Pressure Leaf Filters    New Filter Leaves    Filter Leaf Repair    Wedge Wire Screens    Neva-Clog    Underdrains I    Nafco "C" fibrous filter aid    Screen Nozzles    Lateral Systems    Underdrains II    Strainers    Intake Screens    Custom Fabrication    Engineering Data    Contact Us    About Us "WEDGE-FLOW™" product quality is an absolute necessity in the design and manufacture of flat retention screens. Slot sizes of .005" to .018" are required for resin, sand and carbon columns. In addition massive support structure, capable of withstanding up to 150 psi and higher pressure differentials, is often required. The importance of engineering expertise and attention to detail during production can not be understated. Our A.S.M.E. certified welders are in constant communication with engineering during all phases of design and manufacture. Retaining screens are commonly installed by welding directly to the vessel, and become a vital, integral part of the process. It is this understanding of process requirements that guides LEEM/LSS from the onset of your project.