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 Leem/LSS "WEDGE-FLOW™" lateral systems are precision engineered to maximize bed utilization and provide uniform collection and distribution patterns. LEEM offers complete engineering assistance in the design and development of new systems as well as improving and replacing existing installations. HUB LATERALS This design is commonly used in sand filtration, activated carbon columns, and demineralizer vessels up to 8' diameter. "WEDGE-FLOW™" laterals are often designed in a multi-tier pattern as well as angled to conform to the vessel head configuration. HEADER-LATERALS "WEDGE-FLOW™" header-lateral systems are designed as collectors and distributors in larger vessels. These are optimum systems where mid-bed or regenerant processes are employed. Units are custom designed for either side or center vessel configuration and can accommodate threaded , nozzle or pad connections. CUSTOM DESIGNED LATERALS LEEM/LSS "WEDGE-FLOW™" laterals are custom designed as replacements for existing installations. Exact replacement is accommodated as well as re-engineered to improve process fluid dynamics. Often, with LEEM/LSS' "Back to Basics" approach, major improvements can be realized without increasing costs. Retention, drainage patterns, and alloy selection are a few of the criteria that can result in process improvements. Careful consideration to existing internal configurations can result in avoiding unnecessary major capital expense.