Maintenance Technician Practice Test 2026 - Free Maintenance Technician Practice Questions and Prep Guide

The component that is often used to control the flow of fluid in a plumbing system is a valve. Valves are critical in managing the movement and distribution of fluids through pipes by providing a mechanism to start or stop the flow, as well as to regulate it. By adjusting a valve, a technician can effectively control the pressure and direction of the fluid, ensuring that the system operates efficiently and safely.

While filters, pumps, and pipes are all essential components of a plumbing system, they serve different functions. Filters remove impurities from the fluid, ensuring clean flow but not controlling the flow itself. Pumps are used to move fluids through the system, but they do not have the capability to regulate flow in the same way valves do. Pipes simply serve as conduits for the fluid to travel through, without any control mechanisms. Thus, the valve's specific role in controlling flow makes it the correct answer in this context.