What type of fluid can pressure piping systems typically convey?

Pressure piping systems are designed to convey expansible fluids, which include both gases and vapors. Expansible fluids are characterized by their ability to change volume significantly with changes in pressure and temperature. This encompasses not only gaseous substances but also the vapors of certain liquids under specific conditions. Therefore, the correct answer reflects the broad range of fluids that pressure piping systems can handle, emphasizing their function in various applications across industries.

While other types of substances like solids and liquids may be transported in specific contexts, pressure piping systems are primarily utilized for fluids that can expand and contract. Hence, the inclusion of both gases and vapors as expansible fluids is key to understanding the functionality and design of these systems.