What is the role of a valve in a piping system?

The role of a valve in a piping system is fundamentally to control the flow of fluid within the system. Valves serve as critical components that allow for the regulation, throttling, or complete stoppage of fluid movement through the piping. By adjusting the position of a valve, a pipefitter can manage the volume and pressure of fluids, ensuring that the system operates efficiently and safely.

For instance, in a system where a variable flow rate is necessary, valves can help in achieving such adjustments to meet system demands. This control is crucial for applications that require precise fluid delivery, such as in heating, cooling, or distributing substances in various industrial processes.

While connections between different pipe sizes, pressure measurement, and structural support are important aspects of a piping system, they do not encapsulate the primary function of a valve, which is specifically designed for controlling and regulating fluid flow.