What size corrugated stainless steel tubing should be installed to transport 217,000 cubic feet per hour of natural gas to an appliance 98 feet away?

To determine the appropriate size of corrugated stainless steel tubing (CSST) needed to transport a significant volume of natural gas, such as 217,000 cubic feet per hour over a distance of 98 feet, it's essential to consider the demand for gas flow rate and the pressure losses that occur over that distance.

The correct choice indicates that tubing size 30 (Extra High Density or EHD) is suitable for this application. This is mainly due to the fact that size 30 tubing has a larger internal diameter compared to smaller tubing sizes, which allows for sufficient gas flow without excessive pressure loss. In situations where a significant volume of gas is required, the larger diameter of the tubing helps maintain an adequate pressure to the appliance, ensuring that the appliance operates efficiently and safely.

Furthermore, the specific flow requirements, including gas velocity and the need to prevent excessively high velocities that can lead to noise and potential damage to the piping, are also factors that must be considered. Tubing size 30 is designed to accommodate higher flow rates while keeping pressure losses within acceptable limits over longer distances. When designing gas piping systems, adhering to both the flow demands and local codes and standards is essential, which this size meets.

In contrast, the other tubing sizes would likely