The “Tee” strainers are suitable for either horizontal or vertical (downward flow) piping. Free straining area is minimum 6 times pipe CS area. Standard elements are 40 mesh stainless steel welded. Stiffeners made of rods form the skeleton of the filter elements. The mesh is spot welded with the stiffeners for maximum strength. Different size perforations and meshes are available in Stainless steel, , and brass to meet specific media requirements. Other materials of construction for filters can be provided on request. This pressure drop chart is based on the flow of clean water through 6 mesh (approx 1/8” hole size) perforations.