What does a pictorial diagram primarily show?

A pictorial diagram is designed to visually represent various components and their spatial arrangement within a system. This type of diagram uses images or drawings to indicate where each component is located, serving as a helpful guide for understanding the layout of a system or equipment.

By showcasing the physical positioning of elements, it allows technicians to easily identify the parts they need to work with or troubleshoot. It does not primarily convey the process flow, functionality, or safety measures, which may be represented in other types of diagrams or documentation, such as flowcharts or schematic diagrams. Understanding the layout is crucial for effective installation, maintenance, and repair tasks in gas-related systems.