Passive intake screens also knows as Johnson screens/continuous slot screens, rod based well screens. The design is based on the wedge wire profile, longitudinal support rods and air-backwash system. Passive Water Intakes for drinking water plants, desalination plants, power plant cooling systems, irrigation water, potable water and many other applications. And for diameter more than 600mm, reforcing rings are suggested to make the screens strong. We can design the screens for you if you let us know your water flow speed that you need.