What is the primary purpose of a strainer in piping systems?

The primary purpose of a strainer in piping systems is to capture debris and particulates from liquids to protect pumps and valves. Strainers are designed to filter out unwanted solid materials from fluids before they reach critical components of the system, such as pumps, valves, and other mechanical parts. By removing these contaminants, strainers help prevent damage to equipment, reduce maintenance costs, and ensure the efficient operation of the system.

The other options do not represent the core function of a strainer. Strainers do not enhance flow rate; in fact, they can create some restriction in flow due to the captured debris. They also do not actively reduce pressure drop, although they can minimize significant pressure drops caused by clogging if they are maintained properly. Lastly, strainers do not increase the temperature of fluids, as their primary function revolves around filtration, not thermal management. The filtration process can affect the overall system performance, but the goal is to protect the mechanical integrity of the system.