A gas range must be equipped with which type of valve?

A gas range must be equipped with a gas shut-off valve to ensure safety and enable the user to stop the flow of gas easily when necessary. This valve is critical in preventing gas leaks and potential fires when the appliance is not in use or requires maintenance. The installation of a gas shut-off valve allows for immediate disconnection from the gas supply, providing a direct means for emergency shut-off.

The other options, while they may serve specific purposes in different contexts, do not fulfill the primary safety and functionality requirement for gas ranges. Automated valves may control gas flow based on the system's needs but are not a standard requirement for residential gas ranges. Flow control valves are more focused on regulating the pressure and flow of gas rather than providing a means to shut off the supply. Safety lock valves are generally used in applications requiring additional security measures, which are not standard for typical home gas range installations. The focus on safety and ease of access for users firmly establishes the necessity for a gas shut-off valve in gas range setups.