STRAINERS The Keckley Company offers a complete line of pipeline strainers. Large Inventory - Competitively Priced A pipe-line strainer is a device which provides a means of mechanically removing solids from a flowing fluid by utilizing a perforated or wire mesh straining element. Strainers are an inexpensive means of protecting downstream mechanical equipment such as condensers, heat exchangers, pumps, compressors, meters, spray nozzles, turines, steam traps, etc. from possible damages due to debris such as rust, pipe scale, sediment, and/or other solids.