All Metal Suction Strainer, Sump strainers are used in hydraulic fluids, coolants, lubricants, and many process fluids. Flow Ezy offers them in many different constructions to better match a variety of applications. All have strong perforated metal support tubes under the straining elements. All are available with optional, built-in bypass relief valves to avoid starving the pump should the strainer become dirt-clogged. The traditional all-metal sump strainer has stainless steel pleated elements, in mesh sizes 30 to 200. Continuous epoxy bonded joints will not leak fluid around the element. They may be cleaned and used indefinitely.