging kitchen layouts, all while ensuring a safe and reliable gas supply.

Permanent installations typically require rigid piping systems that minimize the risk of leaks and provide structural integrity. Insulating a connector is not a standard practice related to when flexible connectors can be used, as insulation does not inherently relate to the suitability of the connector’s application. Additionally, underground gas lines involve different installation codes and practices that generally do not apply to flexible connectors used in equipment installations. Hence, the correct context for using a flexible gas connector is with movable equipment, allowing for convenience and adaptability in a commercial kitchen setting.