Can a flex connector be used on a stationary appliance?

Flex connectors are designed for connecting gas appliances to the gas supply while providing a level of flexibility to accommodate movement of the appliance during installation, maintenance, or operation. However, the use of flex connectors is generally not permitted for stationary appliances due to safety concerns. Stationary appliances are intended to remain in place, and rigid piping is expected to be used for these types of installations to minimize the risk of disconnection or fatigue in the gas line, which can lead to leaks.

Using a rigid connection helps to ensure the integrity of the gas line, particularly in applications where the appliance will undergo vibrations or thermal expansions. In contrast, flex connectors may create a potential point of failure if they are not properly secured or if they degrade over time. Therefore, for stationary appliances, the guidelines and standards in gas piping safety strongly recommend the use of rigid piping to ensure the safe and reliable operation of the gas system.