HEADER LATERAL

Introduction :Johnson all metallic header lateral eliminates the problem of breakage faced in plastic and abonite laterals and nozzles. This saves considerable cost by reducing the down time of process to identify the cracks etc. " Versatile" is the best single-word description of a Johnson screen lateral system. These assemblies, which consist of a series of screen laterals attached to either a central header or hub, allow designers to provide uniform flow through treatment media at a wide range of rates and fora variety of vessel sizes and shapes.A typical vessel would use a header lateral assembly at the top to distribute inflow evenly across the bed surface. A second assembly, located near the vessel bottom, could collect the treated flow and pass it either through the vessel sidewall or - by attaching the laterals to a central hub - out the vessel bottom. For counter-current flow, a similar distribution and collection system can be designed.Several available design options can be chosen to achieve uniform, controlled rate flow and collection. The number and spacing of laterals, for example, can be varied. Slot sizes can be any width from 0.05 mm up in 0.03 mm increments. Diameters of laterals and headers can also vary. To deal with particular process chemistry or conditions, the screen assemblies can be made from nearly any wieldable metal including several grades of stainless steel and exotic alloys.