What condition is required for the operation of the metallic pipe to deliver gas?

The operation of a metallic pipe designed to deliver gas typically requires specific pressure conditions to ensure safe and efficient transport. In this context, an inlet pressure of less than 2 psi is necessary for certain types of gas systems. This lower pressure is crucial because higher pressures can lead to safety hazards such as leaks, excessive wear on fittings, or even catastrophic failure due to the structural limitations of the piping materials.

In gas delivery systems, maintaining lower inlet pressures often aligns with regulatory standards and operational safety requirements, ensuring that gas flows smoothly and minimizes risks associated with high-pressure conditions. It’s common for certain applications to demand lower pressure to accommodate other components in the system that operate under the same conditions.

Other options, while they might relate to different aspects of gas delivery systems, do not represent the critical condition needed for the metallic pipe's operation in this scenario. For example, having an inlet pressure of 5 psi or greater could be detrimental in this context, as might pressures exceeding the structural integrity of the materials used. Likewise, a pressure drop and temperature control measures are more operational considerations and do not specifically dictate the necessary inlet pressure for the metallic pipe's effective delivery of gas.