How is the size of fuel gas piping determined?

The size of fuel gas piping is determined primarily by the maximum flow required by the equipment connected to the pipe. This ensures that the system can deliver an adequate volume of gas to meet the operational needs of all equipment while maintaining safe and efficient performance. Proper sizing is essential to avoid issues such as pressure drop, which can lead to inadequate gas supply or operational malfunctions.

Factors such as the length of the pipe run, while important in the overall installation considerations, do not independently govern the size of the piping. Instead, they are factored in alongside the flow requirements to ensure the system-efficient performance.

State regulations may provide guidelines and minimum standards for installation, but the actual sizing ultimately depends on the maximum demand of the connected appliances and their operational requirements. Likewise, while the type of fuel used can influence decisions in design and safety considerations, it does not directly determine the size of the piping in terms of capacity and flow needs. Thus, choosing the correct size of fuel gas piping revolves mainly around the maximum flow requirements from the connected equipment.