A strainer is installed into a pipeline and functions as a mechanical filter removing and retaining particles too large to pass through yet allowing the flowing media to pass unobstructed. By cleaning the flowing media, pipeline strainers help to protect expensive downstream equipment such as pumps, meters, spray nozzles, compressors, and turbines.
Straining of the pipeline flow is accomplished via a perforated or mesh lined straining element, internal to the strainer. This is shown in the illustration below.
