Diffuser Basket Diffuser basket installs on the distributor tube directly underneath the control head to diffuse water through the air pocket that is injected into the tank during the backwash cycle, enhancing the oxidation of contaminates in the water. 32mm & 1.05" Diameter Fits the standard 1.05" distributor tube used with most Fleck 5600 & 2510 valves and larger 32mm diameter distributor tube used with most Fleck 7000 control valves. Push On The diffuser cone pushes down the distributor tube 2"-4" and doesn't require any fasteners or adhesives. The diffuser basket installs on the distributor tube directly underneath the control head to diffuse water through the air pocket that is injected into the tank during the backwash cycle, enhancing the oxidation of contaminates in the water. It just pushes onto the distributor tube, fitting both 1.05" and 32mm tubes.